1927 Triumph model N

Discuss really, really old bikes here.
User avatar
pooh
Posts: 867
Joined: Wed Feb 18, 2009 11:00 am
Location: Darkest Daventry

1927 Triumph model N

Unread post by pooh » Sat Jun 20, 2009 2:18 pm

My mate has broken the Phospher bronze pinion pair that drives the oil pump The pair make a 90 deg (it resembles a rack and pinion steering drive) and sits on the back of the timing chest in a housing..If anyone can help please PM me for his phone number
Airhead by choice

Image

graffian
Posts: 254
Joined: Tue Mar 03, 2009 6:47 am

Re: 1927 Triumph model N

Unread post by graffian » Sun Jun 21, 2009 10:16 pm

That will be a worm and pinion, won't it?

I am sure a gearey type person will say it's more complicated than an acme thread, but looking
at a worm they look like acme threads. I was intending on making one for my velo, then scored a new
pair of gears, very cheap. The velo is a 20dp 14.5 º gear, it's reasonably easy to get these figures off the
Worm and gear. You might be lucky and find a stock gear from one of the gear makers fit's.
So if you know someone with a lathe they should be able to make you one.

Post Reply