Motorsport Mickey Posted February 27, 2017 Report Share Posted February 27, 2017 Hi Graze, Sorry to rain on your parade but tractive effort is not torque lb ft as we know and love it. From memory you need to multiply it by rolling radius of tyres and divide by the final drive ratio ie if measured in top gear of 1:1 ratio you divide by the diff ratio 3.7- 4.1 etc. But I'd need to check that, long time since I've calculated such. Mick Richards Quote Link to post Share on other sites
TR 2100 Posted February 27, 2017 Report Share Posted February 27, 2017 I recall some similar photos appearing in display at the annual meeting (The International) when it was held at Donnington on the Melbourne Loop in around (?) 1978. Ah Yes. Not actually called the International in those days. As the organiser of the Event, I was staggered afterwards, driving away, to find that so many members had been camping overnight. In my mind, it was a day event. How times have changed. For the better, obviously. Just giving an insight into how different things were back then. 1976 and 1977, I think although there was a further year that was organised by Others - the year of the "smashed front wing" concours winner ! ! Aah - the memories. AlanR Quote Link to post Share on other sites
BlueTR3A-5EKT Posted February 27, 2017 Report Share Posted February 27, 2017 Ah Yes. Not actually called the International in those days. As the organiser of the Event, I was staggered afterwards, driving away, to find that so many members had been camping overnight. In my mind, it was a day event. How times have changed. For the better, obviously. Just giving an insight into how different things were back then. 1976 and 1977, I think although there was a further year that was organised by Others - the year of the "smashed front wing" concours winner ! ! Aah - the memories. AlanR Would that be the Red German TR3A with the painted on under bonnet Union Jack? Peter W Quote Link to post Share on other sites
monty Posted February 27, 2017 Report Share Posted February 27, 2017 Hi Graze,Sorry to rain on your parade but tractive effort is not torque lb ft as we know and love it. From memory you need to multiply it by rolling radius of tyres and divide by the final drive ratio ie if measured in top gear of 1:1 ratio you divide by the diff ratio 3.7- 4.1 etc. But I'd need to check that, long time since I've calculated such.Mick Richards Yes as Mick says TE is not the same as torque! I am getting around 110bhp @ the wheels & an average of 125 lb ft torque. Regards. Quote Link to post Share on other sites
Graze Posted February 28, 2017 Author Report Share Posted February 28, 2017 Hi Graze, Sorry to rain on your parade but tractive effort is not torque lb ft as we know and love it. From memory you need to multiply it by rolling radius of tyres and divide by the final drive ratio ie if measured in top gear of 1:1 ratio you divide by the diff ratio 3.7- 4.1 etc. But I'd need to check that, long time since I've calculated such. Mick Richards Ok Mick that's fine as I couldn't believe it either based on your calcs that is 113.5ftlb of torque Graze Quote Link to post Share on other sites
Motorsport Mickey Posted February 28, 2017 Report Share Posted February 28, 2017 Sounds in the right area, glad the cars going well. Mick Richards Quote Link to post Share on other sites
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