I have started stripping my rear wheel ready for a rebuild and am checking the associated bits for wear etc. The Half spindle has a thread on the end which then has a nut which holds on the brake drum cover . This tread has been flattened off a bit and would probably be recoverable with a die , does anyone know the correct thread for this , it measures about 720thou.Thanks Jeff

email (option): m90disco@fsmail.net

Hi Jeff...Are we talking WDM20 models here?...Ian

email (option): ian@wright52.plus.com

yes sorry. wm20 1941 . Jeff

email (option): m90disco@fsmail.net

Hi Jeff..I'll check it tomorrow to confirm but I think it's 3/4 x 20 cycle thread...Ian

email (option): ian@wright52.plus.com

That will be great if you could check for me. Thanks Jeff

email (option): m90disco@fsmail.net

Hi Jeff...It is indeed 3/4 x 20 Cycle Thread....Ian

email (option): ian@wright52.plus.com

Thanks for the info, I will see if I can get hold of a die to suit now.

Many thanks Jeff

email (option): m90disco@fsmail.net

Hi Jeff...Google 'The Tap and Die company'...They are in London and have pretty much everything....That one will cost you a couple of bob though...(Make sure you get a high speed steel die..not a carbon steel one)..Ian

email (option): ian@wright52.plus.com

Thanks . With cycle thread I never realised that you could get the same size with two different tpi's like 20 & 26 .Will give that company a try and see how much it will cost ,otherwise it may be cheaper to buy a new wheel spacer.
Many thanks jeff

email (option): m90disco@fsmail.net