B.C Wheel

This is my question does anyone have pictures of a home made B.c wheel because i whant to make one,


isn’t it just to make one then? :slight_smile:

I made this set of plates in about 15 minutes at the shop I’m interning at. They are made of some scrap metal laying around the yard. It’s around 3/8-1/2" thick. They have ~15/32" holes punched for the axle, and hang down about 2" from the center of the hole. I rounded the corners of everything on my bench grinder at home, and cleaned off some of the rust with a wire wheel on my bench grinder.

They are about 4.5" wide (bend-to-outside edge) and 3" long (front to back). There is around 3/4" of plate above the hole. I essentially modeled the plates after a pedal I had laying around.

The tools I used were, in order of importance:
Ironworker, used to cut the steel, punch the holes, and make the bends. Cost of tool: $1500-20,000 new. $500-2,000 used, but very rare.

Square, used to check angle of bend in plates. Cost of tool: $10-80 new, $5-50 used.

Bench grinder, used to clean off rust and round sharp corners. Cost of tool: $50-300 new. $10-$50 used. I got mine at a flea market for really cheap. You can also use an angle grinder. They are about the same cost.

Welding/slag chisel/hammer, used to remove slag from a previous oxy-acetalene cut.

You can make your own BC plates with ther tools above (the bench grinder and slag chisel/hammer aren’t absolutely6 neccessary). I would ask around local metalshops to see if any of them will let you learn to use their ironworker. Otherwise you will have to find someone who will let you use their MIG welder. This will be harder to use, since it isn’t easy to keep the plates at a 90 degree angle. The drilling will have to be done on a mill or heavy duty drill press, which takes far longer. The ironworker will punch the holes in about 3 seconds, with about 30 seconds of setup, while a mill will drill the holes in about 1 minutes with about 3 minutes of setup. The bends can be done on an ironworker in about 2 seconds, and setup takes around 15 seconds. Welding instead will take around 30 seconds to weld the material, with about 5 minutes to set it up. The ironworker will cut the steel in about 1 second, with about 5 seconds of setup.

Basically, ironworkers (yes, it’s a machine. it uses a hydraulic ram to press a shear, bender, and punch down. They have strengths ranging from 15 to 200 tons) are the best way, but other ways will work.

I reccomend steel for ease of working, but aluminum is better for weight. Don’t go thinner than 3/8". If the bends can be done in the metal with a bvench vise, then it’s too weak, IMHO.

Did I mention get a really strong bike axle? I used a MTB axle, and I bent it within a day, and I haven’t even used it for hopping.

foot on bc plate.jpg

cool so bassicaly where the frame would hang on is where the plates go. Thats a goood Idea

Sounds like you should as the thread expert to make you some (or figure out where they can be bought).

The BC wheel I posted pics of is exactly the same as bedford bc wheels in it’s basic design.

A major point to stress, since I can’t tell if you noticed it, is that this is NOT a unicycle hub/axle. You need to take the front hub off of a good BMX bike. You can always take the entire wheel, too.

ChangingLinks, I didn’t understand that at all.

I was saying that he should try to convince YOU to make him a set.
You have the expertise and access to the tools.
Or, he could try to figure out where to buy a set.

It sounds difficult to create a set, but that aside, it seems easy to make a B.C. wheel once you have a set.

Ohh, I see.

Brockerfish, I’m going to the shop this afternoon and I’ll see if there’s any more metal laying around to make a couple more sets of plates with. If the guy who runs the shop will let me make a few sets to sell, I’d be happy to make you a set for $15 or 20.

As Gerbil explained, replace “frame” with “fork.” Bicycle wheels are a dime a dozen, and all you need is a front wheel.

I too started out with a basic BMX hub. The axle bent after a while, and my bike shop replaced it with a high-end BMX axle. That one’s still in there, nearly 20 years later. Still the original hub; they just replaced the axle.

I made the rest of mine with leftover 24" Miyata parts, but I think I’ll get a 20" one with a newer, better hub. Zack Baldwin’s just rolls so much nicer than my old thing, it makes it easier to ride!

Are you using a 14mm axle or a 3/8" axle? The 14mm size is the oversized size used on BMX bikes that are used for jumping and other abuse. The 3/8" size is the standard size used on lower end BMX bikes.

The B.C. wheels made by Bedford and Unicycle.com use the 14mm axle size. The 14mm size is bigger, stronger.

Here’s mine. Its homemade. My mom bought me the wheel (I payed her back, I just wasn’t there when money was physically passed over). It ended up costing more then it should of but it was still cheaper than a fully made one. The wheel was like $110 CAD I think. Alex rim of some sort, I’ll get back to you, Snafu Knob Job tire, 14 mm axle. But now that I use it more, I learned to (rolling) mount it last week, I love it. The plates are 4"x4" I believe. I brought in pictures of a couple to my school’s shop class teacher and he had them made up for free by some student. They are kinda slippery when wet, and the paint is coming off cuz they were only spray-painted, but meh. It has already smashed in the bumper of a moving van, and been purposely run over by a truck, but thats a different tale for a different day.


bc 1.jpg


bc 2.jpg

HEHEHEHE so gerelfranklin was right again. I did make an old post about bc wheels so here is the question why doesnt the plate spin with the axle. I know that its a free wheel and when you get on only the wheel spins, but the one i made the pegs I used spin while its rolling so why dont the plates?

I think it is just cause the plates weigh more and have a heavy side that ways it down. I supposed if you greased the axle down enough to be virtually frictionless (ha) it would stop spinning. But really it should stop if you jump on it with your weight evenly. I only tried pegs for a short while when my plates were being made. I know why it was originally called an impossible wheel. My record was like 3 feet and that was just a long fall. The things keep spinning if you aren’t perfectly balanced on it and it will just dump you. It was ridiculous. Tim cut his pegs in half lengthwise to stop the spinning once he jumped on but I still highly suggest you get plates.


I’ve seen a lot of pro BMXer’s use 3/8" axles, instead of 14mm, and 36 spoked rims instead of the normal 48. They are usually weight nazi’s who’ll take any measure to get their bike down to a lower weight, but still retain strength. I’ve seen a lot of street guys riding with european botton brackets, instead of the normal oversized ones. Of course they are professionals at what they do, and usually break themselves, before they do equipment. But it all depends on the brand and quality of the components…either way is the way to go, if you know about the right components, and if you have no problem with spending a little extra cash.