hello from LA

D

drag_bike

New Member
hello i just join last week and I am very happy to know that is a group of gear heads and enthusiasts with a lot experience and knowledge i have a 80 cc with the sick bike shifting kit on a Kent 29"X3 fat tire, The engine is ported exhaust tuned and performance carb, is quite a ride... but this is my fourth bike, all being fat tires 26"X4", I am a performance auto mechanic that enjoin the motorized bikes... Thanks for let me in on your Forum.trk
 
The first bike is a GoPed 23cc friction engine that is clutch by the parking brake i install on the frame, is a good bike but kind slow and when it rains i cant use it due to the slippage of the drive on the tire, the second one is the last one i build and it have an 80cc ported engine and the sick bike transmission, that one is very fast, yet to check the max mph...
 

Attachments

  • 20160523_110209_resized_2.jpg
    20160523_110209_resized_2.jpg
    437.5 KB · Views: 162
  • 20160523_110227_resized_2.jpg
    20160523_110227_resized_2.jpg
    419.8 KB · Views: 166
  • 20160523_110455_resized_2.jpg
    20160523_110455_resized_2.jpg
    476.9 KB · Views: 172
  • 20160524_084115_resized_1.jpg
    20160524_084115_resized_1.jpg
    378.7 KB · Views: 163
  • 20160524_084126_resized_1.jpg
    20160524_084126_resized_1.jpg
    385.7 KB · Views: 148
This is the pics from the other bikes (fat tire 26X4) that i make on the middle (second and third) and sone details on the motor mounts, on the engine i have to machine the engine in order to have clearense on the frame
 

Attachments

  • 20160429_120945_resized.jpg
    20160429_120945_resized.jpg
    449.4 KB · Views: 163
  • 20160518_133824_resized.jpg
    20160518_133824_resized.jpg
    443.5 KB · Views: 164
  • 20160523_110527_resized_3.jpg
    20160523_110527_resized_3.jpg
    425.3 KB · Views: 178
  • 20160524_084225_resized_2.jpg
    20160524_084225_resized_2.jpg
    363.2 KB · Views: 156
  • 20160524_084235_resized_2.jpg
    20160524_084235_resized_2.jpg
    353.2 KB · Views: 166
Thanks guys, yes is not that easy to install the engines on those fat tire bikes at first i have to think a lot of how to install the engine with out touching the tire with the chain... now that i seen all the mods that you guys are making on your bikes I feel like is more to be done, my next build will going to be a dyno with a 212 predator, i know is being done before but I will try to make it unique and fast...
 
drag_bike said:
Thanks guys, yes is not that easy to install the engines on those fat tire bikes at first i have to think a lot of how to install the engine with out touching the tire with the chain...
Click to expand...
Naw, you just choice the wrong way to motorize it is all.
I put a 1KW electric shifting system on the one I did.

2_MongooseFatFL-1280.jpg


now that i seen all the mods that you guys are making on your bikes I feel like is more to be done, my next build will going to be a dyno with a 212 predator, i know is being done before but I will try to make it unique and fast...
Click to expand...

Hey, to each his own I guess, but I think a 212cc engine on a bicycle is about as silly an idea as...
never mind...
Have fun and try to stay alive.
 
KCvale said:
Naw, you just choice the wrong way to motorize it is all.
I put a 1KW electric shifting system on the one I did.

2_MongooseFatFL-1280.jpg




Hey, to each his own I guess, but I think a 212cc engine on a bicycle is about as silly an idea as...
never mind...
Have fun and try to stay alive.
Click to expand...

Hah, 10/10. This'll be him with a 210 on a fat tire bike: xct2
 
Welcome to the forum! Those are really cool bikes, very nicely done! It's nice to have a mechanic join, anything you can say to help us non-mechanics is appreciated!

brnot
 
Hahaha you guys.... well as a performance mechanic i always try to get a fast ride, now i don't know how this is going to end, but I starting to see signs of addiction to this little bikes... lol
And the electric bike is real head turner if I some day free my self of the gasoline addiction i will make an electric bike!!!
 
Tyler6357 said:
Welcome to the forum! Those are really cool bikes, very nicely done! It's nice to have a mechanic join, anything you can say to help us non-mechanics is appreciated!

brnot
Click to expand...

thanks and if you need some advice on welding/bracing or machining i will be happy to help you guys
 
drag_bike said:
that you mention gears....
is gear hubs strong to hold a 212 modified?
or i should relay on the shift kit from sbp?
Click to expand...
They are the same thing.
You use the shift kit to move your power output to the right side and use the bicycles gears.

Doubtful bicycle parts will handle a 212cc engine.

If you want to put motorcycle power on something, put it on a motorcycle frame.... with pedals to stay kinda-legal ;-}

2_MotoPedDoneL-1280.jpg


2_MotoPedDoneR-1280.jpg


MotoPedDoneBL.jpg


That was just an 86cc 4-stroke semi-auto 4-speed engine and it was a rocket.

The point is, all the parts are deigned for motorcycle engines and their power, most bicycles are not.

That MotoPed frame is rated for 250cc if memory serves, but a moot point, your engine wouldn't fit it and it was ~$2500 delivered completely disassembled.

If you are bound and determined to use that engine please put it in a sturdy bikes with great brakes.
 
You must log in or register to reply here.
Back
Top