1` 1/8th BSP die nut Where to buy or borrow

Re: have another measure up mate

Steve
This would be a last resort!

If you can't find the right die then try an engineering shop that can cut threads per inch on their lathes - simple job of mounting the tube and selecting the correct TPI on the lathe gear box.

As I said - Last resort.

Peter.
 
Re: have another measure up mate

I've yet to see Dots and Melons, in Tillingham beaten by a peculiar thread size. Not only do they have all the modern stuff, they have a vast range of old agricultural engineering kit. Look them up in the phone book (cor, old technology!)
 
Drill Service

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G.J. Hall
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The thread form, pitch and depth of thread are identical bwtween nominal 1" and 6" (i.e. including 1 1/8").

If the propeller aperture is big enough, you can use a standard plumbers threader with 11tpi chasers and adjust the diameter to suit what is already on the tube. They are ratchet operated and the handle is removable.

Unfortunately, a 1 1/8"BSP thread implies a small propeller and consequently a small aperture. A plumbers threader is around 160mm in diameter over the protruding chasers. The other problem is that they generally have a guide bush some 150mm from the start of the chasers. You may not have sufficient length to accommodate that either.

Given a big enough aperture, any plumber will be able to oblige. Just ask for 1" or 1 1/4" chasers and wind them in or out to suit.

If you become really desperate, it should be possible to cobble a bush with a single 11tpi chaser held in a slot.
 
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