Safety of the 212cc motorbike kits?

JohnDoe2887 · 07-11-2016, 05:01 PM

How safe are those 212cc kits that you can mount on a bike? I a have been thinking about getting a cheapie mountain bike with rear suspension. Brace the hell out of it, then go put dirt bike parts on it.... (Triple tree, real breaks, rims, tires, etc, etc) I don't see me being able to get a hawk (or any bike) anytime soon. (As in the next year) So if anyone can state how well those things can hold up with time, or has anyone made one of these kits?

Sincerely,
John Doe

Adjuster · 07-11-2016, 06:21 PM

I have seen a lot of 80cc bicycle motors but never 212cc??? Do you have a link?

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JohnDoe2887 · 07-11-2016, 09:42 PM

Quote:

Originally Posted by Adjuster

I have seen a lot of 80cc bicycle motors but never 212cc??? Do you have a link?

/

Here you go!

Sorry for late reply I didn't see your post

Merlin · 07-11-2016, 06:36 PM

Quote:

Originally Posted by JohnDoe2887

How safe are those 212cc kits that you can mount on a bike? I a have been thinking about getting a cheapie mountain bike with rear suspension. Brace the hell out of it, then go put dirt bike parts on it.... (Triple tree, real breaks, rims, tires, etc, etc) I don't see me being able to get a hawk (or any bike) anytime soon. (As in the next year) So if anyone can state how well those things can hold up with time, or has anyone made one of these kits?

Sincerely,
John Doe

The 212 is a honda clone. Ive made a 200cc motorized bike but I did the job from scratch. If you do a good job there safe. I would go with thick spokes and double wall rims. Keep a close eye on all the bolts and spoke tightness. I wouldn't use an aluminum frame. Ive been trying to buy a real motorcycle cus Iam tired of playing with these. Ive made 4.

JohnDoe2887 · 07-11-2016, 08:35 PM

Quote:

Originally Posted by Merlin

The 212 is a honda clone. Ive made a 200cc motorized bike but I did the job from scratch. If you do a good job there safe. I would go with thick spokes and double wall rims. Keep a close eye on all the bolts and spoke tightness. I wouldn't use an aluminum frame. Ive been trying to buy a real motorcycle cus Iam tired of playing with these. Ive made 4.

May I ask why? Not really road worthy, or you looking for something more or what? I would think that would be as quick as a dual sport with a engine that big.... What typically fails first on these bikes? Have you seen any with a transmission? Could you get it registered as a motorbike or moped?

Merlin · 07-11-2016, 10:45 PM

Quote:

Originally Posted by JohnDoe2887

May I ask why? Not really road worthy, or you looking for something more or what? I would think that would be as quick as a dual sport with a engine that big.... What typically fails first on these bikes? Have you seen any with a transmission? Could you get it registered as a motorbike or moped?

The 200cc has a CVT tyranny. I built a 97cc four stroke flat head side valve using a heavy duty derailleur with a cartridge that has an overdrive and a granny gear its 7 speeds. The main problem is that bicycles wheels are not speed rated. They tend to fall apart at the speeds I ride. I have custom made double wall wheels that are doing fine so far.(cost a bundle) Getting the electrics working is tricky you have to setup some way to power it all. And there is no buddy seat. It costs more to build one then it costs to buy a china bike if you can find a china bike to buy that is. At least you wont get ripped off multiple time trying to buy a motorcycle like I have been. Just know the cost can add up very fast. Getting it reged is super tricky but Ive heard of people doing it.

JohnDoe2887 · 07-12-2016, 12:42 AM

Quote:

Originally Posted by Merlin

The 200cc has a CVT tyranny. I built a 97cc four stroke flat head side valve using a heavy duty derailleur with a cartridge that has an overdrive and a granny gear its 7 speeds. The main problem is that bicycles wheels are not speed rated. They tend to fall apart at the speeds I ride. I have custom made double wall wheels that are doing fine so far.(cost a bundle) Getting the electrics working is tricky you have to setup some way to power it all. And there is no buddy seat. It costs more to build one then it costs to buy a china bike if you can find a china bike to buy that is. At least you wont get ripped off multiple time trying to buy a motorcycle like I have been. Just know the cost can add up very fast. Getting it reged is super tricky but Ive heard of people doing it.

Okay thanks for your reply I have to rethink that now

Ps you may have saved me a bunch of money!

Merlin · 07-12-2016, 01:32 AM

Quote:

Originally Posted by JohnDoe2887

Okay thanks for your reply I have to rethink that now

Ps you may have saved me a bunch of money!

The only reason to build one of these is for the fun of it. You dont really save any money. Ive got well over $2000 into my 200cc bike. Its fun but I would have been better off with a china bike.

Adjuster · 07-11-2016, 10:07 PM

Pretty cool.

Thanks for the link.

/

BARLOW · 07-12-2016, 09:31 PM

i know that people around here ride the smaller cc bikes and are always replacing rear rims because the drive sprocket runs off of the spokes that were never made to have torque on them ... if i were going to build one i would mount the engine over the rear tire and make/buy a unit that drives off of the rear tire, not the spokes

JohnDoe2887 · 07-12-2016, 10:15 PM

Quote:

Originally Posted by BARLOW

i know that people around here ride the smaller cc bikes and are always replacing rear rims because the drive sprocket runs off of the spokes that were never made to have torque on them ... if i were going to build one i would mount the engine over the rear tire and make/buy a unit that drives off of the rear tire, not the spokes

Yea my plan was to replace the rims with ones that are solid (more like a car rim.) I wonder how well a friction drive would work? Be easier but I wonder how handling would be affected? (Higher center of gravity....)

Merlin · 07-12-2016, 11:15 PM

Quote:

Originally Posted by JohnDoe2887

Yea my plan was to replace the rims with ones that are solid (more like a car rim.) I wonder how well a friction drive would work? Be easier but I wonder how handling would be affected? (Higher center of gravity....)

Friction drive with a 212cc is not a good idea. It will make your tire bald very quick and when it gets wet it slips. You want to drive it with a jack shaft and a strong sprocket.

BARLOW · 07-12-2016, 11:31 PM

Quote:

Originally Posted by Merlin

Friction drive with a 212cc is not a good idea. It will make your tire bald very quick and when it gets wet it slips. You want to drive it with a jack shaft and a strong sprocket.

sprocket is not the problem, it is what the sprocket goes on

Merlin · 07-12-2016, 11:48 PM

Quote:

Originally Posted by BARLOW

sprocket is not the problem, it is what the sprocket goes on

The sprocket goes on a disk brake hub. Use a sprocket instead of or with the disk. My setup uses a adapter I made to use with a disk and a one way sprocket so the pedals dont spin when your riding. One side of the hub you peddle with. The other drives the wheel.

nonone · 07-12-2016, 11:50 PM

I've ridden a few mainly the 66cc marketed as 80cc but a few bigger. Unless you do some serious stuff to them like Merlin has they are supper sketchy scary. The tires / rims and brakes seem to make the most difference but having a good suspension and drive train would be a big plus. I knew one nut who put one on a fixed gear. It did not last long.

07-11-2016, 05:01 PM	#1
JohnDoe2887 Join Date: Jun 2016 Posts: 60	Safety of the 212cc motorbike kits? How safe are those 212cc kits that you can mount on a bike? I a have been thinking about getting a cheapie mountain bike with rear suspension. Brace the hell out of it, then go put dirt bike parts on it.... (Triple tree, real breaks, rims, tires, etc, etc) I don't see me being able to get a hawk (or any bike) anytime soon. (As in the next year) So if anyone can state how well those things can hold up with time, or has anyone made one of these kits? Sincerely, John Doe __________________ Sincerely, John Doe "All forms of madness, bizarre habits, awkwardness in society, general clumsiness, are justified in the person who creates good art." -Roman Payne "Truth is stranger than fiction, but it is because Fiction is obliged to stick to possibilities; Truth isn't." -Mark Twain "I have never made but one prayer to God, a very short one: Oh Lord, make my enemies ridiculous. And God granted it." -(Letter to Étienne Noël Damilaville, May 16, 1767)
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07-11-2016, 06:21 PM	#2
Adjuster Join Date: Dec 2014 Location: Deerfield Beach FL Posts: 1,410	I have seen a lot of 80cc bicycle motors but never 212cc??? Do you have a link? /
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07-11-2016, 10:07 PM	#9
Adjuster Join Date: Dec 2014 Location: Deerfield Beach FL Posts: 1,410	Pretty cool. Thanks for the link. /
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07-12-2016, 09:31 PM	#10
BARLOW Join Date: Jan 2016 Location: central illinois Posts: 362	i know that people around here ride the smaller cc bikes and are always replacing rear rims because the drive sprocket runs off of the spokes that were never made to have torque on them ... if i were going to build one i would mount the engine over the rear tire and make/buy a unit that drives off of the rear tire, not the spokes
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07-12-2016, 11:50 PM	#15
nonone Join Date: Jul 2014 Posts: 75	I've ridden a few mainly the 66cc marketed as 80cc but a few bigger. Unless you do some serious stuff to them like Merlin has they are supper sketchy scary. The tires / rims and brakes seem to make the most difference but having a good suspension and drive train would be a big plus. I knew one nut who put one on a fixed gear. It did not last long.
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