Frame dimensions 18S

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Frame dimensions 18S

Postby Antoni » Sat Jul 06, 2019 7:10 am

Could any kind soul measure the distance from the centre of one of the forward engine mount bolts to the centre of the front wheel spindle with the bike on the centre-stand?

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Re: Frame dimensions 18S

Postby Halfwhelk » Sat Jul 06, 2019 3:18 pm

1955 18CS
From centre of upper forward engine bolt (big cast lug on frame downtube) to centre of wheel spndle 544mm.
Note bike was on axle stands so there was some weight on the front wheel.
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Re: Frame dimensions 18S

Postby Antoni » Sun Jul 07, 2019 7:19 am

Thanks for that. I assume it would be the same for a non-competition bike

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Re: Frame dimensions 18S

Postby cfaber » Sun Jul 07, 2019 3:19 pm

Antoni wrote:Thanks for that. I assume it would be the same for a non-competition bike


My 54 18s measures 21.75" or so, that's from a crude measurement between the center of the axle and upper forward engine stud on the bottom part of the magnito platform

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Re: Frame dimensions 18S

Postby spookefoote1956 » Sun Jul 07, 2019 4:57 pm

:? I'm fascinated as to why you want to know?
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