mag rims

Stephen Buckley · Joined: 18 Jul 2001 Posts: 861

Brandon,

There is no one on this forum or any other karting forum who, from time to time, hasn't had to remove their foot from some body orifice. On that note, I am probably the most avid foot-in-mouth'er. And what makes me mad is that I actually think about it first!

And before you ask... no, I don't oil my belt drive! I only oil my brakes!

[ July 27, 2001: Message edited by: Stephen Buckley ]

[ July 27, 2001: Message edited by: Stephen Buckley ]

Brandon Adkins · Joined: 25 Jul 2001 Posts: 27

i have been thinking about what everyone has said about the rims and what they can do to the kart. I have been talking to my dad and "he" says that a axle has more to do with the kart than any rim could ever do. Titanium axles has more spring, but hold better memory than a steel axle. Mild steel has some what of a spring, but a harded steel axle has less spring. So u see that different axle have different play on different rims. Also i think that Margay karts have the best insite for axles and therefore their karts would and do work with either mags or alluminum wheels.

bird · Joined: 17 Jul 2001 Posts: 147

quote
Quote:

Hopefully this forum will be populated more with people who care about karting than grammar, political correctness and slamming people.

There's nothing politically correct about objecting to every kart originating from my continent being called a piece of crap. It's such a patently stupid thing to say that it must be arising from jealousy or some such issue. I hope Brandon sticks to his word about learning more about PR. As a matter of fact I know perfectly well who he is and that his old man was pretty quick too

Jeff Payne · Posted: Fri Jul 27, 2001 7:57 pm Post subject: mag rims

quote:
Originally posted by Mary-Ann Horley:

There's nothing politically correct about objecting to every kart originating from my continent being called a piece of crap.

That's not what he posted. Quote "if u have a peice of crap european kart then yea it might add more bite and therefore be more hop, but if u have a good handleing american or any other kind of kart that works" End quote.

He didn't say ALL European karts, he said bad euro karts, he also posts "any other kind of kart that works" not excluding euro karts there.

In other words, I take his statement that the construction of the kart may have a large impact on how it responds to the type of material of the wheels.

Howie Idelson · Posted: Fri Jul 27, 2001 10:09 pm Post subject: mag rims

Go get 'em Brandon.... tell it like you see it. Ditto on your dad also, He's the man. Say Hi from me.

Howie Idelson

Jeff Payne · Posted: Fri Jul 27, 2001 10:23 pm Post subject: mag rims

quote:
Originally posted by Brandon Adkins:
I think everyone is a little wrong, i think the mags make for less grip bz they dont alow the tire to get as hot as aluminum wheel, so there for if the tire dont get hot then there would not be as much hop. Also every kart is different so everyones situation is going to be different, if u have a peice of crap european kart then yea it might add more bite and therefore be more hope, but if u have a good handleing american or any other kind of kart that works, then i would say less hope bz of stablization. Hope i made some sense if not your loss.

Thanks Brandon. I hadn't thought of it the way you described. When I went from some alum. wheels to mag, I started to pick up rubber and I didn't know why. Now it make sense as the mag didn't heat the tires up as much. I ended up moving the wheels in, it hooked up better and stopped picking up the rubber on the track.

Hopefully this forum will be populated more with people who care about karting than grammar, political correctness and slamming people.

Stephen Buckley · Joined: 18 Jul 2001 Posts: 861

Just a casual note to Brandon:

When and if the time comes for you to pursue a sponsor(s) in your progress towards a position in professional motorsports, part of the game is public relations. I would think it would be a sad thing if you missed a chance to be a factory driver for CRG, Topkart or any non-American chassis maker for making some unthoughtful and disparaging remarks. The karting realm is quite small and people tend to have long memories. On that note, may I suggest that you start with thinking about what you say in public and what consequences it may have on your development. May I also suggest that you dump the street rap, learn the English language and study up a bit on your writing skills. These things will eventually open a few more doors in the motorsports realm for you. You obviously have very good driving skills. It won't hurt you to augment them with a bit of restraint and PR skills.
Good luck to you.
S

[ July 27, 2001: Message edited by: Stephen Buckley ]

Brandon Adkins · Joined: 25 Jul 2001 Posts: 27

I would just like to say a few things reguarding everyones comments to what i have said. I really did not mean to affend anyone or make any one mad by what i said, i agree with those people that say that i should be more careful with public relations, bz saying stuff like i did would deffintly now help. Also i am sorry about my spelling, some is just messing up typeing and other is just internet slang, so again i am trully sorry for afending anyone.

Thanks,
Brandon Adkins

P.S. I am glad some pepople know where i am coming from though

Steve Willis · Posted: Sat Jul 28, 2001 5:29 am Post subject: mag rims

Mag vs. Aluminum: You decided!

The co-effience heat transfer of Magnesium is greater than the cast aluminum wheels. In other words the Mag will absorb heat faster and disperse the heat at a higher rate then the cast aluminum wheels.

Material Strength: Mechanical properties of Magnesium have a higher Ultimate Strength (the point in which the material will brake) and Yield Strength (the point from where the material will actually start moving until it hits its Ultimate Strength) then the cast aluminum wheels in the As Cast condition. Example: Aluminum Foil has a low Ultimate Strength and a low Yield Strength which allows it to flex and bend before braking. A pencil on the other hand has a high Ultimate and Yield Strength which means that the pencil will brake before it bends vary far. Which means that the Aluminum wheels will flex at less pressure than the Magnesium. This is why Magnesium wheels crack at a higher rate then the aluminum wheels. Aluminum wheels will tend to bend on impact where as the Magnesium wheels will fracture. (Yield Strength)

Each has it’s application.

Mike Goebel · Posted: Sat Jul 28, 2001 5:51 am Post subject: mag rims

Well said Steve.

I think people are allways assuming that the Mag wheels are lighter because the density for mag is less. This is a mistake because I have weighed spun rims and found them to be lighter. See the amount of material used is what gives the end weight and cast Mag rims use more material than spun aluminum wheels. Also you can have a heaver rim that will have less inertia than a lighter one. Its how the weight is placed on the rim. The farther out radially the weight is the slower acceleration the wheel will have. As far as grip I believe in testing different rims to confirm any assumptions you may have. This is an expensive experiment though.

Mike G.

Don McGregor · Posted: Sat Jul 28, 2001 9:31 am Post subject: mag rims

Maybe I'm being a bit simplistic about this, but I've found that trying things on a kart is about the best way to tell what works. At the Pats promoto round we had such a bad hop with magnesium rims that the kart almost tipped over on several occasions.After trying to solve the hop every way we could think of, we switched to good old Douglas Spun Aluminum wheels and the Kart was loose. Conclusion: Magnesium wheels provide far more grip. End of story.

Don

Chuck McCue · Joined: 17 Jul 2001 Posts: 2945

Quote
"Maybe I'm being a bit simplistic about this, but I've found that trying things on a kart is about the best way to tell what works."

Absoulutly true. When you test for yourself you find out what works for *your* kart and *your* driver. One constant in racing is there is never a constant.

"Conclusion: Magnesium wheels provide far more grip. End of story."

End of story? I think not. We tune with 4 styles of mag wheels and they vary drasticly from soft to hard. Providing various amounts of grip and dynamic actions and reactions.

CM www.racearsenal.com

Pete Van Ginkel · Posted: Sat Jul 28, 2001 7:25 pm Post subject: mag rims

"End of story? I think not. We tune with 4 styles of mag wheels and they vary drasticly from soft to hard. Providing various amounts of grip and dynamic actions and reactions."

Do you know how depressing that statement is? Who has that much money? Even if you had the money, who wants to spend all of their time testing every little detail? What`s next, different helmets for different tracks? Get a clue guys. This is supposed to be for fun. 99.9% of you that are planning on racing F1 or CART won`t make it.
Go ahead and jack up the cost of being competitive and see what it does for Karting.
Pete
Ps. I was probably wrong on my math. 99.9% would be 1 out of a thousand. It should be 99.999%. That would be 1 out of 100,000.

[ July 28, 2001: Message edited by: Pete Van Ginkel ]

Tommy Smith · Joined: 18 Jul 2001 Posts: 12 Location: encino, ca

So.....who manufactures MAG wheels........ and how can I tell if one brand is stiffer than another? Is there a rating of some kind? How would I know besides putting each brand on a kart and running them?

Chuck McCue · Joined: 17 Jul 2001 Posts: 2945

There are may manufacturers. Here are some examples.
Soft - Righetti Ridolfi, Smooth no ribs.
Med. - SKM, with ribbing.
Hard - Freeline, Some of the stiffest we have tried.

CM www.racearsenal.com