1st build, need help, lots

[bakaneko]

Yeah, you can get hub adapter for 20-30 but that is without the sprocket. I guess he will need the sprocket unless he can drill holes in the provided sprocket. There are sprockets for disc brakes and I believe you need an adapter for the disc brake itself - special disc brake type sprocket adapter and possible an additional bracket. I am not entirely sure but it looks like it can be done.

 

[David Bogle]

Be sure to measure twice and buy once, as great as a hub adapter is( gives you great adjustability with chain tracking and is certainly easier to install) but is far from cheap but worth it.

 

[JunkyardDog]

You definitely don't want to use the rag joint style sprocket. It's worth whatever you have to do to get around it. The other major problem, and this one is actually dangerous, is DO NOT use the frame mounted clamp on chain tensioner. Those things seem specifically designed to be sucked into the rear wheel. I found out the hard way. I have seen tensioners on eBay that attach to the engine, like this. http://www.ebay.com/itm/49-66-80cc-...hash=item2a3020ccd1:m:m-b3lt30KT8w_ql7lB4QDvw It is worth every penny.

 

[David Bogle]

I make my own in that style

 

[skyash]

Tensioner Basic brains if you do it up and can move it by hand no good if you're chain pulls so hard on it it movein no good

 

[skyash]

4 stroke same setup

 

[skyash]

A self adjusting tensioner is best

 

[Dadson]

How about wheels guys? What should I buy?

 

[JunkyardDog]

A self adjusting tensioner is best

The issue with that setup, other than the way it looks, is that if it is still using the wheel that came in the kit, it needs a MUCH better one, made out of super strong material and with motorcycle grade bearings. I have seen skateboard wheels used for rollers, and they should work. But for $35, I don't see the sense in rigging something even if it does work. That is only a tiny fraction of a good build. Seems like many motorized bike builders seem stuck on being cheap. I mean SUPER cheap, as in how can they save a couple of bucks. They look for the cheapest engine kits and use Walmart bikes. A well built motorized bike is still cheap, and for a little bit more than the absolute cheapest thing you can find, you can build a bike that not only won't fall apart on you, but won't get you killed either. If you are willing to pay for a proper rear sprocket mount, I don't see the issue with spending $35 on a proper tensioner. Those two things are the major weak points on all Chinese engine kits.

 

[David Bogle]

The issue with that setup, other than the way it looks, is that if it is still using the wheel that came in the kit, it needs a MUCH better one, made out of super strong material and with motorcycle grade bearings. I have seen skateboard wheels used for rollers, and they should work. But for $35, I don't see the sense in rigging something even if it does work. That is only a tiny fraction of a good build. Seems like many motorized bike builders seem stuck on being cheap. I mean SUPER cheap, as in how can they save a couple of bucks. They look for the cheapest engine kits and use Walmart bikes. A well built motorized bike is still cheap, and for a little bit more than the absolute cheapest thing you can find, you can build a bike that not only won't fall apart on you, but won't get you killed either. If you are willing to pay for a proper rear sprocket mount, I don't see the issue with spending $35 on a proper tensioner. Those two things are the major weak points on all Chinese engine kits.

The issue with that setup, other than the way it looks, is that if it is still using the wheel that came in the kit, it needs a MUCH better one, made out of super strong material and with motorcycle grade bearings. I have seen skateboard wheels used for rollers, and they should work. But for $35, I don't see the sense in rigging something even if it does work. That is only a tiny fraction of a good build. Seems like many motorized bike builders seem stuck on being cheap. I mean SUPER cheap, as in how can they save a couple of bucks. They look for the cheapest engine kits and use Walmart bikes. A well built motorized bike is still cheap, and for a little bit more than the absolute cheapest thing you can find, you can build a bike that not only won't fall apart on you, but won't get you killed either. If you are willing to pay for a proper rear sprocket mount, I don't see the issue with spending $35 on a proper tensioner. Those two things are the major weak points on all Chinese engine kits.

What irritates me is when people think that throwing money at something makes it better, if you've ever priced skateboard bearings there's nothing cheap about them. I would rather learn how to properly use a mig welder and drill press and fabricate my own parts than put my life in the hands of a person in China who makes a couple dollars a day, example double monarch forks that have more powder coat than weld, I will say there is nothing wrong with a Huffy beach cruiser frame, my ex wife crashed my newly completed bike going about 30 mph, talk about mixed emotions, lol. My bike still powered me home with its bent forks and bent rim to get the truck to go back and take her to the hospital, I know what you're thinking... No it wasn't due to a coaster brake failure, she panicked on a curve with obstructions, my frame and Chinese made motor were just fine, she however acquired 5 fractures to her pelvis after flying through the air almost 15 feet. The true art to a custom built motorized bicycle is not how much you can spend, but how much of your thoughts and labor you can put into it.