Sinclair comp rest top bolt pattern

[Alex Wheeler]

I need to make a top to fit a Sinclair comp rest and dont have one to measure. Anyone know how the top is bolted to the post? I think theres a 1/4" cap screw in the center and a smaller screw to keep it from pivoting.
Thanks

 

[ridgeway]

Yep...1/4-20 cap head in center and 8-32 off set

 

[Alex Wheeler]

Yep...1/4-20 cap head in center and 8-32 off set

you wouldnt know how far and what angle the offset would you?

 

[ridgeway]

It's in same center line as the milled slot. Just eye balling with verniers...the lock screw is offset .350" from center to 8-32 on opposite side of slot.

 

[ridgeway]

Measured it with pins...came up with .339" from center to center.

 

[ridgeway]

With screws....

 

[Alex Wheeler]

It's in same center line as the milled slot. Just eye balling with verniers...the lock screw is offset .350" from center to 8-32 on opposite side of slot.

Perfect. Thanks a lot for doing that. I assume that milled slot is probably on a 45 degree angle to the rear?

 

[ridgeway]

I don't think it's angled at all. Just a straight slot on center

 

[Alex Wheeler]

http://www.targetshooter.co.uk/wp-content/uploads/2014/01/Sinclair-Rest-Jan-2014-Pic-2.png

Theres a picture of the top with 3 holes. Looks like maybe a 60 degree from centerline maybe.

 

[ridgeway]

Hope this helps....

 

[Alex Wheeler]

Perfect!!! Owe you one.

 

[ridgeway]

I made a 5" top and and made a new course threaded post with just one large 82° flathead screw in center. That fine threaded post is next to worthless, lol.

 

[LRPV]

Alex, for what it's worth I think you should make one that lets the top swivel like a Randolph.

 

[IdahoSharpshooter]

there is a bit of near-sardonic humor in all of this. Alex had one, and sold it to me a couple weeks before Christmas...

 

[Alex Wheeler]

there is a bit of near-sardonic humor in all of this. Alex had one, and sold it to me a couple weeks before Christmas...

I know, lol. I forgot to measure it up.

 

[butchlambert]

I made a 5" top and and made a new course threaded post with just one large 82° flathead screw in center. That fine threaded post is next to worthless, lol.

Chuck, If you did that you would have to have another marineer wheel.

 

[ridgeway]

Chuck, If you did that you would have to have another marineer wheel.

Yes...made the post a nice fit to a Hart mariner wheel.