engine size

lardy1 · Post by **lardy1** » Sun Jan 17, 2010 1:49 pm

has anybody got any ideas on what is the best size single cylinder engine to use,i waz thinking of a yanmar unit,many thanks

sbrumby · Post by **sbrumby** » Sun Jan 17, 2010 7:45 pm

Sorry to go back to my pet hate, but without knowing where on the earth you live it becomes very dificult to know how to reply to some questions.

Sphere · Post by **Sphere** » Sun Jan 17, 2010 8:52 pm

How is geography relevant for this question?

Anyway, isn't the biggest Yanmar the L100 or something? If you really need to stay single cylinder Yanmar I guess go with that. 9-10hp.

Post by **Diesel Dave** » Sun Jan 17, 2010 8:57 pm

Hi Sam,

I'd say it really depends on weather it has a balance shaft or not.

Lombardini 6LD are old school and without a balance shaft and I would not go over 400cc as it's a recipe for vibration that would humble a road repair crew.

If however it has a balance shaft then the 462cc hatz or the 500 15ld Lombardini are both good and useable but I would not venture higher than this as the flywheel weight becomes massive.

Cheers
Dave

coachgeo · Post by **coachgeo** » Mon Jan 18, 2010 3:36 am

Sphere wrote:How is geography relevant for this question? ....

Sphere you've been around awhile so should we assume your being factitious

As you know geography makes a huge difference in availability of engines, such as the differences between what is available American Continents and the European Continent. Heck what is available in the Asian market in Asia is different than the Asian market sources out side of it.

Sphere · Post by **Sphere** » Mon Jan 18, 2010 8:23 am

Seems to me TS is stuck on Yanmar, so how is giving a practical answer factitious? Indeed, quite the opposite. If you read TS posts it's not rocket science to figure out he's from the UK. Now, if the TS returns this saves him an iteration. Happy to help.

lardy1 · Post by **lardy1** » Mon Jan 18, 2010 10:32 am

sbrumby wrote:Sorry to go back to my pet hate, but without knowing where on the earth you live it becomes very dificult to know how to reply to some questions.

hi matey,i live in surrey,england if that helps

lardy1 · Post by **lardy1** » Mon Jan 18, 2010 10:33 am

Sphere wrote:How is geography relevant for this question?

Anyway, isn't the biggest Yanmar the L100 or something? If you really need to stay single cylinder Yanmar I guess go with that. 9-10hp.

aye thats what i was thinking,hopefully a decent turn of speed??

Sphere · Post by **Sphere** » Mon Jan 18, 2010 10:40 am

Decent is a matter of preference. I think you will be pleasantly surprised it will go faster than the Aixam you had on loan, but don't expect sonic booms. 55-60mph depending on lots of things like weather, weight, gearing etc etc.

lardy1 · Post by **lardy1** » Mon Jan 18, 2010 6:25 pm

aye that carwas impressive,might do a bike with one of those engines later,55-60 will do does that mean 80mpg or more??.

Sphere · Post by **Sphere** » Mon Jan 18, 2010 7:19 pm

140ish mpg (Imp). Some get 150-160. All depends on what topspeed you do.

lardy1 · Post by **lardy1** » Tue Jan 19, 2010 8:27 am

mmmmmmmmm,dependson my mood at the time

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