i just got chassis engineering by haerb adams today in the mail and i was wondering about something i read in it. he says that urathane bushings are not that good do to the fact they can bind and need to be lubed alot, he says that nylon bushings are superior anyone have any insite on this??

 

I assume you are talking about nylatron 6/6 (commonly used for bushings). You could say they are superior. They are self-lubricating.. is unaffected by heat cycling like rubber and poly, and isn't brittle. The coolest thing? it can be dyed any color you want.

But it is MUCH more firm than rubber or poly.

 

delrin!

 

Are Delrin and 6/6 nylon the same thing?

 

some info on delrin

http://www.interstateplastics.com/meta/fmdel.htm

 

Good link Will...

 

If you're considering Delrin, you might as well just switch to spherical bushings IMO.

Delrin is probably cheaper though, and legal under more rulesets.

 

So basically we can just order some Delrin Rod already the same size as the control arm holes and slide them in...or I guess you would have to machine a lip so they don't slide around?

I guess then we can make offset bushings too

thanks for the link

 

Delrin is pretty cool stuff, for sure, but looking through the properties chart at the link above, I see a compressive strength of 18,000 PSI. That means ROCK HARD.

IMO, then, there are very few places on a Honda/Acura that could use delrin for a bushing.

Using my CRX as an example, You could use it on the front upper control arms, on the sway bar pivots (but not the endlinks) and probably one end of the rear upper link.
Basically any place that pivots or rotates, but doesn't require twisting.

Of course, spherical bearings are best option, and they are available from progress automotive. Maybe they'd like to sponsor me!!!

Jon



[Modified by Jon Nelson, 3:00 PM 3/11/2003]

 

Nylatron 6/6 is less brittle than Delrin.

 

Be warned that, at the point where you go to nylon, you had better be VERY sure that movement in the bushing is axial ONLY, with no need for compliance on other axes. Not saying that this is or isn't the case with any particular Honda models - I don't know from experience - but, if for example the two chassis pickups of an A-arm are not exactly in line with one-another, things can bind, break, or wear like mad.

Kirk