[SEL] bearing clearances

[Joe Prindle]

I agree with Jim. I have a set of el cheapo chinese 5C collets and a couple of blocks that they will fit it, make your bolt from round stock, part it off, put it in the collet block and mill the flats in the mill. If you have a collet closer on your lathe, you could use a square collet and square stock, but lining up the square stock in the 4 jaw is a PITA, especially if you have many to make. Here is a link to what I am talking about, lower right hand side of the page: http://www.use-enco.com/CGI/INPDFF?PMPAGE=453&PARTPG=INLMK3&PMITEM=891-6016
I have the set of square and hex collet blocks and they are very handy.

What size bolts do you need and how many? I could get them and mail them to you if you would like.

Later,
Joe

Joe Prindle
Baraboo, WI USA
"All I ask is the chance to prove that money can't make me happy." Spike Milligan


--- On Fri, 3/6/09, Jim Kirkes <jd.kirkes at verizon.net> wrote:

> From: Jim Kirkes <jd.kirkes at verizon.net>
> Subject: Re: [SEL] bearing clearances
> To: stationary-engine at oldengine.org, "ATIS" <sel at lists.stationary-engine.com>
> Date: Friday, March 6, 2009, 8:34 AM
> Hi Peter,
> 
> 1 opr 2 thousands ought to work ok.  I would make the bolts
> out of round stock and mill the head square.  Finding 9/16
> will be tough and when you do 
> it will be expensive.
> 
> Jim
> 
> Jim and Diane Kirkes
> Hemet, California U.S.A.
> jd.kirkes at verizon.net
>   ----- Original Message ----- 
>   From: Peter Lowe 
>   To: ATIS ; oldengine.org 
>   Sent: Thursday, March 05, 2009 9:32 PM
>   Subject: bearing clearances
> 
> 
>   Hi All
> 
>   I know we have spoken about this before, but I did not
> log the answers.
> 
>   I am making two (2) cylindrical one piece bearings,
> 4.500" long, crankshaft diameter 1.450", how many
> thousanths of an inch clearance should I allow for when
> boring out the bearing to take the crankshaft? I have brand
> new crank arms and want a nice snug fit with no play, but
> not too tight so it will seize, the correct clearance in
> other words. Lubrication on this early model is grease.
> 
>   Also does anyone in Oz know of a source for 9/16"
> square steel bar. The early R&V's had all square
> head bolts and will have to make all new ones, NO they are
> not set screws etc etc etc, we have been there. These bolt
> are NO longer available, will post that info to my web site
> tonight.
> 
>   Regards
>   Peter, Oz
> 
> 
> ------------------------------------------------------------------------------
> 
> 
> 
>   No virus found in this incoming message.
>   Checked by AVG - www.avg.com 
>   Version: 8.0.237 / Virus Database: 270.11.8/1986 -
> Release Date: 03/05/09 19:32:00
> _______________________________________________
> SEL mailing list
> SEL at lists.stationary-engine.com
> http://www.stationary-engine.com/mailman/listinfo/sel