250 water cooled in a TNG LS49 mini scooter

[scrappydogscooters]

Put this together with parts laying around the shop. The little 2stroke burnt up, so the customer left it after hearing about the repair bill. The Tank Touring Cf250 was a wreck, but the engine was good, abeit with alot of mileage. Carb is a 30mm CVK off a Daelim S250. Performance coil, CDI, and air filter from our regular inventory. Radiator is where the head used to be. The bucket is gone, as the cylinder is there now. Made new engine and seat mounts. Still need to get a better fuel tank placement. Would like suggestions. Bike is quiet and torquey, but vibrates all the dried out plastic to death. I have also posted some pics on our performance page.
www.scrappydogscooters.com/Performance.html

Attachments:

[Enviromoto]

Where did you put the radiator?

[FootScoot]

I'm just guessing, but I think the radiator is where the "headlight" used to be. Looks like a normal 50cc scooter. What a sleeper. ;D

[scrappydogscooters]

Radiator is down below the floorpan, where the two stroke head used to be

[Enviromoto]

I wish you would have took some pictures of how you mounted this thing up. I bet its a real monster!

[Rebel]

What a swap, I like that you used the motor you did, the backwards slant of the cylinder gives you a lot of options on how to fit it in and not have a stretched wheel base if you don't want it. Do you know where the vibration is coming from?

[kliff]

Uhhhhh Hummmmmm...... this is what I was talking about, when we started this section. You can't hold the American Hot Rodder down! Sooner or later, he's gonna start swapping engines.

All he needs then is an "open" forum, with no brand delineations or barriers, just guys swapping engines in scooters cause they can!


GREAT to have you amongst us Scrappy! Just remember....we LIVE for pics! Enjoy yourself, and again, welcome.

[FootScoot]

Jan 30, 2010 11:01:47 GMT -5 scrappydogscooters said:

Radiator is down below the floorpan, where the two stroke head used to be

Cool! Hidden radiator. Ya just gotta like it. Sleeper sleeper sleeper. ;D

[scrappydogscooters]

The vibration is from the engine being solid mounted. The original CF mount have a cantilever rubber isolation unit that would have added undue length. This bike is only 1 inch longer that original.
I'll post some pics on a link. I had trouble putting more than one picture up for some reason, and I don't know how to add more.

[Rebel]

You are not concerned about damage caused by the vibration?

Adding pictures is a problem using the way you did it, here is a link to a tutorial for another way;

scooterrebels.proboards.com/index.cgi?board=general&action=display&thread=171

[FootScoot]

Feb 1, 2010 15:33:43 GMT -5 scrappydogscooters said:

The vibration is from the engine being solid mounted. The original CF mount have a cantilever rubber isolation unit that would have added undue length. This bike is only 1 inch longer that original.
I'll post some pics on a link. I had trouble putting more than one picture up for some reason, and I don't know how to add more.

Not knowing exactly how the engine is mounted, couldn't you use polyurethane bushings of some kind to eliminate some of the vibration? You would still get a good solid mount, but with a little cushioning.

[scrappydogscooters]

It was a consideration, but with the engine being the swingarm I certainly didn't want a swimmy rear end that the bushings would have given. This whole project was done for less than 200 bucks.
I am now adding our new 250 performance CDI tomorrow.

[montanarider]

What's the running temp on it now?