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Author Topic: Why not one more. Snowmobile engine deadtail  (Read 10932 times)

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #20 on: Feb 02, 2016, 14:05:00 »
This is cool, man.  I'm enjoying learning about these motors.

Thanks. These little engines are almost to simple. No valves of course, but even beyond that they are engine design at its simplest form. They were kind of the German equivalent to a Briggs and Stratton. 2 stroke though. Made for reliability more so than power. Rated at 15 h.p. at 5000 rpm. Im going to do a little exhaust port work, mostly just cleaning up the rough casting as well as modify a 250cc dirtbike expansion chamber to fit. With those mods I may get up to a whopping 17 h.p. lol. My thought though is that if it will move a 350 lb. snowmobile 30 m.p.h. with all of the rolling resistance of the track, it should be able to motivate a small motorcycle up to 55mph with the right gearing. all of this is guessing only of course.
« Last Edit: Feb 02, 2016, 14:39:01 by hurco550 »
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline treitz

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Re: Why not one more. Snowmobile engine deadtail
« Reply #21 on: Feb 02, 2016, 14:25:46 »
This should be fun. Will have to follow along.

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #22 on: Feb 05, 2016, 17:50:00 »
Well, since I have to weld on the hardtail, and I'm hoping a full custom frame is in the project lineup in the future, I figured it's time to make a frame jig. Had a bunch of extra square tubing around that's straight with 7/16" holes every inch on center. It will be all bolt together and almost infinitely adjustable. I'm trying not to do a hack job so it will be able to be around for a while.





Gotta have some brackets water jet cut to make it all hold together.
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline ridesolo

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Re: Why not one more. Snowmobile engine deadtail
« Reply #23 on: Feb 05, 2016, 19:23:31 »
Haha.

I'm glad you are getting the blame for this one, usually he manages to find some way to blame me for his harebrained ideas genius schemes.   
“Fight on and fly on to the last drop of blood and the last drop of fuel, to the last beat of the heart.”
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Please check out:  http://www.VetTix.org

These are on a low simmer out in the shop:
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Offline Tune-A-Fish©

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Re: Why not one more. Snowmobile engine deadtail
« Reply #24 on: Feb 05, 2016, 20:21:20 »
Now I know why I was avoiding this thread  :-\ I'm worse than a kid in Toys R Us... I want I want !!
"I didn't come here and I ain't leavin"  Willie Nelson

"love hard, live fast, die fun" Kacey Musgraves

"Like a Wreckin Ball!" Eric Church

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #25 on: Feb 05, 2016, 21:06:38 »
I'm glad you are getting the blame for this one, usually he manages to find some way to blame me for his harebrained ideas genius schemes. 
If there is ONE thing that I won't be able to blame you for, it's a hard tail lol
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #26 on: Feb 05, 2016, 21:07:32 »
Now I know why I was avoiding this thread  :-\ I'm worse than a kid in Toys R Us... I want I want !!
Get ya one man lol it will be cheap when it's done, and I know you got time =p lol
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline VonYinzer

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Re: Why not one more. Snowmobile engine deadtail
« Reply #27 on: Feb 06, 2016, 14:22:05 »
I'm glad you are getting the blame for this one, usually he manages to find some way to blame me for his harebrained ideas genius schemes.   

All I did was ask for a pic of the frame. That's it. He's the one who went all loony with snowmobile engines and whatnot. Lol.
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #28 on: Feb 06, 2016, 14:23:05 »
All I did was ask for a pic of the frame. That's it. He's the one who went all loony with snowmobile engines and whatnot. Lol.
Ha
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline HURCO550

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Re: Why not one more. Snowmobile engine deadtail
« Reply #29 on: Feb 06, 2016, 16:28:24 »
So, this is what happens when you can't get the clutch off. Start cutting.
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer