My day out comparing chassis dyno's....

[Guest MK1gaz]

It's wheelspin and there about an hours worth of dyno runs on it (hence there's lots of different lines) . Much easier to see on this one No wonder it flew

[Pipster007]

Forgive me for just giving a quick glance over this post, but so far Toby seems to be the first one to bring up this "magic word" of CALIBRATION

 

Is there any one particular company that calibrates ALL rolling road systems throughout the country or is it something that is installed from a manufacturer and then "tested" annually by some company who lives locally.

 

When it come to garages, I personally don't know the ins and out of how they operate. I am aware that brake rollers are tested by someone from the ministry or VOSA or whoever, so that must mean there is a set of perameters to be attained by MOT stations.

 

Does this extend to rolling roads

 

Sorry if this has been previously answered, but I'm slightly tiddled at the mo

[Guest MK1gaz]

Torque of the Devils self calibrates every day , plus it's brand new

[marky4]

would be interesting to do this experiment in a newish car to see how close the read outs are to the manufactures figues

[Toby]

Can i just ask a silly question?

 

Wouldnt running the car in 4th bring a lower figure? CAn someone explain this to me? When my car was run on the rollers it was done in 4th??

 

All ford boxes are 1:1 in 4th so you don't have gearbox losses cos theres no (almost no) friction lost in the GB. only in the axle where the force of the engine is "grinding" the teeth together.

[Toby]

Torque of the Devils self calibrates every day , plus it's brand new

 

It must get up early!!

 

(good torque BTW on your second example of graph! )

[Guest MK1gaz]

Torque of the Devils self calibrates every day , plus it's brand new

 

It must get up early!!

 

(good torque BTW on your second example of graph! )

Where your 190+ bhp Sanspeed one then ? Have you been on any others or is it only me and Boxxer that does ? P.S. i have more

[Pipster007]

Torque of the Devils self calibrates every day , plus it's brand new

 

But is there a set of perameters for rollers to be within, is what I'm asking as I said before. I don't know

[Guest MK1gaz]

you would hope so but i reckon they all guess !!!!!!!

[Toby]

Torque of the Devils self calibrates every day , plus it's brand new

 

It must get up early!!

 

(good torque BTW on your second example of graph! )

Where your 190+ bhp Sanspeed one then ? Have you been on any others or is it only me and Boxxer that does ? P.S. i have more

 

Got to take it to work - don't have a scanner at home! Tomorrow.

 

Oh and got to sketch a line on it yet!!

[Guest MK1gaz]

Just take a pic with a digital camera mate . That's why mine are so good and clear !!!!!!! hurry up as i'll have to go downstairs and talk to the Mrs soon !!!!!!!!

[boXXer]

lol! i red crayon will sort that out a treat!

[Toby]

Ok give a mo!

[boXXer]

[Guest MK1gaz]

Come on pre-x-flow boy

[w p e]

hes putting a ROLLER film in ill get me coat

[Toby]

 

And another...

 

 

ONE MILLION GIGAWATTS!!

[Toby]

Note hand brake on - and showing up on the first graph

[Toby]

hes putting a ROLLER film in ill get me coat

 

Well I do like old things!!

 

Quite like you Wayne

 

Runs in 4th BTW

[Guest MK1gaz]

We need to see Pete's biro calculation on the top right corner or elses it's un-official

[boXXer]

hes putting a ROLLER film in ill get me coat

 

 

[boXXer]

We need to see Pete's biro calculation on the top right corner or elses it's un-official

 

 

[Toby]

We need to see Pete's biro calculation on the top right corner or elses it's un-official

 

Just read it and weep 16 valve boy!!

[w p e]

so we talking wheels or f/wheels figures as dont rollers give wheels figures and a gestamate of f/wheel

[bortaf]

Firstly Nice one to Boxxer nice to see somone taking the time to actualy try something instead of theorizing about it

 

And respect to Steve for not only being open enough to put his figures out there for comparison but to also pay for it

 

I will add that on one session i had on a RR, (a day long freeby fiddle and tuine up from a mate back in the early 90's), my engine ran soo much better at the end of the day but only gained 2 BHP over the fist morning run but it felt like a dam sight more than 2 on the road, re running it next moring it was 16 up, 18 in total, i guess running in the morning on a RR next to a river in august made all the difference