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The trees are at 0°, the neck numbers vary from what research I can find but assume it's set at 31°.. the only way to really know is to laser it and actually measure the trail.. Once that number is identified I can calculate the take to the exact degree,.. Offsets, tube lengths, tire diameter, triple tree height and wheel base are all measurable to put into the equation to help me determine exact tasks but I'm really not concerned about that.. I really need my trail at a minimum of 6"... Also you need to remember the fork length raises the whole bike it will not change the relationship of rake to trail...
I beg to differ...plug the numbers in!!! Better yet... measure! The Only thing the MoCo changed when claiming different Rake numbers.. when what really changed was the trail!!! Lengthen the forks and tell me what happens...Note; The frame will No Longer be Parallel with Ground..
I beg to differ...plug the numbers in!!! Better yet... measure! The Only thing the MoCo changed when claiming different Rake numbers.. when what really changed was the trail!!! Lengthen the forks and tell me what happens...Note; The frame will No Longer be Parallel with Ground..
You are correct, RB racing has two calculators.. Ones just a standard calculator and the other one is supposedly a professional Rake and Trail calculator.. The standard one never showed any difference in trail when extending the tubes by 2 in. The professional rake and trail calculator however did so I was getting conflicting information but will now only use the professional calculator..
In the following charts we are looking at a stock FL front end with 1.45" of offset in the trees and stock length tubes and 2" over compared to a modified front end with an offset of 2.45" offset on the trees with stock length tubes and 2" over..
Be Very Careful... "Stock FL Front End" has More than One Meaning these Days... 4-Speed??? Rubbermount??? Softail??? All completely Different...BTDT
I always Measure... No Internet Calculators for Me...Thanks.
Soon as the Big wheel "thing" stabilizes...or hopefully disappears... I will get a Cheap Raked tree, and finish my Sidecar Rig...shooting for about 3 inches of Trail...Hacks being Hacks!!!!!
Last edited by Racepres; Aug 18, 2023 at 08:30 AM.
Be Very Careful... "Stock FL Front End" has More than One Meaning these Days... 4-Speed??? Rubbermount??? Softail??? All completely Different...BTDT
I always Measure... No Internet Calculators for Me...Thanks.
Soon as the Big wheel "thing" stabilizes...or hopefully disappears... I will get a Cheap Raked tree, and finish my Sidecar Rig...shooting for about 3 inches of Trail...Hacks being Hacks!!!!!
my trike gets a shocking death wobble. ive put on 2 steering dampers to counteract the problem could it be the rake as the cause of the problem
At least for rubber iso baggers, I really think the best thing I did to eliminate the wobble was to install a spherical bearing swingarm kit. My ‘91 FLHTC is real stable in the turns and powers out with no sign of wobble. Yes, I have done 100 also, very stable.
At least for rubber iso baggers, I really think the best thing I did to eliminate the wobble was to install a spherical bearing swingarm kit. My ‘91 FLHTC is real stable in the turns and powers out with no sign of wobble. Yes, I have done 100 also, very stable.
Spherical bearings for the swing arm is an improvement but it's not a cure all.. There are many other issues that can cause death wobble weight balancing speed alignment trail the list goes on..
Spherical bearings for the swing arm is an improvement but it's not a cure all.. There are many other issues that can cause death wobble weight balancing speed alignment trail the list goes on..
Agree very complex. But intuitively speaking, eliminating as many flex points seems the thing to do. My front engine mount is the stiffest I could buy (who cares about a shaky bike at idle).
Then the spherical bearing kit in Swingarm eliminates more flex. Then knowing I built the bike with perfectly aligned drive, primary and final.
Yes I kept the damper rod forks, but installed Ricor Intiminators. I have had them in my Triumph for years and love them.
FWIW: Not to interject Mr. Myagi into this but my 2010 GL1800, and many year models had the death wobble, installed from the factory. One damper fork and one anti-dive fork. Familiar?
solution: Traxxion Engineering full Monty suspension upgrade. Cartrigage fork inserts, fork bridge above wheel, All-***** tapered head bearings and a Penske/TE monoshock. No change to factory front end geometry the bike plants itself in turns and yes, I HAVE had Mr. Myagi up to 120 and set the cruise control food for thought
ok the wine is making me say too much time to switch to scotch
At least for rubber iso baggers, I really think the best thing I did to eliminate the wobble was to install a spherical bearing swingarm kit. My 91 FLHTC is real stable in the turns and powers out with no sign of wobble. Yes, I have done 100 also, very stable.
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