What is it? CXCIV

Aug 23, 2007 26 Replies
E

I want to consider what you say but I don't understand.

I see six support arms if we're talking about the same thing. Each pair forms a triangle with the screw as the base.

I'll call the three pieces that are free to pivot fingers. The bottom step of each finger appears to be 3" long.

The inverted piston would be like a coffee can but bigger. The ring would start out lying on the rim. The tool would be lowered (knob end up) until the fingers extended about 3" into the piston so that the short second step of each finger would be in the piston ring.

Then the tool would be expanded, pressing the long steps of the fingers against the inside of the skirt. That would prevent them from pivoting, and the second steps would expand the ring enough to tap it carefully down onto the outside of the piston.

It looks stable to me.

Vote
Twitter Facebook LinkedIn
A

I've found DoN's guesses to be observant, thoughtful, and well founded.

Vote
Twitter Facebook LinkedIn
P

I found your top posting to be thoughtless, ill-founded and hard to fix.

Todd was displaying something called humour. Irony to be precise. Look it up. And then look up bottom-posting and why it's better.

Vote
Twitter Facebook LinkedIn
D

A) Whoooosh B) I tend to find people who top post to be unobservant, thoughtless and destined for the kill file.

Vote
Twitter Facebook LinkedIn
S

Depends, if you don't/can't/won't trim, then I much prefer you top post. Otherwise, when in Rome ....

Vote
Twitter Facebook LinkedIn
D

[ ... ]

What you are calling fingers I was calling support arms.

O.K. I *guess* that it could be used that way -- but I would have designed it with something as part of the device to control the tilt of the fingers in the basic linkage, not depending on a cavity which may or may not be available in the piston.

And there are too many likely lumps inside the piston to really allow it to work reliably. A piston is not typically as empty as a coffee can. There are the bosses which carry the wrist pin bearings and keep the connecting rod centered.

But unnecessarily complicated to use.

I still think that it serves some other function.

Enjoy, DoN.

Vote
Twitter Facebook LinkedIn
D

According to Alexander Thesoso :

Thanks -- but this was a different Don (no upper case 'N') -- and it sounds as though he was posting from experience with the device, while I was simply guessing based on the apparent behavior and materials

-- plus the 8-2/0 marking.

Enjoy, DoN.

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required