Speedo drive thread size
Posted: Mon Mar 30, 2020 11:11 amWhat is the thread size of the speedo bush that hold the worm drive in, please? The hub has been at the powder coaters and the threads are clogged with paint and it's hard.
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Speedo drive thread size
https://www.ilambretta.co.uk/forum/viewtopic.php?f=10&t=12549
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Posted: Mon Mar 30, 2020 11:11 amRe: Speedo drive thread size
Posted: Mon Mar 30, 2020 11:31 amM14x 1.5 pitch I believe
Re: Speedo drive thread size
Posted: Mon Mar 30, 2020 11:46 amThanks, but the appears to be thread 16mm but not sure about the pitch.
Re: Speedo drive thread size
Posted: Mon Mar 30, 2020 12:29 pmSure it’s the same as the side casing oil plugs
Re: Speedo drive thread size
Posted: Mon Mar 30, 2020 2:34 pmA quick look in my notebook shows I previously measured one as M16 x 1.5mm.
Re: Speedo drive thread size
Posted: Mon Mar 30, 2020 8:30 pmthe side casing plug hole is M16 x 1.5, as i had to buy a tap recently fo clear the threds on one.
im positive the speedo drivebush is M14 x 1.5 as i purchased a tap to clear the threads after powder coating a hub, many years ago.
The "nut" that screws onto it is M12 x 1.00mm.
im positive the speedo drivebush is M14 x 1.5 as i purchased a tap to clear the threads after powder coating a hub, many years ago.
The "nut" that screws onto it is M12 x 1.00mm.
Re: Speedo drive thread size
Posted: Tue Mar 31, 2020 12:20 pmbike grim wrote:Sure it’s the same as the side casing oil plugs
It is Gareth, just tried it on a S3 stainless type but on brass version it wouldn’t
Re: Speedo drive thread size
Posted: Thu Apr 02, 2020 4:38 pmCan confirm m16x1.5, thanks for your help.