Model 20 Miles per gallaon ? + speed

Information relating to the Matchless G9 or AJS Model 20 500cc twin
User avatar
Biscuit
Deceased
Posts: 3924
Joined: Thu Jan 01, 1998 12:00 am
Location: KENT UK

Model 20 Miles per gallaon ? + speed

Post by Biscuit »

Settings for '57 G9

Carburettor, Monobloc 376/6 (with air filter 376/34)
Mixing chamber body No. 376/002
Bore 1”
Jet block 376/056
Main jet 220 (230 with air filter)
Pilot jet 30
Throttle valve 376/4
Needle position 3
Needle jet .106

Source - Amal settings List No. 601/3 1960



User avatar
Circlip
Posts: 485
Joined: Sun Aug 05, 2007 11:12 am
Location: Thailand THAILAND

Model 20 Miles per gallaon ? + speed

Post by Circlip »

Im so pleased that Ginger came in with a sensible reply as I was just about to reply to Itmas post
itma
Posts: 7721
Joined: Tue Nov 22, 2005 6:01 pm
Location: UK

Model 20 Miles per gallaon ? + speed

Post by itma »

Don`t hold back Circlip I love a bit of onomatopoeia

Quote "...I have had my model 20 restored..."

If this is a bike someone else has restored for you and that you have paid for, I` d suggest the first place you try is the "restorer " that did the deed.
The stink of petrol behind you as you ride must be horrendous.
User avatar
Circlip
Posts: 485
Joined: Sun Aug 05, 2007 11:12 am
Location: Thailand THAILAND

Model 20 Miles per gallaon ? + speed

Post by Circlip »

Thats a very big word is that Itma. You know that omy topy thing. Its got a lot of O's in it !!!

I dont know what it is ,I hope its legal?
itma
Posts: 7721
Joined: Tue Nov 22, 2005 6:01 pm
Location: UK

Model 20 Miles per gallaon ? + speed

Post by itma »

as long as its not onansism mate you are OK
User avatar
Circlip
Posts: 485
Joined: Sun Aug 05, 2007 11:12 am
Location: Thailand THAILAND

Model 20 Miles per gallaon ? + speed

Post by Circlip »

Do you do English.
bag-o-nails
Posts: 452
Joined: Tue Apr 17, 2007 12:19 pm
Location: SURREY UK

Model 20 Miles per gallaon ? + speed

Post by bag-o-nails »

Hello martin
Did you have a chance to check the carb over the weekend we should have added the number is stamped on the manifold thats the
bit where it bolts on the engine. you could also check the brake adjustments saw a bloke
once riding with his foot down on the lever
please let us know how you get on
cheers b-o-n
beerboy
Posts: 8
Joined: Wed Dec 04, 2002 12:00 am
Location: OXFORD UK

Model 20 Miles per gallaon ? + speed

Post by beerboy »

thanks for all the advice, most appreciated. as a mechanical ignoramus it may take me a while to work my way through the all possibilities.
beerboy
Posts: 8
Joined: Wed Dec 04, 2002 12:00 am
Location: OXFORD UK

Model 20 Miles per gallaon ? + speed

Post by beerboy »

Many thanks to all who offered advice on this one. Thanks to a new carb from Surrey Cycles Freda is now up and running beautifully.

most grateful
Locked