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Hello Ducman -
Just saw this post. I raced one of these in 1967-69, still have some records and a lot of memories (although as I get older, I'm not sure my memory is what I think I remember it...

These people have quite a variety of bump rubbers, some as long as 75mm (3"):

https://www.resuspension.com/index.php/bump-stops/re-suspension/cot-series.html?mode=grid

Earlier this year I saw...

I came into a BT 29 in ~1974. I was 6'3" (have lost a couple " since ;-} ) with long legs. There was no way I could operate the pedals, my knees would have needed about 3" notches cut into the...

Eric - My limited understanding would say that bump rubbers are a way of tuning the spring rates, not changing the damping characteristics. Would you care to elaborate a bit more? Always looking to...

Graham - that chrome plating on the suspension really looks sharp. As I told you on the phone, "Red" always liked the way chrome looked, and as long as we got the platers to bake out afterwards, we...

Graham - I presume you're asking for the Mk.6 LeGrand that you're restoring. Back in the day (1967-69) we ran 30-minute Nationals with the behind-seat aluminum tank and never had a problem - are you...

So Graham, does your "liking" this post mean you bought the car? If so, Congratulations!

... but I do hope it doesn't push the Mk.6 LeGrand project to the back of the shop!

- Gerhard

Many racers have sung the praises of Odyssey batteries, most use their PC680. Take a look at the PC series, one may just fit your Varley battery tray.

batterymart.com has great prices.

-...

I have found this calculator very handy: http://www.csgnetwork.com/rearendgearcalc.html

Besides finding your max. speed in a gear at your max. rpm, you can also find the rpm-drop between gears:...

Just going back through old postings - "Red" never built a fiberglass tub, certainly not in this 1967-68 time frame. He was a masterful fabricator with round-tube frames, though; eutectic-brazed with...

If you really mean a 6-speed, and it wasn't just an adjacent-key typo, that would certainly not be period-correct. In fact, though I would hardly claim to know a lot of racing history, I've never...

For the springs, just looking at the photo, the wire looks pretty skinny, so they could well be 160 lb/in (160 in/lb would be a little soft ;-} )
But on the web you can easily find a formula for...

The biggest difference was, the Mk.3 had cast-aluminum upper A-arms with inboard shocks; when we put the 1600 twincam into it for FB, it got bad brake shudder, blamed on the narrow base of that cast...

I wrenched on a LeGrand Mk.3 (chassis #2, which we put together in Red's 2-car garage) Formula C for Karl Knapp in 1965, for 1966 we put a Ford twincam into it for Formula B, and then we built...