fixing go cart for next generation

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warmstrong1955
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Re: fixing go cart for next generation

Post by warmstrong1955 » Mon Mar 30, 2020 2:12 pm

Use axial ball bearings, instead of plain old radials.
Set up to zero backlash, or a light preload. Use a castle nut & cotter pin, or even a nylok or stover nut. If there is adequate threads on the spindle, you could double nut it. Two jam nuts may fit, and would be adequate.

Bill
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curtis cutter
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Re: fixing go cart for next generation

Post by curtis cutter » Mon Mar 30, 2020 3:01 pm

Since these are the bearings it uses I think your suggestion of a double nut Bill is the way to go. Absolute minimum pre-load and just leave it at that.
https://pgnbearings.com/products/99502h ... gJZO_D_BwE
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warmstrong1955
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Re: fixing go cart for next generation

Post by warmstrong1955 » Mon Mar 30, 2020 3:18 pm

That is just a radial ball bearing, so you would want zero preload. Take the axial play out of it, and call it done.
I really don't see a problem with those.....on a go-cart. Not going to see a whole lot of axial load, assuming it's not a high performance type.

Bill
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Glenn Brooks
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Re: fixing go cart for next generation

Post by Glenn Brooks » Tue Mar 31, 2020 2:11 pm

Iam with the others, how many decades did the cart run around the track with this design? I would duplicate the existing design and try it out. Likely there is an appropriate range of torque you should apply. The bearings will know how to work at the proper pre load.
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Glenn Brooks
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Re: fixing go cart for next generation

Post by Glenn Brooks » Tue Mar 31, 2020 2:13 pm

Iam with the others, how many decades did the cart run around the track with this design? I would duplicate the existing design and try it out. Likely there is an appropriate range of torque you should apply. The bearings will know how to work at the proper pre load.
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duckman903
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Re: fixing go cart for next generation

Post by duckman903 » Thu Apr 02, 2020 11:52 am

The proper way to do this is to put a spacer in between the bearings, crank it as tight as you want and not hurt the bearings

Harold_V
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Re: fixing go cart for next generation

Post by Harold_V » Thu Apr 02, 2020 5:57 pm

duckman903 wrote:
Thu Apr 02, 2020 11:52 am
The proper way to do this is to put a spacer in between the bearings, crank it as tight as you want and not hurt the bearings
I agree.
A friend, a few years ago, asked me to take a look at his Jet bandsaw, which kept losing bearings on a given shaft. Turns out they had made the saw without using a spacer (or it was inadvertently left out), so it was easy to over tighten the nut, loading a radial bearing in a way it shouldn't be loaded. A simple fix, once I determined the length of the spacer.

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curtis cutter
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Re: fixing go cart for next generation

Post by curtis cutter » Thu Apr 02, 2020 8:17 pm

duckman903 wrote:
Thu Apr 02, 2020 11:52 am
The proper way to do this is to put a spacer in between the bearings, crank it as tight as you want and not hurt the bearings
I think this is what I am going to do. Especially when it is going to be ridden by young boys with access to tools to take stuff apart and learn with. :)
Gregg
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Bentworker
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Re: fixing go cart for next generation

Post by Bentworker » Fri Apr 03, 2020 11:24 am

Just curious- are the wheels the 2 piece aluminum tri AZUSA ones that have been made forever?
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curtis cutter
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Re: fixing go cart for next generation

Post by curtis cutter » Fri Apr 03, 2020 3:26 pm

Bentworker wrote:
Fri Apr 03, 2020 11:24 am
Just curious- are the wheels the 2 piece aluminum tri AZUSA ones that have been made forever?
One piece hub and two piece split wheel that bolts to hub.
Gregg
Just let go of it, it will eventually unplug itself.

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