Taking the dust off of a 80cc
 

I finally got an engine (from a pumping device)! This are the specs:

Manufacturer: "Campeón" (it means "Champion")
Model: 0-80 (79.78cc)
Carb: Campeón - Zenith (21mm of intake diameter)
RPM: 2500 (I assume they are measured at full throttle, with the pump bolted and working).
HP: no idea, the label was scratched.
Muffler: is almost dead, I'll try to make a tuned pipe and at the same time gather some experience with my welding machine.

After working the engine out of the device, and giving it a quick wipe, I found it was in good shape and ready to roar again. However there are some things I'm worried about...
-How much weight should I expect for it (the engine is made out of aluminium, except the engine block which is steel)? Or maybe what power-to-weight ratio?
-What oil works best? What is the oil/fuel mixture?
- The crankshaft potrudes out of both sides, should I cut one? Should I use the same flywheel (it's pretty heavy though)?
- In order to make useful for a plane, is there anything I should do above from machining a prop holder? Any tip/design that you would reccomend?
- In case the original spark system is dead, what can I do?
- Any other tips?
Thanks again for your help!!
I really want to make this big boy growl again![&:]

RE: Taking the dust off of a 80cc
 

Ok I found a thread about ignition, problem solved - I think.
I will also try to put ball bearings on it, but in case I didn't, will the engine fail soon?
What plane could such an engine move?
Thanx and sorry for my poor memory.

RE: Taking the dust off of a 80cc
 

Hi.
Is this a 4 stroke engine or a 2 stroke?
Sounds like the cylinder barrel is made of cast iron (heavy!).
2500 revs seems very low, and suggests low power.
All this combined with a heavy flywheel makes for a very poor power to weight ratio.
Unless you are a very good machinist, I would say that converting to ball bearings would be beyond most people. does it have needle rollers? - Sorry to make things sound so bad, but it sounds to me to be a difficult project.
I think that in Spain it should be possible to obtain a relatively cheap chainsaw engine. but 80ccs would need a very large aircraft. ( probably 1/3 scale size).
Having said this, nothing is impossible, however don't take on too much.

There is a thread somewhere in in this engine conversion forum called "is there hope? can this engine be converted" ( approx #54) which might answer most of your questions)
Good luck.