The 'best' MPG...

[IamCornholio]

im averaging 39.41 mpg on a heavily modified FJ1200


running 50/50 mix of Mobile 98, BP 105 leaded race gas and 1/2 litre of Acetone

13.5:1 comp, cammed, big bore kit and a stroker crank with stage 2 heads and ignition upgrades

and thats just my commuter .

Wicked ride friend! Curious, Is the Acetone to help prevent detonation?

The bike in my pic above runs a 2 piece headkit with a true 'corrected' compression ratio of 15:1... May be because it is a 2stroke (not sure) but so far I have had no issues running on the high grade pump gas (synthetic oil added of course).

Our bike is tiny so I measure fuel in Fluid Ounces...

The U.S. fluid ounce is defined to be 1/128 of a U.S. gallon or 1/16 of a U.S. pint, exactly 1.8046875 cubic inches or 29.5735295625 milliliters.

I have owned larger bikes in the past and it always amazes me just how much fun a guy can have for cheap when motorbiking.

$3.00 will buy us an afternoon of serious fun with our 'little' bike easily.

[Edbear]

3.78 ltrs = US Gallon

4.54 ltrs = Imperial Gallon

So I guess you are both right

4.54609 if one wants to be more pedantic...

I get about 60mpg easy cruising. My old T500 would vary depending on how I rode it from 33mpg at 100mph, to a best of 80! That was in heavy rain at around 50mph using hot plugs, (Champion L82Y), and barely touching the throttle from Warkworth to Dargaville in 1976!

[SARGE]

Wicked ride friend! Curious, Is the Acetone to help prevent detonation?

The bike in my pic above runs a 2 piece headkit with a true 'corrected' compression ratio of 15:1... May be because it is a 2stroke (not sure) but so far I have had no issues running on the high grade pump gas (synthetic oil added of course).

Our bike is tiny so I measure fuel in Fluid Ounces...

The U.S. fluid ounce is defined to be 1/128 of a U.S. gallon or 1/16 of a U.S. pint, exactly 1.8046875 cubic inches or 29.5735295625 milliliters.

I have owned larger bikes in the past and it always amazes me just how much fun a guy can have for cheap when motorbiking.

$3.00 will buy us an afternoon of serious fun with our 'little' bike easily.

the acetone turns the slow burn race gas into a fast burn.. no detonation at all while running ther 105 + 98.. just ups the flame front

[Deviant Esq]

My bike will return around 30km per litre, which works out to 113.4 miles per US gallon. I'm glad it's that economical, the fuel tank isn't very large!

[IamCornholio]

My bike will return around 30km per litre, which works out to 113.4 miles per US gallon. I'm glad it's that economical, the fuel tank isn't very large!

I know you don't really NEED the points but you still beat me here so +rep for you bro!

You gotta let me see a pic of your ride friend. That is just awesome!



(Thanks for the 'schooling' there SARGE, I appreciate you for sure)

[xwhatsit]

I know you don't really NEED the points but you still beat me here so +rep for you bro!

You gotta let me see a pic of your ride friend. That is just awesome!



(Thanks for the 'schooling' there SARGE, I appreciate you for sure)

Haha 250 single cylinder four-strokes don't suck much gas. Mine eats more than Deviant's, possibly due to commuting in Auckland traffic and an overadvanced ignition, but it's still reasonable. 80-90MPG is usual.

So I'm assuming yours is a 50cc two-stroke? I didn't realise that that would be comparable with a 250 thumper, although you did say it was in a pretty high state of tune

You're right, motorbiking is a very cheap way of having fun, especially when it's also combined with your everyday transport. My bike, despite all the money I have to fork out for it, is still cheaper than catching the bus here, and also keeps me amused for whole-day rides, 400kms, and less than $NZ20 (with petrol to spare for the next few commutes).

[IamCornholio]

Yup. 50cc 2stroke for us friend.

Awesome that you beat our mileage Deviant Esq.

Very cool site you have here BTW.

[Deviant Esq]

You gotta let me see a pic of your ride friend. That is just awesome!

Click on my avatar (the little pic next to my user name above my post) to go to my profile - there a pic of it in there. Cheers mate

[pete376403]

They are hard to find (unless you know the right people or get one as a company vehicle) but the US Marine Corps diesel KLR650s are reportedly returning around 110mpg @80MPH, Running on either diesel or JetA1
http://www.hdtusa.com/models.htm
I could live with one...
Correct fuel milege given here
http://www.hdtusa.com/military.htm
Its tested at 96MPG at 55 MPH

I could still live with that

[IamCornholio]

Click on my avatar (the little pic next to my user name above my post) to go to my profile - there a pic of it in there. Cheers mate

Your bike was very cool for sure friend but the background was simply amazing.

You are a very lucky man indeed.

Thanks Deviant Esq...

[Deviant Esq]

Your bike was very cool for sure friend but the background was simply amazing.

You are a very lucky man indeed.

I took that photo about a month or so ago - I'm standing in a rest area / car park (it's access for a hill walk / trail) off the Summit Road on the Port Hills, Christchurch NZ, looking East out towards the mouth of Lyttleton Harbour (Lyttleton Port and town on the left, Diamond Harbour on the right). Banks Peninsula carries on out to the right of the picture. It was a warm sunny autumn (fall) day. Sure is a nice view, cheers

[IamCornholio]

I'ts hard to find the right word for that photo friend...

'Wow' comes to mind first for me.

It's gotta be hard to ride out there without crashing from watching things 'other' than the road. Once again, You are a lucky man Deviant Esq.

Thanks for pointing me to your profile picture friend.