G11 / G80 Frame trouble.

Information relating to the Matchless G11 or AJS Model 30 600cc twin
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G11 / G80 Frame trouble.

Postby Matt Durkin » Mon Dec 11, 2017 10:46 am

Hello Guys,
Im just peeking around the door into your G11 room to ask a potentially ridiculous question with a bit of a long winded genuine story behind it.....

.... :roll: Here goes...... I have a nightmare on-going 'bitsa' project taken over from my late father, It turns out that we seem to have a G11 Framed G80 and subsequently need a G80 Frame to get the V5.

Where the heck do I start?

Anyone got the opposite problem that we could fix?? :?: :lol: :lol:

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Re: G11 / G80 Frame trouble.

Postby SPRIDDLER » Mon Dec 11, 2017 11:38 am

Matt Durkin wrote:....... we seem to have a G11 Framed G80 and subsequently need a G80 Frame to get the V5.

Where the heck do I start?


Place an ad on here and in the Jampot?
Try Steve Surbey at AMC Classic Spares
Browse eBay, Old Bike Mart, or an autojumble.
Ride a G11 framed G80...........
I poke badgers with spoons.

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Re: G11 / G80 Frame trouble.

Postby Andy51 » Mon Dec 11, 2017 2:10 pm

If there is no practical difference between the frames, why bother changing? My '54 G80S started life as a G3 but is fully registered by DVLC as a G80 so presumably no problem re-registering your G11/G80 as the latter. Andy

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Re: G11 / G80 Frame trouble.

Postby alanengineer » Mon Dec 11, 2017 2:30 pm

A G11frame or any twin frame will have an extra bracket on the front down tube for the head steady. Year for year , that is the only difference.
Have you got the frame properly dated for the Dvla by the club or are you guessing.

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Re: G11 / G80 Frame trouble.

Postby G15 Roy » Mon Dec 11, 2017 2:34 pm

No he is not guessing.
Roy

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Re: G11 / G80 Frame trouble.

Postby Reynard24 » Mon Dec 11, 2017 4:30 pm

Forgive my ignorance but I know the frame no. details the make but is the model assignation always kept with the frame and therefore on the V5C?

If so has it always been thus as I know of a bike with a 1958 frame, originally a G11 which now houses a much later AJS M31 engine which has a Matchless G12 designation on the V5C or could this have been done in the days when the DVLA were less diligent?

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Re: G11 / G80 Frame trouble.

Postby G15 Roy » Mon Dec 11, 2017 5:03 pm

or could this have been done in the days when the DVLA were less diligent.

Yes this was caused by some dating officers ( Not Club ones ) that just used the engine number to date a frame if they were unsure. :o
Roy

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Re: G11 / G80 Frame trouble.

Postby Rob Harknett » Mon Dec 11, 2017 10:07 pm

It would have been quite in order to change the engine years ago, declaring the change and the logbook altered showing the new engine fitted.

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