Crank vs Re-index - Ride Quality

[Gunney]

So I have an interesting scenario


After cranking the tbars on Amy she bobs on her suspension. The only way I can describe it is that it’s like driving a mini or a short wheel base sports car.


I was under the impression that re-indexing them vs cranking them had no effect on the stiffness of the suspension? (i.e. BOTH would result in the same stiffness)
BUT I’ve done some reading and the manufacturers who sell torsion bar keys claim that re-indexing / fitting keys will maintain a softer ride quality. (In comparison to just cranking)
So should I re-index to try soften up the ride a bit or is it going to make no difference??

I’m confused???

Does anyone have any good resources I use to educate myself?

 

[spressomon]

Changing the ride height via adjusting the torsion bar will not change the spring rate...only the effective ride height. Its possible you have raised the ride height too much or enough to significantly reduce down travel/droop. What is the vertical measurement from the center of the front hub to the lower fender lip?

What's the condition of your shocks?


And for information go here: https://forum.ih8mud.com/100-series-cruisers/491948-those-torsion-bar-questions.html

 

[Mxndrnks]

Based on your build thread...it sounds like you are too high. At 22" hub to fender in the front I am actually surprised you were able to get the droop you have.

 

[re_guderian]

Could it be that mfg's of "keys" say that to sell more junk? I cannot wrap my head around how re-indexing does anything different than "cranking". They're just two different ways to preload the bar to the same point, no? One just has to be used when you run out of threads...

 

[Racehoss]

It has to do with droop. Correct?

 

[re_guderian]

It has to do with droop. Correct?

Only if you re-index so much that you have tension on the t-bar at the first thread, right? It other words, when I reindexed mine, they would still droop all the way. Otherwise, you'd never be able to get the adjustment bolt started in the threads because of the torsion being applied, right?

 

[Gunney]

I dont know, I DO have the prescribed 60mm of droop, I have brand new nitro chargers.

Im going to play arround this weekend and see if what I can figure out.