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#1
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Lynn,
I didn’t have any problems with bolting the top on I just need to make a nut part number C01UC 103010. It says in the manual that it is 1/2" BSF but I am questioning the 16 TPI part. I think that it is a misprint and that the thread is actually different maybe 18 TPI. Stephen |
#2
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Use a pitch gauge, but if you don't have one just put a ruler against the threads and count how many are in an inch.
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#3
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I have checked, and the thread on the bottom of the column is 12 tpi, which is BSW -( British coarse) which will be 1 thread different than UNC.
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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.... Last edited by Lynn Eades; 02-05-12 at 22:59. Reason: clarity |
#4
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BSC... Interesting. I had no Idea. Thanks guys.
Stephen |
#5
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BSC is British Standard Cycle thread, used in motorcycles. Most of these are 26 TPI, with a few exceptions.
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1967 Land Rover Plant Repair Vehicle 1941 Matchless G3L 194? Wiles Junior Trailer 1941 Morris Commercial CS8 |
#6
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Alex,
![]() While you are being so precise, it would be more accurate to say that BSC threads were used in some old leaky motorcycles. ![]() How is that carrier coming together? Stephen, as has been pointed out, It is referred to as Whitworth, or British Standard Whitworth. 1/2" is the problem size as it is 12 TPI where as 1/2" UNC has 13 TPI. The other common sizes 1/4", 5/16", 3/8", and 7/16" are the same TPI as their counterparts (BSW and UNC) This is not the case with the fine threads (BSF and UNF)
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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.... |
#7
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Lynn,
I have one of the newer Triumph Bonnevilles. No Whitworth threads but it does leak. Does that count? ![]() Stephen DeMocko ’44 MKII So Cal, USA |
#8
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I dont know guys, 4-1/2 threads over 1/4" sure looks like 18 pitch to me. A forum friend (Thanks Mike) says the nut from the bottom of the steering column goes on ok. I have one coming from Brian A. (thanks Brian). Maybe its 20 but it seems less as it was a bit hard to get my calipers in there especally as i use them as scribs sometimes. Ends are warn a bit.
Stephen DeMocko '44 MKII So Cal, USA Last edited by SDeMocko; 04-05-12 at 17:27. |
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