2014 Ultimate 1 Ton Challenge results

Turtle n Peeps wrote:
Why am I hung up on power?

Because you keep on saying things like:

This is why higher gears make more power, especially on turbo motors.

It's the second time you said gears make power. No they do not.

And you said before that:

At 2500 rpms that is like an additional 35hp... So yes it does make a difference.

So there you flat out said gears made 35 HP. :S


This is real simple. If gears made 35 HP like you said above link me up. Show me a chassis dyno run that shows more power being generated to the ground with shorter gears just like you said above. Should be easy to show............if you are correct.

I'm done if you can't show me a dyno run or even link me up to a thread showing your point.

Turtle, normally we see things the same in the HP/torque discussion and I know you know the technical difference. I think you two guys are simply miscommunicating.

I think AH64ID's comment about 35HP more was referring to the HP available at a given road speed. While gearing does not make HP, it does directly affect the engine RPM (for a specific road speed) which in turn directly affects the HP the engine produces. This doesn't mean the gearing makes the HP, but it enables the engine to do it.

So...for a specific load on and specific hill, lower rear end gears may very well help. Let's pick two identical engines pulling the same load on the same hill but with different gearing. Let's say to pull at 50mph one runs at 2500rpm and the other at 2750rpm. With a flat torque curve, the 2750rpm engine will be outputting 10% more HP than the 2500rpm one. The extra power can be applied to accelerate the truck.

However, ease up the hill a little and you may end up with a different result. If the lower-geared truck rev's out and needs to shift, the higher-geared one will outperform it.