keatonx
Member
Hi, I'm making a motored bike with a sachs 160cc rotary/wankel engine that I'm building from the engine block up (was missing almost all the parts, except for the main housing, side plates, rotor, etc. I'm modding an ignition from a weed wacker to fit, making a fan for cooling, cutting down mazda RX7 apex seals to fit it, making an intake manifold, etc. 90% of the parts are missing tons and tons of work to get it working).
Anyways it makes 8hp STOCK and will rev to 11 000rpm ungoverned wit no other mods. So it will be an insanely powerful and fast bike, and the last thing I want is this engines torque twisting the frame apart at high speeds. I've decided to put it on a BMX bike, because they seem alot sturdier built, with stronger frames, more spokes, etc. (and they also look awesome LOOL). The bikes I'm looking at on kijiji/craigslist are a diamondback BMX, a (probably cheap) "razor" BMX, a schwinn "havoc", and maybe a Dyno brand BMX.
What I'm wondering is if the cheap bikes (razor, dyno, schwinn) are built with stronger frames, as they are heavier than expensive bikes (daimondback). Because what I'm afraid of is buying the daimondback (my gut reaction), and it being weaker than the cheap bikes because it's likely made from thinner materials to conserve weight. And I don't care at all for weight, I just want the absolute strongest frame.
Here's the link to the daimondback ad-
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-Good-condition-bmx-W0QQAdIdZ515438958
Here's the link to the razor (my second choice)
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-bmx-for-sale-W0QQAdIdZ517231708
This is my second choice, because the frame tubes look thicker. However it has a really steep headtube angle, which would make high speed wobble more likely.
I can't find the dyno ad anymore, maybe it's been sold?
Here's the schwinn havoc-
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-SCHWINN-HAVOC-W0QQAdIdZ519596372
I know I'm being really safety conscious, but I'm going to be investing alot of work/time into building this engine/bike and want to make it last, and preferably not send me to the hospital if it breaks haha!!
Anyways it makes 8hp STOCK and will rev to 11 000rpm ungoverned wit no other mods. So it will be an insanely powerful and fast bike, and the last thing I want is this engines torque twisting the frame apart at high speeds. I've decided to put it on a BMX bike, because they seem alot sturdier built, with stronger frames, more spokes, etc. (and they also look awesome LOOL). The bikes I'm looking at on kijiji/craigslist are a diamondback BMX, a (probably cheap) "razor" BMX, a schwinn "havoc", and maybe a Dyno brand BMX.
What I'm wondering is if the cheap bikes (razor, dyno, schwinn) are built with stronger frames, as they are heavier than expensive bikes (daimondback). Because what I'm afraid of is buying the daimondback (my gut reaction), and it being weaker than the cheap bikes because it's likely made from thinner materials to conserve weight. And I don't care at all for weight, I just want the absolute strongest frame.
Here's the link to the daimondback ad-
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-Good-condition-bmx-W0QQAdIdZ515438958
Here's the link to the razor (my second choice)
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-bmx-for-sale-W0QQAdIdZ517231708
This is my second choice, because the frame tubes look thicker. However it has a really steep headtube angle, which would make high speed wobble more likely.
I can't find the dyno ad anymore, maybe it's been sold?
Here's the schwinn havoc-
http://toronto.kijiji.ca/c-buy-and-sell-bikes-bmx-SCHWINN-HAVOC-W0QQAdIdZ519596372
I know I'm being really safety conscious, but I'm going to be investing alot of work/time into building this engine/bike and want to make it last, and preferably not send me to the hospital if it breaks haha!!