How many Hp does 49cc equal ?

[flaggggg]

l've got an 18 yr old strikemaster that runs like a bear and have not been able to get a straight answer as to comparative horsepower.l'm probably going to upgrade to a lazer mag but if l could recon the old one with a new shaft and twin blade it would be great for my kid.Any input would be greatly appreciated......

[dogfish]

Flagg
I too have/had a (15yr old) 49 cc mag strikemaster that ran great.  It was an 8 in.  I decided I wanted a 10 in so I bought a 10 inch shaft and installed.  Totally fried the thing out!  From what I have read the 49 converts to a 2hp.  Keep the shaft to 8 in on the old one and just put a new blade on it.
Dogfish

[PTC]

You can't convert displacement to horsepower. Horsepower on a rotating shaft is calculated by multiplying pounds of force x distance in feed per minute, then dividing by 33,000.

For your senario you'd need to measure the force in ft pounds 1 foot from shaft center. Then calculate distance traveled. (1 foot from shaft = 2 foot diameter) 2 foot diameter X 3.1416 = 6.2832 feet traveled per revolution of the shaft. So you'd multiply the force by 6.2832 x the RPM and divide by 33,000.

However.... Tecumseh does make a 49cc 2hp engine....  

[pot-belly-perch]

ok go to http://www.wildman.com
 & then go to the  whole site & see cayuga lake  website  about  the funny looking devise   then it will take you to a conversion site   of a to z   one i know  it does temps.
 Hope I helped you
  8)

[emptyhanded]

I agree -- 2hp equals 49 cc for Tecumseh

[flaggggg]

Thanks guys l had two wacko's up the road here tellin me it was over 3 hp only l wasn't buyin.l just didn't know if it was worth investing money into an old machine for a new shaft with dual blades or stay with what's on there.........

[Plug-N-Play]

I went to the Jiffy site and their 49cc tech was a 2hp....The 3hp was 85cc.  Unless yours is in real bad shape, I'd repair it before forking over the big $$$'s for a new one.

[fishmann]

I, too, agree with the 2HP train of thought. However, take note that I also have a 22 cc 2 cycle engine in my R/C boat, and it puts out nearly 4 hp. Of course, it has been severly modified, ported, polished, high compression, etc, has a tuned exhaust pipe like a motorcycle, runs 18-20,000 rpm and cost more than a couple new augers combined! I've often wondered how it would work if I could adapt it to an auger gearcase!!  

[MUSKY 2004]