Help for large sprocket and disc brake mount.

[kart_goes_brrr]

So, I have a problem here: I'm building a kart with a copy 212cc engine, and I don't have support for the large sprocket, and I'm trying to put the brake disc in the same support, so any ideas for how to make a support from scratch? Thanks. P.S the images are the parts that I'm using. (I have the centrifugal clutch and the chain so I'm just using the sprocket)

 

[panchothedog]

Almost looks to me like you would need to custom machine a hub. You have two different bolt patterns and need enough space to install a caliper. Is this a one wheel peel or a live axle?

 

[kart_goes_brrr]

Almost looks to me like you would need to custom machine a hub. You have two different bolt patterns and need enough space to install a caliper. Is this a one wheel peel or a live axle?

It's a one wheel peel. Also thanks for the idea but is there any guide or tutorial how to do this? I just got into kart building and I'm lost lol XD.

 

[Master Hack]

"support"? Are referring to a hub? That wheel will not work as a drive wheel. It has a bearing/ hub. I don't see how that combination would work. But l'm not a know it all rodent. Correct me if i'm wrong, please.

 

[panchothedog]

If you don't own a lathe and drill press ( and not pretty skilled at operating them ) making a custom hub is not something you are going to be able to do in your garage. You are probably better off purchasing a unit from a go kart supply shop, even if it means not using what you already have. But I certainly could be wrong. If you have the ability to draw something up ( with measurements ) and know of a machine shop that does small one-off parts, then it doesn't cost to find out for certain.

 

[kart_goes_brrr]

"support"? Are referring to a hub? That wheel will not work as a drive wheel. It has a bearing/ hub. I don't see how that combination would work. But l'm not a know it all rodent. Correct me if i'm wrong, please.

Yeah, I'm sorry it's a wheel hub. I'm kinda new to english vocabulary so yeah I couldn't find a word lmao. Also I thought about drilling holes in the "rim" if that's the correct word so that I can fit both the brake disc and the sprocket. Could this work? Also thanks!

 

[kart_goes_brrr]

If you don't own a lathe and drill press ( and not pretty skilled at operating them ) making a custom hub is not something you are going to be able to do in your garage. You are probably better off purchasing a unit from a go kart supply shop, even if it means not using what you already have. But I certainly could be wrong. If you have the ability to draw something up ( with measurements ) and know of a machine shop that does small one-off parts, then it doesn't cost to find out for certain.

Yeah I have a drill and thought about drilling holes in the rim so that I can mount both the sprocket and the disc. And also since I don't really have access to kart parts because I don't have Amazon or any companies like it in my country, and I can't ship because it will take months to arrive and I have to pay a fee that is TRIPLE the price of the shipped part ‍. So, yeah I'm trying to figure out a solution from scratch. Also thank you!

 

[Master Hack]

Yeah, I'm sorry it's a wheel hub. I'm kinda new to english vocabulary so yeah I couldn't find a word lmao

Thats ok, some of us aren't very good with english either.
you'll be fabbing a bunch of parts then! You can get help here if needed.
Terminology is likely to be a bigger problem than actual language.

Yeah I have a drill and thought about drilling holes in the rim

A "rim" is the thing the rubber tire is sttached to. I don't think you mean to drill holes in that. So we don't know what you mean.
what country are you in?

 

[Denny]

Where in the world are you from? It will help us to make suggestions.

 

[kart_goes_brrr]

Where in the world are you from? It will help us to make suggestions.

I'm in Tunisia (north africa). There is almost no source for go kart parts here.

 

[kart_goes_brrr]

Thats ok, some of us aren't very good with english either.
you'll be fabbing a bunch of parts then! You can get help here if needed.
Terminology is likely to be a bigger problem than actual language.

A "rim" is the thing the rubber tire is sttached to. I don't think you mean to drill holes in that. So we don't know what you mean.
what country are you in?

Yeah I mean the metal where the tire is attached, I thought I could drill holes in there so that I can mount the sprocket with bolts and nuts etc. I don't know if this is possible but would it work? Thanks.

 

[Jacka$$withawrench]

Yeah I mean the metal where the tire is attached, I thought I could drill holes in there so that I can mount the sprocket with bolts and nuts etc. I don't know if this is possible but would it work? Thanks.

I had the same issue you're encountering; mounting a sprocket or a brake rotor to an axle. USE A STORE BOUGHT PART, even if it means buying a new sprocket. I tried to make my own from a mcmaster carr mount and a sprocket and it only ever half worked. Look up concentricity if you dont know it. It means the center of your rotor/sprocket is aligned with the center of your axle. If its not, you'll snap chains, skip links, and burn up your brake pads.

 

[Master Hack]

, I thought I could drill holes in there so that I can mount the sprocket with bolts and nuts etc

Bad idea, for the reasons above. You'll need to make a hub of some sort, if you can't buy one.

 

[ezcome-ezgo]

the metal where the tire is attached

Called a "wheel", also sometimes the tire and wheel together are referred to as a "wheel". Being as precise with language as possible can bridge continental gaps.

 

[Master Hack]

Do you have access to basic a machine shop? Lathe, mill etc?
This can not be accomplished with wood mallets and copper chisels, like they did in Egypt as few years ago.

 

[Jacka$$withawrench]

This was mine. I snapped numerous master links before dialing in the sprocket with screw adjustments. I'll see if i can find closeups of the adapter I made.

 

[Jacka$$withawrench]

 

[Master Hack]

What was the problem causing the links to snap?
Did the sprocket have excessive runout? If so, was it radial or axial runout?
The 4 bolts near the outer edge provide the adjustment?
Please explain.

 

[Jacka$$withawrench]

What was the problem causing the links to snap?
Did the sprocket have excessive runout? If so, was it radial or axial runout?
The 4 bolts near the outer edge provide the adjustment?
Please explain.

The four fine pitch bolts allowed me to align the sprocket perpendicular to the axle/ slight concentric adjustment because they were on an angle. and the welded assembly concentrically mounted it. The links initially snapped because I used copper wire as a master link. Once I broke down and bought the proper tool to break chain and just used a standard pin, I had no issues.

 

[Master Hack]

I used copper wire as a master link.

Only hardened copper wire will work, steel piano wire is mo bedder.
You have access to a lathe?