Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Not bad for an old smoker...

[Jolley]

I think you should post up all the results Kev... Should make interesting reading!

[chris.p]

Originally Posted by skidlids

Well I would ignore that figure as its not the same power measurement
Based on the figure of 98.629% you would need a SAE of 48.33 bhp to arrive at a DIN figure of 49 bhp

I will hopefully be provided with all the figures so I can see what if any ammendments need to be made to our rule book

From what i can work out the Parkitt Dyno reads in NET SAE J1349 spec which then needs converting to GROSS DIN 6270 spec
This conversion seems to be roughly 7.5% so multiply the figure the Dyno reads in by 1.075
My bike read around 55.6 BHP (SAE) add 7.5% to this and you get 59.77 bhp (DIN) the DIN Dyno I had it on last Tuesday measured it as 61.1bhp

My Class B Monster measured 45.52 SAE which converts to 48.93 DIN

Like I said, math's is not my strong point


Chris

[dunlop0_1]

Originally Posted by Jolley

I think you should post up all the results Kev... Should make interesting reading!

Absolutely.

Come on Kev what you hidding from us?

[skidlids]

Originally Posted by Jolley

I think you should post up all the results Kev... Should make interesting reading!

Firstly I haven't got any of the results yet other than my own
Secondly its not my place to tell other competitors what their competitors bikes are making without first getting the individuals permision to relay the information
Unless someone is caught in breach of the rules

My main concerns regarding the Dyno runs is firstly is anybody making more power than they should and if so will our rules allow us to do something about it

In our rules we mention corrected horsepower, but if the Parkitt Dyno reads either low or high we need to know

Based on the figures I was given for my class A bike it looks like it reads lower than Dave Woods Dyno in Aylesbury and from my discussions with Alan it looks like it reads pretty much the same as the BSD Dyno in Peterborough

Once I gather all the info I need we will look to see if any adjusting of the figures in the rules is necessary, after 8 or so bikes were tested we should have some decent information to go on

[Jolley]

Well, you have my permission.

[bradders]

Originally Posted by Jolley

Well, you have my permission.

and mine

how much do you think is lost as the motor was hot then? Mine was difficult for the guy to start and ticking over at 2k revs plus so was a little frazzled

[paynep]

Originally Posted by skidlids

Firstly I haven't got any of the results yet other than my own
Secondly its not my place to tell other competitors what their competitors bikes are making without first getting the individuals permision to relay the information

I just hope my 51 BHP (with misfire) was UN-corrected!!!

[Jolley]

Any results yet Kev? Mr Larrett peered over the guys shoulder at mine and I think he saw 48... But I'd like to know for sure. Also, if you don't want to put up individual results, could you just let us know the highest and lowest?

[skidlids]

Originally Posted by Jolley

Any results yet Kev?

Nope, Not even chasing them at the moment.
Don't even know when the Dyno guys will get them properly documented and sent to Bernie.
I'm nt sure how Bernie is set up computer wise, but I was planning on getting them off him when I meet up with him in April and hopefully have the revised figures ready for the rule book prior to the Mallory meeting.
Then we can hopefully test a few bikes at Mallory and see if anybody falls foul of the rules

If my initial calculations are right
we are probably looking at SAE maximum figures from the Parkitt Dyno of

50bhp for Class B
60bhp for Class A
With a tolerance of 0.5%

eg 49(SAE) + 7.5% = 52.65 (DIN) + 0.5% = 52.94 bhp DIN
eg 60(SAE) + 7.5% = 64.5 (DIN) + 0.5% = 64.8 bhp DIN

Edited to get the Class B figure right

[Jolley]

...and if anyone was tested higher than that at Brands will they lose their points?