Hi,
Some photos taken of my DRB GT40 at a hillclimb a couple of weeks ago. Course was very tight at the top, but still did well for it's first hillclimb. 12th outright and 1st in class. Mostly beaten by 4WD's and open wheeler hillclimb racers. I'll get them, after a slow and expensive (no doubt) development process...
Yes, it rolls too much, so I'm working on swaybars presently.
Some ...
Hey Julian, at least you're having a go and if you're getting grip then roll isn't that bad
Tell me about your tyres, spring rates, sway bars, shockers and alignment specs -- maybe we can help a little --PM me if you prefer
Chris,
Yep, it does get reasonable grip and so roll is not hurting it too much despite how it looks. Suspension geometry is pretty good, so a bit of roll won't be hurting.
No suspension developement as yet. I keep chasing engine problems! Anyways, haven't done a competition wheel alignment yet, but basic specs are:
2.7 deg front camber (max we could get, yet maintain some reasonable ...
It looks pretty good Julian --for a start. There'll be a fair bit of trial and error to suit your requirements in the handling department.
Any other secrets I have will be PMd
Hopfully this list will help a little :-
Julian, I'm sure Chris will be able to give you advice from experience. It sure looks like a lot of roll for a GT40, but the outside wheels, which are doing the cornering work, look to be positioned nicely at 90 deg. to the road so this is good and the geometry is working. With stiffer anti-roll bars, you will have the same weight transfer but with less movement. Experiment with adjustment to ...
She was / is still a reasonably competitive "street" car (was never built as race car) -- although it didn't like some of the motors we built for it over the last 12 years, she still uses the same unmolested G50/01 trans (probably the same oil as well )
Quote:
Originally Posted by flatchat She was / is still a reasonably competitive "street" car (was never built as race car) -- although it didn't like some of the motors we built for it over the last 12 years, she still uses the same unmolested G50/01 trans (probably the same oil as well ) Chris, Thanks for posting the PDF file, very helpful.
Thanks for replies. Been away working and not checking forum.
Yes, I thought you were running 265's (or similar) front and rear Chris, and your photos tend to confirm more or less equal tyre widths.
I've got all the theories and basics sorted. Have plotted front and rear caster/camber/bump steer curves and am happy with geometry. Regarding cambers and tyre pressures - easy enough. I'll use...
She was / is still a reasonably competitive "street" car (was never built as race car) -- although it didn't like some of the motors we built for it over the last 12 years, she still uses the same unmolested G50/01 trans (probably the same oil as well )
Thanks for replies. Been away working and not checking forum. Yes, I thought you were running 265's (or similar) front and rear Chris, and your photos tend to confirm more or less equal tyre widths. I've got all the theories and basics sorted. Have plotted front and rear caster/camber/bump steer curves and am happy with geometry. Regarding cambers and tyre pressures - easy enough. I'll use thermal imaging to set both so as to...
Julian, I'm sure Chris will be able to give you advice from experience. It sure looks like a lot of roll for a GT40, but the outside wheels, which are doing the cornering work, look to be positioned nicely at 90 deg. to the road so this is good and the geometry is working. With stiffer anti-roll bars, you will have the same weight transfer but with less movement. Experiment with adjustment to see what suits your driving style; DRB have,...
Quote: Originally Posted by flatchat She was / is still a reasonably competitive "street" car (was never built as race car) -- although it didn't like some of the motors we built for it over the last 12 years, she still uses the same unmolested G50/01 trans (probably the same oil as well ) Chris, Thanks for posting the PDF file, very helpful.
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