Variable Throttle Body Trumpets

[Glos_pug 13 1 Cars]

This is the only known Peugeot 205 GTI running a system like this. I thought some of you maybe interested to see. The system uses a compressed air kevlar cylinder thats mounted in the engine bay. This is fed to the electronic actuators that direct air to each ram. Its run by the data logging ecu built by the previous owner and adjusts the length of the throttle body trumpets to gain maximum power and torque at different RPM's.

Due to how fast it runs out of charge it would need to be recharge using a cylinder of compressed air after each run. This was all done for lightness rather than using a motor.

Some may remember the car as it was built by 2 F1 Engineers and was a well known car within Midland Hill climbing during the 90s.

 

[Kane 34]

Seen your thread over on uphill racers, certainly one of the most high tech 205's about. Lovely looking car!

[Glos_pug 13 1 Cars]

Cheers :-)

First hill climb this year at Prescott soon. 2 other top 205 hill climb cars in the uk with be racing also should be a good one.

[Dj_mini 7]

sound like one to watch satch and ralph there as well i take it?

[Glos_pug 13 1 Cars]

Yep :-)

[aldworth33 45 1 Cars]

Saw this on Facebook looks a cool car

[johnnyboy666 195 1 Cars]

Have you got a link to a build thread? I'd certainly like to have a look through!

[Glos_pug 13 1 Cars]

It was built in 1988 from a shell by Ace Engineering. From 1991-2014 its been developed to what it is now by 2 F1 Engineers who used it as a test bed. A lot of the work has been kept secret as it is a competition car ,it has many one off parts fitted like the inconel Exhaust Manifold and titanium mounts to name a few.

[Glos_pug 13 1 Cars]

https://youtu.be/83lgJKvJ-5U

 

A good first event at Prescott. Got my time down to 46.47 to take 2nd place behind Colin satchells 44.8 iirc. But for a first drive on the hill it went incredibly well.

Edited May 10, 2016 by Glos_pug

[blandy 29]

Looks impressive

[johniban 59 1 Cars]

What suspension set up is on the rear of that? looks very stiff

[Glos_pug 13 1 Cars]

It runs upright coilovers

Edited May 16, 2016 by Glos_pug

[Kane 34]

Probably not something you'd care to share publicly what with it being a competition car but could you give a few more details on the rear setup? Do you retain an active TB or is it controlled solely by the vertical spring/damper?

 

Also with regards to rear droop I see that the car has a tendency to lose the back end slightly when under heavy breaking and cornering. Do you think this effect could be lessened by increasing droop at the rear or would you say the cornering ability when pushing on outweighs and drawbacks from the setup? Also is your droop controlled by the dampers themselves or do you have an adjustable droop limiting device in place?

 

As mentioned before car looks ace and appeared to be going well judging by the times you achieved at prescott.

[Glos_pug 13 1 Cars]

Kane,

TB has all gone its just not needed. Im not sure why everyone on uphill and other forums are loosing their mind regarding "That picture at prescott" LOL. The track was soaked from a heavy down poor the night before and there were some 15 plus cars that all span around that part of track on their first practice runs. This is a 620kg car and the rear has very little weigh so just like Satchells the rear comes off the floor slightly once the Ap's are on hard. With how its set now I really enjoy throwing it around and in the corners its ridiculous just how well it handles. You got to remember though just who set this up and with the equipment and logging that was used (They were not Some so called tuners down a back street)

With adjusting the droop etc you would dramatically change how it handles in the bends. There was a reason why they kept it like this and by the afternoon runs once it dried up it was very predictable with how it could be driven.

46.47s was a good time concidering it was my first event in it. The runs didn't even feel that fast to be honest and I wasnt exiting the car shaking at the end haha. Im still very much getting use to changing gear with my right hand also so after a few mishifts and parts like Pardon where I need to ride the clutch slightly its got at least a number of seconds in it easy.

[welshpug 1,657]

620?! crikey! thats lighter than colins!

 

im not sure of colins specific rear spring rates but the front i know is nowhere near what some would suggest using, no arbs at all.

[Glos_pug 13 1 Cars]

Yeah its very light, lots of inconel , carbon kelvar and titanium parts to help get it down that low mind ;-)

 

I know what Colin runs but its softer than ours. He seems to like it that way though and its nice to see different ideas rather than everyone following the same trend.

Edited May 17, 2016 by Glos_pug

[Kane 34]

Not losing my mind at all, well at least not any more than usual I was just interested in how the setup performed as I'm trying to gather data from people's experiences of turreted rear ends. Starting my own development with a car and would be handy having a starting point to work from.

 

As mentioned in my previous posts the car definitely seemed to be working well as the times for the first proper outing speak for themselves. Anyways best of luck with the rest of the season.

[Glos_pug 13 1 Cars]

Oh sounds interesting a hill climb car? Trouble is we can only do so much to keep within the regs for what we do. Other forms you can do what you like. Mine has also got a very special front suspension set up from Gould Engineering also which helps.

[Kane 34]

Aiming to build it to mod prod and compete in the Scottish hill climb championship yes. May be quite some time until it's ready though as the new house and upcoming wedding is somewhat draining the bank account.

[johniban 59 1 Cars]

Any chance of some pictures of the underside of the rear ?