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chaparral Reader
2/15/12 6:14 p.m.


Are the corners between the hoop bolt holder face and the front face of the center radiused?

emodspitfire Reader
2/15/12 6:27 p.m.

Uh....that wheel center is a very elegant design. If you do a volume query from the CAD system, I think you will find that the weight is so low in AL that the MG quest is a maybe not worth the trouble ??


unevolved Dork
2/15/12 8:38 p.m.

Yeah, the issue comes down to stiffness. It's tricky justifying it, I'll definitely concede that. We're pretty strict about not doing things that aren't clearly worth it, which is why we've nixed CF A-Arms and wheel barrels. These are on the back burner, so to speak. They're definitely not a critical path item. It's a fun exercise in part design, and if you're going to save weight, it's a great place to save it from.

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
2/15/12 9:46 p.m.
unevolved wrote: Here's a picture of what we're making. I'm not sure that would work for us, although that's an interesting idea.

That reminds me of something...

I want to go back to school just so I can do FSAE.

chaparral Reader
2/15/12 10:27 p.m.


Talk to Dr. Make McDermott at Texas A&M U.

PM me for his number.

unevolved Dork
2/15/12 11:10 p.m.

I don't think he was serious.

chaparral Reader
2/16/12 12:17 a.m.

I'm not saying it would be possible or practical for him to do it, but... who knows?

chaparral Reader
2/16/12 12:18 a.m.

How stiff is that wheel center under acceleration or brake torque?

Does it "flop over" under combined brake/steering forces?

unevolved Dork
2/16/12 12:24 a.m.

That's classified.

Keith GRM+ Memberand SuperDork
2/16/12 10:54 a.m.

I'm not going to discount the possibility of heading back to school someday. If I do, FSAE will be a factor for sure.

unevolved Dork
2/16/12 2:26 p.m.

It's worth every hour of sleep deprivation.

Twin_Cam SuperDork
2/16/12 6:39 p.m.
ReverendDexter wrote: And here I am thinking that magnesium would be a horrible metal to make a bullet out of...

Me: "Magnesium doesn't weigh anything. That's not the point of a bullet. They're meant to be heavy!"

Then I saw your reply, and LOL'd.

RXBeetle Reader
2/16/12 7:23 p.m.
unevolved wrote: It's worth every hour of sleep deprivation.

It's more like the sleep deprivation is so bad you just forget how much sleep you lost. The victories, even the small personal ones, are addictive enough to cause friends and family to be concerned for your well-being.

Nice lookin wheels and uprights, where is the camber adjustment? See you in Brooklyn and/or Nebraska, we'll be at both (Oakland University)

unevolved Dork
2/16/12 8:50 p.m.

We make camber adjustments with shims at the inner attachment points. It's a little unorthodox, but it saves precious ounces and we've run that method for years with good results.

ETMAGS New Reader
5/27/14 10:31 a.m.

Did you get your mag wheel center made? We have had the best preformance for small centers by doing near net shape castings and then machining them, but for larger wheels,ie.19", we did forged a disc of near net profile them machined. We used aluminum rim barrels and Ti hardware. Call if you have questions. Is the upright a machined Mag part? scott

yamaha UltimaDork
5/27/14 11:10 a.m.


bentwrench Reader
5/27/14 3:53 p.m.

Get plate and trim off the corners and use that material for other parts = not wasted....

EastCoastMojo GRM+ Memberand Mod Squad
5/27/14 7:42 p.m.

FYI -This thread is over two years old.

unevolved Dork
5/28/14 10:14 a.m.

For closure's sake, here's how the wheels looked when completed:

AngryCorvair GRM+ Memberand UltimaDork
5/28/14 4:09 p.m.

they look blurry.

unevolved Dork
5/28/14 8:16 p.m.

It's an advanced new machining technique. Lower mass, better boundary layer adhesion.

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