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Old 12-05-2013, 01:53 PM   #1
rmcconnell33 OP
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Laugh Lite Trail Bike

I have been thinking about building a super lite trail bike for a long time, something kind of like the FX bikes, I have had a lot of idea's, so I finally decided to try it out, I have finished the first prototype. And I am totally pleased.. And now I have started in the second one making a few improvements concerning components.

The base was to use a Honda CRF50 and add down hill mountain bike components, couldn't find a reasonable priced CRF to cut up, so for the first try I used a Chinese 125cc pit bike. I stretched the frame, added Marzocchi down hill forks and a 26" front wheel, and then had to fabricate a swing arm.

After several trail and error attempts I cam up with a design that would work for a test.

I had to lower and move the foot pegs back, and tried several different gearing combinations, before I got it were it was a blast to ride. once finished I had to put new plastics on it.. I am calling it the trail lite.

Final weight is 93 lbs wet. It's very nimble and feels super light
Some of the items I am changing on build number two, is better forks
and a real rear rim.. The Mountain Bike stuff is super lite, but it wasn't designed to have power applied to it either! I have bent the spokes twice..lol but while I am gathering parts for the next and final build, I am still riding this one. I will post more pictures of the final build.

rmcconnell33 screwed with this post 12-05-2013 at 03:24 PM
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Old 12-05-2013, 02:59 PM   #2
BC61
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Pictures aren't showing, did it come out looking anything like this? A friend of mine built this, cross between motorcycle and pedal bike.

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Old 12-05-2013, 08:10 PM   #3
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Very cool!
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Old 12-05-2013, 10:38 PM   #4
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Old 12-07-2013, 09:57 AM   #5
orangebear
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The pushbike wheels look to thin and weak. I would run proper wheels and fork so nothing will brake at speed .
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Old 12-07-2013, 11:07 AM   #6
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The pushbike wheels look to thin and weak. I would run proper wheels and fork so nothing will brake at speed .
Looks like 48 spoke wheels to me. Plenty strong.

I have gone 65 on similiar on a 160cc similiar machine.

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Old 12-07-2013, 04:26 PM   #7
rmcconnell33 OP
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Thanks, the wheels "rear wheel" seems strong enough, but I have bent the spokes at the hub! They weren't designed to have any torque on them. Lol. I am switching to an excel rim and real spokes.

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Old 12-07-2013, 04:49 PM   #8
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Old 12-07-2013, 07:54 PM   #9
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Woh, Crazy! Talk about super light weight bike!

I LOVE IT!

Can't wait to see you're Gen2 version.
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Old 12-08-2013, 06:20 AM   #10
tdvt
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Very cool bike!

All three pics look like close kin, design-wise. Is the pit bike frame steel or aluminum?

Any more construction pics? I was also wondering about wheelbase & seat height? Looks like huge ground clearance.

Subscribed & thanks for sharing.
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Old 12-08-2013, 04:47 PM   #11
OConnor
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I like the OP's bike with regular pegs, can't imagine pedaling a 100lb. mountain bike up a hill.
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Old 12-10-2013, 12:38 AM   #12
Luke
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Really nice build! Any more pictures?


Looking forward to the next one.
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Old 12-10-2013, 07:44 PM   #13
rmcconnell33 OP
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I do, I am traveling for work currently when I get home this weekend I'll post some more.
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Old 12-11-2013, 03:45 PM   #14
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Quote:
Originally Posted by OConnor View Post
I like the OP's bike with regular pegs, can't imagine pedaling a 100lb. mountain bike up a hill.
In much of Europe, if there are pedals, it is a different class of motorbike and can be ridden by youths. No pedals, no youth license. Here in the states it is the opposite, No Pedals or No Sale! Nobody pedals these "mopeds" around...

There was a pitbike maker that imported a 21" front and 19" rear 125 with tall frame, back a few years ago. Same concept, just add pitbike parts instead of MTB parts. I'll post a pic when I find one...
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Old 12-24-2013, 11:26 AM   #15
rmcconnell33 OP
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Here are a couple more Pic's



and some fun in the snow..
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