19+ drivetrain loss calculator rwd
3 Aug 6 2008. In this thread in.
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Regardless of how much power the.
. The accompanying charts reveal that the average power loss with just the simple. More typical was a loss of between 13 and 19 hp between 3600 and 5900 rpm see Test B. Whenever I hear someone talking like that I feel like Because most of them are idiots but i am glad this is an informative thread on the subject.
7 Mar 17 2006 Edited yes its different for any car some suggest the formula whp x 117. This means that around 159 of the engine power is lost through the drivetrain. The RWD chasis is inherently advantageous to acceleration performance numbers since upon acceleration more weight is.
Joined Mar 8 2008. Quite a few people dyno in the mid-upper 240hp range but the engine is rated for 304hp or 312 SAE if you ask GM but Ill go with 304hp. From our parameters and methodology we got an overall efficiency of the drivetrain of 841.
Alot of people like to calculate drivetrain loss through a constant percentage. That would give a total drivetrain efficiency of 975. TrailBlazer SS AWD.
The same story in Jaguar F-types. It does increase with power more thrust loading on helical gears etc. Some race car drivelines have SFA loss compared to a road car.
There are of course. RWD can also apply power around a turn without much trouble but can get tail happy towards the end if the cars power outweighs its. Whats a good figure to use for.
Figure a stock v6 tib 171hp crank on the dyno 145whp x 117 1697. That means 81 efficiency for a typical layshaft RWD manual transmission. Joined Dec 19 2001 9106 Posts 2.
First Common Theory. Thats a 194 loss assuming 245hp. But the biggest increase in loss is through tire flex.
There are so much better RWD options out there given the limitations of the WRX. They way I always heard people talk about drivetrain loss was by fwd about 5-8 loss rwd about 10-12 and awd 15-18 loss. Its also in-between in regard to weight.
Most people throw out 15 for a RWD manual and 18 for a RWD auto as a good estimate of parasitic loss in the drivetrain. But the biggest increase in loss is through tire flex. S14 springs to mind here The AWDhandling is really what it has over other cars especially.
With RWD its also much easier to create a car with neutral balance where weight distribution is an even 50. 75 Of Engine Horsepower Sound About Right For AWD. 02 Camaro SS 04 GTO.
I think you would have the least loss with the fwd setup awd will give you the most loss and rwd will be little better than awd. It is impossible to calculate these values accuratly this information should be used as a rough guide only. We have a transmission expert on this forum and he says 10 loss per gearset.
I generally go by 20 RWD and 40 AWD but its only a very rough guide. Rwd has more drive-train loss than FWD but less than AWD. Now this makes sense.
Essentially you can probably apply the 8-10 loss for FWD 12-15 for RWD and 15-20 loss for AWD to modern cars and be fairly close. Most people throw out 15 for a RWD manual and 18 for a RWD auto as a good estimate of parasitic loss in the drivetrain. Im Putting Down 360 All-Wheel Horsepower.
A good manual transmission can be over 99 efficient and a good hypoid final drive can be over 985 efficient. For example a 15 power loss for a RWD vehicle.
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