View Full Version : Anyone built a 2 wheeled version of the spincycle?

11-09-2011, 08:29 PM
im in the process of of finishing up my first spincycle. i really like how its set up and am now wanting to build a second one for cruising, not spinning. i have a design in my head where i could use a pair of bmx wheels in the back as a trike, or 1 bmx wheel in the bike as a 2 wheeler.

just wondering if the geometry and layout of the spincycle will work as a 2 wheeler. i will probably stretch out the wheelbase a few inches.

thanks and love the site and designs. i have the book on its way, looking forward to building more crazy designs.

Radical Brad
11-10-2011, 10:08 AM
It will work for sure, but there will be some wobble when moving fast and pedaling. This is the only drawback to this type of FWD design.


11-10-2011, 02:12 PM
Hi there

Look here :-


They are called Moving Bottom Bracket or MBB for short , if you find any posts by Atom like this :-


He has some downloadable plans for that style of bike.

regards Paul

11-10-2011, 03:21 PM
This might give you a couple idears as well.

I have seen some like this that use a pivot on the return idler.
I like this more than some of the other ones. Especially the way that it comes apart.

11-10-2011, 04:19 PM
thanks guys. that link you have me to bent riders has a ton of info for me. im working on it right now, may be able to ride it tomorrow

11-10-2011, 04:23 PM

11-10-2011, 08:43 PM

11-10-2011, 08:51 PM

here is where i got today.

11-11-2011, 02:36 AM
Hi there

Mine never got much further than this.

It is from the AtomBlaster plans available from the above link , simplified to be more like the Spin cycle at the front.

It is a large frame and so will take any wheel size from 20" to 26" [ as long as the wheels have drum brakes ! ] , my intention was 24" wheels and normal brakes.

I got diverted by building a chopper !


11-11-2011, 02:50 AM
Would like to see a bigger wheel on the back to smooth out the bumps. Think that design puts more weight on the back wheel.

11-11-2011, 09:46 AM
ive thought about re doing the angle like storm birds above. but i do want to be as close to the ground as possible. If it doesnt work out ill throw a pair of wheels on the back and done.

11-11-2011, 11:10 AM
If it doesn't work out or you don't like it, take the crank off and turn it into a kick bike.
I guess this is a big deal in Europe
Growing in America?

11-11-2011, 11:46 AM
i think im going to stretch the wheelbase some to get more of a sideprofile like this machine..

11-11-2011, 12:05 PM
amazing how a project can evolve as you go. started out just building a spincycle for fun, the realizing how out of shape I am (im a health care professional, need to get myself in shape) i figured id build a spincycle with big tires in the back, now its a MBB recumbent.

11-11-2011, 02:10 PM
Hi there

Look up the speculoos recumbent it is the steel forerunner of the Zocra [ the green/black thing above ]

Note the Zocra has a very laid back seat and this will make this hard to ride initially and maybe difficult in traffic.

regards Paul

11-11-2011, 09:56 PM
well decided not to stretch the wheelbase. really wish i had jigs for everything, stuff is ending up a few degrees off here and there.

just got done building a new bottom bracket set up for a 3 piece crank. used a set of bmx forks and welded them to the BB, this is going on the new fork/bb set up.