hmmmmmm power my bikes dyno sheet. (dial up slow)

Originally Posted by hall13uk

first with akro system no pc
second with akro system with pc

Thanks.

Had the fuelling ever been adjusted using a Teka or Yoshi box prior to the PC?

As has been said the figures do look a little high but I have no reason to suggest that there is anything untoward going on.

My Raptor 650 read anywhere from 71 to 76 when I tested a few dynos a while back. As Rictus has said the only useful data from any dyno graph is when used for a comparisonand we can see that you gained power which can only be a good thing

If it helps with a comparison your 76.22 DIN is actually 75.2 SAE which is around 3 hp more than we tend to see with many of the MiniTwins but not outside of the realms of different dynos to be honest.

Mike, since Minitwins has a power cap, how is this enforced if you can get such wildly varying dyno results? A 'control' bike?


Btw hall, did they put a spare tyre on while testing?

I dont know how true this is, but I've read that dyno testing does no favours to tyres. Can someone with more knowledge comment on this?

Originally Posted by Flamin_Squirrel

Mike, since Minitwins has a power cap, how is this enforced if you can get such wildly varying dyno results? A 'control' bike?

Btw hall, did they put a spare tyre on while testing?

I dont know how true this is, but I've read that dyno testing does no favours to tyres. Can someone with more knowledge comment on this?

Nah, we have a control dyno

Seriously, the only way to manage things is to enforce the power limit with a consistent dyno.

Wouldn't worry about tyre wear, it's not that dramatic (assuming they haven't tied the bike down too hard) even on soft race tyres.

[Viney]

Originally Posted by Skip

Good results James!

However you look at it - its still a 3.24bhp increase from stock with pipe to fully mapped...

This is it. Its not down to the end figure, as we all know they can vary imensley due to atmospherics and the way the dyno reads, but what is true is the difference between the two figures, the before and after, thats what you pay for. Also, i cant see the images, but im sure that theres a lot more than 3hp increase somewhere in the range. When mine was done, i had a 6-8hp increase in the midrange which was nice.

Nice one james, look forward to whooping ya ass on Sunday (If i get a new battery by then that is)

[Sid Squid]

Originally Posted by Flamin_Squirrel

I dont know how true this is, but I've read that dyno testing does no favours to tyres. Can someone with more knowledge comment on this?

Meaning rolling road dynos?

It can damage tyres, but realistically you've got to be testing some thing making loadsa welly before it gets to be a problem, usually what happens is that the tyre gets too hot through deforming and/or spins on the roller, to do that you need a few hundred. It could happen if it's not been properly secured on the dyno, but that's rare.

[Viney]

Originally Posted by Flamin_Squirrel

I dont know how true this is, but I've read that dyno testing does no favours to tyres. Can someone with more knowledge comment on this?

Its a good way to see if your rear tyre is alingned properly

My SV done ooo, about 60 dyno runs for one reason or another, and i still got over 6k out of that rear tyre.

That is about the norm for a 250 dyno, have seen a few after mapping make those sort of numbers, last one was same spec made 78, regardless of overall hp figures its the improvement in fuelling and response that makes the difference

76...nice Mine made 72 on sat while out at Total Traction in essex. Current set-up is CCC s/s oval can, k&n and pcIII using map from website/cd for can.

see here

Originally Posted by Robw#70

regardless of overall hp figures its the improvement in fuelling and response that makes the difference

this is the main reason for me getting it done. the responce now is great so smooth of the throttle now , it was rather jerky before.

So after all is said and done can any performance increase shown above really make a big difference in the real world?