Boostdoctor's open class "Smoking Doodle"!!

[KB2ROCKET]

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I wish I had a welder

 

[incogrhino]

Trannys...... who needs em.:grind::thumbsup:

 

[boostdoctor]

more progress.
I stretched the frame 18" and got the rear width to 13 3/4" without making any bends. I think it looks good for my first frame. I still have to put in more braces and make the motor mounts etc.

 

[minibikekid]

Powerband will be a tad bit scary on that little frame! What would look awesome is an extended fatty pipe like that drag banshee's run. Love me some 2 strokes!

 

[Stangrcr1]

Looks a lot like mine last year. Good progress!

Got the tire picked out?

 

[boostdoctor]

Looks a lot like mine last year. Good progress!

Got the tire picked out?

I have a 10x10 wheel and a 18-8-10 American Racer asphalt tire that I had sitting around. Gonna mount it up and see what it looks like tomorrow.

 

[Stangrcr1]

10 inch wheel won't leave much room for chain...

 

[boostdoctor]

10 inch wheel won't leave much room for chain...

Is 2" enough? I should have that on each side, if not I will mount the chain and brake outside the frame. At least that will make sprocket changes simple. I still have to figure what I'm going to use to mount a 520 sprocket to my jack shaft. I found a rear sprocket to fit the standard go kart hub, but nothing for the front. I hate to get a front hub machined. I already have to get a coupling machined to mount the primary clutch.....and that will probably be expensive

 

[N8ball]

I have to say it. This is nuts. And I love it. I can't help but remember the Mickey Thompson stadium race buggies that ran a similar motor. And you're putting it in a mini bike. Again....nuts. Carry on.

 

[Stangrcr1]

A 50 series sprocket will work with 520 chain if you machine the tooth width down to 1/4"(.227" actually). Same pitch, same roller, etc.

 

[boostdoctor]

A 50 series sprocket will work with 520 chain if you machine the tooth width down to 1/4"(.227" actually). Same pitch, same roller, etc.

You are the damn man!!!!!! Thanks. Grainger has those.

 

[Ratbike]

Love those stetched frames!!! :thumbsup:Haven't tried it myself yet...:shrug:

 

[boostdoctor]

Love those stetched frames!!! :thumbsup:Haven't tried it myself yet...:shrug:

What are you waiting on? I paid $20 for 16ft of tubing.

 

[boostdoctor]

My wheel , tire combo for the rear.

 

[minibikekid]

Going to be one wicked machine that's for sure!

 

[boostdoctor]

I found a complete race cart axle assembly for $50. I have to drive a hour and a half to pick it up though. Waiting on this little snow to clear then I'm on the way. Then it will start to look like a bike.

 

[Ratbike]

Very cool!!!:thumbsup:

 

[boostdoctor]

I have the axle mounted. It's starting to look like a bike.:biggrin:

Ok, now it's time for some bracing. Stay tuned!

 

[Ratbike]

Kickin' It!!:thumbsup:

 

[boostdoctor]

I did some bracing today. I'm out of pipe, so that's all for now.