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I'm upgrading a 8hp Robin motor to a HF VTwin 670cc motor, the shaft is now 1" instead of the Robins 3/4. It has a TAV30 torque converter on it now. Can I but just the Driver/Driven Clutch side of the TAV40 that is 1" and keep the reset of the torque converter the same?

I have to add a fuel pump to my build and do not want to drill holes in the frame. What options are there for mounting a Walbro pump? Can they be mounted vertical vs horizontal? Or does that matter? Thanks in advance.

Is there a piece that goes on the Tecumseh HS40 engine that allows you you connect the torque converter guard to the engine end? If so, can anyone describe it? I see how it attaches on the lower end to the engine mounting plate but not sure of how it hooks to the engine. Thanks

Finally got my 2hp engine and carb from the guys on this site. I have never seen a airvane setup so I removed the cover and noticed that the vane is bent on the outward edge. Is this normal? Also the spring is broken and any idea where to find one? Thanks Ron

So cool to find a website dedicated to this. I am completely new to this OldMiniBikes thing and here is how it started. We were in the back yard last weekend and this kid that my son knows comes rolling into our backyard on this thing. I was like what is that he says I don't know I just bought it off...

Hey yall. Ive got a non hemi 212 on my mini bike and Im getting parts up, dont want to go real crazy but ive got billet fly wheel, mod2 cam, 26lb springs, jetted carb, cone filter, and a nice header. What rod from ARC should i use the standard or plus 20? not planning on doing any head work or...

Hey guys. Looking for a clean solution for mounting foot pegs to an Azusa project bike. Has anyone used a handlebar mount like this? I hear a lot that the cheap clamp mount that come with the bike suck.

Can you replace the spark plug wire on the coil or do you have to replace the entire coil?

Ok finally got the mtd running today and it runs strong and has a lot of low end torque but it's not shifting. This is my first experience with a torque converter so I have no clue what's going on or even where to start. Thanks bryce

Hello folks, We are looking to re-power our Whirlwind. In place of the H40 Tecumseh, we are looking at Honda GX160 or Gx200 power plants. The 4 hp Tecumseh would easily pull the front off the ground. We would like to supply the same amount of low end torque to this machine as the old power...

I have a UT2 head I am working on with the valve seats for the 26mm intake and 24mm exhaust. I am going to order a 27mm intake tomorrow but am unsure how deep to have the seat honed out. I know to hone the whole seat larger but how far in to the bowl do I go? I know to machine the whole valve...

I'm uncomfortable asking this and I hope not to offend anyone (The show and collect people). I was wondering what you folks do with your minibikes? Here in Maine there's not a lot of suitable places to ride them? At least the small wheeled single speed rattle clutch types. The trails are far to...

Hi, For my Cast iron HH70 build I had to purchase a new air cleaner assembly, I decided to go with a kit I found on Ebay shown in the picture below. It has a cast iron elbow and paper element that some of the cast iron industrial "X/L series" Tecumsehs' came with. This means that the crankcase...

Does anyone have a photo of the original mirrors offered by rupp as an accessory?

Does anyone have a '72 Prowler or RamRod that could verify that the kickstand on the bottom is correct for 10" tire bikes? The one on the top is off of a 71 Prowler.

I'm not sure I'm in the right section, but I will ask the question anyway, please move it to the right section if need be. I am building a go kart out of left over pieces I have lying around. I am having a senior moment and want to be sure I have the pulleys going in the right direction before I...

Going to look at this this weekend, Can someone please tell me what exactly I am looking at. Thanks!

Just picked up a lighted h50. What does it put out 12v or 6v. What to buy a headlight and not sure about voltage. Thanks.

On a TT500, if you have a foot brake for the rear, what side should the front brake lever go on the handlebar? Normally the front brake would be on the right side (throttle side), but since the original brake lever for a TT500 had an embosment for the mirror, which you would want on the left...

Hi all, I'm new to the forum. I just picked up a Wards T 555. It's just a rolling chassis. I'm planning on mounting a predator 212 from Harbor Freight. Also, I'm thinking about a Comet 20 torque converter. My questions are, does anyone know what size key way the Comet driven pulley has? My...