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Nitto report, race update CVAR at Hallett

Posted by John Hamilton

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Nitto report, race update CVAR at Hallett #1
John Hamilton Austin, TX, USA 1965 MG MGB "The Great Pumpkin" 1968 MG MGB GT "Buck" 1970 MG MGB "Dad's Car"	Posted: April 23, 2012 06:28PM Registered: 5 years ago Posts: 1,707

Hey guys, I just got back from an absolutely fabulous weekend racing at Hallett. Turnout seemed a bit low, but this event has suffered from rain and snow for the past couple of years, so I'm guessing some racers were a bit leery of bad weather.

This was my first weekend on the Nitto NT01's and I thought they were great. I did some suspension work between the last event and this one, so I can't compare the tires straight across the board, but I found them to be nice and sticky, yet forgiving when I went in too hot and needed to slide the car a bit. The 914's I was racing with were running the Kumho V710's, and I don't think I was giving anything up in the handling department.

Speaking of changes, I lowered the car 2 inches in the rear with reverse eye springs, minus one leaf, and installed the solid rear bushings as recommended by Dave Headley. This allowed me to remove the Panhard bar that came on the car and was not very well designed. I did get a tiny bit of rubbing, but I was pushing the car very hard, and a bit of 12 ton bottle jack should fix my problem.

I dropped the front end with a set of dropped spindles, replaced the cut down GT springs with some 600 lb. springs, and added the negative camber lower a-arms. With the toe set to 1/16 to 1/8 in toe out, turn-in was super quick, but not uncomfortable once I got used to the new handling.

I ran a 4.55 welded gear this time instead of the 4.30 I usually run and that seemed to help in most places with corner exits. The 7200 RPM chip was almost perfect, I only bumped it going into one corner (turn 7) consistently, and if I shifted into 3rd for turn 1, I would be near the limit and need to shift going up the hill. I still don't have enough HP for the 2 liter Porches or those screaming Spridgets, so I'll take any suggestions I can get. All in all, a great weekend was had by all.

P.S. Got another ride in the Formula Ford, what a blast!

P.P.S. I think I blew a head gasket trying to catch those super fast Midgets and Porches.

If I can't be fast, I'll just be obnoxious!

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Re: Nitto report, race update CVAR at Hallett #2
Speedracer Hap Waldrop Greenville, SC, USA 1967 MG MGB "The Biscuit"	Posted: April 23, 2012 06:35PM Registered: 7 years ago Posts: 20,607

Sounds like you had a great weekend, good to hear the Nittos did well.

Hap Waldrop
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Edited 1 time(s). Last edit at 04/23/2012 06:35PM by Speedracer.

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Re: Nitto report, race update CVAR at Hallett #3
dcharnet Donald Charnetski Grinnell, Iowa, USA 1963 MG MGB	Posted: April 25, 2012 09:49PM Registered: 2 years ago Posts: 950

Hap's, we will want a Nitto Report after this weekend; along with the rest of the Prairie Home Companion narrative report that we all expect and want.

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Re: Nitto report, race update CVAR at Hallett #4
Speedracer Hap Waldrop Greenville, SC, USA 1967 MG MGB "The Biscuit"	Posted: April 26, 2012 06:24AM Registered: 7 years ago Posts: 20,607

John gave me good advice on the Nittos, so I try what he was doing as for pressures, we plan on taking hot pressures and temps every session, I've got a full crew ( thanks crew thumbs up

), so we should get some good data hopefully, and I'll gladly share our findings. One tip John already gave me was tread wear on the right side, and wishing he had rotated during thre weekend, so I think I will try this, leaving the tires on one side for practice and qualifying and then X rotating for the races, I talked to alot of guys abvout this that race on radials in other classes of racing, it tends to be common thing. The Nitto are sided , but not directional, I know guys who say that with the radial tires like RA1s, they even X rotate them even though they are directional, they say after a few heat cycle direction has no bearing, but this is not issue with the NT-O1s anyway. WE x-rotated the slicks in SCCA.

Hap Waldrop
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Re: Nitto report, race update CVAR at Hallett #5
hpmowog Karl Keiger Covington, LA, USA 1959 Austin-Healey Bugeye 1960 Austin-Healey Bugeye 1962 Austin-Healey Sprite	Posted: April 27, 2012 03:10PM Registered: 4 years ago Posts: 2,004

John,

What kind of lap times are the Spridgets (e.g. Herb) turning at Hallett these days?

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Re: Nitto report, race update CVAR at Hallett #6
John Hamilton Austin, TX, USA 1965 MG MGB "The Great Pumpkin" 1968 MG MGB GT "Buck" 1970 MG MGB "Dad's Car"	Posted: April 29, 2012 11:56AM Registered: 5 years ago Posts: 1,707

Jay McClanahan ran a 1:32.593 in the first race on Saturday in a '72 Midget. There were a couple of very fast Bugeyes in the mix running 1:32 and 1:33 laps as well. The 2 liter EP Porsches were running in the 1:33 to 1:34 range. The best I could muster was a 1:34.8. All of the acceleration zones are uphill and I don't have the correct gearset in the transmission. I'm either at the top of one gear or the bottom of the next, never in the sweet spot coming out of a turn. It's killing me, but I need a CR transmission angry smiley

If I can't be fast, I'll just be obnoxious!

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