• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
  • When posting a classified ad, you MUST select a prefix from the drop-down next to the subject line. If you don't you will get an error and your ad will not be posted!
Tips
Tips

Speedometer Drive Pinion Bolt

Share this page

angelfj1

angelfj1

Yoda
Country flag
Offline
Replaced the speedometer cable on the TR250 today and noticed that the drive pinion peg bolt is missing.

peg_bolt.jpg


It must have vibrated loose (or I forgot to replace it last time :blush: ). At any rate, neither Moss nor Roadster Factory list this bolt. I can make one on my lathe if someone could please provide the dimensions.

BTW, is that a copper crush washer under the bolt head?

peg_bolt-2.jpg



Thanks, Frank
 
You guys and your lathe work give me heart burn

Jealous,jealous,jealous
 
Aw c'mon, Frank. If you can run a lathe, surely you can figure out how to measure for that peg!

However, I make out dimension A ~= .550", B ~= .780", C~= .220". Overall is 1.570". Spigot diameter is .232", shank is .308", threads appear to be 5/16NC.

I'm reasonably certain the shank is not important in this case, likely any 1.5" bolt would work if you turned (or even filed) down the tip.

The TRF diagram for TR6 shows both a flat washer (not copper) and lock washer, but my TR3 SPC shows only the lock washer (and that's all I found on the TR3 gearbox I just robbed it from). Bolt has the same part number though, so it should be the same for your TR250 as well.

BTW, most machinists seem to hate the Smithy "all in 1" machines. I wouldn't know though, as mine is a slightly earlier version of this:
ZPA2APk" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>

And no, it is NOT for sale! :laugh:
 
I think that is CRS

Or did you forget?
 
Shouldn't leave a chuck key in the chuck like that...it's an accident waiting to happen.
 
martx-5 said:
Shouldn't leave a chuck key in the chuck like that...it's an accident waiting to happen.
Click to expand...
Good point, but I assume the shot was staged to show what was included.
 
Back
Top