Euro 3x58 to 4x4 hub adapter.
- Thread starter rc84
- Start date
Denny
Canned Monster
I have never seen anything like that. Maybe others will chime in.
madprofessor
"Loose Cannon Creations"
This link is the closest I've seen to an adapter, and it's just from some 3-bolt pattern Chinese rims to American Racing's 3-bolt racing hubs............
Wheel Hub Adapter for 145/70-6 Wheels with Chinese Bolt Pattern 77mm 1" Axle | 445683 | BMI Karts And Parts
Wheel Hub Adapter for 145/70-6 Wheels with Chinese Bolt Pattern 77mm 1" Axle | 445683 | BMI Karts And Parts
anderkart
Moderator
What diameter axle are you running?
Currently running a 40mm axle. Chassis is a mid 2000's Birel R32.
Thanks. Chinese 3 bolt might be an option. I'll need to do a little more research in terms of available wheel options for that particular bolt pattern.
anderkart
Moderator
Ok, so you want to install 4 on 4" bolt-circle patern golfcart or funkart rims on your racekart then, right?
I've seen that done before, but his racekart wouldn't turn very sharp afterwards, because the taller front tires contacted the frame and front bumper at like only 1/3 of the karts original turning radius. And running additional offset would result in additional stress to the front Spindles and frames Spindle mounts, especially if you'll be riding in bumpy offroad situations...
Front hubs shouldn't be a problem, but finding rear hubs or adaptors are gonna be tricky.
You could make your own adaptors by simply cutting the center out of old racekart rims that perfectly fit your stock 3-bolt rear hubs, then all you'd need to do is accurately drill 4 holes on a 4" bolt-circle pattern.
Or you could check out the Part# 'MCP 140' Rear Brake Hub made for 40mm. axles:
Sold here-> https://www.out2win.com/catalog/brakerrotor.html
Might be a longshot but you could call/email them and ask if these hubs happen to be made for rotors with 4" (or 101.6mm.) bolt-circle patern...
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Thanks for the detailed reply.
My goal is to gain some ground clearance to better suit the back country roads behind my house. Currently running 11 x 8 x 5 in back and 10 x 4.5 x 5 front. With this setup, I have to be pretty careful and have scraped a few times.
My target is around 3-3.5" of clearance. This can be achieved with 15-16" diameter (street treaded) tires. I doubt I will take it off pavement...maybe a gravel road from time to time.
anderkart
Moderator
Cool, I have some new Ideas for you; but I just noticed you said your bolt patern is Euro 3x58. ~ I raced karts for quite awhile and never heard of that size. But I have ran across European racekarts set up for running US bolt-patern rims.
Check out this racekart rim Identification chart I've posted below:
Sounds like you actually have the US bolt patern hubs & rims now... 2.25" converts to 57.15millimeters...
You could confirm this by accurately re-measuring your rims bolt-circle patern with a Caliper measuring tool, plus measure their center hole size to help confirm if I'm right or not. Also confirm the rim centering-lip of your wheel hubs; just to make absolutely sure they perfectly match the 1.75" US center-hole size too.
Also, do you have hubs with 3-bolt rims on the front of your kart now, or are they direct spindle mount rims?
Check out this racekart rim Identification chart I've posted below:
Sounds like you actually have the US bolt patern hubs & rims now... 2.25" converts to 57.15millimeters...
You could confirm this by accurately re-measuring your rims bolt-circle patern with a Caliper measuring tool, plus measure their center hole size to help confirm if I'm right or not. Also confirm the rim centering-lip of your wheel hubs; just to make absolutely sure they perfectly match the 1.75" US center-hole size too.
Also, do you have hubs with 3-bolt rims on the front of your kart now, or are they direct spindle mount rims?
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My hubs are definitely euro.
I believe the 58mm refers to the bolt circle.
Distance between studs is 50mm and center bore is 40mm.
Front setup is a 17mm spindle with a Euro 3 lug hub. So I have more options up front vs the rears.
Easy solution would be to just get some american 3 lug hubs + 6" wheels + 15x6-6 tires.
The reason I'm looking at 4x4 hubs is to expand tire options.
madprofessor
"Loose Cannon Creations"
I'm a big fan of 6" gokart rims because that's the biggest ones that come in split rims, which of course require innertubes, but also do not require fighting with your teeth and nails to change or leak repair tires on a 1-piece rim or getting a tire shop to do it for you.
However, that can severely limit how tall a tire you can get to go on the 6" rims. Broached that subject myself when current kart accidentally got way oversized, and the tallest I could find would have required wider rims than already on the kart, and those found (at MFG) were only 14.5" tall to begin with. That meant getting 1-piece 8" rims and separate 4 x 4 hubs for them (the 6" splits had built-in 1" straight-thru hubs rear, 3/4" bearings front) just to get 16" tall tires.
Ground clearance for my 9" sprocket guard then is theoretically 3.5" with the 16" tall tires, not really a lot. That's why I'm going to make a custom heavy steel bash guard with "ski tips" for the sprocket, no worries about a gnarly grind along a concrete curb.