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Kimjon's 110cc 4 speed pit bike motorised drift trike build


Kimjon

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Wow I'm tired after writing that title... I'll let the pictures do the talking:

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And that' half a days work. Progress was slowed by starting with cheap shit that I had to fix...nastyness at its best...

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Pressing seized on crap off the shafts. ..only to reviel some monkey drill about 11 holes in the shafts to try "key" the components on...what a fucktard! Anyway...left with no alternative other than scraping it...I resorted to welding in the holes and linishing it back...actually worked quite well.

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That's it for now...but taking shape nicely.

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Slowly taking shape.

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Ironically I'm struggling to find a cheap donar bmx to form the front end. Trademe bikes are lsited at ridiculous prices for junk. I want junk...just don't want to pay new prices for it. But I'm sure something will turn up soon.

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So I need a 1:1 ratio from motor to axle based on wheel size.

This is the sprocket off the gearbox output shafts. 

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So it's as simple as using another one the same eh...yeah/nah... problem is, its fucking harder than hell! Most likely some kind of cyanide harding treatment after machining. That's awesome for wear resistance...not so awesome for me to machine out to 1" to fit my axle.

Solution: dremel time!

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After an hour...and I'm slowly loosing the will to live. About now I'm thinking 30K for a cnc laser isn't that much money to find???

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Another hour later, i have a strange sense of achievement... i can smell succes near by...

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Queue celabration song: 

Just a small town girl
Livin' in a lonely world
She took the midnight train goin' anywhere
Just a city boy
Born and raised in south Detroit
He took the midnight train goin' anywhere
A singer in a smoky room
A smell of wine and cheap perfume
For a smile they can share the night
It goes on and on, and on, and on
Strangers waiting
Up and down the boulevard
Their shadows searching in the night
Streetlights, people
Living just to find emotion
Hiding somewhere in the night
Working hard to get my fill
Everybody wants a thrill
Payin' anything to roll the dice
Just one more time
Some will win, some will lose
Some were born to sing the blues
Oh, the movie never ends
It goes on and on, and on, and on
Strangers waiting
Up and down the boulevard
Their shadows searching in the night
Streetlights, people
Living just to find emotion
Hiding somewhere in the night
Don't stop believin'
Hold on to the feelin'
Streetlights, people
Don't stop believin'
Hold on
Streetlights, people
Don't stop believin'
Hold on to the feelin'
Streetlights, people

 

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19 hours ago, Valiant said:

Colin Furze would be truly proud!

Where did you get the motor from? how much was it?

 

 

 

Totally. 100% credit to the furze!

I got the motor off trademe. $75 and came with a very smashed pit bike. Dude must have tried back flipping it or something as only the front wheel and motor were salvageable...the rest was bent or twisted.

I brought a bmx last night. It' way to cool to cut up...but fuck it...I'm going too. So everything is coming together.

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3 minutes ago, nvmyvl said:

I've asked about bmx bikes, thru my brother who works for avanti..  if your still keen on some, I will let you know what happens.

 

Thank you. I'm sorted now...but really appreciate the thought.

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I'm procrastinating...I just can't bring myself to sentence this bmx to death! It's just so much fun to ride.

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But all good things must come to an end, so my dear bmx friend...it's been fun while it lasted...but your time is up buddy!!!

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Next up is to figure out carburetor.

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Carburetor in normal position.

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This is the way it needs to face...but the carburetor bowl hits the motor.

"The Furze" cut and tig welded his intake at a wonky angle so it faces forward and on a 45° angle to the side of the downtube. Functional...but ugly. 

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I'm going to machine a manifold out of this block of aluminium to space it high enough to just clear the motor. It will is give me an opportunity to machine in a vacuum port so I can run a diaphragm pump to a petrol tank mounted lower than the carb.

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