New TVR still under wraps!
Discussion
phazed said:
No, can be either.
Measured on an engine dyno direct or at the wheels on a RR.
If measured at the wheels on a standard RR then a percentage is deducted for transmission and drive train loss for an approximate fly figure.
A factory BHP figure would be measured on an engine dyno.
Ok, didn't know that, but shouldn't the percentage be added to get the fly figure ?Measured on an engine dyno direct or at the wheels on a RR.
If measured at the wheels on a standard RR then a percentage is deducted for transmission and drive train loss for an approximate fly figure.
A factory BHP figure would be measured on an engine dyno.
twold said:
DonkeyApple said:
Could use 17.647% when adding back?
Similar to calculating VAT but possibly most rolling road operators haven't heard of VAT?
I admit I do adjust it back up very slightly on the pub bragging quotient index ,teehee.....Similar to calculating VAT but possibly most rolling road operators haven't heard of VAT?
Incognegro said:
All good to know. Although screw what the new car does my 4.5ss needs to see 452bhp to make 400 per ton (based on cerbera weight of 1130kg) and I want that at the wheels then I don't have to talk about how much I've spent, instead how much I've saved.
Ohh so only 500+ at the fly wheel, I think you need to start drinking now 
Incognegro said:
twold said:
DonkeyApple said:
Could use 17.647% when adding back?
Similar to calculating VAT but possibly most rolling road operators haven't heard of VAT?
I admit I do adjust it back up very slightly on the pub bragging quotient index ,teehee.....Similar to calculating VAT but possibly most rolling road operators haven't heard of VAT?
This is why I retain a solid store of reserves in case I ever need to increase the BHP/ton of my car.
TVRMs said:
LOL power to weight is all pub talk. Car will never weigh what the dry weight used is and the engine will never make the power used is either.
Assuming it's fly power, its still a good target to aim for.
Ultimately it really boils down to where the car delivers the power it has and whether that is right for you. Assuming it's fly power, its still a good target to aim for.
A car with low BHP/ton but delivering it exactly how and where you want it as a driver will be infinitely superior to a car with bigger BHP/ton but being delivered in the wrong place for you as the driver.
My car has 400/ton but I suspect that most people who drive it would find it slower than most TVRs. It has taller gearing and the torque is delivered much higher so it's a car that is actually pretty benign on U.K. roads but is unbelievable at high rpm and speed where it marches away from a lot of cars.
DonkeyApple said:
TVRMs said:
LOL power to weight is all pub talk. Car will never weigh what the dry weight used is and the engine will never make the power used is either.
Assuming it's fly power, its still a good target to aim for.
Ultimately it really boils down to where the car delivers the power it has and whether that is right for you. Assuming it's fly power, its still a good target to aim for.
A car with low BHP/ton but delivering it exactly how and where you want it as a driver will be infinitely superior to a car with bigger BHP/ton but being delivered in the wrong place for you as the driver.
My car has 400/ton but I suspect that most people who drive it would find it slower than most TVRs. It has taller gearing and the torque is delivered much higher so it's a car that is actually pretty benign on U.K. roads but is unbelievable at high rpm and speed where it marches away from a lot of cars.
I'm in the last stages of building/rebuilding two cars with close to 400bhp/tonne. One a screamer, the other more laid back. Both will be quick, but in a very different way.
TVRMs said:
Agree. I took a T400? out on a sprint once and it felt sluggish, but then it was never built for sprinting
I'm in the last stages of building/rebuilding two cars with close to 400bhp/tonne. One a screamer, the other more laid back. Both will be quick, but in a very different way.
My car is very benign on the roads in the UK. It'll cruise at 80 on just over 2000 rpm and while it is quick it doesn't feel quick. My old Griff with not much more than 200 BHP/ton felt much quicker and much more exciting on the road but when I get to take the car somewhere where it can stretch its legs and without the family onboard it is like driving a completely different car. But I've always enjoyed the way a straight six delivers its power over a V8 in a sports car and been happy with the trade offs. I'm in the last stages of building/rebuilding two cars with close to 400bhp/tonne. One a screamer, the other more laid back. Both will be quick, but in a very different way.
By comparison, I suspect the new TVR will be a monster at road speeds but then with a brilliant chassis it might not be as rewarding as a Griff as there will be much less thrill as you'll be driving it well within its limitations.
TVRMs said:
Agree. I took a T400? out on a sprint once and it felt sluggish, but then it was never built for sprinting
I'm in the last stages of building/rebuilding two cars with close to 400bhp/tonne. One a screamer, the other more laid back. Both will be quick, but in a very different way.
Although it managed to lap Lemans ...I'm in the last stages of building/rebuilding two cars with close to 400bhp/tonne. One a screamer, the other more laid back. Both will be quick, but in a very different way.
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