Tank thread size?

[ArmandTanzarian]

What is the thread size of a lambretta fuel tank? (i.e. the threaded stub at the bottom that the tap screws onto)

[Boo]

Hi, the thread on a lambretta tank is M16x1mm pitch hope this helps.

[Knowledge]

AT,

I have several tap-fittings here cut from tanks. Do you need one?

Martin

[ArmandTanzarian]

I've just welded up the split in my tank. It went at exactly the same place as my last Saigon Special; around the threaded bit. I was going to run a die around the stub to tidy it up a bit after my bodgery. Hence I need to know the size. I don't think my welding skills are quite up to fitting a new stub.

If it still leaks after my efforts I might have to get something else. Maybe a Diablo or an SSP.

[Knowledge]

You will struggle to find a tap to suit this thread, but good luck.

meanwhile, have a look at item 170308281401 on epay. This is a thread chaser, or thread restoring file. You can get lots of different types and all sorts of prices, but it is a very useful tool to have in your tool chest.

Do a search on epay and see what you can find.

[Boo]

Any good engineering tool supplier could get you an m16x1mm die they probably would have to order one because its not a standard size or ask around and see if you can borrow one.It could be a bit pricey just to re-cut one thread.

[ArmandTanzarian]

I didn't realise that it wasn't a standard size. typical. Maybe the thread file is the way to go.

I'll get more use than a single die

http://cgi.ebay.co.uk/HSS-Die-M16-x-1-1 ... 240%3A1318

[RICSPEED]

i got some new indian gp forks that had not been threaded properly (wont say wher from) so the top cup and lock nut would not go on ,thread file saved the day