Run in stand/dyno build.

[dwilfong]

 

[Terry Keeley]

Yup, looked at those Lovejoy type couplings but didn't want to "soften" the drive line thinking it might mess up the dyno information.

Re-working the ball and pin as we speak, I might be able to fit a 1/4" pin in there (was 0.160") with flats. If that breaks I'll probably try these...

 

[dwilfong]

Terry I don't think it would change any readings. Would be nice to try a back to back and see?

 

[Terry Keeley]

Terry I don't think it would change any readings. Would be nice to try a back to back and see?

Ya, prolly wouldn't effect things too much, would be consistent at least.

When I was figuring this whole thing out months ago I looked at Lovejoy fittings and they weren't rated for near the rpm, I'm sure Dave's would work tho...

 

[dwilfong]

Looks like it will drop right in place with out to much changing things also.

 

[Terry Keeley]

Looks like it will drop right in place with out to much changing things also.

It's never that easy, lol!

 

[dwilfong]

yes but you can dream some times can you not.....LOL

 

[Marty Davis]

View attachment 283250

That is what we use for our dyno.

 

[dwilfong]

When you going to fire that bad boy up again?
Better yet sell it to me I will give it a work out.....LOL

 

[LohringMiller]

We ran a Lovejoy coupling as well. It needed the hardest available rubber element to survive.

Lohring Miller

 

[Charles Perdue]

Also recommended is a sleeve over the rubber spider as at about 20,000 rpm and above it has the tendency to try to grow out of the coupling.

Charles

 

[RaceMechaniX]

Agreed, if using a Lovejoy buy the hardest compound available and buy spares. A sleeve over the outside is not a bad idea either, but may lead to further imbalance.

 

[Charles Perdue]

I have had no problem using the sleeve over the rubber at all. I am not using a lovejoy coupling but one that I made.

Using .020 clearance from the rubber to the sleeve with the sleeve pressed on to one side of the coupling and .010 clearance from the sleeve over the other side of the coupling.
I have spun this combination to HIGH RPMs.....

Charles

 

[dwilfong]

OPS made a nice coupler also with round isolators on 3 pins that went in to the receiver. I will look and see if I can fin a pic of it.

 

[dwilfong]

https://www.ebay.com/itm/VINTAGE-OP...593829?hash=item3f39426b65:g:qPoAAOxyOBJRDs8c

 

[Marty Davis]

When you going to fire that bad boy up again?
Better yet sell it to me I will give it a work out.....LOL

As soon as this COVID thing is done and I can get a good vaccine.

 

[Terry Keeley]

Back at it, look what I stole off FleeBay!

 

[Tom Kelly]

Back at it, look what I stole off FleeBay!

Wohlhaupter facing/boring head.

 

[BobHorowitz]

Nice find. I bet there are alot of these laying around since the advent of CNC machines. I still do alot of manual machining and I often wish I had one. Can I ask how much you paid for it?
Bob

 

[Terry Keeley]

Yup, Wolly UPA-2 inch version, kinda rare.

It had a Moore jig grinding adapter on it that was a bear to get off but I snagged it for about 1/4 of what it they're worth, paid $300 for it.

You can easily take a 1/2 thou out of a hole with it!