Ok what are you getting for mileage with your commando.

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CanukNortonNut

CanukNortonNut

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I did some conversion calculations. During my full to top refills on my interstate , I made a trip mostly with camp gear on the back. (Two saddle bags and a top tail bag in plus tent and waterproof bags behind me). I did 768 clocked miles from fill up to fill up using 11.88 imperial gallons or 14.27 US gallons. That works out to 64.6 imp or 53.8 US miles per gallon. My rig is slightly modded. Maney belt drive, 21 tooth gearbox final, cam is meggacycle 560 N-R and twin Amal mk1's resleeved by chessell. My best mileage was 71.9 imp all on secondary roads 45-60 mph speeds. Shell V-Power no ethanol.
What do you get with your ride. Most of my travels were 700- 800 ft above sea level.
Cheers
Tom.
 
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I use the the Fill Up app on my phone to track the odometer between fill ups and it also calculates the gas mileage. I fill around 100 miles or so. Not sure if it uses Imperial or U.S. gal as it converts from liters but think its U.S. gal. Anyway this year it has ranged 42 to 62 mpg. I don't fill to the top as it leaks out the cap if its too full (despite replacing seal) so that adds some variability. Roadster with 21 tooth sprocket and twin Amals. Shell V Power most of the time although have used Esso and CTC premium. I understand their premium is also no ethanol in Southern Ontario. There is a Pioneer Station in Fort Erie that apparently has no ethanol in all its grades. Lots of 60's and early 70's muscle cars fueling there.
 
I don't know why so many are so in frill with how many MPG they get out of their bikes, it also how hard you ride them or how slow you ride, my main concern is how many miles I get out of my motor before a rebuild, I don't worry about my fuel mileage, if the bike is tuned right and running great then who cares about the MPG and off course everyone will have differents in how far they go on a tank before fill ups.
43 years of ownership and have well over 160k miles on it and my motor is only on its first reboar, still running with orginal valves and my motor has been pulled down only 3 times, the last time 7 years ago to replace crank cases from fractures around the main oil seal on the drive side and my bike was a everyday ride most of its life, but I now have a few bikes in my collection so the Norton is now semi retired just like its owner.

Ashley
 
ashman said:
I don't know why so many are so in frill with how many MPG they get out of their bikes, it also how hard you ride them or how slow you ride, my main concern is how many miles I get out of my motor before a rebuild, I don't worry about my fuel mileage, if the bike is tuned right and running great then who cares about the MPG and off course everyone will have differents in how far they go on a tank before fill ups.
43 years of ownership and have well over 160k miles on it and my motor is only on its first reboar, still running with orginal valves and my motor has been pulled down only 3 times, the last time 7 years ago to replace crank cases from fractures around the main oil seal on the drive side and my bike was a everyday ride most of its life, but I now have a few bikes in my collection so the Norton is now semi retired just like its owner.

Ashley
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Ashley,
I don't give a crap if on how many K or how long you own your bike on you first re-bore. Just tell us what carb or carbs you use at those speeds with whatever mix of gas you use. No bragging rights here. Just what you get when you are traveling for distance. If someone uses the cNw carbs or a fuel injection system or those Chinese pkw's set up for a Commando. That would be good to know. Or twin mikuni's single or twin mk2's. This is where I want the discussion to explore. Not your semi retired state.
Cheers,
Tom
 
Its not the speeds I do its the miles I have on my motor that I was talking about, long liverity of my motor, but my motor is not stock and when I converted it to the Featherbed frame back in the early 80s it has ran a hot cam and head work as well balanced crank, I got about 40k miles on my orginal Amals and replaced with new ones and replaced them just over 7 years ago with Jim's PWKs I have never been into how many MPG I get but cruising around it does OK but of course will use more fuel when riding it hard as I do most of the time, I get about 120 miles before going on reserve.
But of course I am running a Wideline tank and not a Commando tank, as well stock speedos aren't accurte when they are over 43 years old.

Ashley
 
Almost exactly 50 mpg from my 750 running twin 32mm mk 1 concentrics ,pea shooters and a k&n and I'm often above 5000 rpm
But the bike is now a toy
I used to have an 850 mk2a that I fitted with a single 32mm concentric
Used to get 65 mpg , this really helped me out when I was skint
 
My original, 1971 Commando Roadster/19tooth rear sprocket never did better than mid-30's MPG. But I was perfectly happy with that. Admittedly, I rode the heck out of it and almost never failed to take it to 7k in any gear as rapidly as possible where space/traffic allowed it. ;)

I've never paid any attention to my current 850's MPG. I'm ready for a fuel stop before it will run out so it doesn't matter to me. On the 71 roadster, that wasn't the case - 90 miles was about it for range the way I rode it.
 
MexicoMike said:
My original, 1971 Commando Roadster/19tooth rear sprocket never did better than mid-30's MPG. But I was perfectly happy with that. Admittedly, I rode the heck out of it and almost never failed to take it to 7k in any gear as rapidly as possible where space/traffic allowed it. ;)

I've never paid any attention to my current 850's MPG. I'm ready for a fuel stop before it will run out so it doesn't matter to me. On the 71 roadster, that wasn't the case - 90 miles was about it for range the way I rode it.
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19 tooth rear sprocket !!! bloody hell, that must have been geared for 300mph :D
 
30-50mpg

All depends on the assignment. Parade speeds with slow bikes...
Or spirited rides...

If you want thoses horses to RUN, you gotta feed ‘em
 
Perhaps about 35 with some town driving, but I never really monitor nor is the cruising speed consistent enough for serious accuracy...Have to let the dog out occasionally also.

As an afternote I'll add: Carbs are original from '74 & work good. If the dog isn't turned loose(with my puttering) plugs will begin to blacken & MPG becomes hideous.
 
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and i would guess black plugs and no choke. my riding is a mix of 40 -50 mph cruising.and spirited all on mountain roads. once again poor fuel mileage is an indication of poor carburetor setup.

jbruney said:
Perhaps about 35 with some town driving, but I never really monitor nor is the cruising speed consistent enough for serious accuracy...Have to let the dog out occasionally also.
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53-55 US mpg, 20 tooth sprocket and 32mm Amals. I recall getting 60 mpg on the highway when the bike was new. I think the crossover exhaust headers actually contributed to that.
 
Ok, so mine is a baby 650ss and average of 55 mpg, 20T sprocket. The old monoblock carbs were better on fuel, but changed to concentrics over 30 years ago, as the slave carb always ran lean. You big boys have cheap fuel i believe.
 
73 850 with Amals , 40 to 45 on the average. I try to arrange fuel stops around 100 miles with the roadster tank.
 
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