Great Spring day

[Mag1]

Nice, weather looks quite good for us up north, rain for Friday. Sat and sun look good also a warm 8 deg. As long as it's dry then great.

[MrDavo]

Yesterday I was out on the CB750, went over the Snake Pass, up to Ladybower resevoir and back, and then over Holme Moss before coming back via Saddleworth Moor and Dovestones. It was going very smoothly after its recent carb synch, and sounded great, definitively bringing a grin to my face. I caught up with a couple of modern sports bikes on the A57, but decided against passing them as things may have easily got very silly very quickly.

Because the ride became longer than anticipated and also because the bike doesn't seem to be doing a lot to the gallon (I'm used to 50mpg on the Harley) I almost ran out of petrol! At least it explained the sudden heavy misfire going over the moors, which went as soon as I tried reserve, it was missing again by the time I finally got to a petrol station, there was only a drop sloshing about in the bottom of the tank. This time I reset the trip meter, I need to learn what the range is. Online mpg figures are useless, as the rest of the world doesn't use real Imperial gallons. Does anyone here with an early K series know what they get to a tank? - the older they are the faster they go but the less mpg you get, apparently. I have seen 30 (ish) mpg quoted for K0s but that's 'Murican gallons which are a bit smaller, I think.

Later I took the Harley out for a quick spin to warm the oil as it was due a change, after the Honda it felt like a huge low armchair, and made the CB750 seem quite nimble in comparison. It felt odd to pull away at almost zero revs, I'd realised that the Honda's low speed misfire was me trying to ride it the same way, there is a bit of a 'hole' in the carburation around 2000 rpm, but you're not supposed to be riding it like a big twin in the first place!

[Mag1]

What mileage are you getting to a tank over 100 miles?, sounds like a great day. Stuck in office all day, seen a few out and about on bikes on the way home.

[MrDavo]

What mileage are you getting to a tank over 100 miles?

I honestly don't know, I'd hope so but that's why I'm asking. That's also why I've set the trip mileage - I need to find out before I run out properly.

[steff750]

Does anyone here with an early K series know what they get to a tank?

i always get over 50 mpg from my 1970 cb750 k0's i get 115 miles before i hit reserve,i fill up as soon as posible, and try not to run far on reserve not to pull any crap through from the bottom of the tank.
filled the bike up twice sunday cracking weather and did well over 150 miles

[flatfour]

May not help much, but my US Spec K2 delivered 54 mpg over 137 miles of mixed "A" and "B" road use on Saturday last.

[philward]

My UK spec K2 gets about 115 - 120 miles before reserve kicks in on mixed riding

[MrDavo]

i always get over 50 mpg from my 1970 cb750 k0's i get 115 miles before i hit reserve

The 115 miles is useful info, and 2 of you gave the same figure. I may get more mpg if I ride gently, but I don't (however I am keeping below 5,000 rpm when possible until I've more miles on the engine).

I'd take issue that that means 50mpg though, Steff, if (according to Wiki) it's a 4.2 (Imperial) gallon tank, with a 0.9 gall reserve, thats 3.3 gallons for 115 miles, that's about 35mpg. Maybe you're using Welsh gallons. I don't fill mine all the way to the top, despite a new cap seal, some fuel still leaks out if I do.

Better than the Harley, despite it doing 50mpg it has the cooler, but stupidly small, peanut tank, that I believe the factory originally borrowed from a 125 for it's track bikes in the 50's. I start to look for fuel at around 85 miles, it grinds to a halt at 105. That made riding round the North coast of Scotland a barrel of laughs last summer, but I did luckily blag a list of garages off a scooterist coming the other way.

[Mag1]

Most remote filling spots now have 24 hr self service in the highlands, always best to ask locals before heading up north if staying in camps sites, they will always inform you of next stops to fill at. Apple cross and Durness is one major filling stop on your list, Durness is also a beautiful spot to camp at with views over the North Sea and beach. Will be doing that again this summer.