Friday nights again this fall/winter at SCI. This time we're building motorized bikes

[chadsci]

Hey all,

We had so much fun last year building the Radio flyers that I have been looking for a project for the fall/winter. Awhile back I found these guys building Boardtrack racers online. Using EBAY 60-80cc motor kits and building and/or modifying frames to resemble board track motorcycles they build stuff like this.

http://motorbicycling.com/attachments/f14/9544d1245205538-halcyon-cycle-works-board-track-replica-halcyoncycleworks3.jpgand this.
http://motorbicycling.com/attachments/f38/25810d1276931743-who-built-board-track-racer-side-.jpg

Link to motor kits online. http://www.bikeberry.com/gas-engine-kits.html

Those interested in building something cool this Fall/winter join in here. While I will be building a replica board track bike any type of bike is welcome.
http://1.bp.blogspot.com/-JNhloRP4ktg/TkeJZswxrOI/AAAAAAAABSk/44ciHwWpsKo/s1600/5a.jpg

Like we did last year the shops tools will be available for use by those building. The welders(Mig and Tig), grinders, torches, shear and metal shrinker/stretcher and this year the 8 foot leBlond lathe and bridgeport for those tricky parts.

Let me know if you want in.

[Renown]

I think I am down for this winter adventure.

[Das VR6]

those are super cool. i work every friday night till like 11 though haha.

[I luv Box]

That looks badass. I may be in, if the wife lets me :-)

[chadsci]

These things can be built for as cheap as $200-300. I plan on using a brigs vanguard motor if I can find one cheap enough.
On craigslist there are all kinds of vintage frames or vintage style bikes for cheap.

[Die Frau]

Not sure if I will build one of these, but I will be hanging out as much as possbile! I still have a few small things to perfect on the wagon yet...

[JohnB123]

I'm down for hanging out and spectating :)

[hapsbang]

wish I could fit this into my schedule

[I luv Box]

So what all would we need in terms of supplies? Bike and motor kit?

[igotacaddy]

I have a 2 cycle weedeater motor. If someone is on a tighter budget, It could be had for the low low price of Free.

I should be down a few different times

[JUSTION337]

I think I'll participate as well. I'll probably work on it mostly up here in Saint Cloud and go down there every so often and fabricate and hang out with you guys. This is just the project to get me back into top welding and fabricating form.

[JTapper]

I've been thinking of making a gasbike for a while...

Gasbike.net has some neato kits, or just parts if you want to piece together your own setup.

[Jack]

This sounds like fun to me!
So do these get classified as mopeds if you stay under 50cc? I'm not sure how the law works when you put a motor on something that didn't have it before.

I've done some exploring but I keep finding contradictions. I found one this that said motorized bicycles under 50cc and under 30mph don't need registration and I've found ones that said they do. So what happens if I want an 80cc do I have to get motorcycle registration and put lights on it?

[Jack]

Someone build this
http://www.ebaumsworld.com/video/watch/81791004/

[Jigs]

So what happens if I want an 80cc do I have to get motorcycle registration and put lights on it?

Tell the cop that pulls you over its a motorized bike and its a modded 49cc... like he is going to be able to tell its 80cc. And there is nothing illegal about modded 50cc's

[sprstu]

This could be a really good time. EW show-off as well?

[sprstu]

Are people going to try and build their own frames and forks or what? attain an old steel frame bike and build in a tank and engine?

Derringercycles.com

[KOOTER]

I wish I had time to get in on this. If you guys need me to come in a weld up stuff LMK. I would be happy to come down and take part.

[KOOTER]

Tell the cop that pulls you over its a motorized bike and its a modded 49cc... like he is going to be able to tell its 80cc. And there is nothing illegal about modded 50cc's
Anything under 49cc and has the option for human power is considered a motorized bicycle. This is legal in MN.

Also up to 3 wheels over 12"?

http://www.youtube.com/watch?v=hTovZdu2SU4

[chadsci]

Tell the cop that pulls you over its a motorized bike and its a modded 49cc... like he is going to be able to tell its 80cc. And there is nothing illegal about modded 50cc's

THis is what I plan on doing.

[chadsci]

Are people going to try and build their own frames and forks or what? attain an old steel frame bike and build in a tank and engine?

Derringercycles.com


Im trying to find a steel framed oldr bike that I can cut up or like some have done online. pick up a "vintage look" cruiser at target/walmart on clearance and cut the hell out it and enjoy the nice new other parts. Two weeks ago sams club was clearing out their bikes for around $50-85.

[chadsci]

I was digging around in the back and found my 1957 David Bradley chainsaw. If I remember correctly is 77cc and has a gear reduction box on the side of it.
Should work out nice and fit the bill on the retro look.

[Stephen]

once these are done how do you get them street legal? can you just "tell" them its a 49cc so you dont have to get a motorcycle permit? im just a little confused on the legal obstacles for these

[sprstu]

if it has pedals i think its just a moto-bike and doesn't need to be tabbed? and anything under "49cc" and you don't need a motorcycle license or permit to ride.

[Stephen]

if it has pedals i think its just a moto-bike and doesn't need to be tabbed? and anything under "49cc" and you don't need a motorcycle license or permit to ride.

ok found the ruling


Motorized bicycles must be registered and licensed at an annual tax of $6. No title is required. They may be operated on streets and highways if registered, but the operator needs either a driver’s license or a motorized bicycle operator permit. They may not be operated on a sidewalk except to cross it. The vehicle must have a headlight and, if operated at night, a taillight. If the vehicle is an electric-assisted bicycle an operator must wear a helmet when riding on a street or highway; if it is a motorized bicycle a helmet is required only up to age 18. Operators of motorized bicycles must wear eye protection but operators of electric-assisted bicycles need not do so. Headlights and taillights are required for nighttime operation.

[Ffejtech]

When are you actually planning to start the friday night thing? I have a motorized bike now, built with one of the cheapo chinagirl 2 stroke bike engines,I can bring it by for people to try...
The one thing I have heard rumors of on some of the motorized bike forums is, get a motor soon if you want a 2 stroke one, as of the first of 2012 the govm't is gonna really crack down on ANYTHING 2 stroke powered...

[Audiphile]

What time on Friday night does it start/end? If I can get off work consistantly I might be in. I already have a old bike at home :)

[chadsci]

When are you actually planning to start the friday night thing? I have a motorized bike now, built with one of the cheapo chinagirl 2 stroke bike engines,I can bring it by for people to try...
The one thing I have heard rumors of on some of the motorized bike forums is, get a motor soon if you want a 2 stroke one, as of the first of 2012 the govm't is gonna really crack down on ANYTHING 2 stroke powered...

Great point about the motors and there availability.

I will be putting together a schedule for the Friday night build nights in the next couple of days.

[chadsci]

The shop closes at 6pm. So 6 to 10 or so?

[chadsci]

Sorry for the delay is posting the details up here. It has been a crazy month. My wife has been in Germany or Detroit for work all but five days. Im trying to work out what Friday nights are going to work.

[Stephen]

Don't know how the progress of this is going but checking in to say i finished my motorized bicycle and going to test ride tomorrow!