Not bad for an old smoker...
 

Eeeeee my poor old bike dyno'd at a wheezy 53 and 55 BHP. :(

Although as you know, it did managed 2 wins and came within a whisker of Mr Listers lap record.
Not bad for an old smoker eh. :D

Power is not everything people. :frog:

.
.Not bad for an old.smoker eh. :D
.

yea but the bike wasent to bad tho:lol:

You were taking no prisoners out there. I was doing 58s laps and you came past me like i was standing still!!

First and second for me with a measly 48bhp!

Don't forget, it was an SAE not a DIN dyno.


Chris:burn:

Well done, sign of things to come for the year then. What was the results/places with the rest, and how did you find the tyres.

When I rode them last year they gave ore feel and allowed ore confidence pushing into the corners, they did not drop in like the Rosso's.

not bad cocker! you were in a different class this weekend mate.

Well done Dude!

Awesome Lawson the second! (again)

that was the DIN figure, I've really got to have words with myself because mine made 60!

I think the guy was converting them..mine was 46 then he said 'hold on you aremeasuring ....(missed what he said but may have been din) so 49'

hot engine, 18 laps of being hammered and no oil cololer...happy with that :D

Chris this means nothing to me? Explain please. :D

Thanks Steve.

Tyres are superb, I really mean that. Only downside being that the test day and 2 races wrecked 2 rears. Gonna try a bit softer rear suspenion at Mallory test day.

Only one big slide which Kev Palmer will tell you all about. :D

Wouldn't have happened without knowing you where up my arse so to speak.:D

So in effect it's your fault I won. :lol:

Smellory could be a whole different ball game.

Eh, well done lad! :biaggi:

Firstly, I would like to make clear, That HAS NEVER / WILL NEVER happen/ed


Secondly, Matt Larrett kept, and keeps saying it's my fault he beet me


That's what I said last year after Brands and before I crashed at the second corner! :(

Doooooooode, Game on!

Matt

Kev told me that only happened because you were trying to keep up with me through Clearways! ;)

By the way, my tyre was looking a little like yours by the end of the second race... but my 58.2s lap came on lap 14 of the second race, so they seem to grip no matter how bad they look.

what was my fastest time last year Ron, on the worst tyres ever to grace a DD bike

I would put it up here, but I havn't got time to look right now mate.

I think my fastest lap was near the end, I took it easy for the last couple of laps but just before that was my fastest lap

You did a 58.9 on lap 5 of the second race.

Nice one M8, some of the angles you were at when you came past dont suprise me your going through tyres and I heard about your sideways move:eek:

Craig

There are two types of Dynometer, I am not up on how they work, but to say that the SAE dyno reads Lower than a DIN Dyno.


Horsepower is a measurement of the engine's ability to perform work. One SAE
horse is the ability to lift 33,000 lbs one foot in one minute. One DIN
horse is the ability to lift 450000 kg one cm in one minute. For the same
power the SAE measurement is thus 98.629% of the metric DIN measurement.

As Bradders said, his reading was 46bhp in SAE and when converted to DIN bhp it was 49bhp, and as maths is not my best subject i will leave it to you to work out the DIN bhp from your 53 & 55bhp, if that is they where not converted to DIN.


Chris:burn:

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

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

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


Chris:burn:

Absolutely.

Come on Kev what you hidding from us?

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

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

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

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?

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

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

#if they were they should take a trophy!! After that race I'm surprised many made 50bhp as engines were so hot, especially without an oil cooler

bloke said to me mine was 3rd most powerful of those tested, dont know if that included A class or just B but thnk it was all bikes...not bad for an old road bike with just a jet kit & filter ;)

Think mine made 50.02 SAE which is high 53's DIN

jeez, sounds very good especially if hot after the race, not that I know much (only what others tell me!) but hot engine can lose what, 5% or more of power?

expect mine on a warm run would be 51ish if 49 hot

Sounds like there will be a lot of people losing points ;)

who knows what values come out and how/when do you measure? If at the end of the race, power will be down even if only a little so do you say its its aboce XXbhp, which is on or just under the class limit, it has to be tested again later when cooler and if over, is it disqualification?

could get messy, espcially with dynos reading lost of differnt things!!!

If there is a specified limit and someone is over it, doesn't that disqualify them? And if someone is over at the end of a race with a hot engine, then they will only be more over with a cooler engine.

(just playing Devils advocate)

...and I don't believe it would be right to raise the limit after the start of the season (if that is being considered).

However, you are right Bradders, because how exact a science is dyno testing? Unfortunately, it is written into the rules that we will be tested against a defined limit.

[quote=bradders
bloke said to me mine was 3rd most powerful of those tested, ;)[/quote]


Hmmmm ;)



Craig

No Ron they won't as the Dyno used was an unknown quantity

But any bikes that did come out high will be first on the list for testing at the next available session and subject to the SAE figures and conversion figures generated by the Brands Dyno testing.

I ammended my earlier post and as far as the Parkitt Dyno goes we will probably be looking at a Class A figure of 60bhp (SAE) and a Class B figure of 49bhp (SAE)
I say probably as there is no intention of changing the stated limits in the rules which are Dynoject corrected DIN figures of 65bhp for Class A and 53bhp for Class B. Its just a matter of making sure the correct figures are used and applied to everyone

Most Dynos read slightly different from each other to be on the safe side your better off with one that reads slightly high, others will be quite accurate and the remainder will read slightly low, these are the ones that could land you in trouble, as you could have more power than you think and when tested at the track fall foul of the rules

When the figures were incorporated into the rules they were considered a fair amount of horsepower that should be acheiveable by many and although money and a good tuner could get you more the series is not about who can afford the best tuner its about being the best racer and having a even and fair playing field

as the rules say
***Dyno Testing – when available the intention will be to Dyno test the top 3 finishers in each class and a few at random, if tested after race 1 you will not be tested again after race 2 instead the next highest finisher shall be tested.
Dyno testing is carried out at the bike owners risk and refusal to be tested will result in disqualification from the results for that meeting***

As such Dyno testing will take place on hot engines and if anybody is getting their bike setup on a Dyno it makes sense to get the jetting/fueling suited to a hot engine as its a race bike and will be expected to run hot.

It doesn't matter what it makes when its cold as thats not how they will be tested and I for one wouldn't want my bike run up on a dyno for full power runs without a bit of pre-warming

why run an oil cooler if it doesnt make much difference? I'm thinking of the difference between warm - start of race - and steaming - end of race

i dont have one fitted, but have one to go on, and if it doesnt drain the power when hot then i wont bother, if hovere after 4/5 distance I'm losing 5% or more power I will....and most seem to have then fitted

Who said that, certainly wasn't in anything I typed above

Define warm and Hot
Even with an oil cooler my bike gets hot, just not as hot as it would without one and as such it will not have as much of a power loss with the cooler as without it.
Engines have an optimum running temperature which is what your trying to acheive with a oil cooler, air ducting etc, and ideally thtas the temp you should have your bike up to when running it on a dyno especially if your seting fueling

From what I could see of my oil temp gauge my bike was running a lot cooler in race two than it did in race one, not suprising as the air temp had dropped.
If it had been really cold I probably would have covered part of the oil cooler,
Maybe you have noticed that some racers cover part of their radiators when the air temp drops right down, I wonder why that could be ? could be that to cold an engine isn't ideal, maybe they are trying to get to that optimum operating temperature.

So at the end of race two was my bike warm or hot ? I'm pretty sure it was warm before the RED lights went out at the start of the race
and if it was hot then what was it at the end of race one ? Hotter !!