New nylon/stainless bushing offering - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

New nylon/stainless bushing offering

Old 01-08-2019, 09:27 AM
  #21  
SadFab CEO
iTrader: (3)
 
hi_im_sean's Avatar
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 4,482
Total Cats: 1,025
Default

Until the car see major braking and acceleration forces, the thrust issue is insignificant. Again, if the bushing is made and installed properly, there shouldn't even be contact, and it definitely shouldn't change with bolt torque. I design my bushing so that the sleeve is 0.010" longer than the bushing stack up when everything is installed. Bushing flanges should never be preloaded. No one else has made similar observations because they have good, properly installed bushings, and this doesn't occur. Also, testing it while the car is on jack stands the way you guys are doing in no way represents the real world for the specific data you are taking from this. You are loading the thrust faces like they should never be loaded, while not loading the arm laterally at all. While in use, in a 1G turn, the bushings will see over 1000lbs radially. There is no doubt the radial friction is far greater than any axial thrust loads while in use.

This is definitely an issue with poly bushings on the LCA rear facing bushing halves while under hard braking, as evidenced by the thrust face tearing I have documented in the mega thread. Short of custom machining the bushings, there is no way to fit a thrust element in there, as I have mentioned.

Last edited by hi_im_sean; Today at 08:09 PM.
hi_im_sean is offline  
Old Today, 02:50 PM
  #22  
Junior Member
 
Join Date: Aug 2009
Location: Lake Jackson, TX
Posts: 163
Total Cats: 6
Default

The sales pitch on the Nylatron bushings sounds good, but the primary benefit of moly impregnated Nylatron GSM over standard Delrin seems to be that it has less friction and more wear resistance (and therefore implied that it should not require any lubrication maintenance). From some layman's googling, it looks like standard Delrin actually has superior properties over standard Nylatron in most of the ways that concern us for this application (compression/rebound, friction/wear, and possibly water absorption/expansion?). The moly impregnated version of Nylatron used in these bushings should have slightly less friction/wear and be lighter (although I can't imagine the weight difference being substantial enough to affect 99% of builds) than standard Delrin, but is it substantially better than a properly greased/lubed Delrin bushing? I assume it would still be as susceptible dust and moisture intrusion as Delrin is, which is most of the reason for adding the grease fittings to Delrin bushings anyway, right? The idea of a set-it-and-forget-it "nearly perfect" bushing appeals to me, but can the Nylatron really deliver any better than Delrin--and without adding grease fittings?
jnshk is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
aidandj
Suspension, Brakes, Drivetrain
16
08-20-2015 02:37 AM
99mx5
Race Prep
14
12-04-2013 11:19 AM
redrider706
General Miata Chat
0
08-24-2011 03:19 AM
Pitlab77
General Miata Chat
2
02-03-2010 03:02 AM
johndoe
Insert BS here
3
03-01-2008 05:06 PM


Thread Tools
Search this Thread
Quick Reply: New nylon/stainless bushing offering


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.