Author Topic: Thick flange barrels for A7  (Read 1033 times)

steverat

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Thick flange barrels for A7
« on: 24.07. 2011 18:19 »
Good evening all.
I am considering the purchase of a mid-fifties A7 which has thin flange barrels.
I have owned several A10s and always understood the thick flange to be a safer option.
Was the thick flange ever fitted to A7?

Regards
Steve


Offline MG

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Re: Thick flange barrels for A7
« Reply #1 on: 24.07. 2011 18:26 »
Hi Steve!
The A7 never had thick flange barrels fitted. There is much more material left in the spigots, around the flange area, because of the smaller bore diameter, hence it wasn't necessary.
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

www.histo-tech.at - Restoration, Repairs, Racing

Austria

steverat

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Re: Thick flange barrels for A7
« Reply #2 on: 24.07. 2011 19:42 »
Thanks MG, good to know!
Now I know why my search for 'thick flange A7' on Ebay was a bit fruitless......

Offline MG

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Re: Thick flange barrels for A7
« Reply #3 on: 24.07. 2011 20:20 »
If you ever find one, then you should buy it right away, because most likely it came off a Daytona Shooting Star competition bike.  *ex* *smile*
They seem to have had special castings for those, 3/4 years before the A10 thick flange barrels were made. Note the very substantial flange (must be more than 1/2"), and 6 smaller fins, instead of 7 on the normal A7. Maybe they modified a mould for plunger barrels.  ???? ???? ????

Useless info of the day  ;)
 
Cheers, Markus
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

www.histo-tech.at - Restoration, Repairs, Racing

Austria

Online muskrat

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Re: Thick flange barrels for A7
« Reply #4 on: 25.07. 2011 01:04 »
Your a wealth of knowledge MG. I wish I had those barrels when racing the SS, the thin flange gave way 3 times for me.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline A10Boy

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Re: Thick flange barrels for A7
« Reply #5 on: 28.07. 2011 09:27 »
Musky, you should have tried through bolting.....................  *smile*
Regards

Andy

1960 A10 - Black Golden Flash
Plus
1974 Kawasaki Z1a
Yam XJR 1300

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Re: Thick flange barrels for A7
« Reply #6 on: 28.07. 2011 10:16 »
Still do, even thick flange.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7