Tilley Thread Types

Hi All

Does anyone know what type and size of the thread on Tilley lamps for the following:
Generator - the thread that screws into the cock?
The thread for the cock into the tank, X246B and the Pork Pie adaptor into the tank?
Cheers
Peter

 

Tilley used their own thread sizes. Presumably there are near-enough equivalents in the standard thread sizes and types but it's all voodoo to me. Someone who knows will probably be along soon...

 

Cheers

 

@AussiePete

Have a read of this thread. Threading question for loco-Stu and other gearheads

And this one X246b control cock thread size

 

@ROBBO55

Thanks for the information, it solves the mystery.

Cheers

 

your welcome.

 

I was looking for something else and came across this thread, thought I'd add to it so it will show up in search results:

Control cock to fount thread: 1/2" BSB (British Standard Brass)

Vapouriser to control cock: 11/32 - 36tpi UNS (Unified Special) (Actually not quite but the thread angle is correct, just the shape of the tooth but still compatible)

Most other small fasteners I have come across such as in galleries or handles have been BA (Typically 2BA or 4BA)

I haven't actually measured up any pump threads yet. I'm known at work as the "thread doctor" so maybe at some point I should do a bit of a crib sheet on Tilley threads! Anyways, hope the above may help.someone...

 

Are you 100% sure? I've found the 60 degree thread angle of BSCY (British standard Cycle) is a better fit. In the past I've run a 1/2" BSB die over the control cock threads and had to clean away swarf. I noticed the cock was a slacker fit in the socket though the washer ensured it didn't leak.

 

Interesting! I've actually had the exact opposite! Were you using a split die? All dies have a production tolerance so adjusting a split die to suit is part of the process for precision threads. I did see somewhere ( sorry I can't remember where) that someone had measured the 60° on an optical comparator, but i did id only go e by eye from the thread gauge...

 

Will have to see if I can find an optical comparator to check profile, the nagging feeling in my mind is telling me that Tilley didn't like to mix things up too much, so a common 60 degree profile might make more sense. Perhaps I have inadvertently adjusted my die out enough to "suit". Further investigation required!

 

Yes. It's beginning to look like I "adjusted" it too much.