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hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"
Thought I'd start a thread:

I'm sure a lot of you have seen these videos already, but I uploaded these videos for a friend of mine (www.the71crowd) who isn't too computer savvy. Hope you enjoy.

2008 SVRA NJMP:

This is the first public event held at NJMP's Thunderbolt track. The Morgan is a 1400lb, Crossflow Ford powered version. Both cars turned similar lap times, but the heavier weight of the Triumph meant he burned his tires down. The left front was corded after the race.



2009 SVRA Watkins Glen:

Qualified 2nd oa, but problems in the qualifying race meant starting mid pack. To get a reference for speed, all the car featured at the front of the pack turn similar lap times as the TR250K at both Watkins Glen and Road Atlanta. They're moving.. fast.



2010 SVRA NJMP:

The Lotus is a 1500cc example weighing 1100lbs to the 1950lbs that the TR4 has to weigh. The Super 7 driver is a former TR6 racer of note. Both cars were some 3.5 seconds per lap faster than the 3rd place Escort.



Both the driver and Bob Leitzinger (510) go way back to when they raced in the 1960s. The Datsun and Alfa had much better tires than the Triumph, which is a by product of the way vintage rules are written (60 series sidewall rule).



This is the same car as above, pre 'restoration'. Lots of fuel issues going on in these two videos. Running about 5-6 seconds a lap off where it runs now (runs up front with those Porsches). Knew what the issue was, but didn't have the parts to fix at the track. Tires are Vintage TDs, so they're narrower and less grippy than what the other cars you see (except the TR3) are running. There are a lot of weird rules in vintage racing, so things aren't always "fair"... Lost an oil pump at the end of the Sunday race. Steve Yott's design fixes that issue and has worked flawless.




Edited 2 time(s). Last edit at 2013-07-26 03:32 PM by hoffman900.

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hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"
Here is some of Tony Drews' collection ( www.tonydrews.com , http://www.youtube.com/user/tonyd0308/videos ):











hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"
Jeff Quick's TR4:






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hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"
Leigh Derby's Spitfire:


Quinn Derby's Spitfire:

hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"


It's short and doesn't have a happy ending, but the sound is great! Highest qualifying 4cyl car (3rd of 31 Triumphs) and highest running when the valve dropped. Tom Kreger's TR6 (2nd place) was on very wide Hoosier R6 tires (almost slicks) and the other TR6s were on cantilever slicks - these tires are worth well over 6 seconds a lap over what's on the TR4. Driver was 75yo at the time and still does all his own car prep.

hoffman900 Bob Adams
USA, USA, USA   USA
1978 Yamaha MC TT500 "Flat Tracker"
Earlier in the Kastner Cup weekend. Just cruising around after the first couple of laps. Lap traffic caused the 3rd place MGB to catch up on the last lap, but Dick just stuck his foot in it and opened up a gap. Finished 2nd of 49 cars.


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