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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #8561  
Old 10-25-2015, 09:43 AM
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tgaydos tgaydos is offline
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Default Re: what did you do to your motorized bicycle today?

i was stopped by a cop the other day and was only told to keep it under 20mph in the bike lane. i'm in astoria and for th most part they don't bother us.
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  #8562  
Old 10-25-2015, 02:52 PM
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by tgaydos View Post
i was stopped by a cop the other day and was only told to keep it under 20mph in the bike lane. i'm in astoria and for th most part they don't bother us.
Cool. I'll be ending up in Brookings so I hope they're cool in the South West corner of the state as well
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  #8563  
Old 11-12-2015, 10:29 PM
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Default Re: what did you do to your motorized bicycle today?

Got new tires, Bell Glides with Kevlar. Look like they're going to rock. $46.33 total for the pair. Nice tread depth, and some of the 'lugs' along the edges are corrugated for more "sidebite"
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  #8564  
Old 11-12-2015, 10:37 PM
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tgaydos tgaydos is offline
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Default Re: what did you do to your motorized bicycle today?

not motorized but i cut 5.5" off each end of my handle bars today and oh boy does it feel so much better.
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  #8565  
Old 11-12-2015, 11:12 PM
TheNecromancer13 TheNecromancer13 is offline
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Default Re: what did you do to your motorized bicycle today?

Today, I finished my engine swap from a 66cc 2 stroke to a 79cc predator, and then promptly crashed the bike while test riding it when I hit a patch of leaves during a turn and the new motor was powerful enough that it started to "burn rubber" and I laid down the bike. Had to stomp on the pedal to bend it straight again so it would clear the frame and I could ride it the rest of the way around the block (yes, I crashed while riding in circles around my block, my pride is horribly wounded), scraped my knee and elbow, but the bike's fine and so am I (mostly), so I'm happy. The new motor does about 45 and can take off from a standing start and accelerate up a steep hill and do wheelies!
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  #8566  
Old 11-12-2015, 11:26 PM
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Default Re: what did you do to your motorized bicycle today?

Necromancer I'm looking at getting a pred for my current build the "blue bomber" above how'd you mount a sprocket to the engine?
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  #8567  
Old 11-12-2015, 11:56 PM
TheNecromancer13 TheNecromancer13 is offline
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by tgaydos View Post
Necromancer I'm looking at getting a pred for my current build the "blue bomber" above how'd you mount a sprocket to the engine?
I used a max torque clutch coupled with AGK's jackshaft and replaced the 22t on the jackshaft with a 36t, however you might not have to, I have 29" tires and a 36t rear sprocket, and I needed a bit more power.
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  #8568  
Old 11-13-2015, 12:01 AM
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Default Re: what did you do to your motorized bicycle today?

i have a 26" wheel and want to climb the hills i live on.
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  #8569  
Old 11-13-2015, 12:08 AM
TheNecromancer13 TheNecromancer13 is offline
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by tgaydos View Post
i have a 26" wheel and want to climb the hills i live on.
Well, with my current setup, my end gear ratio is about 13:1 and I can accelerate up a steep hill to about 25-30mph. Here's a gear ratio calculator if you want to plug in some numbers yourself: https://www.affordablegokarts.com/GearCalc.php

I'm running the 11t max torque clutch to a 36t input on the jackshaft to a 9t on the output to a 36t on the wheel. With your 26" wheels... let me do some mental math here... you could get the same results with a gear ratio of 11.7ish:1.

Btw are you going to remove the governor system?
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  #8570  
Old 11-13-2015, 12:16 AM
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Default Re: what did you do to your motorized bicycle today?

i'm reading up on how to remove the governor.
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