E24 6 series Rolling Road Shootout

First event of the year i am organising is now approaching. It's a six series rolling road shoot out as i am sure this has never been done before. If this proves to be successfull then i will go through or get someone else to organise one for each of the different models.

The Venue is G Force Motorsport in Aylesbury

The Date is Saturday 18th February 2006

Start time is 8am

Numbers are limited to 15 cars although i will take another 5 to have on a reserve list in case of no shows.

I have to send a deposit to the rolling road in about 10 days so will require some cheques from people allready signed up like now.

The list so far

1. Me James (Sohlman)      &nbs p;      635csi Artic Blue, Modified induction and Frits exhaust Manual car

2. Ross Harris with three cars: - M635csi Concourse Remapped

3. Ross Harris                           M635csi Standard

4. Ross Harris                            635csi Standard Auto

5.Brian Jordan with two cars: - M635csi Standard

6.Brian Jordan                          M635csi Racecar heavily modified and around 350bhp

7.Graham Mitchel          ;           ;  635csi Standard auto

8.Dave Jerome                          635csi highline with K&N induction, custom exhaust and chip remap

9.Ivan Tan Standard        &nbs p;       635csi Auto 3 speed

10.Tone Crane         & nbsp;         & nbsp;    635csi with NOS Auto

11.Abbas        &nbs p;         &nbs p;         &nbs p;  M6 Highline Standard

Currently i have classic cars magasine potentialy comming down to do a feature and will contact total and BMW car once i have paid a deposit. Spectators will be welcome although it will be cold.

To check out the rolling road days credentials please have a look at their web site on:  -http://www.g-force-motorsport.co.uk/

Anyone interested in comming to this should contact me ASAP by either PM or via mobile on 07946 517556

Happy New Year

James

A rolling road is a machine you strap your pride and joy to. Then an engineer runs the car on this machine and takes the car up to it's red line. This then records it's power and torque curve. The car is strapped down as it's like you or me being on a treadmill. The car is actually not moving, but on it's speedo it will be doing something around 140mph.

A shootout is when you have a number of the same car going on the same set of rollers on the same day where they can be compared against one another.

Hope this clears this up.

James

What's the cost of this self-inflicted pain James?

I'm interested but being at the other end of the country . . .

Sorry Ivan. My mistake. IVAN'S CAR IS A 4 SPEED

The cost all in is £40 per car. For this you will get 30 - 40 mins on a rolling road with the engineer. The car will most likely get 2-3 runs untill an accurate figure has been achieved. Auto's take a lot longer as the kick down has to be deactivated.

The water levels, oil levels are checked before the car goes on. As are the tyre pressures to ensure they are set at the correct level as this can affect readings. If the engineer has any doubts about the car he won't let it on as he does not want a car going bang on his roller.

At the end of the day you will get a coputer print out detailing power at the wheels, estimated power at the flywheel, torque at fly and wheels and lamda readings throughout the runs.

James

James, I'm in, where do we send a cheque to?

M635csi - standard.

 

Regards,

Rohan

Sure why not Ivan, good idea.

Only started her for the first time in 4 months yesterday. Keen to take the injectors out and have them cleaned first.

Regards,

Rohan

Sohlman wrote: Auto's take a lot longer as the kick down has to be deactivated.

Not really - just run it up in third gear or switch it to 'S'.
Also switchable autos have no kickdown cable to
disconnect! It should be stressed that automatics
always give a vastly inflated power figure due to the
lack of engine braking in an Auto. I don't know what
dyno and power plot system G Force have though.
Should be interesting!

Drew540i wrote: Not really - just run it up in third gear or switch it to 'S'. It should be stressed that automatics always give a vastly inflated power figure due to the lack of engine braking in an Auto.

Surely just switching to the 3-2-1 setting will lock the car in whichever gear & prevent kickdown taking place. As the transmission also has lockup in 3rd there will be engine braking - that's one of the things it's there for.

SMG is a different kettle of fish altogether as are
modern BMW's with traction control - because the
front wheels are stationary and the rear ones are
going round, the ABS sensors pick up on this and
retard the timing, a by product of ASC+T as well as
the current system. That's probably why the SMG
system was having trouble.

As for disconnecting the ECU and someone in the
engine bay on the throttle, well that's just madness.
We (well, my old Fella) ran a dyno for almost 20
years, developed the system that BMW(GB) use at
Bracknell and did countless dyno runs on Automatic
BMW's and never had to do any of that. Indeed, I can
remember our dyno being calibrated and checked
using a B plate 525i Automatic! Just leave it in third
gear of as Andy so rightly said, switch it into 3-2-1.

£40 for three runs is cheap enough though. It's worth
doing because the dyno operator can look at things
like mixture.

I think the normal fee is £120 an hour or around £400 for the day. Generally rollers are quite pricey, but getting a load of cars down makes things a lot cheaper. Tells you less, but you gets what you pay for in life.

James