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My custom built 110cc midbike

September 15, 2009 by Stomper 

Hi, I’m building a midbike almost from scratch.

Parts I have to build: The front fork (made from a Yam Zuma fork), the frame, swing-arm and the exhaust.

Parts i got: 2 pocket bike wheels, brake, fairing and a 110cc 4sp engine.

The drawing are made with DeltaCad and pipe fitting with tubemiter.

The frame is made from Canadian steel and will be TIG welded.

ImageShack Gallery

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Frsh$huz's Avatar
Re: My custom midbike 110cc
If you need any parts pm me.....im parting out my x18. Selling exhaust, wires, frame, everything.
Old 08-25-2009 Frsh$huz is offline  
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#2  
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604birdman's Avatar
Re: My custom midbike 110cc
Quote:
Originally Posted by Stomper View Post
Hi, I'm building a midbike almost from scratch.

Parts I have to build: The front fork (made from a Yam Zuma fork), the frame, swing-arm and the exhaust.

Parts i got: 2 pocket bike wheels, brake, fairing and a 110cc 4sp engine.

The drawing are made with DeltaCad and pipe fitting with tubemiter.

The frame is made from Canadian steel and will be TIG welded.

ImageShack Gallery
i would be alil concerned on how narrow the top part of the frame is, a 110cc motor is pretty fat, so the frame towards the bottom may need to be widened. also have to plan ahead with how fairings are going to mount etc. keep it coming though i wanna see this thing.
Old 08-25-2009 604birdman is offline  
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#3  
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Re: My custom midbike 110cc
everything has been calculated, dont worry, on the pics you cant really tell.

The engine have 4" between the head and the front wheel so it's more than enough even for a 150cc engine.

the rear of the frame is not wide like your mini because i made it so the chain could be outside and the motor mount inside.

and remember that this is a pocketbike with shock, the plastic, wheel and brake come from a little CAG so it will be smaller than the X series.

It's not the first one i made, here is my prototype without shock.

http://img257.imageshack.us/img257/3934/18338833.jpg

YouTube - Pocket bike 4 stroke strike 2


Last edited by Stomper : 08-26-2009 at 07:28 AM.
Old 08-26-2009 Stomper is offline  
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#4  
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Re: My custom midbike 110cc
new pics of the swing-arm.

Imageshack - swing2x - Uploaded by Stomper25
Imageshack - swing1k - Uploaded by Stomper25
Imageshack - swing3 - Uploaded by Stomper25

welding of the frame and swing tomorow.
Last edited by Stomper : 08-27-2009 at 06:25 PM.
Old 08-27-2009 Stomper is offline  
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#5  
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Re: My custom midbike 110cc
Welding almost all done.

ImageShack Gallery
Old 08-28-2009 Stomper is offline  
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#6  
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Re: My custom midbike 110cc
looks good man, i know how hard it is to do this
Old 08-28-2009 hysteria411 is offline  
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#7  
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Re: My custom midbike 110cc
New pics
ImageShack Gallery
Old 08-31-2009 Stomper is offline  
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#8  
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Re: My custom midbike 110cc
frame done!

next step the exhaust, made from Inox 1/16 sheet.

the size of this little exhaust is diam 3¾" X 12".

I hope this one will have a good sound :bigsmile:

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Old 09-03-2009 Stomper is offline  
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Re: My custom midbike 110cc
i'm assuming those dimensions are for a muffler correct? if so, let me know how it turns out, i've been experimenting with muffler designs for my bike lately and haven't come up with anything that is quiet enough yet
Old 09-03-2009 hysteria411 is offline  
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#10  
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Re: My custom midbike 110cc
More pics of the muffler, I made the tubing today with a sheet because i dont want to buy 24' of inox tubing for 18".

I need to drill some hole in the tube, weld it, put insulating wool then the 3 rivet.
Attached Images
File Type: jpg file05464027083.jpg (354.3 KB, 52 views)
File Type: jpg file05474043264.jpg (340.6 KB, 31 views)
File Type: jpg file05493964706.jpg (269.9 KB, 31 views)
File Type: jpg file05483948810.jpg (244.2 KB, 30 views)
File Type: jpg file05500340513.jpg (388.2 KB, 41 views)
File Type: jpg file05510324745.jpg (413.8 KB, 51 views)
File Type: jpg FILE0552.JPG (506.7 KB, 65 views)
Last edited by Stomper : 09-04-2009 at 06:15 PM.
Old 09-04-2009 Stomper is offline  
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#11  
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Re: My custom midbike 110cc
I found this sprocket i think it's from an X6.

I bored 3 holes 13/64 in it.
Attached Images
File Type: jpg file05556530117.jpg (224.6 KB, 29 views)
File Type: jpg file05566514776.jpg (430.4 KB, 27 views)
Old 09-05-2009 Stomper is offline  
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#12  
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Re: My custom midbike 110cc
rear disc brake adaptor almost done + the caliper.
Attached Images
File Type: jpg file05597808884.jpg (236.3 KB, 49 views)
Old 09-06-2009 Stomper is offline  
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#13  
PBP RACER
Re: My custom midbike 110cc
muffler almost done, it needs a polishing.

Rear disc brake adaptor done!

Rear sprocket done!
Attached Images
File Type: jpg pipe5.jpg (356.0 KB, 25 views)
File Type: jpg pipe6.jpg (496.7 KB, 21 views)
File Type: jpg pipe7.jpg (286.7 KB, 15 views)
File Type: jpg pipe8.jpg (476.7 KB, 16 views)
File Type: jpg pipe9.jpg (450.9 KB, 19 views)
File Type: jpg rim1.jpg (438.0 KB, 27 views)
File Type: jpg rim2.jpg (383.4 KB, 23 views)
Old 09-08-2009 Stomper is offline  
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#14  
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Re: My custom midbike 110cc
new pics..............
Attached Images
File Type: jpg frame22.jpg (384.6 KB, 56 views)
Old 09-08-2009 Stomper is offline  
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#15  
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Re: My custom midbike 110cc
new pics.......
Attached Images
File Type: jpg pipe10.jpg (488.0 KB, 20 views)
File Type: jpg pipe11.jpg (468.2 KB, 15 views)
File Type: jpg pipe12.jpg (504.3 KB, 18 views)
File Type: jpg pipejoint.jpg (329.5 KB, 25 views)
Old 09-11-2009 Stomper is offline  
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#16  
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Re: My custom midbike 110cc
new pics....
Attached Images
File Type: jpg pocket1.jpg (370.2 KB, 76 views)
File Type: jpg stand.jpg (97.6 KB, 34 views)
File Type: jpg galiper.jpg (116.3 KB, 37 views)
File Type: jpg pocket2.jpg (407.1 KB, 94 views)
Old 09-11-2009 Stomper is offline  
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#17  
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CAM2's Avatar
Re: My custom midbike 110cc
Looks pretty good so far...I would double up on the lower fork clamp for extra strength against the extra weight and the engine could use a little more angle...You dont want the piston and crank rod smashing into the reservoir oil and the carb leaning too far forward causing idle , float setting problems and a possible smoky exhaust upon every startup...............Keep up the good work...........Peace
Last edited by CAM2 : 09-11-2009 at 08:44 PM.
Old 09-11-2009 CAM2 is offline  
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#18  
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Re: My custom midbike 110cc
The fork clamp is made of aluminum 7016 ½" thick, and the front fork came from a Yamaha Zuma, i dont think my bike has any extra weight compared with a scooter.

For the engine angle i agree.

new pics with engine angle correction.
Attached Images
File Type: jpg engineangle.jpg (296.2 KB, 100 views)
Old 09-12-2009 Stomper is offline  
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#19  
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CAM2's Avatar
Re: My custom midbike 110cc
Good deal with the forks and clamps...........Great job on the angle correction..Looking good so far....Whats your eta for a test ride?
Last edited by CAM2 : 09-14-2009 at 09:18 AM.
Old 09-14-2009 CAM2 is offline  
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