In many cases its possible to get an accurate stroke measurement by simply measuring from the lip of the wiper seal to the end of the air shaft. Add 5 for a heavy rider 200lbs Subtract 5 for a light rider 150lbs- Add 2 for a recreational or beginner rider more rearward bias Subtract 2 for a pro-level or highly experienced rider less rearward bias.
How To Find The Right Coil Spring For Your Mtb Coil Shock
Spring Length.
. Remove the spring and measure from where the shaft goes into the shock body to where the eye starts on the shaft. If the spring is not marked as to its real stroke never use more than 20 turns on the preload adjuster to avoid coil binding. The new SLS springs from FOX are lighter than titanium springs at more affordable prices.
Please find your spring rate using the tables below. BUT its also tricky finding the right coil spring for your weig. W Your riding weight in pounds.
With its custom fit the Sunlite saddle offers its riders reduced pressure and fatigue even in long travels. A 200-300lb progressive spring may rate 200 lbs at 1 of travel 450 lbs at 2 of travel and 750 lbs at 3 of travel. The beginning rate was 200 lbs and the ending rate was 300 lbs.
Motorcycle model and year. An air spring can be set to the exact PSI to provide your desired sag ride feel and bottom-out resistance. Rider Weight - 1kg 22lbs 1Stone 14lbs.
DNM Preload MTB Mountain Bike Rear Suspension Shock Absorber AL 6061 Coil Spring 750 Lbs 150mm 59 x 30mm 160mm 623 x 35mm 165mm 65 x 35mm with Extra Bushing. Please include the following information. Although you may be well within limits for avoiding coil binding using excessive preload will overly.
Drag race cars will normally use a lighter rate spring about 30 to promote weight transfer while a street car will use a firmer rate spring about 25. An air spring is also more progressive than a coil spring. Shown are the most common models if you do not see yours please email Sonic Springs and we will provide a detailed analysis of your application free of charge.
Springs should typically be compressed 25-30 of the free length when supporting the weight of the vehicle. These SLS springs are a lighter weight steel spring option offered in addition to our standard steel springs. Rockshox even make this super easy and engrave the eye to eye and stroke length on some of.
Call 44 0 1373 826800. The Sunlite Cloud-9 saddle approximately weighs 38 pounds. With 14 inch preload 100 lbs 25 of one inch and 25 of the 400 original spring rate the first inch of compression below the preloaded top-out requires 500 lbs weight the second inch deeper travel is also preloaded by 25 100 lbs of the spring rate so requires 900 lb to bottom the 2 inch travel range 800 original 25400 900.
Skip to main content MAY 2022 WORKSHOP AND WEBSHOP OPEN AND OPERATING AS NORMAL. But theyre your starting points. Wheel Travel - 1inch 254mm.
The standard formula is based on a 6040 Rear to Front weight distribution. Ended up with 700. Coil springs are generally available in increments of 25-50lbsin and there is a chance that your ideal spring weight is between two available springs.
For those who care about sag when balanced over the BB youll have about 25 rear and 17 front. SPRING FREE LENGTH is the length of spring before installation. For example if your shock stroke is 2 your max spring free length is 130mm and your spring rate is 450lbs you need a spring that is 225 x 450Lbs x 125mm if you dont see a spring that has the exact stroke of your shock you can use a spring with a longer stroke as long as the free length will fit.
How To Calculate Spring Rates L Free Length of The Unloaded Spring m G Shear Modulus of Rigidity of Material. Springs for coil shocks are rated using two numbers you will see these stamped on the spring eg 450 X 225. Spring rate in lbin WBL2 TS where.
Then install the spring on your shock with the preload adjuster use tight enough so the spring doesnt move around and. Add 5 for a heavy rider 200lbs Subtract 5 for a light rider 150lbs- Add 2 for a recreational or beginner rider more rearward bias. If the spring is marked as in 600 x 163 or 600 x 41 mm calculate the available preload by spring stroke minus shock stroke.
I need another 50 to 75 pounds before. Sunlite refers to this two-pound saddle as sofa-sized because it is its largest bike seat at 115 inches width by 125 inches length. If you ride like a complete nutter you can bump those rates up.
A shock that measures 210 x 55 means that the shock is 210. Spring Calculator - TF Tuned are experts in mountain bike and bicycle suspension service and repair including setting-up the for you and your bike. SLS Super Light Steel springs are now available from FOX for DHX and VAN rear shocks.
The standard formula is based on a 6040 Rear to Front weight distribution. What size spring do I need for my rear shock. This is to give you a guideline of what spring rate you need there are other variables that may require you to need a softer or firmer spring rate.
Switching from an air shock to a coil shock on your mountain bike for the first time is fun. Start by moving the bottom out bumper all of the ways to the top of the stanchion. This must be the correct dimension for the shock or fork that it is to be installed on.
Now lets break this down. Calculators told me 550 to 575 for my Stumpjumper. Setting Up A Coil Spring On Your Mountain Bikes Rear Shock.
45 out of 5 stars 196 ratings 18 answered questions. B The weight bias or the percentage of your weight on the rear. Make sure to add the weight of your riding kit.
The first number is the weight in pounds needed to compress the spring by an inch aka spring rate see below and the second is the travel length of the spring in inches. Still very soft around 33 sag. Mountain bike rear shocks come in an array of different sizes and recently made the switch from the older traditional sizing measured in inches 85 x 25 to the newer modern sizing that is measured in millimeters 210mm x 55mm AKA metric.
Shock stroke - 1inch 254mm. Rear shock is 400lbin. D Wire Diameter m D Mean Diameter m N Number of active coils an active coil sweeps one full circle.
Owner of wwwshockcraftconz Mech Engineer Tuner Manitou Motorex Vorsprung EPTC SKF Enduro. How do you calculate spring rate on a mountain bike. Visit the DNM Store.
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