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#1
09-09-13, 06:01
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threads
The thread O.D. measures up over 30mm and TPI is 14 .
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#2
09-09-13, 06:38
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These days I'm more used to dealing with motorcycle pipes of 1/4-5/16-3/8 BSP threads. Back in my Dry Cleaning days we had to thread 1/2-3/4-1" and larger pipes for steam. I guess these bogie wheel tubes were dealt with as per a plumbers pipe.
Ron
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#3
09-09-13, 09:30
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Having had a look I think they are all parallel threads. The conduit uses a pipe thread too.
We had the bloke at work last Friday who services all our compressed air and vacuum lines. He looked at the conduit thread and had nothing to fit in his van. We suspect its a size that's fallen out of favour today. The pipe thread sizes can get confusing as Micheal has said, the size listed isn't the thread OD as on a bolt. Thread cutting on a lathe can produce any thread you desire. As long as you have the pitch and TPI info you can turn an internal or external thread to your chosen diameter. This is how I did the filler necks on the fuel tanks.
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#4
09-09-13, 09:54
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Hi Ben the thread on the conduit is "conduit" thread the older electricans had the gear I think it is all 16 TPI, and one size matches with UNF (5/8???)
__________________
Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions....
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#5
09-09-13, 16:33
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other threads
I forgot the other thread profile in addition to BSF, BSW, UNC, UNF, BSPP and B.S. Conduit;
FOC. Former Owner Choice. You know when someone identifies one while trying to sort out some bit on the carrier as they mutter "FOC" with assorted emphasis.
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