exponentially more, if 50hp gives you 80km/hr 100 will not give 160, it is not a straight multiplication
lusty9,
Jul 9, 8:55pm
omg they did not say that on top gear! they said 1001hp to go over 400km/h and it's a 2.5ton car no diesel engine could eva reach that speed, I haven't heard yet anyway.its a 7ltr w16 engine with 4 turbo chargers
smac,
Jul 10, 6:27am
There's your problem, taking technical advice from TopGear! I love the show for entertainment value, but they certainly do gloss over anything remotely technical, and do state some absolute clangers from time to time.
tonyrockyhorror,
Jul 10, 8:54am
The entertainment value was OK for a while but it quickly got repetitive and tiresome. I haven't watched it for years now.
mark.52,
Jul 10, 10:11am
I had a motorcycle that produced a great deal of torque for the engine size. On paper, using the torque/weight ratio, it would outperform many motorbikes with a larger engine. And it could, too. But only if the gearbox was used to keep the engine speed between 6000 and 7500.
This machine was fun to ride, and a real challenge to get peak performance out of. Because of it's torque characteristics - not to mention mediocre handling, it also killed a fair percentage of riders who weren't used to that type of power delivery.
(Any guesses!)
I currently have a 4 wheeler that has the peak torque figure quoted at just 1950 rpm, although a look at the graphs reveal peak is at around 2600. The stated figure gives a good indication of a wide spread of useful engine power, which is actually realized in day-to-day driving. It's not a diesel, either.
Torque (in lb/ft) X RPM, then divided by a constant (IIRC that is 5252) givesBHP. I don't know the conversion for the more modern values, but it would be easy enough to work out.
On the graph (dyno readout) a gentle curve of torque that achieves, say, 80 percent of it's peak low down in the rev range is likely to be the most useful for day to day driving. The other type (such as the curve for my old motorbike, which started low, climbed at a shallow gradient, then suddenly shot up the graph to peak at 6500 rpm) is less usable (but much more fun) and described as "peaky".
bellky,
Jul 10, 10:22am
Nice post mark.52. Was the peaky bike a 2-stroke!
mark.52,
Jul 10, 11:29am
Thanks.
Yes, it was. (How could you guess ;)
Bonus points for getting the make, model, or at least nr, of cylinders.
tonyrockyhorror,
Jul 10, 11:31am
Kawasaki H2.
bellky,
Jul 10, 11:32am
I have no clue but I'm going for RGV250.
tonyrockyhorror,
Jul 10, 11:36am
For kW from N-m and rpm it's 9550.
tonyrockyhorror,
Jul 10, 11:37am
Mediocre handling!
tonyrockyhorror,
Jul 10, 11:38am
The H2 Mach IV wasn't called "Widowmaker" for nothing.
mark.52,
Jul 10, 11:49am
tonyrockyhorror is closest.
It was a Mach 3. Till I killed it. :(
The H2 had a slightly more manageable spread of torque.starting at about 4000. Lot more of it, though.
gunhand,
Jul 10, 3:50pm
Wasnt Top Gear, it was Doco on the making of it (the Veyron).And I dont pretend to really know alot about torque V HP. All I know and care about is when you put your foot down or twist the throttle you move off.
3tomany,
Jul 10, 4:47pm
something us falcon owners have known for a very long time
phalanax,
Jul 10, 5:05pm
Agree.that way if you change down you instantly get more torque with the rev increase .which also allows you to change down again and get even more torque.lol.same car 2 versions.sports and luxury. the sports has 300hp but lower torque also trans settings are different.the luxury has 275hp and different trans settings also.same block and box different crank and cams.the 275hp has a higher redline and more top end pull.
sr2,
Jul 10, 5:13pm
A couple of years ago I had the opportunity to have a ride on a mates recently restored Mach III (the front disc brake model), having spent a bit of time on one in the 70??
desmodave,
Jul 10, 5:28pm
Ive had many a close shave with mack3's
yudasgoat2000,
Jul 10, 5:43pm
I have been wondering, often, what it would be like to drive a vehicle equipped with an engine that had a totally flat torque "curve" (ie the same amount of torque no matter how fast, or slow, you're going).
skiff1,
Jul 10, 5:48pm
no worries, anything you buy will seem grunty compared to an astra. I think i get your concept though, and i like it
zephyrheaven,
Jul 10, 6:15pm
An Astra!! Good gravy - I never imagined you behind the wheel of one of those, but now I know the truth - I will be forever smug
rod-zone,
Jul 10, 6:42pm
Well This is an easy argument
H.P.= How fast ya hit the safety blocks AND Torque= How far ya move the safety blocks
gunhand,
Jul 10, 6:44pm
Naaaa, easier than that. HP= more than really is Torque= thats what alot just do.
rod-zone,
Jul 10, 6:55pm
Hahaha.a common saying at the track."its got more torque(talk) than the driver"
smac,
Jul 10, 7:09pm
In my defence wifie chose it. I get the chose the replacement though, hence the current conversation!
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