Classic cars forum & vehicle restoration.

[Miken]

I thought this might be of interest.
It has nothing to do with old cars. But it easily could have (and it is a Bentley engine!).
I needed to machine some pistons all over on my lathe, but how do you hold them?
All the pistons that Ive seen, cars or motorbikes have a turned register in the base of the skirt which is for locating it during the manufacturing process.
First you need to make an eye bolt.
Then you turn a mandrell to locate the piston on:

[Ray White]

I agree that is probably the best way.

How about some thin swarf. ? This was my final pass on a hollow distance peice for the bolt mounted Altette horn.

[Penman]

Strikes me that the set-up shown in the first 2 pics must have some tight "non-clearances" otherwise you would get a lot of chatter on the lathe.
_________________
Bristols should always come in pairs.

Any 2 from:-
Straight 6
V8 V10

[Miken]

[Ray White]

I think hollow con rods were often found in aero engines but not all used them to lubricate the small ends. I understand the system is still found in high performance engines but not necessary in everyday use.