Updated comments on Tourist Trophy series:

Cars:

Cobras–Most of the Cobras that ran were original 289 roadsters.  These cars ran with the  removable hardtops, both in period and Revivals.  The Cobra Daytona Coupes ran in 1964.  3D printed chassis are available for these cars.  A MRRC Cobra is listed in the rules, but this may be in error.  The only MRRC Cobras that I am aware of are 427 Cobras, which are not eligible.  If anyone knows of a MRRC 289 Cobra, please let me know.

Aston Martin–There are a number of eligible cars; all are resin and will likely be heavy.  Most of these are set up to use an adjustable chassis, which is not particularly race competitive.  Adapting a more competitive chassis would be advised.  These would likely require effort to be competitive.

Corvettes–only C1 and C2 Corvettes are eligible; Grand Sports are not.  I do not have a Ninco C1 and do not  know what issues there may be.  There are some 1:32 C1 and Stingray static kits available; unknown issues.  Carrera Stingrays are also an unknown quantity.

Cheetah–As in previous posts, the Cheetahs are marginally eligible, unless it is discovered that the  Carrera Cheetahs are larger than 1:32.  The vintage Strombecker  Cheetah would be eligible, but  it is a pretty small car.

Porsche 904–The vintage Monogram is eligible, but it is a pretty narrow car.

Ferrari–There are a lot of eligible Ferrari cars eligible.  The Racer Ferraris are too large and are not eligible.  The only known plastic Ferraris are the Fly GTO and the Fly 250LM and the Monogram GTO 64.  Both sidewinder and inline 3D chassis are available for the Fly GTO and only an inline is available for the Fly 250LM.  The Slot.it GT40 chassis can also be modified to fit these cars as I showed in my How-To post:   http://austinslotcarclub.com/fly-ferrari-gto-slot-it-converson-project/   Clearance is tight at the front of the 250LM and the GT 40 chassis takes a good bit of work to fit in this car.  I have only seen inline 3D printed chassis for the Monogram.  The other Ferraris are resin and will take more work to be competitive.

Jaguars–I built the Revell-Monogram Lightweight E-Type using a 3D printed chassis.  The Lister-Jaguar is resin and would take work to be competitive.

Maserati–The Maseratis are resin and will take work

As I do not have all of the cars on the list, I cannot confirm that all of the cars have similar rear track width.  If any of the cars have a clear advantage due to a wider rear end, it could be necessary to impose a maximum rear tire total width.  If anyone has a Carrera car they would like to enter, please let me know the rear body width.   And, if anyone has any question about a specific car, please let me know.

Good Luck!

Russell

I have an ISO-Grifo Bizzarini on order from George Turner Models (resin shell), and it is taking forever to get here. Is that car is still eligible? I have a 1/32 AMT C2 Corvette as backup.

I think the AMT Stingray is quite a nice kit, with some small issues. The rear bumperettes are supported by the license plate, so there was a big ugly chunk taken out of the back. Sheet styrene to the rescue. I got it CHEEP at Hobby Lobby.

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My black hardtop was the orange car shown and I have the red lemans roof car unmolested.  I want to get the black car running, even if not competitive because that guy at the Revival always shows up looking so tough.  It may be entered, but not raced as they say.  I am getting outside assistance.

I looked at many Cobras at the vintage races in recent years and the whole rear fender on the 427 was wider than the 289 parked next to it.

Marc

The headlight specification is a holdover from a previous series and I believe that it is referring to the real race cars having required head and tail lights.  As many racecar headlights in period were covered during daytime racing, sometimes with tape, sometimes with metal or plastic covers, or otherwise not visible, I do not think visible headlights should be required.

Randy

Tracing Cobra race car body modifications can be tricky as it was a constantly evolving process, with various fender flares and extensions being used.  The ultimate 289 body (and my personal favorite Cobra shape) may well have been the five FIA 289 Cobras that were built.  These cars had a wide rear body, requiring the doors to have a cutback rear edge.  The front wheelwells had wide fender flare extensions and an oil cooler inlet was added below the regular 289 flat-bottom grill opening.  The hood had a scoop for fresh air in and added side fender vents let hot air out.  The FIA cars also had the “suitcase” bumps on the trunk lids to clear the mandated FIA luggage space.

The 1/24 Revell slot car is a pretty accurate FIA car, except for the lack of  trunk bumps.  The AMT Cobra behind is a 1/25 early car.

After the FIA cars, there were 11 USRRC Cobras built, using the FIA mods.  Then the Kardashian FIA rear body was used as the buck for the 427 rear body, although there were variations here as well; the street, competition, and S/C cars had slight differences on the rear fenders, all very similar to the FIA 289 rear fenders, except that the doors were not cutback.  In addition, 33 427s were built with narrower rear fenders, closer to the rear tires.  After a run of the “narrow-hip” cars Shelby went back to the wider rear, because it looked better.

In 1/32 scale, the Revell hardtop is an early 289 and pretty close to the LeMans/Goodwood hardtop cars, as they were raced in period.  The MRRC car behind is clearly a 427.

Russell

Thanks, Russ. I will proceed, then 🙂

I am using the Fly 250LM original chassis that was SW to continue to have the lovely interior.  i also added the SCC front axle adjustment blocks which were a challenge to install.  I really came close to using the 3d inline chassis, but cutting up the interior is no picnic.  I am glad two of use may have challenged the sine qua non for a change.

For this series I am not convinced every car should be max winner stuff.  The races have definite big gaps in performance but the cars look awesome.

I do have a Cobra hardtop from a few years ago that I never quite got running.  I may order the new 3d for that black beast.  It even had side pipes from styrene tubes.  I did not know the Daytonas had a 427.  My Scalextric 427 1972 (?) Greenwood Radial Corvette has the front motor, but I only race it on my short track.