what to soak new bearings in?

Scott Woeckener · Joined: 20 Mar 2005 Posts: 33

Mike: Surely you DIDN"T see that on our site. 40mm are 205.00 each and 50mm each are $225.00....???????????? The Silicon Nitride balls cost approx $15.00 each...do the math.
Now the engine bearings are $150 for the Set of 2.

Scott www.northstar-ceramicbearings.com

Tom Jensen · Posted: Mon Apr 04, 2005 5:15 pm Post subject:

Andrew Kidd · Posted: Mon Apr 04, 2005 6:09 pm Post subject:

The bottom line is that the money you might be able to spend in bearings would be better spent in another set of tires (or multiple sets of tires) to test on. A tenth of a second is practically driver error; unless a machine is driving that kart, you will not see the gains from expensive bearings.
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Scott Woeckener · Joined: 20 Mar 2005 Posts: 33

Your absolutely right! On the chassis alone...If you could only lower your laptimes 1-2 tenths per lap...hummmmm ...20 lap feature...Wait!
That's 2 seconds less than my NORMAL expert driving time. Now let's talk about adding them to your engine at higher Rpms, much more Hp and greater power curve than your competition. That's a whole different discussion.
Scott northstar-ceramicbearings.com

Andrew Kidd · Posted: Mon Apr 04, 2005 7:14 pm Post subject:

No, it's not. Jetting errors can account for the amount of power gained from ceramic bearings. If your motor came from the factory better than Joe Schmoe's motor, that could more than make up for the gains. You cannot tell me that you can gain a meaningful amount of power from a motor just from adding ceramic bearings.
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Rick Blood · Posted: Mon Apr 04, 2005 8:39 pm Post subject:

Wow, the kidds catching on.
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Mike Goebel · Posted: Mon Apr 04, 2005 9:18 pm Post subject:

Go get em Kidd. Bears smearings.

Mike G.

Tim Doll · Posted: Mon Apr 04, 2005 9:59 pm Post subject:

Peter Stolper · Joined: 04 Jun 2004 Posts: 130

Jim:
See, Ive been away for 4 days and this is still going on!!

Part number is on the side of your bearing, go to local bearing supplier and ask him (or her) for a sealed version, mine are SKF made in sweden, and they aint no jewels! (they are not ceramic either)

Quinn:
out of interest, What conclusions have you come to? Please Confused

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Michael Brookes · Posted: Tue Apr 05, 2005 11:16 am Post subject:

Paul Clifton · Posted: Tue Apr 05, 2005 3:03 pm Post subject:

IF I ran a TaG class sprint kart road racing, I would run these rear axle bearings, and run them in my Nor Cal Leopard motor. The money I'd save NOT running front brakes would pay for these bearings, and I'd have a cool helmet too. (All sarcasm implied is intended) Razz

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Charles Frear · Posted: Wed Apr 06, 2005 9:17 pm Post subject:

To Scott, I admire your passion about your products. I would like to clarify something. In one of your earliest post you stated that when a bearing heats up the balls get tighter in the metal seperator because the individual pockets get smaller due to heat expansion. I believe you also stated that the space between the ball bearings and the inner and outer races gets tighter because as the races heat up they expand so as to reduce the space between the balls and races.
I was a jet engine mechanic for eight years and my primary job was to re-assembled a 500 pound reduction gear box that contained dozens of various type bearings and gears. These bearings were of a far higher load and technology than any kart will ever see.
When ever you heat say the inner race of a bearing, both the I.D. and O.D. will expand. When ever you heat an outer race both the I.D. and O.D. will also expand. The same would apply to the ball bearing seperator, both the I.D. and O.D. of the pockets will expand. The same applys to the balls the O.D. will also expand with heat.
What to make of these facts about heat expansion?
So the now larger ball will ride on now the larger O.D. of the inner race. Inside of now a larger I.D. of the outer race. Being that the outer race is bigger than the inner race it will expand at a greater ratio to allow for the larger ball bearing and larger O.D. of the inner race.
Which as long as the bearing was properly designed would take these facts into account.
I would like to think all of these laws of physics applys to go-kart bearings as well.
From a highly experienced source on this subject.

Charlie Frear, DeepSeat Inc.

Tom Jensen · Posted: Wed Apr 06, 2005 9:46 pm Post subject:

If some of you lard butts got some excercise and lost 10 pounds you could pick up a few tenths without having to spend the $700. I'm just saying. No names.
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