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Dec 06, 2008 5:25 pm
Dec 06, 2008 5:25 pm
Subject: Re: KI-Gas Pump Threads
Hello,
I have had similar problems with the Ki-gas pump on my M45. The thread is 5/16 inch British Standard BRASS thread, which is 26 TPI. It has a 55 degree thread form. Cycle thread is also 26 TPI but has a 60 degree thread form. Cycle thread is used on Lucas headlamp bolts.
BSP (and Cycle) taps and dies are availble from the nice people at Tracy tools (http://www.tracytools.com/).
For those of you on the Continent, you may have spotted that with 25.4 mm to the inch, you could get away with 1.0 mm pitch metric threads.
My Ki-Gas now works beautifully...
Colin M34
Hello,
I have had similar problems with the Ki-gas pump on my M45. The thread is 5/16 inch British Standard BRASS thread, which is 26 TPI. It has a 55 degree thread form. Cycle thread is also 26 TPI but has a 60 degree thread form. Cycle thread is used on Lucas headlamp bolts.
BSP (and Cycle) taps and dies are availble from the nice people at Tracy tools (http://www.tracytools.com/).
For those of you on the Continent, you may have spotted that with 25.4 mm to the inch, you could get away with 1.0 mm pitch metric threads.
My Ki-Gas now works beautifully...
Colin M34