Air Jacks, Centerlock wheels..?

[chimazo]

On Forgeline centerlocks. Link to product - http://www.forgeline.com/customer_ga...roduct_key=109

[Anthony @ LG Motorsports]

Forgeline does do a center lock wheel but like some of the older Corvette's in the 60's it is a bolt on adapter that sits on the rotor hat, and uses a special lug nut as the drive pins for the wheels. If you are looking for lightweight....I wouldn't do it as it is going to add about 4-5 lbs a corner. "real" race cars that use center locks have a special spindle and wheel bearing assembly which is different than the bolt on hubs your car uses.



This is a center lock we did for a Corvette ZR1 from Forgeline




This is the front upright for our ALMS GT2 Corvette that uses a center lock



As for the air jacks...



There are a few different kinds out of them out there, given the weight you are going to need four of them to lift it. You will have to weld the cans onto the frame and brace the hell out of them because they can not move. You will need safety stands and depending on the manufacturer a nitrogen bottle(s) at the wall with at min. 200 psi of pressure to lift the car. You have to plumb it all, if you want quick release it will need blow off valves...the quick fill wand and port someplace on the car to hook into. We had ours under the fenders. Figure to do it right, you'll have approx $6-7000 in parts before install with lines, fittings, stands, wand, slow fill, quick fill, blow offs....so yeah not cheap.

[Moreno1]

Originally Posted by AG1LE

Custom hubs, or OE hubs with a conversion kit?

A combination of OE and custom. It requires dissembling the stock hubs and machining a new center section.

[AG1LE]

Originally Posted by www.MorenoMotorsports.com

A combination of OE and custom. It requires dissembling the stock hubs and machining a new center section.


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Amazing work, as usual

[pat_t]

Originally Posted by www.MorenoMotorsports.com

A combination of OE and custom. It requires dissembling the stock hubs and machining a new center section.

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Yes, nice work... this looks a much better way of doing it than bolt-on adaptors.

So now you've done the hard work couldn't you fit a wide range of centrelock wheels to that hub, what limits it to Forgeline wheels?

There are (literally) stacks of used centrelock wheels on ebay over here (UK):


Just need to find the most common fitment, I imagine it might be a Porsche size...

[pat_t]

Originally Posted by Anthony @ LG Motorsports

As for the air jacks...



There are a few different kinds out of them out there, given the weight you are going to need four of them to lift it. You will have to weld the cans onto the frame and brace the hell out of them because they can not move. You will need safety stands and depending on the manufacturer a nitrogen bottle(s) at the wall with at min. 200 psi of pressure to lift the car. You have to plumb it all, if you want quick release it will need blow off valves...the quick fill wand and port someplace on the car to hook into. We had ours under the fenders. Figure to do it right, you'll have approx $6-7000 in parts before install with lines, fittings, stands, wand, slow fill, quick fill, blow offs....so yeah not cheap.

Yep, I can sort the bottle, plumbing, lance etc easily enough.

any suggestions for locations for bracing in the jack tubes?


rears can probably go at the red points ok. Fronts I'm not sure if there would be space at the red points? Blue ones might be better? Going to have to wait until I have the car to measure up before finalising any plans by the look of it.

DTM M3 from a couple of years back had a big V8 up front and looks like the front points are fairly close together...

[Moreno1]

Originally Posted by AG1LE

Amazing work, as usual

Originally Posted by pat_t

Yes, nice work... this looks a much better way of doing it than bolt-on adaptors.

So now you've done the hard work couldn't you fit a wide range of centrelock wheels to that hub, what limits it to Forgeline wheels?

There are (literally) stacks of used centrelock wheels on ebay over here (UK):

Just need to find the most common fitment, I imagine it might be a Porsche size...

Those are not our hubs, but hubs made by Pratt and miller for their C6RS corvettes a few years back. We are looking to do something similar

[Anthony @ LG Motorsports]

Originally Posted by Moreno Brothers

A combination of OE and custom. It requires dissembling the stock hubs and machining a new center section.


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SKF was going to do that some time ago, and from what I understand have all of the drawings and work done to do them. They were telling us, bearings were going to be approx $1400-1700 ea and it would look similar to that.

I don't know if they have ever done a run of them yet or not.

[Anthony @ LG Motorsports]

Originally Posted by pat_t

Yep, I can sort the bottle, plumbing, lance etc easily enough.

any suggestions for locations for bracing in the jack tubes?


rears can probably go at the red points ok. Fronts I'm not sure if there would be space at the red points? Blue ones might be better? Going to have to wait until I have the car to measure up before finalising any plans by the look of it.

DTM M3 from a couple of years back had a big V8 up front and looks like the front points are fairly close together...

1. They need to be mounted to the frame, not knowing what the BMW looks like with it's body off...hard to say but I'm sure it was mounted along a frame wall.

2. Get them as close to the axle center lines as you can to make sure it's stable when you get it up in the air.

3. Need to be mounted were the air lines can be routed out of the way of moving parts and so they would be safe as can be in the event of a blow out, fender bender.....so you can actually use them during the race if people start playing bumper cars.