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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise, if you could use some help in figuring out what is wrong with your engine and what needs to be done to achieve top performance.

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  #11  
Old 01-09-2017, 01:08 PM
Senjikua13 Senjikua13 is offline
Motorized Bicycle Newbie
 
Join Date: Jan 2017
Location: Jacksonville, Fl
Posts: 7
Default Re: Need Recommendations and Help

You said kits are bad and in your instructable you recommend GTC Jackshaft, it doesnt appear to sell just the jackshaft rod but a kit itself. Will it fit at 212cc compared to a 79cc?

What do you rate these brakes at? -> https://www.amazon.com/Shimano-BL-M3...breaks+bicycle

Last edited by Senjikua13; 01-09-2017 at 01:10 PM. Reason: had another question I forgot
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  #12  
Old 01-09-2017, 01:17 PM
TheNecromancer13 TheNecromancer13 is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2015
Location: Portland, Oregon
Posts: 379
Default Re: Need Recommendations and Help

When I said kits are bad, I was referring to the ones that claim to have "Everything you need to get your bike up and running" or some crap like that. The ones that have the stock rag joint sprocket and then tell you it will hold up fine to any engine, let alone a 212.

Come to think of it, I'm not sure if the GTC jackshaft will fit the 212 predator, I've only ever used it with the 79cc. I just sent them an email inquiry, I'll post when I hear back.

If it turns out that the GTC jackshaft does fit, the parts you will want to use are the jackshaft plate, the keyed shaft, and the 10t sprocket. You'll probably need larger than a 17t sprocket for the first stage gear reduction.
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  #13  
Old 01-09-2017, 01:25 PM
Senjikua13 Senjikua13 is offline
Motorized Bicycle Newbie
 
Join Date: Jan 2017
Location: Jacksonville, Fl
Posts: 7
Default Re: Need Recommendations and Help

Thanks for your help on this. Reading over the instructable has made things a lot simpler. Ill have to show you my mounting plate when I get a chance. I am figuring out the amount im going to spend building this and boy its going to be fun avoiding cops haha jk. im going to try and get it registered.
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  #14  
Old 01-09-2017, 01:32 PM
TheNecromancer13 TheNecromancer13 is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2015
Location: Portland, Oregon
Posts: 379
Default Re: Need Recommendations and Help

I'm pretty sure that any gas powered bicycle is illegal in Florida, regardless of engine size. You definitely won't be legal on a 212cc. However, not being legal doesn't stop me from riding either of my bikes, and where I live, it seems that as long as you don't act like an idiot, the cops could care less about the size of your engine.

How much were you intending to spend on your build?
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  #15  
Old 01-09-2017, 03:06 PM
Senjikua13 Senjikua13 is offline
Motorized Bicycle Newbie
 
Join Date: Jan 2017
Location: Jacksonville, Fl
Posts: 7
Default Re: Need Recommendations and Help

Well I'm just seeing how many pay checks I'd have to spend to get the dream setup and it's a Macargi stretched beach cruiser that I want for a base which is about 320 plus shipping or around 450 total. I've had one in j-Ville and i have gotten stopped a couple times once for being in a neighborhood after a person broke into several cars the night before and they said as long as it stays under 50cc it's legal
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  #16  
Old 01-09-2017, 04:18 PM
TheNecromancer13 TheNecromancer13 is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2015
Location: Portland, Oregon
Posts: 379
Default Re: Need Recommendations and Help

Just heard back from AGK, the GTC jackshaft does fit the 212 as well as the 79. Although if you're using a micargi stretch cruiser, why not just make your own jackshaft and save some money? The bike in the pictures of my homemade jackshaft is a micargi puma stretch. BTW, while the micargi frame is great for motorizing, the rest of the bike is extremely low quality, expect to replace wheels, fork, and bearings at the very least, and fabricate your own brake mounts.
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  #17  
Old 01-09-2017, 06:42 PM
ragdolldude ragdolldude is offline
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Join Date: May 2016
Location: Mira Loma, CA
Posts: 32
Default Re: Need Recommendations and Help

You may not hit your target MPH with the governor hooked up. Between a speedometer and a tach, you should be able to do your 30 mph without hitting your "red line" rpm. I'm going to pick up a build from KC in a couple of weeks. Nuvincii rear end which has a lower than normal gearing than a multispeed rear hub, with variable ratios that include an overdrive higher than normal. Even with this equipment, I can control speed between adjusting rear gearing and adjusting the throttle. 53cc HS motor, and this engine has produced about 43 mph without the engine fully broken in.
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