Author Topic: Tap and die set for 1952 GF Plunger  (Read 1127 times)

Online groily

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Re: Tap and die set for 1952 GF Plunger
« Reply #15 on: 19.03. 2016 14:33 »
Because eg  BSW and UNC 1/4 at 20 tpi and 5/16 at 18tpi  are the same bar the thread angle, I suspect some people sell the latter as both.
Hexes on BSW should fit best into BSW/BSF weapons - though, again, there are close matches across spanner series too.  But then, yet again, I have seen hybrids with BS pitches and AF heads - but no idea where such things have come from. My A had several head bolts like that when I first got it. Tis a minefield!
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Bill

Online BSA_54A10

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Re: Tap and die set for 1952 GF Plunger
« Reply #16 on: 22.03. 2016 10:39 »
If you are going to fit UNC then you really should helicoil the holes to the correct thread .
The best place for WW now days are boating shops
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Bike Beesa
Trevor

Offline duTch

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Re: Tap and die set for 1952 GF Plunger
« Reply #17 on: 22.03. 2016 10:48 »

 
Quote
The best place for WW now days are boating shops

 Funny you should say that TrevorTrev, I buy a lot of stuff from my local boaties kinda who I had in mind, https://www.whitworths.com.au/
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

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Re: Tap and die set for 1952 GF Plunger
« Reply #18 on: 24.03. 2016 10:10 »
Yes and if you go stainless, most of the bolts will be cut so the shaft size will be the major diameter.
Thus I buy a WW bolt that is too long, cut the WW thread off and cut a CEI one on the shaft.
Older bikes have WW in the alloy and CEI into metal and for all tinwear.
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Trevor

Offline muskrat

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Re: Tap and die set for 1952 GF Plunger
« Reply #19 on: 24.03. 2016 19:16 »
I do the same for ww/cei studs. Cut the head off the ww bolt and cut the cei thread.
Cheers
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'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7