Dyno questions?

Yamerhaw · 12-04-2008, 12:55 PM

does the weight of the rider and the gearing affect dyno numbers? seems in my uneducated mind that it would have to?

Rsv1000R · 12-04-2008, 03:44 PM

Not really, it effects performance, but not engine output. Now gearing matters with how accurate the dyno's measurement is, but the tach led is suppose to allow the dyno software to account for any gear ratio.

Gas Man · 12-04-2008, 05:19 PM

that is a debated topic of dynojet vs flowjet numbers.

It won't but that is ONE of the many points that makes the above differences.

Cutty72 · 12-05-2008, 03:37 AM

Gearing yes (possibly, depending on if you can get a tach signal)
Rider weight, no. There should be no rider weight on the bike when running on the dyno. Rider should stand straddling the bike.

Dnyce · 12-05-2008, 03:42 AM

Quote:

Originally Posted by Cutty72

Gearing yes (possibly, depending on if you can get a tach signal)
Rider weight, no. There should be no rider weight on the bike when running on the dyno. Rider should stand straddling the bike.

never seen it done like that honestly

Cutty72 · 12-05-2008, 03:47 AM

Quote:

Originally Posted by Dnyce

never seen it done like that honestly

here ya go.

he's straddling it, but not really putting any weight on the seat.

Dnyce · 12-05-2008, 03:51 AM

u know-i was lying, cuz thats your bike, and i watched most of the 1st one i think. oops lol

in person, always feets on the pegs tho-could just be the one side im standing on tho

Mr Lefty · 12-10-2008, 07:37 PM

Quote:

Originally Posted by Dnyce

never seen it done like that honestly

same here... they're always sitting cause they have to shift... and it takes too much coordination apparently to do with out sitting

Cutty72 · 12-14-2008, 05:34 PM

Quote:

Originally Posted by ebbs15

same here... they're always sitting cause they have to shift... and it takes too much coordination apparently to do with out sitting

Most dyno runs (that I've seen) are a single gear pull. usually one gear down from top (ie 5th for sportbikes, 4th for most HD's) as that is the closest to a 1:1 ratio.

marko138 · 12-14-2008, 05:47 PM

Quote:

Originally Posted by Dnyce

never seen it done like that honestly

Me either. Dood was sitting on mine when it was done.

12-04-2008, 12:55 PM	#1
Yamerhaw Country Boy Join Date: Nov 2008 Location: Hicktown in NC Moto: 07 R1 Posts: 797	Dyno questions? does the weight of the rider and the gearing affect dyno numbers? seems in my uneducated mind that it would have to? __________________ “If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason.” It takes a big man to cry, but it takes a bigger man to laugh at that man.

12-04-2008, 05:19 PM	#3
Gas Man Trip's Assistant Join Date: Feb 2008 Location: Imported from Detroit Moto: 2009 HD Street Classic Posts: 12,149	that is a debated topic of dynojet vs flowjet numbers. It won't but that is ONE of the many points that makes the above differences. __________________ -Chris "Why pay somebody else to fuck up your bike?" Run Amsoil Product

12-05-2008, 03:51 AM	#7
Dnyce flyin high Join Date: Mar 2008 Location: cali Moto: 10speed huffy w/cards in the spokes Posts: 2,318	u know-i was lying, cuz thats your bike, and i watched most of the 1st one i think. oops lol in person, always feets on the pegs tho-could just be the one side im standing on tho __________________ "Racing Is Life, Everything Before and After is Just Waiting" Steve McQueen

12-04-2008, 03:44 PM	#2
Rsv1000R WERA White Plate Join Date: Nov 2008 Posts: 1,059	Not really, it effects performance, but not engine output. Now gearing matters with how accurate the dyno's measurement is, but the tach led is suppose to allow the dyno software to account for any gear ratio.