Subject	I think the 1/4 mph increases because
Posted by	RSR on August 23, 2007 at 12:22 PM
	This message has been viewed 176 times.
In Reply To	Horsepower is a derivative of torque, so posted by Octavian on August 23, 2007 at 10:02 AM
Message	the final drive ratio is putting the engine into the better parts of its powerband more quickly. Therefore, what you are seeing is a 50hp increase in *average* power delivered over the course of the run, because of the gear making the engine happier. So, there is no difference in peak horsepower output at the wheels, but a difference in average output.
Follow Ups	ok on those 4:10 richmond gears ...I never saw a dyno with / - Andrew(nj) 05:34:53 08/23/07 I gained 6-7 MPH On my trap speeds with the 4.10s. (n/m) - Eishozzzz 05:43:16 08/23/07 gear change won't make any difference on the dyno (n/m) - aliaZ 08:00:36 08/23/07 Gears are a torque multiplier. (n/m) - Octavian 08:07:39 08/23/07 but you would still run the dyno in your 1:1 gear (n/m) - Atl300zxTT 08:12:16 08/23/07 1:1 at the trans, the final gear ratio is still different. (n/m) - spyhunterTT(nj) 10:03:51 08/23/07 thanks for the clarification (n/m) - Atl300zxTT 10:30:16 08/23/07 indeed - aliaZ 08:58:27 08/23/07 Re: indeed - GPA 10:00:45 08/23/07 For a fixed driveshaft rpm, the rpm of the axles goes down - 300zx90 (CO) 10:22:16 08/23/07 Horsepower is a derivative of torque, so - Octavian 10:02:31 08/23/07 This is getting deep..... - GPA 10:06:30 08/23/07 LOL, you are not making 50hp with the gears. You are - Inzane 10:07:52 08/23/07 LOL, I know, but its odd that the mph go up because - Octavian 10:19:15 08/23/07 Good point. However it could be that w/ the gears you spend - Inzane 10:30:23 08/23/07 Basically, I believe the Leader Gears make more efficient - GPA 10:33:20 08/23/07 yep (n/m) - aliaZ 10:43:49 08/23/07 Less time to accel, but your accel-ing at a higher rate. - John B. (NJ) 10:36:30 08/23/07 Elapsed Time (n/m) - EricTTZ 11:14:45 08/23/07 Horsepower is not a derivative of torque - 300zx90 (CO) 10:12:55 08/23/07 So i can get 500rwhp+ from a lawnmower with the right gears? - CaliguyPurdue (redesigning) 10:55:03 08/23/07 anything is possible with sufficient NAWS (n/m) - Guapo 11:02:36 08/23/07 i got nipples jimmy, can you milk me? (n/m) - ForceFedZ32 (SoCal) 11:23:14 08/23/07 LOL! Thanks for the laugh (n/m) - ZEngineer 11:40:45 08/23/07 Bahahahahaha... sick. - CaliguyPurdue (redesigning) 11:51:55 08/23/07 i have... - ForceFedZ32 (SoCal) 12:09:41 08/23/07 Given the right hormones it'd probably be doable ;~) (n/m) - Barry'z (NJ) 12:16:50 08/23/07 I've never enjoyed the thought of mowing a lawn before. - ZJeweler 11:57:12 08/23/07 no. (n/m) - Dallas DamonZ 17:04:28 08/23/07 I think the 1/4 mph increases because - RSR 12:22:34 08/23/07 Yes, that makes sense to me. (n/m) - GPA 19:25:10 08/23/07 Clarify: - RSR 07:56:01 08/24/07 please read up on inertia dynos before posting this stuff (n/m) - ztunerz 12:47:38 08/23/07 Correct info, incorrect explanation - ZCulture 12:39:17 08/23/07 yes, but it depends on the point of reference - aliaZ 14:39:17 08/23/07 Re: Gears are a torque multiplier. - Kenny 09:09:46 08/23/07 werd. (n/m) - CaliguyPurdue (redesigning) 11:17:47 08/23/07 2nd. DHU. (n/m) - Inzane 09:04:01 08/23/07 Question for you then... - TTFairladyZ 12:14:27 08/23/07 Ideally the dyno should register slightly lower - ZCulture 15:02:43 08/23/07 correct - aliaZ 15:18:29 08/23/07 Gears are theoretical torque multiplier - kaosTTZ 11:45:01 08/23/07 Perfect. (n/m) - ZCulture 12:43:14 08/23/07 Just wanted to add... - ZCulture 12:47:25 08/23/07 unless you have cams with 7800 redline. :) (n/m) - Scotts94z32 12:51:19 08/23/07 well I could care less about horsepower numbes - I.Z.U.8.1.B.4 (SC) 13:10:11 08/23/07 Torque gets you to the wall quickly, HP (and weight) move it (n/m) - Scotts94z32 17:01:23 08/23/07
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