G/F class lakester in Wichita, Kansas

[tauruck]

https://www.youtube.com/watch?v=h9ODMVdoWXM

Just out of interest, watch this.
He's cool and always willing to help with advice etc.

[ggl205]

Wayno:

Once again, I am saved by my own ignorance (lol).

John

[ggl205]

Just picked up my new Terry Mourer made rear wheels (Podunk). Terry did a superb job tucking rear uprights in as far as possible on 4.125" wide wheels. His machining and wheel design skills are top notch. Take a look at the images and I am sure you will agree.

John

[manta22]

John;

Are those Lola rear uprights?

Regards, Neil  Tucson, AZ

[ggl205]

John;

Are those Lola rear uprights?

Regards, Neil  Tucson, AZ

They look like it, don't they, Neil? Reynard made them for their FF and FC cars.

John

[manta22]

Thanks, John. I hope your car isn't very heavy. FF & FC cars are pretty light.

Regards, Neil  Tucson, AZ

[tauruck]

That's some beautiful machining. Way to go Podunk!!!!.
John, I wish you all the best with your project.

[Rex Schimmer]

John,
Your wheels are gorgeous!!!! Just to check it looks like you have four drive pins, have you checked with SCTA to see if that is a sufficient number? They will not let you run 4 lug wheels I am wondering if they would look at 4 drive pins as the same deal? I would make sure that you have some calculations regarding their diameter and shear load etc just to be safe. As we all know some times the inspectors can get a little touchy interpreting the rule book.

Sure nice wheels!!



Rex

[ggl205]

Hi Rex:

I sent Lee Kennedy and the SCTA tech committee detailed pictures and they signed off on it. They understood that the four pins are drive pins only and not lug studs. The large nut in the center is what clamps the wheel to the axle (center lock). It goes down to 110 foot pounds and is locked with two bronze tipped set screws. I have put e-mail copies of my conversation with Lee in my binder in case this part is questioned.

John

[ggl205]

Thanks, John. I hope your car isn't very heavy. FF & FC cars are pretty light.

Regards, Neil  Tucson, AZ

Neil, I am hoping to bring total weight under 2000 pounds or a little more than twice what a Formula Continental weighs.

John

[manta22]

You'll be running about the same weight as my car, John.

The difference in shear strength between drive studs and wheel studs is significant, The threaded portion of a fastener has lower strength than an unthreaded drive stud. If I remember correctly, the MacLaren Can-Am M8 used 4 drive pins (wheel studs).

Regards, Neil  Tucson, AZ

[ggl205]

You'll be running about the same weight as my car, John.

The difference in shear strength between drive studs and wheel studs is significant, The threaded portion of a fastener has lower strength than an unthreaded drive stud. If I remember correctly, the MacLaren Can-Am M8 used 4 drive pins (wheel studs).

Regards, Neil  Tucson, AZ

You are correct, Neil. Initially, I wanted to fit my hubs with .500" diameter drive pins (same as Can-AM and F5000 cars) but could not find them and making them was not in the cards. What I did find were shoulder bolts. I turned these down to .620" diameter or nearly twice the diameter of those used in a FC car.

Also, with regard to weight; the car will likely come in well under 2000 pounds but it really doesn't matter much to me. I am more concerned about how weight is distributed. I tend to over build my LSR cars but the great white dyno eventually finds the weakest link even if we don't see it.

John

[ggl205]

No where near the quality of an Aircraft Winshield canopy but turned out race worthy. Very little distortion and clear visibility. If it is OK to film tint polycarbonate, I will go ahead and do so. If not, I may make another windscreen in a dark grey tint.

John

[Stan Back]

It's beautiful!

But from this picture, can you see over the front "hump"?

[ggl205]

Yes, but just enough to see the track, line and mile markers. Like Stainless said, forward vision is highly over rated (LOL). But really, vision is good. I was primarily worried about distortions given the nine degree angle. As it turns out, there is very little distortion and quite a bit of clarity. I think a tinted version will be even better.

John