Caster Shim Dimensions

Joined
Jun 13, 2003
Messages
2,810
Website
www.urbanlandcruisers.com
I dont have it offhand but I have to ask why? Does it make a difference? NAPA sells the 2.5' shims is bronze. Real nice and cheap. WIll not crack. NAPA should be able to give you the details. The 2,5 and the 6 will be the exact same size except for the thickness difference
 
Joined
Jun 19, 2003
Messages
650
Location
Nowhere Nebraska
I have a 4" lift on my 40 and it does tend to wander on the road. I've checked my tre's so I figure I'll ad shims, what size should I get for a 4"?
 
Joined
Sep 17, 2003
Messages
589
Location
Edmond, OK
It depends on the manufacturer and how much caster correction they built into the springs.

TPI sells their kits with 6 deg. shims. Some say you can get away with 2.5 or 4 deg.

The best way to find out is to take the 'Cruiser down to an alignment shop and find out how far it's off from stock.

Somebody correct me, but I think 1 deg. NEGATIVE caster is stock right? I could very well be wrong. But!!! The alignment guy should be able to look that up too.

Jody. -- with fading memory.
 
Joined
Mar 28, 2002
Messages
4,846
Cause I've a buddy who is a machinist, and can make them out of steel for nothing. Then I can play and see what shims I need, without buying a bunch. I can either have them welded to the perch, or have the perch moved and pass them on to someone esle who is in need. I did not realize NAPA has the bronze ones. Thanks!

I know some have used old spring stock (tapered), but I would still need the thick end measurements for 2.5 and 4, to have a starting point.
 
Joined
Aug 2, 2003
Messages
3,797
Location
Naples/Big Pine Key, Fl
You should only need shims in the front if you changed your shackle length. I think it runs:
1 1/2 shackles - 2 degree shim
2 1/2 shackles - 4 degree shim
Could be wrong, also check your steering components for wear, worn parts show up more when geometry is changed. BTW shims are cheap, go buy some and you'll be sure of the correct thickness.
 
Joined
Mar 28, 2002
Messages
4,846
We're all having a really nice conversation here, cept the requested measurements have not materialized :D

Shims are cheap...steel shims are hard to find, and I do not want aluminum or bronze sandwiched between the sping pack and the axle.

Call me anal, and each to their own :cheers:
 
Joined
Aug 2, 2003
Messages
3,797
Location
Naples/Big Pine Key, Fl
Just happened to be under the truck fixing a leaking fuel line, so I went ahead and measured mine which I believe are 2 degree shims. Thick part was about 1/4" thick by 5" long. Very hard to read the tape under there, but there's your answer.
 
Joined
Mar 14, 2003
Messages
16,100
Location
Gig Harbor WA
not that it helps but most larger towns have a spring shop, which will make you any shims you wish.....and cheap AND out of metal not alum.

in Tacoma its RightWay Spring.

Seattle Benz Springs I think.
 
Joined
Mar 27, 2003
Messages
6,363
Location
Georgia Tech
I have bronze shims with zero issues.
For whoever it was that asked-I have 2.5 degree bronze shims from Napa on my 4" lift. Should be all you need unless you have the TPI lift. Tremendous improvement in tracking and general handling.
 
Joined
Dec 2, 2003
Messages
7
No offence intended, but if you have a machinist that doesn't know how to figure the dimensions for a shim, you should find a new machinist.
 
Joined
Mar 28, 2002
Messages
4,846
Thanks for the chuckle...however...

Let me put it this way. I will not waste his time, and will do all the legwork with dimensions, as he is working two jobs to keep a sick wife in medications. So you can call me the putz for looking to the LC community and the stats on line, instead of trying to figure it myself.

:cheers:

gb
 
Joined
Dec 23, 2002
Messages
246
use trigonometry to figure out the dimensions. they are about 4.5" long so with your fancy calculator punch in tan/angle required x 4.5" to get the thickness at the end. :eek:
 
Joined
Mar 28, 2002
Messages
4,846
Trig...

That's a distant memory from over 20 years ago. I was hoping to avoid bringing it back up and thought someone might have taken measurements at some point. :)

That, and memories of geometry from a drafting course for civil engineering a few decades ago will help.

Sigh....

I guess I will have to go there.

:D

gb
 
Joined
Mar 27, 2003
Messages
6,363
Location
Georgia Tech
I'd do the math for you, I'm taking College Algebra/Trig right now...I'm not too dumb-got a 102% on my last trig test. :D
However, someone already posted the dimensions for their 2.5 degree shims, what more do you need?
 

Users who are viewing this thread

Top Bottom