fmcokc

The argument would be that they are actually a performance deficit due to the fact that they are heavier than stock. Thus they increase the Unsprung weight.

Or you could just run AER or WRL.

emilio700

iTrader: (3)

The Miatahub also has significantly more drag than a blueprinted OEM style hub. OTOH, it also has virtually none of the the deflection the OEM have. That means whatever camber you dial in you actually keep while the car is on track. But yeah, it's shortsighted of Champcar to ding teams for them.

Wink

We were the team to be assessed points for running them. I can understand where they're coming from though, I did not claim them as a non OEM part, which the BCCR says you are to do. In the end it didn't effect the out come of the race.

I can tell you, they will not be coming off the car. The surface on the goat ranch at Harris Hill is beyond bad. There were two complete hub failures on the weekend, and P1 went through 3. In impound their right front was being held on by the brake caliper.

@jpreston & @slammed200 have built a hell of a piece, we're happy to have them on our car.

k24madness

iTrader: (6)

While the future of my car still remains uncertain I have opted to pull the trigger on a set of these hubs anyway. The potential failures are well documented and horrific to imagine at speed. With all the knockback I am getting I have to believe the hubs are deflecting a lot under the grip of the 245/580/15 S80's. It's only a matter of time before that translates into a crack/catastrophic failure.

compaddict

I ordered a set for our CSP car. I have had a run of **** breaking lately...
Vince

Wink

***ChampCar Endurance Series Update***

2019 National Championship from Charlotte Motor Speedway was this weekend. We were in attendance, and I was informed in the tech line that the decision from last month of the assigned point value for these hubs had been changed, during the board meeting that morning. Points for the hubs dropped from 20 to 5 for the pair. Huge win!

Going 130+ through the banking was scary enough, without worrying about a hub failure. I'm still glad to be running these on the car. Big thanks to Justin for the work he did with the series.

jay524288

iTrader: (1)

Thanks for posting that. I just emailed ChampCar's technical director to confirm and he said this new ruling will stand through the rest of the year. It could change in 2020, but he doesn't think it will.

We're seriously considering these hubs now. At the H2R race, a hub bearing failure cost us first place on Saturday and we had a total of 3 failures for the weekend.

Midtenn

iTrader: (15)

Just curious. Are these off the shelf new or used hubs? Are they being repacked with quality grease? Proper machining?

BMWidmer

They are billet units that use a cartridge style bearing. Expensive grease is apparently no longer needed and i would say that they would not have come to market with the support they have if the machining was subpar.

ooja3k

iTrader: (1)

I thought he was asking about the new ones too until I re-read his post. I think he's asking about all the failed ones that were referenced

jay524288

iTrader: (1)

To be clear, all of them were bearing failures and were caught before anything catastrophic happened, like losing a wheel.

All had what looked to be NTN bearings with the metal dust shield. I don't have an reason to believe they were not NTN, but you never know nowadays. All of them were non-ABS hubs and none had excessive machining. In other words, they looked they were hubs that should be good.

Hub 1: The hub was probably from Moog. I had repacked it with Amsoil Dominator grease. It had 10-20 hours on it before the race, and we detected play in it in our first pit stop at 2 hours, sent the car back out for another hour before replacing it

Hub 2: Also probably from Moog. I had repacked it with Amsoil Dominator grease. It had 10-20 hours on it before the race. At the end of the race (8 hours) we detected a tiny amount of play in it

Hub 3: Hub came from a vendor who races Spec Miata. He had repacked it with what I think is Redline CV2, but I'm not positive. Was brand new at the start of Sunday's race. At the end (7 hours), there was a ton of play and I could wiggle the nut with my fingers. (The claim that it was only held on by the brake caliper was an exaggeration)

I don't have hard data to back it up, but it appears that my team has more hub problems than the other Miata teams we've raced with. I don't know why that is. Our car is very light, so we carry more speed through corners, we might be more aggressive about hitting curbing/dropping the inside wheel on corners, or maybe I don't repack the hubs correctly.

compaddict

Get curb feelers!
(insert smiley face)
Vince

Midtenn

iTrader: (15)

Thanks. I'm just curious. We typically don't let a set of hubs go longer than 14hrs without a fresh cleaning and repack (basically after every race weekend). We've got probably 7-9 weekends on a set of OE MSM hubs that we've repacked with CV2 after a close inspection. We try to only use curbs when they are needed, but we have even had a few side-to-side hits with these hubs. They are likely to be replaced this year with Centrics just because (they'll be repacked and used as spares)

dc2696

iTrader: (2)

I'm also on Team I KILL HUBS

On the bright side I can feel the difference between hub failure and bearing failure really well now. (Mazdaspeed hub shown failed)


And if anyone needed a reminder, replace hubs that get touched.

compaddict

jay524288

iTrader: (1)

I've had lots of problems with hubs and bought a pair of hubs from Justin (slammed200). We just raced at Indy and had no issues with the hubs. I checked them after the race and there was no play at all. I'll call that a success.

I got to meet Justin at the race and he's a super nice guy. When we lost a brake caliper on Saturday, he offered to go back to his house, pull the Wilwoods off his Miata and let us use those. He did that after he spent 4 hours replacing the engine in the car he was racing.

fmcokc

This last weekend we raced at Road Atlanta in the WRL race. We had a rough weekend on the suspension pieces but the hubs were the one thing that survived. 16 hours of relentless pounding the really rough gators in turn 10A and 10B without a second thought about the front hubs. Ours were tested by Justin earlier this year and found to be in great shape after last years season.

Wink

We've got about twenty four track hours on ours. All good so far.