what ive decided on for my simple commuter....

[endlos]

7 hp 350cc hatz 1b30, new

cvt tranny, not sure what kind, everyone says go with comet, but if there is a reason i SHOULDNT go with cvt and get something that shifts, please tell me

and use one of these as a base, as LEAST frame wise



its a derbi, i figure i will get something around 250-300 lbs on road with the 1b30, and im only 150 lbs, so it should be fine for 50-60 mph, and get me roughly 150-175 mpg.....

what do you guys think?

[Andi]

Take a look at the following link. They used a YANMAR L100AE, which is rated at 9 hp continuous at 3600 rpm and a Comet CVT, which seems to be a good match for a Diesel engine. They are getting a top speed of about 40 mph as far as I've read, but that could have to do with gear ratio and proper tuning of the CVT. 9 hp gets you about 50 to 55 cruising and 60 max on average.

http://www.mecheng.adelaide.edu.au/biobike/

[Rick]

You'll never see 55-60 with a 7 hp engine. I built a little bobber last year with a 6hp in it. Very lightweight, in a rigid frame, best I've EVER got out of it was just under 40 mph.
Also, you're going to have to do a MAJOR rework on that frame to fit a diesel in there.

[endlos]

shucks, i guess ill have to go 10hp, its just that the 1b30s are so cheap. i wasnt planning on putting INSIDE the frame, but just modifying it so it will bolt hold it, im not concerned with aesthetics at all.

[LocomotiveBreath]

I think the chassis you want to use is a poor choice unless you can weld aluminum. I see extencive frame mods to use this chassis. The engine is a lot bigger and your center distances between your CVT and drive pulley will be in the area of 8"-10.5".

Just my 2¢ worth,
Good luck,
Dave

[endlos]

ive got a guy whos champ at with the tig, i want to keep weight down. im still learning.

[Byrdman]

You're doing great. Trying all sort of stuff is what this forum is based on.

Let's face it, if we never tried something new, this place wouldn't exist!

[andrewaust]

Certainly will be an eye turner ! Will have the frame and suspension to virtually go anywhere, and with the reliability of the Diesel Engine.

Great job = Keep up the great work.




Cheers


Andrew

[reg hardlyrideables]

think you will find the frame is steel made to look like a alloy frame get the arc welder out:)