Author Topic: Conrods  (Read 1712 times)

Offline Hubie

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Conrods
« on: 18.12. 2010 06:29 »
Hello Chaps,

Can anybody tell me if A7 conrods and A10 conrods are the same?

Cheers,
Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline Goldy

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Re: Conrods
« Reply #1 on: 18.12. 2010 11:18 »
No, the centres are different. A10 is 6.468" - dont know about A7.
56 A10 Golden Flash - Restore, ride, relive.                                          
56 C12 BSA project ongoing

Offline Hubie

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Re: Conrods
« Reply #2 on: 18.12. 2010 21:54 »
Thanks Goldy,

Answers the question as to whether I go for a small oro large journal crank.

Cheers,
Dave
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Online trevinoz

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Re: Conrods
« Reply #3 on: 19.12. 2010 00:13 »
Dave,
            If you go for a LJ crank, you will need rods with it. If you get a SJ crank, your rods should be OK.
Trev.

Online olev

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Re: Conrods
« Reply #4 on: 19.12. 2010 03:28 »
Dave,
I've just measured my a7 rods.
They are very close to 6.0" centre to centre. (152 or 153 mm)
cheers

Offline Hubie

  • Dave Huybens
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Re: Conrods
« Reply #5 on: 19.12. 2010 05:41 »
Thanks Olev,

I just need to confirm the same measurement for an a10 rod now!
Wanna buy a rebuilt A7 crank?

Cheers,
Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Online Brian

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Re: Conrods
« Reply #6 on: 19.12. 2010 05:58 »
A7 rods are about 1/2" shorter than A10 ones so you cant use them.

I wouldnt worry about rods just yet Hubie, get a crank first. I take it the bike in question is the one in your attached picture in which case you need a big journal crank. You can of course use a small journal crank but your bike should have a large journal and they are better. Once you have a crank then source rods. I have seen cranks on evil bay but the problem as always is postage.

There is a bloke in Adelaide who may be able to help, it is worth a phone call at least. Go to the link I have added and scroll down to Murray's Britbikes. Give him a call, you never know.

 

http://www.choppersaustralia.com/services.html#Murrays_BRITBIKES

Offline LJ.

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Re: Conrods
« Reply #7 on: 19.12. 2010 09:15 »
While looking for a Large Journal crank... It's also advisable to have measurements to determine how many grinds the crank has left. You dont want to buy one on it's final grind then have to spend £ & $ on getting it built up back to specs.
Ride Safely Lads! LJ.
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1940 BSA M20 500cc Girder/Rigid- (SOLD)
1947 BSA M21 600cc Girder/Rigid-Green
1949 BSA A7   500cc Girder/Plunger Star Twin-(SOLD)
1953 BSA B33  500cc Teles/Plunger-Maroon
1961 BSA A10  650cc Golden Flash-Blue
1961 BSA A10  650cc Golden Flash-Red

Offline Hubie

  • Dave Huybens
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Re: Conrods
« Reply #8 on: 19.12. 2010 09:44 »
Thanks LJ

I have a couple of people looking for me as well as Terry from Townsville who has a couple of cranks as well.  I will be checking measurements before committing so that there is room to go.

Cheers,
Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Online olev

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Re: Conrods
« Reply #9 on: 19.12. 2010 23:58 »
Dave,
I might be interested in an a7 crank.
What have you got and what do you want for it?
pm me, cheers