Main Motorcycle: Triumph TR7
Join Date: Feb 2012
Location: Norwich, England
Other Motorcycle: T140
Extra Motorcycle: Most of another T140
|Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.|
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Talking about american gallons, what does a US T140 tank actually hold, in imperial gallons? I've read everythig between 2 and 2.5 gallons. It makes quite a difference when touring, eg: 100 miles safe range or 125 miles, and that extra 25 miles can mean a great deal sometimes.
BTW, I used to get around 50mpg out of my '76 T140 when it was bog standard and slow, and over 60mpg after removing the silencers, fitting 32mm carbs and blending-in the inlet stubs, removing the air filters (NOT that I'm recommending the latter these days - rebores every 10,000 miles? No thanks!) and increasing the main jet sizes from 190 to 260. It might have been capable of drinking a lot more fuel but the improved efficiency measnt I had to use a lot less throttle to go the same speeds. God knows why Triumph didn't seem to realise this! And if people say it was all due to ever tightening emmissions and noise laws, how did Ducati get away with it?
Gator: I ride in mostly 4th and 5th gear in light traffic with few stops and most rides are over 60 miles. I really do believe that my VM34 Mikuni (single) improves mileage by 10% or so. It took a lot of carburetion runs, but the 5 needle notches over the 3 on an Amal improve performance in everyday riding. I haven't touch the settings in 7 years. Amal has improved throttle slide wear on their new carbs and I have one on my latest '73 TR7. I have a 105 needle jet on it but it's too cold (10*F) to ride. I'm curious how the knobbies do on snow. I also think modern tires roll easier. It's too bad they suck off-pavement. I replaced my points because they were shot. The springs were old and the screw slots were trash and their threads were stripped. I got Tri-Spark because of the advance curve and don't trust worn springs and weights. I feel that I need rock steady timing to deal with todays gas. All the discussion of points vs EI is about reliability of the ignition. I want reliability for the entire engine. With the Mikuni, I run 5 miles with the richener on (downhill in any direction from my house) and believe it helps to not run lean. The TR6 doesn't like it anyway and spits at me. You know what the Bonne is telling you when you ride it. I get very similar gas mileage to Ed's 74 850 Commando with a single Mikuni. Happy New Year. Bob
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