Chainsaw motors

[madmaxthemic]

Has anyone here seen any good chainsaw engine minibikes. I know some chainsaws are well over 100cc and producing 8-10 hp and can run up to 10,000-14,000 rpms. Just a thought.

 

[Motra]

They don't have much torque, you'd have to run it at 10,000 RPM all the time. Here's a video of a drag bike powered by 24 chainsaw engines.

YouTube - Chainsaw Bike

 

[125ccCrazy]

some of the old race karts had Mac 90 and mac 110 on them.... something like this eBay Motors: Vintage McCulloch kart MAC 90 engine (item 380095420918 end time Jan-14-09 18:11:36 PST)

and this... trick is finding a clutch now and making an engine mount.. eBay Motors: Vintage Mcculloch MC91 Go Kart Racing Engine Rebuilt (item 370142561064 end time Jan-19-09 17:28:09 PST)

 

[Zach]

They never show it drive though. I see power be relayed to the belt. Is there another link of it driving?

 

[~JM~]

Has anyone here seen any good chainsaw engine minibikes. I know some chainsaws are well over 100cc and producing 8-10 hp and can run up to 10,000-14,000 rpms. Just a thought.

I'm interested in this subject. If you find anything... please let me know.

Thanks
~JM~

 

[Sinner70]

same here. I am close to starting a project with an old Homelite. Let me know, thanks.

 

[~JM~]

same here. I am close to starting a project with an old Homelite. Let me know, thanks.

What kind of Homelite engine are you using?

I have a couple of older Homelites that I'm having a tough time trying to properly I.D. They are both a bit over 100cc. From what I've read, they should produce power lower in the RPM band than most 2-strokes.

 

[Sinner70]

What kind of Homelite engine are you using?

I have a couple of older Homelites that I'm having a tough time trying to properly I.D. They are both a bit over 100cc. From what I've read, they should produce power lower in the RPM band than most 2-strokes.

not sure. Its my dads old saw he gave me when he bought a new one. I'll have to check and get back to you.

 

[drheilman]

heres how MCBOB did it with a mac 15 http://macbobaust.com/McCulloch_mc15_cranktrick.html

 

[mcbob]

There's a heap of the older Mac's that use the stepped PTO crank besides the Mac 15.
Check my Mac Kart engine site for more details.
McCulloch Kart engines.

Mc Bob.

 

[jeep2003]

i welded a bycycle sprocket on the stock clutch of a homelite. trouble was making the mount i ended up making it bolt to there the bar atatched and made some holes in the handle. i mounted it on a scooter. reved it up and almost killed myself when it threw the chain. then i welded a bicycle trick peg to the clutch to try a scrub setup but that didnt really work either. i guess if it had the right gearing and good mount it would work but probrobly not great. maby on a lil petro or tom thumb. just dont expect to go fast

 

[fordman50]

not worth it....

 

[Sinner70]

not worth it....

It depends on what you are trying to accomplish. If you think you are going to be putting one on a mini and go fast, prob not worth it. But if you are putting one on a Kids Powerwheels type vehicle, you might have a chance......

 

[Oldsalt]

There are some common chain saw motors out there that are rather powerful. It's just a lot more trouble to mount one and get a drive system to work. As the motor lays down and not upright like a 4-stroke they lend themselves to such mini bikes as a Tom Thumb or Caper Cycle. A Mac kart motor is a spin off of their chain saw motor. Don't figger on raceing a mini with one if you are useing a Briggs or Tec.

 

[Caddy Kid]

We have an old Homelight C-7 at work that we got running the other night. Just needed a new set of points, which somehow we had in stock from who knows how long ago. Fires up first pull, but the handle was broken off of it years ago. Been trying to find some info on specs for it, but no luck yet. If anyone knows where to find this info, it would be greatly appreciated.

We are thinking of putting it on a lightweight kart frame (especially if we could find its twin somewhere), as a mini-bike would probably not be what its best suited for. Trouble is, we can't seem to find a sprocket and clutch for it. Some people just weld on a sprocket, which we may end up doing if we go forward with it.

 

[DSLDAW]

not sure. Its my dads old saw he gave me when he bought a new one. I'll have to check and get back to you.

They can be made,to really go fast on a bicycle with a scrubber. Had a
2cycle similar to that size,that did run 40mph,on a 20" bike. Screamed
like a SOB,though.I'm half deaf,cause of it.

 

[~JM~]

We have an old Homelight C-7 at work that we got running the other night....
...Been trying to find some info on specs for it, but no luck yet. If anyone knows where to find this info....

Might be able to dig up something here.
Chain Saw Collectors Corner - Gasoline Chain Saws by Manufacturer

The engine I have pictured in this thread is a Homelite from the 50's or so. I would really like to go through it & then build a bike around it.

The blower shroud most closely resembles one of these.

Model Profile: 20MCS

Model Profile: 26LCS

 

[Sinner70]

Might be able to dig up something here.
Chain Saw Collectors Corner - Gasoline Chain Saws by Manufacturer

The engine I have pictured in this thread is a Homelite from the 50's or so. I would really like to go through it & then build a bike around it.

The blower shroud most closely resembles one of these.

Model Profile: 20MCS

Model Profile: 26LCS

great link. thanks. I should be able to start tinkering with the SAW build. I'll post when i have somthing.

 

[Caddy Kid]

Awesome chainsaw info link. Thanks!

 

[jeep2003]

lots of chainsaw motors used here
Tzi's ScooterWorld