[Land-speed] pilot bearing

[23weldon]

Jim - Ball bearing if you have the right mounting space and shield on the 
outer side (to hold in the grease)and bronze oilite bushing in that order. 
Needle bearings don't like misalignment and aren't too happy with high 
speeds either.  Also the drawn cup Torrington needle bearings have to be 
installed exactly to their specs with the right kind of press tool (see 
their catalog). Also they need a full hardness inner race (58Rc+) or a 
ground shaft to the same hardness.   A conventional roller bearing (the kind 
with cylindrical rollers and thick ground inner and outer races will take 
heavier loads than a ball bearing but are somewhat less tolerant of 
misalignment.  They come in the same dimensions as ball bearings; but are 
hard to find and pricey.
Ed Weldon

----- Original Message ----- 
From: "Jim Dincau" <jdincau at qnet.com>
To: "land Speed List" <land-speed at autox.team.net>
Sent: Thursday, January 27, 2011 6:08 PM
Subject: [Land-speed] pilot bearing


> What do you like ? Bushing or roller? I currently have a needle bearing 
> unit, it is trash after about 80 miles of running. Trans input shaft 
> alignment to crank is good and bell housing face is square with crank 
> also.