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Old 09-25-2019, 07:09 PM
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JTSpeedDemon JTSpeedDemon is offline
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Default Where is this in my life?!?!

Clements Racing products sells these:

Quote:
THE 'RATCHET' HUB is designed to be run on the Right Rear of an
oval track kart with higher HP. Animal modifieds, 2 cycles, big outlaw
engines. When the driver backs off the throttle before entering the
corner, the ratchet hub "un locks". This allows the two rear wheels to
rotate at different speeds. Since the right rear tire has to go farther, it
needs to move faster than the Left rear. That's why we ran stagger in the
first place. The use of the Ratchet Hub on the right rear corner will
greatly reduce your dependency on rear wheel stagger. The rear stagger
will only come into play now when you tune the chassis for corner exit
speed. As the driver gets back into the throttle, in or before the center of
the corner, the ratchet hub locks the rear tires together again for a
posi-traction effect, giving full acceleration capabilities to your high dollar
engine. $300.00
http://www.mikeclementsracing.com/accessories.html

Kinda like a bicycle freewheel mehanism, but it's cool. Quite frankly though I could only see these being useful on pavement with a stiff chassis. On a dirt track you'd always want live axle drive.
Just thought I'd share, because this is pretty cool.
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Old 09-26-2019, 08:33 AM
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Those are outlawed in a lot of dirt classes. They free up the bind caused by turning and tire stagger and make the kart faster.
Mike Clements is a very sharp guy with a very creative mind. He’s came up with some pretty amazing things.
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Old 09-26-2019, 12:28 PM
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It would be really cool to see of they could make one for the left side as well, then in theory one could run a live axle kart and then get, in effect, a Posi-traction (live diff axle?).
Unfortunately they're $300 each(), so a Peerless diff would be more economical, but this is really cool!
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Old 09-26-2019, 12:41 PM
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Quote:
Originally Posted by JTSpeedDemon View Post
It would be really cool to see of they could make one for the left side as well, then in theory one could run a live axle kart and then get, in effect, a Posi-traction (live diff axle?).
Unfortunately they're $300 each(), so a Peerless diff would be more economical, but this is really cool!
Nah, I already asked this question and its not a good idea since the powered wheel is always the inside wheel so regardless you will get less than optimal power in a turn with traction. I still think the best bet is a peerless but with two disc brakes on either side connected to an Arduino and some solenoids to selectively lock up the wheels in slip situations.
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Old 09-27-2019, 07:02 AM
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Hmmm, darn.
It's basically a sprag bearing like a Briggs starter clutch, so in theory, it could be possible to adapt a starter clutch to do something like this? Just spitballin, it would probably get destroyed after a few laps.
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Old 09-27-2019, 07:51 AM
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Looks like a spragg bearing with a custom hub.....
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Old 09-27-2019, 08:39 AM
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Yeah that's basically what I said. It would be interesting to see if someone else could make a cheaper version.
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