Rivets

It's a long time since I did my apprenticeship, and I can't remember the allowance formula for round head rivets. How much do you leave sticking out before you start to peen it over? - I thought it was 1 1/2 times the dia. but that seems to be far too much. Kev.

Reply to
kev
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You thought correctly. Finished shop head's diameter (the peened head) should be 1 1/2 times the original diameter, and 1/2 the orig. diameter in thickness. Thus, 1/4" rivet should extend 3/8" before peening. Resulting shop head should be 3/8" in diameter, and 1/8" thick (or tall). This is the standard practice for aircraft riveting; your application could be different.

Reply to
Dale Scroggins

Speaking of rivets, does anyone know of a reasonably priced source for iron dome head rivets? Specifically, 1/8" x 1/2".

Each war helm needs perhaps a hundred, you see, & they are getting both difficult to find & expensive.

Any UK leads welcome ;o))

Regards,

J. Kim Siddorn,

Reply to
Kim Siddorn

Bath ! Could hardly be nearer.

I made a few helms last year

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rivets for these were obtained mail-order from
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were generally a bit of a faff - wrong sizes in stock, that sort of thing.

So I went out to get a sandwich at lunchtime, walked around the corner

100 yards from the office and straight into Avery Knight & Bowlers (by Green Park station and Sainsburys)
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over the counter. Loads of them.
Reply to
Andy Dingley

============================ I've had a look in my garage and found approx 170 dome head ,1/8" x 1/2" rivets. I will bring them toClutton . Unfortunately I am unable to bring an engine as my tow car was rear ended by another and is in the bodyshop for repair. I will however bring my A40 Farina on Sun. Btw, What is the difference between helm and helmet? Mike.H.

Reply to
Mike.H.

"et" I thnk but he did not wear one in the film. Only a hooded coat :-))

Martin P

Mike.H. wrote:

Reply to
Campingstoveman

Reply to
Mike.H.

Nick, Look at it as deep in the sentence and not at the very beginning. You should now sleep effortlessly during the night :-))

Martin P

Reply to
Campingstoveman

That's very kind of you Mike, thank you. As things stand, I may be at Clutton on Saturday exhibiting, but more likely flash out there on the bike. However, Sunday I shall be out there bright and early with goodies & a "new" engine to show off.

Originally, "helm" indicated an armoured head covering that had cheek flaps & a full ventail of mail.

A "helmet" was a plainer, simpler device that had neither.

Now, gentlemen, is that true - or bluff ? ;o))

Regards,

J. Kim Siddorn,

Reply to
Kim Siddorn

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