Also, beyond what head/seat tube degree is thought to be too slack? (The term slack, seems, ironic or misplaced as the frame would look steeper as the head/seat tube would be less vertical. So does anybody have a simpler EXCEL SPREADSHEET CALCULATION/FORMULA to work out the new geometry after fitting a longer fork? (NOTE: To include new BB HEIGHT, HEAD/SEAT TUBE ANGLES!) But I imagine to frame designers the amount of detail is of use because obviously a frame is more then just lengths, it's curved tube sets, chain/seat stays, and a fork that clamp around wheels. (C) TOO MUCH INFORMATION, AND DATA TO INTERPERATE. With it, looks out of proportion of the example I did. (B) BIKECAD: PRETTY, WITH LOTS OF OPTIONS, BUT THE FORK OPTION EVEN IN CUSTOM MODE FOR A LONGER SUSPENSION FORK, does NOT auto calc the new HEAD/SEAT TUBE ANGLES, and neither does it auto calc what the new b/b height will be either. However this does NOT auto calc that a longer fork will raise the bottom bracket higher from the ground, hence without this "correct b/b height length", then the quoted angles will be incorrect. (A) GeoCalc: SIMPLE and RELEVANT, compare current setup (L/H) with new LONGER SUSPENSION FORK setup on (R/H). TIRE DIAMETER ESTIMATOR A simple calculator to estimate your tire’s rolling diameter based on wheel diameter and tire width.
#Motorcycle suspension geometry calculator full#
The above don't entirely meet my basic purpose, hence comments below: A bike geometry calculator to compare static and sagged hardtail geometry or to compare a sagged hardtail to a static full suspension for a better comparison between the two styles of bike. (C) ~ Martin Manning's Bicycle Geometry 101: Suspension Calculator Calculator Trek mountain bikes are incredibly sophisticated and require a small amount of set up for the individual rider. SEAT TUBE ANGLE =67 (Difference 6 degrees)īTM B/B HEIGHT = 34.5cm (Difference 4.5cm)īut I want an EXCEL spreadsheet to do the above for me, so I have searched the internet, and found three partially suitable programs/websites: HEAD TUBE ANGLE = 65 (Difference 6 degrees) ~ AN OBJECT TO CHOCK UP THE FRONT WHEEL TO THE CORRECT HEIGHT! (IN THIS CASE 4 OLD VIDEO CASSETTES = 10.5CM!) ~ PROTRACTOR, WITH VISIBLE DEGREE INCREMENTS! I have improvised to measure what the actual head tube/seat tube angles would be approximately, with the following tools: ~ NEW SUSPENSION FORK: ROCK SHOX TOTEM: Length = 565mm = 56.5cm ~ CURRENT SUSPENSION FORK: ROCH SHOX JUDY: Length = 460mm = 46cm These days fitting longer travel forks and stiffer triple clamps is a fairly common upgrade, but obviously normally we are well happy with the greater amount of travel, but will this mess up the geometry too much? A worthwhile thought (I DON'T WANT A NAFF HANDLING BIKE WITH A DODGY RIDING POSITION!). Sounds so simple doesn't it! But it isn't that simple, because a bicycle frame isn't just trigonometry and Soh Cah Toa, because a bike frame isn't made up of RIGHT ANGLED TRIANGLES!
#Motorcycle suspension geometry calculator series#
TURQ Series carbon fiber frame, Switch Infinity suspension technology, press-fit BB92, internally tunneled cable routing, 148mm x 12mm BOOST dropouts, sealed enduro max pivot bearings, integrated derailleur hanger, and axle.Ĭ/Series carbon fiber frame, Switch Infinity suspension technology, press-fit BB92, internally tunneled cable routing, 148mm x 12mm BOOST dropouts, sealed enduro max pivot bearings, integrated derailleur hanger, and axle.Hello, I want a simple EXCEL SPREADSHEET to recalc MOUNTAIN BIKE geometry (ANGLES & LENGTHS OF JOINING TUBES), when a LONGER FRONT SUSPENSION FORK, is fitted.īefore you suggest a program/website, read below first to the suggestions. T1, TURQ series carbon, Shimano XT, Fox Factory 34 ForkĬ2, C series carbon, SRAM GX Eagle, Fox Performance 34 ForkĬ1, C series carbon, Shimano SLX, Fox Performance 34 Fork T2, TURQ series carbon, SRAM X01 Eagle, Fox Factory 34 Fork T3, TURQ series carbon, SRAM XX1 Eagle, Fox Factory 34 Fork
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