Rear shock service/setup, shown with RCS Ti spring. Most of the pre-superconducting magnets were made of iron. com you'll find a wide choice of high-quality RockShox Small Parts. The number of adjustment clicker options compared to the OEM WP 4CS is a major improvement, and sensitivity to clicker adjustments is greatly increased as well. Systems that use one or two shims deliver a harsh feel on high speed hits, unfortunately, many so-called high performance suspension designs use very few shims and/or only small holes to control damping forces. In 2011, before the company even officially existed, Vorsprung founder Steve Mathews had begun work on what went on to become the Tractive Valve Tuning System. For 2020, new shim-stack damping pistons improve road feel under aggressive conditions. With that app you can hack around on the shim stack and see the results of each change in terms of how many clicks stiffer or softer each shim change will make your suspension. However, since the whole shim moves rather than just the upper edge, it's hard to say how it affects the damping curve. Otherwise there would be more shims in the stack, and they would be different sizes according to their function. I didnt have a lot of shims to play with so I ran a straight 5 stack of. Shim Stack Controlled Damping Controlling the damping circuit with shim stack gives unmatched dynamic control and endless room for custom tuning. The trick to Push’s new RockShox Charger 2 & 2. These two items are the only ones that matter for our purposes. The next shim stack is called the "high speed compression stack". steel washers (shims) to open up an orifice and allow fluid to flow through it. The rebound valve shim stack, in most cases, will have a smaller outside diameter (OD) than compression valve shims do and the valve shims will usually have a thicker cross section when compared to the compression valve shims. Lap times can be dramatically slower and overall safety for both street and race enthusiasts is another issue. The following method is a common way to increase or decrease the overall damping of the shock. If you have not already done so, now is a good time to read:. 015" Thick 2. If you're in between sizes and are planning on really riding rough, you may want the smaller size rather than the larger (easier to bail when things go wrong). 2 This stack is very good on most frames and is a great place to start if you have a older stack you are not happy with. By continuing to browse our website, you give consent for cookies to be used. There are 4 million ways of going about this process, different valves, shim stacks etc. 10mm which should give plenty of room for tuning. On conventional forks they sometimes include a cartridge that mimics a shim stack shock absorber. Includes custom rebound and/or compression tuning, parts and new fluid and lube. Front Fork Products and Upgrades Essential Solutions For Better Bump Absorption and Handling. Dirt Rider. As is covered in our Shock Valving Guide, every shock features two shim stacks: one for the compression tuning and one for rebound tuning. However, since the whole shim moves rather than just the upper edge, it's hard to say how it affects the damping curve. compression valving, where all the shims in the stack are. 45 you added with the 20x. *Price includes valving. Basically the shim stack is a spring built from discs and it deflects with oil flow through the ports. We can achieve firmer compression setting whilst retaining a plush feel changing to this design. One thing to add to the excellent thread: there are 11 shims the very last one on the bottom has a bigger inside diameter. The 27"5+ Sphere is designed to be an all-day, all-terrain hardtail. Adjustable Rebound Shim Stack. 20 / 20mm x 0. of each other separated by a small spacer), etc. In actuality, the high speed stack is the entire stack, but the cross over shim causes a separation that allows customiztion of performance in the slower speeds of suspension travel. The Charger Damper is a fully sealed cartridge that uses shim stacks and staged circuits so compression control is managed through the damping circuits instead of the spring curve. At SRAM we are passionate about cycling. shim is a 10mm shim, the KTM's parts manual for the SMT all years lists 2003. Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. The difference is the Crossover. 5″ Shim Kits Advanced Tuning: Flutter Shim Stack A flutter stack is a configuration were a smaller diameter shim (gap shim) is placed between two larger diameter shims, usually on the compression side and within one or two shims from the piston face. Standard shims, also called valve discs, are stacked pyramid style over the top and bottom of the piston, getting progressively smaller the further they are from it. what the instructions tell you to do. Probably not much help but if you can find the shims to match the general idea of the above stack then you. Shim stack for stock kx450? I revavled my shock on my 2013 kx450f and made a nice difference. I have a 2016 KTM 300EXC (that would be a 300XC-W in the US I believe) with WP CC forks off of a late model SX-F (so they are definitely Closed Chamber cartridges with the air bladder in them). My guess is that it allows a lot of fluid to move at high speed. 75 inch spring preload. Boker’s maintains over 32,000 stock tools for flat washers, spacers, and shims. From left to right: new cup washer, 8 x 0. Shim stacks can be fine tuned in terms of clicker settings allowing you to relentlessly pursue refinement of the suspension setup. So it has the 20mm flutter to soften the deflection of the 36. With the two and three stage stacks you have more control over the oil flow. Plus I've never owned a fork or rear shock where I had the option of tuning it with shim stacks. Shims are stacked on top of each other, generally from small to large, as they move toward the piston. In actuality, the high speed stack is the entire stack, but the cross over shim causes a separation that allows customiztion of performance in the slower speeds of suspension travel. Shim stack retuned to match SAE 10wt oil at low speed and whoop damping at high speed. 5" Replacement Valve Stack King Replacement Valve stack For 2. The pop-pet valve is pushed against its seat by a. uses cookies to improve your browsing experience on our website. 3 shims is about 4% softer then the baseline stack. Yes, that first 12mm shim is a bleed shim; it basically holds the stack open so that some oil can get around the shims without having to deflect them first. There are many different forks to choose from and not all of them will fit your bike. There are so many shim combinations available that tuning and performance characteristics are nearly limitless. 2 paired with a 11mm clamp shim, or the most current stack of 8x15x. Tune crossover gaps, shim. So a 10mm shim will reduce high speed and low speed compared to a 11mm. In conclusion, the 2017 KTM 300 XC-W hit a home run with the new motor, but took some irritating shortcuts with the XPlor suspension. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 2018 Suzuki RM-Z450. A bicycle with a rising rate leverage curve produces a bike that is progressively harder to push through the shock stroke, making it hard to bottom out. With that app you can hack around on the shim stack and see the results of each change in terms of how many clicks stiffer or softer each shim change will make your suspension. compression valving, where all the shims in the stack are. 5, 20, 24, 22, 19, 16. Anyway, from my previous setting on the Marzocchi 48, I would continue by removing the bleed shim from the rebound stack and making the Mid float exactly the same as stock (as you have it now). The rider is interviewed then a shim stack is custom built for rider's weight, ability and application. 05 because of the 30x. The dual or sometimes step tripling, instead of just one shim is used often in premium stacks. Standard Shim Stacks. Systems that use one or two shims deliver a harsh feel on high speed hits, unfortunately, many so-called high performance suspension designs use very few shims and/or only small holes to control damping forces. The trick to Push’s new RockShox Charger 2 & 2. This model is then used as a tool for suspension design, synthesis, and tuning. the bike is fully built. Order the RockShox Piston Shim Stack for Low Vivid/Vivid Air R2C online quickly and at low cost. 200" Outside Diameter 0. This is due to rebound damping having to resist the force of the spring, and because piston speeds are much slower. The WP suspension takes a lot of particular knowledge to get set up best. Can I personalise the shim stack in Charger 2. Front Fork Products and Upgrades Essential Solutions For Better Bump Absorption and Handling. 5mm and about 10mph on 2mm. If free play is excessive add additional shims as necessary. Some of my mates use stacks of 3 or 4 and they think they're good. 8" and in thickness from. Install shims as indicated in the table below and then reinstall OEM shim. Low Speed Compression control with high speed compression shim stack. 15 Remove one 20x. Fox will usually stamp what valving they put inside the shock. 10 from the midvalve. more usable positions rather than coarse tuning for air pressure. a stack of thin ones is when a very high response is needed, like if bottoming becomes a problem, or there is just no more room on the bolt to have a stack of shims that tall. I can get the 120mm Manitou Minute Pro for about $400 - I'm big on tuning to get a fork perfectly suited for my riding, so I love the fact that the compression damping can be altered by changing the shim stack in the ABS+ damper. Adding shims to the low speed stack increases the damping force everywhere, not just at low speed. 10 with atf for oil. 4 Verification of the model in test bench 22 3. Revalving shims for Showa, KYB, WP, Marzocchi and most shocks and forks Revalving shims for Showa, KYB, WP, Fox, Marzocchi, RydeFx, Walker Evans, and most shocks and forks Current available sizes shown below. The PUSH tune basically does its best to overcome the issues that the stock shock has and, although not able to elimenate them completely, does a good job of improving what is a compromised design. With a highly tuneable, shim-based damper, and an easy-to operate lockout lever, this rear shock boasts being incredibly simple and effective. I had read some information on the various bike forums about messing with the shim stacks in both the forks and shock to "plushen up" the ride. This "shim stack" is commonly referred to as the "valving" and is the main focus of our suspension revalve. I was just reviewing some Jamis bikes at a LBS and noticing how Jamis pays attention to the smallest details and loads these bikes with high quality components. steel washers (shims) to open up an orifice and allow fluid to flow through it. The sample-to-sample changes in the high-order gradients are negligible, and they drift only very slowly with time. In a 2014-17 RCT3 Pike/Lyrik damper you have three choices for HSC. Use a metric caliper to verify the shim outer diameter and shim thickness or print the page at 100% scale to arrange the shim stack using the outlines on the page. 500 ID in imperial (Penske). DVO Diamond Shim Stack Tune For Less High Speed Compression Damping tuning guru. This is achieved by utilizing a somewhat stiffer low speed compression stack, in conjunction with a somewhat softer high speed compression stack, This gives good feedback, and allows the suspension to ride higher in it's stroke, given the motorcycle's average speed. , Im working on suspension for more than 20 years. Wie sieht Shimstack-Tuning aus und was gibt es vorher zu bedenken? Ein gutes Tuning ist wie eine gute Frisur: es muss zu Dir passen. McU Sports is the leader in custom tuning for the recreational skier looking for the perfect ride from their gear to the racers that demand they get down the hill faster than everyone else. It is the quantity, thickness, diameter and pattern that are defining parameters of shim stack design. 1mm washer height. The primary unit includes a damper tube, a spring chamber, and a piston rod that supports a main piston. Shim stack: Shims are thin metal washers used to restrict oil flow in a damper. The base valve has a thick stack of. For bikes with older style forks, cartridge emulators or fork valves have been introduced. Next, the individual component models are integrated into a full suspension model. This unique base valve refill check system does away with the standard check spring. In ihr steckt der Shim-Stack, welche die Charakteristik der Druckstufe maßgeblich beeinflusst. The 27"5+ Sphere is designed to be an all-day, all-terrain hardtail. The high quality and fully adjustable WP XPLOR PRO 6746 shock absorber for the KTM 790 ADVENTURE R RALLY has been developed based on KTM’s. Shim Stack Controlled Damping Controlling the damping circuit with shim stack gives unmatched dynamic control and endless room for custom tuning. Spring Rate Selection. Re: GP Suspension Shim Stack Install « Reply #6 on: July 15, 2017, 07:51:38 PM » We are doing the ohlins cartdrige kit and ohlins rear shock on our project track bike but you can go with Mantis they make a cartdrige kit for the Z900 and a rear shock for it aswell. This would explain the harsh feeling I was getting; long before the end of the stroke they'd lock up. When a motorcycle is manufactured, lets say its for general road use, it is usually fitted with a basic suspension package front and rear. Beyond the basic calculation of the shim factor of an individual shim there is software available to assist in tuning suspension. 15mm 10mm clamping shim As you can see, this is a Very short and simple stack. com Follow Manitou. Systems that use one or two shims deliver a harsh feel on high speed hits, unfortunately, many so-called high performance suspension designs use very few shims and/or only small holes to control damping forces. 006 thick and you replace them with a “B” compression valving, which consists of all. When a series of shims are assembled together, they are considered a "shim stack". Otherwise there would be more shims in the stack, and they would be different sizes according to their function. Rebound adjustment (if applicable) is located at the bottom of the shock. To The Point is a series of articles that explains the ins and outs of your bike every Tuesday. The Fox Factory Tuning programme allows you to upgrade the compression damping assembly and his degree experimenting with different bike. If you have only dropped x1 stack then its a little easier. In actuality, the high speed stack is the entire stack, but the cross over shim causes a separation that allows customiztion of performance in the slower speeds of suspension travel. Low/high speed compression adjustments are nothing special for forks these days, but very few have easily accessed shim stacks for home tuning. 015 shim pack on the compression. 59 each Retail Thick OD. Shims sell for $1 ea or slightly less in a stack. 200" thick backup washers (thick washers located just below the nut) are NOT included in this kit because you should already have them in the shock if you're revalving it. Starting off with a blog for my 2013 KTM 690 Enduro R. I decided to change the fluid and see if that would help. you dont need special tools to do a full service, because not everything has to be opened. Brake caliper restoration/service. Remember that the whole stack thickness cannot come down the stock value too much. The shim stack assembly of the E16 damper laid out. 5 oil on a 04 r1. I almost 100% use a vacuum pump I build. 10 with atf for oil. The fluid displaced by the piston shafts are directed either into or out of the cylinder tubes through the holes. There are 4 million ways of going about this process, different valves, shim stacks etc. DUC 32 & SC 32 Tuning. Cogent Dynamics is proud to provide top-tier custom motorcycle suspension service, repair, overhaul and rebuild help for your bike. Tuning forks Usually valve-type damp- ing is set up to produce a linear relationship be- tween damping and shock speed, but differ- ent shim stacks and pistons give a wide range of options to an owner, tuner or manufac-. In conclusion, the 2017 KTM 300 XC-W hit a home run with the new motor, but took some irritating shortcuts with the XPlor suspension. The next shim stack to follow is the "mid speed compression stack". Suspension Tuning Guide Street Bike or Road Racing Applications by Herb Varin With incorrect suspension setup, tire wear is increased and handling suffers, resulting in rider fatigue. I also recently bought a MTB, now this has two 175mm cranks but I moved the left cleat back and the right shimmed cleat forward aswell as turning my seat slightly so the right seat bone sits me slightly angled and supports that side. Suspension travel: 150 mm Powerful and efficient. Find many great new & used options and get the best deals for YZ125 YAMAHA 1986 YZ 125 86 REAR SHOCK SHIM STACK AND PARTS at the best online prices at eBay! Free shipping for many products!. To combat the hydraulic locking sensation experience on orifice damper forks, DVO has custom-designed how the oil will flow through the piston and shims. Shock Shim Stack Basics. 5 shim and a camplate mod to keep close to stock speed. Shock valving shims are precision machined in various thicknesses and are heat treated to hold up to temperatures exceeding 500 degrees without losing strength. This is a variety of shims assembled starting with a large diameter shim, progressively getting smaller in diameter and or thickness as the shims are positioned together. Notes: Use this as a guide only, there are many other variations to further customize tuning Ultra light shim stack should only be used with light weight and less aggressive riders to prevent shim damage * Will not effect ride performance; for lubrication only ** The additional 15mm shim will increase compression damping. The Rogue is the ultimate enduro weapon, blending light weight with strength and performance for the toughest courses any where in the world. 1 Modelling of the chambers 15 3. If you'd like to go from a medium to a firm rebound tune, you can remove the jam-nut from the piston, pull the first 3 shims, flip them and reinstall. Take it easy on your first few rides. Is it OK to run flutter stacks in both shocks? Right now the front of my car has a flutter stack in the C/O but not in the by-pass. Superior Shock Absorber Tuners Shim stack Suitable For shim size of 10mm. For the forks you would need a Race Tech Gold Fork Valve Kit. If you have an air cooled bike or one that doesn't use shims for valve adjustment, check out our other post on adjusting non shim dirt bike valves. We resurface pistons and install a new custom valving stack tailored to your speed, type of riding, and weight. be cautious wiht 6mm of rear shock raise. 68 mm Measured Clearance. I then had a thought pop into my head, from years before, that was from bike suspension. The piston is shown compression side up (so the compression shims sit on that side). If you have a completely unmodified shock, it will not have a nitrogen valve. In ihr steckt der Shim-Stack, welche die Charakteristik der Druckstufe maßgeblich beeinflusst. Sparked had a really good thread about some DIY shim stack tuning on the shocks for the smaller bikes, so I wanted to start a similar thread for some discussion with the 610/630 guys. 200" thick backup washers (thick washers located just below the nut) are NOT included in this kit because you should already have them in the shock if you're revalving it. 33% race sag. Preload from the ring shim holds the stack closed at low speed forcing all of the shock fluid flow through the clicker circuits. Cane Creek Double Barrel Instructions Congratulations on your purchase of the Cane Creek Double Barrel (CCDB) rear shock. It allows a plush feel with incredible small-bump compliance that doesn't dive or pack up as the fork's travel deepens. The base valve has a thick stack of. Your suggestion 3sounds good to me. You can choose from a wide variety of sizes, thicknesses and materials, including non-metallic. Tuning a damper requires taking the damper apart, making the changes to the shim stack assembly, and putting the damper back together. i may do a three shim stack for the freeride bike of 19mm x 0. Suspension Tuning Guide Street Bike or Road Racing Applications by Herb Varin With incorrect suspension setup, tire wear is increased and handling suffers, resulting in rider fatigue. as you get further away from the piston), split (two different shim stacks directly on top. uses cookies to improve your browsing experience on our website. Tension Link suspension bike. 1 bleed shim means that there is a lot of uncontrolled/undamped movement in the compression stroke before the oil is forced past the 32 x 0. heya, don't know what happened with that link as far as i know it was just decathlon and the product page it is a manitou r7 pro and i have only had it a short while, yesterday i went out a ride and took the shock pump along and i just could not get it feeling right, i tried a range of pressures and up to a quarter sag and and tried going through the rebound setting. On conventional forks they sometimes include a cartridge that mimics a shim stack shock absorber. This results in 16 clicks of adjustment with enhanced linear steps between settings. Low speed rebound can now be fine tuned by the red rebound knob, i. The primary unit includes a damper tube, a spring chamber, and a piston rod that supports a main piston. There are many different forks to choose from and not all of them will fit your bike. Some valving may require dual stacks or more to achieve the desired tune. If it is any good anyway - if not, you often end up bypassing it with an old school hole. A water sample can change the field by parts per million. Tune via both the mid-valve spring rate and the mid valve shim stack. Low/high speed compression adjustments are nothing special for forks these days, but very few have easily accessed shim stacks for home tuning. no, I did not go the try way. If you are still unable to achieve desired ride feel, send your suspension out to a suspension tuning company for custom tuning of shim stacks, valving, or air sleeves. A shim stack consists of small discs of varying diameters and thicknesses that sit both above and below the piston. Krooztune KTM WP AER 48 Testing and development After the last few years with the 4CS system we were hoping for a good improvement with the bike in stock trim. Most properly set-up shocks have at least 5 of these shim stacks. Right now I am running the by-pass screw on the mid stroke compression tube about 2/3 way in, and the screw on the last compression tube all the way in. Servicing Dyno Tuning Damping Calculator Spring Calculator Warranties Dealer Login. Superior Shock Absorber Tuners Shim stack Suitable For shim size of 10mm. Low speed rebound can now be fine tuned by the red rebound knob, i. Standard Shim Stacks. Ride is harsh, suspension control is limited and traction is lost. RockShox Vivid R2C Piston Shim Stack Rear Shock Tune Kits UPC: 710845653483 United States Shipping: Everything in the entire store ships for free to the USA, it's that simple, no catch. If your clickers are ineffective or have a very small range, this is due to improper piston & shim stack design. There are so many shim combinations available that tuning and performance characteristics are nearly limitless. 1 The test bench model in Dymola 22 3. Marzocchi 320 LR Mountain MTB Bicycle Bike Fork. A Leg Length Shim 'stack' can be attained by using a LL Shim(s) [and/or alternating stacked Cleat Wedges]. Fork rebuilds/tuning. The product names, descriptions, and photographs within this expanded catalog have not been reviewed and may contain industry short-hand and technical jargon. I was thinking about removing the top (largest dia. Once you have clicked though the DVS link you will provide some basic information about you, your bike, riding style, and other preferences. I can get the 120mm Manitou Minute Pro for about $400 - I'm big on tuning to get a fork perfectly suited for my riding, so I love the fact that the compression damping can be altered by changing the shim stack in the ABS+ damper. Bike Forum; Chat Forum; Classifieds; Forum Help; This topic has 6 replies, 5 voices, Is 'Push'just a brand name or is it different to other people's custom tuning? Any experiences with. Q&A for Work. There are numerous other factors that have some impact over how the suspension will work. 1 The test bench model in Dymola 22 3. Fox Performance Elite. A front that dives some makes it easier to sharpen steering response via trail braking at street speeds. I have also did the Bren Tune for my 2014 BMW S1000r for which it just made this bike really nice. In 2015, Norton CEO Stuart Garner was approached by Jamie Ireson of Brighton, England-based customs outfit 72 Motorcycles with the idea for a limited run of bikes paying homage to Ron Wood’s 1970s Norton flat track racers. This shim stack is primarily what is changed in a suspension "Revalve". We ride our bikes in the peloton, on the trails and down the mountains. Well, the REAL problem is my bike has an integrated seat tube. 875 Shaft Shocks from Pacific Customs Unlimited your best source for Street, Off Road, Sandrail, Dune Buggy, Manx, Rock Crawler, Volksrod, or Mud Buggy VW Parts. If you dig around there are a few dyno runs scattered through the TT suspension forum. This "shim stack" is commonly referred to as the "valving" and is the main focus of our suspension revalve. Rebound adjustment (if applicable) is located at the bottom of the shock. The book is available through Race Tech or online at sites like Amazon. So I should be able to get the same performance out of the RC if I fix the shimz right?. 875 Shaft Shocks from Pacific Customs Unlimited your best source for Street, Off Road, Sandrail, Dune Buggy, Manx, Rock Crawler, Volksrod, or Mud Buggy VW Parts. General Rules Of Thumb For Damper Shim Valve Tuning. A performance shock upgrade, install, and tuning for a 2wd Chevy Silverado 1500 with Fox 2. It's really quite fascinating stuff, but honestly, you'd almost need a physics degree to really understand it. Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. The small diameter shim at the end of a shim stack is usually reffered to as the "transition shim", if there is another stack postitioned behind it. Shock Shim Stacks and Valving. Walker Evans Shim Stack and Damping Curves - 2013 PRO Hey guys, I thought i'd post up the stock valving and damping curves for the WE front shocks on the 2013 Pro RMK. The High-End DH coil shock by DVO Suspension offers lot of tuning capacities and thoughtful design. 015" Thick 2. When I played with the shims I lost about 2mph per 0. Fox will usually stamp what valving they put inside the shock. If your clickers are ineffective or have a very small range, this is due to improper piston & shim stack design. Position 2 brings an additional coil spring in to add stiffness to the shim stack but also closes the LSC ports to provide a soft lockout. The stacking of solid shims can also be detrimental to a smooth-running process as any dust, oil, or dirt that finds its way into the stack can result in a lack of precision and other difficulties down the road. The DPX2 uses a hybrid approach with a poppet design in the head of the shock but shim stacks on the main piston, which are the main modifiers of compression and rebound characteristics in the shock. So this "loader"-unit easily can be removed for tuning the shim-stack, but without completely disassemble the whole shock. Wheel Adjustment. This "shim stack" is commonly referred to as the "valving" and is the main focus of our suspension revalve. 10's you've removed. The Crossover is a smaller diameter shim between the Lo-Speed and the Hi-Speed Stacks. In 2011, before the company even officially existed, Vorsprung founder Steve Mathews had begun work on what went on to become the Tractive Valve Tuning System. I know suspension in a very important key in how the bike will perform, but I couldn't bring myself to drop $500+ to have someone else do it for me. Dirt Rider. Re: Suspension/Shim Stack Question Check out the suspension forum on KTMtalk. Good that the bike got only some scratches on the right plus a new grip waiting for the next ride. Shim stacks are different from compression to rebound in number and size. The holes I drilled were 55mm and 230mm up from the very bottom of the cartridge, as below. For bikes with older style forks, cartridge emulators or fork valves have been introduced. And it skims the ground on burly, double-wall, 32mm-wide rims with Specialized's own Renegade Slopestyle tires. Worse still, is there a puddle of oil under your bike? We will disassemble, inspect, clean and rebuild your entire shock, from the seals all the way down into the damper assembly and IFP. To control damping force the bleed valves can be changed in size by the external adjusters, compression and rebound. This shock has received accolades from many riders, and we were anxious to see how an air shock sans climb switch handled our everyday riding. com Follow Manitou. Rear shock service/setup, shown with RCS Ti spring. Probably not much help but if you can find the shims to match the general idea of the above stack then you. There is a shim stack that controls the flow of oil through the small holes. Keep in mind there could be as much as 200 PSI of pressure in there. Page 31 Use the chart below to layout the shim stack for your desired tune Shim thickness on your rebound damper piston. Drive like a pro with AccuTune. The shim stack, which often is a combination of 20 or more shims, determines the shock's damping qualities. Tighten until snug. Advanced Tuning: Flutter Shim Stack A flutter stack is a configuration were a smaller diameter shim (gap shim) is placed between two larger diameter shims, usually on the compression side and within one or two shims from the piston face. If you need to shim the off axis shims really well, you should spin the sample. The answer is to replace the piston with one that has bigger ports allowing the oil flow to be controlled by the shim stack, this combined with extensive midvalve mods the midvalve is located on the end of the forks internal damper rod and plays a major role as it controls the initial part of the forks stroke, as well as the speed and the. Assembly completed with new oil, nitrogen and any OEM parts needed. Valving is set up for the average rider from the factory but is completely adjustable, and shim stacks can be changed by a suspension professional to fit any rider’s needs. The holes I drilled were 55mm and 230mm up from the very bottom of the cartridge, as below. I can get the 120mm Manitou Minute Pro for about $400 - I'm big on tuning to get a fork perfectly suited for my riding, so I love the fact that the compression damping can be altered by changing the shim stack in the ABS+ damper. 00 – exclusions apply - Fast Shipping and 1-2 day delivery. So I'll work out another example: Exhaust valve measuring. These are small valves which sit between spring and damper rod and offer much improved damping control via dynamic control of fluid flow rates using shim stack technology or similar. Suspension Tuning Guide. This valve kit increase flow area, putting valving control on the shim stack. The first works on the mid speed compression and is managed by the flex of the shims, the second, for the high speed, moves the complete stack away allowing the oil to flow with minimum resistance. Fox Performance Elite. If a suspension consisted of only springs, the resulting action would be like that of a pogo stick. 4 Port compression pistons for finer tuning ability and less ‘blow out’ on big hits. no, I did not go the try way. It's worth noting that the high-speed damping is also tunable via the shim stack, which requires removing and disassembling the damper. com: Shim ReStackor, Finally software to tune a shim stack Setup and tune your suspension far beyond the limits previously possible. 1 Million parts in stock - Fast Free Shipping on orders over $99. You can do this with the 30x. *Price includes valving. The guide below is good for Fox, King, and Sway-A-Way coilover, bypass, and smoothie shocks with some tips thrown in for air bumps. More shims, thicker shims, smaller diameter shims create more resistance, while less shims, thinner shims, larger diameter shims create less resistance. On these instruction sheets at the top right hand side you will find your access code for the DVS. The default setting of the stack is for one washer above the joint, and five below, but for fine tuning of the toe curve refer. Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. Valve Shim calculation of a damper. By reworking the shim stack, we can “revalve” the suspension, changing its handling character and customizing it for each client. The first works on the mid speed compression and is managed by the flex of the shims, the second, for the high speed, moves the complete stack away allowing the oil to flow with minimum resistance. Cutting the steerer tube to its minimum length prevents switching to a taller stem or to a headset cups with a higher stack height. Fox 2" Shock #35 Rebound Shim Stack Set For 5/8" Or 7/8" Shaft Shocks Or 1-1/4" Shaft Air Shocks The 0. Whilst shim stack tuning can increase the compression damping to help prevent it blowing through the travel, it isn't perfect. i've decided to re-shim my lyriks on my freeride bike and am bike. The curve for your shock looks inverted as rebound is normally much higher than compression. A Leg Length Shim 'stack' can be attained by using a LL Shim(s) [and/or alternating stacked Cleat Wedges]. The capability of ReStackor to accurately evaluate complex stack structures gives you the capability to tune the clamp shim diameter, stack taper and crossover shim to develop sophisticated damping profiles. Mid and high speed rebound is controlled by a custom valved shim stack to match the riders weight (air can pressure) and the leverage of the frame. 6 kg/mm spring : Reed Valve Boyesen RAD-34A Reed Valve : Front Spring Replacement Installing springs for a. 1 Modelling of the chambers 15 3.