Hatz ES79

[IgorVigor]

Anyone had anything to do with the Hatz ES79?

There is one I have seen 7hp @ 3000rpm...

Are they a fixed speed engine?
if so can they be easily converted to throttle mechanism?

thanks

[IgorVigor]

Someone must have has SOMETHING to do with the Hatz ES79?
or the Hatz E79?

[albertaphil]

They are an old style engine produced for like 40 years, although production stopped some years ago. They are heavy for the power, and they were used a lot on vibratory rollers. My guess is that the vibration from the engine helped the roller do its job. A little small for a trike, don't you think?:-)

[IgorVigor]

But not for a motorbike

7hp

for a trike I still have my 1.8 Ford Endura Diesel

[Dan J]

Igor - seriously, I'd take nothing less than 10hp. Even that has trouble powering an Enfield up to 60mph You can pick up Yanmar clones for 200 quid brand new and if that's out of range then I'd keep an eye out for a used one or an old gen-set with a 400cc or bigger engine. If you really can't be talked out of it them maybe have a chat with Sam Brumby as he built a bike with a similar output engine and if I recall correctly it's very much a 35/40mph country lane cruiser rather than something that would keep up with traffic on the main roads...

[Stuart]

Yep, go for a bigger engine, a twin if you can. And one with a 180 crank for less vibration. Better pullin power if it's firing every stroke. Don't forget that 3600 revs (or thereabouts) equates to 68mph one to one through the gearbox.
I did 22k on my Hatz 1B30 Enfield and believe me, it's hard going riding into Europe loaded up and tackling those long slopes on the Autobahns.

Stuart

[IgorVigor]

I fully understand that really, its just I really want a diesel bike, and not having much money at the moment

patience I suppose

[IgorVigor]

Anyone know if they are a fixed speed engine?

I have been looking around for info, but there isnt much :S

Still thinking of getting it, just for a bit of fun
Would probably put it into a small dirtbike
Diesel powered dirtbike would be fun

[smokyjoe]

Ha! A Wacker vibratory roller is exactly what my E79 came out of! It would walk the steel welding table it was clamped to (for testing) all over the driveway at idle and low speed, but mine smooths right out from 2,000 to 3,000 RPM. I imagine that it would help pack down the gravel. Didn't seem to be any worse than the Harley, though:lol: I'm going to try to "soup it up" a bit once I get all the bugs out of the bike, but this project has been very slow going so far (maybe 2 years!)

As far as low power/speed I mostly drive on 40 to 45 MPH roads going to work, etc. so it doesn't much matter. The downside is that in the US we pay our insurance fees based on cc's and not horsepower! So I'd pay the same money for a 45 MPH 7 HP Hatzuki Diesel as some yahoo kid with a 150 MPH 85 HP Kamakazi 450 crotch rocket. Life jus hain't fair.