[race_prep] Guernsey Hillclimb 205 Build

[welshpug 1,661]

spot on Davey

[wardy18 33 1 Cars]

Thanks guys, i have registered so just have to wait to be authorised, i will put my name down for the 23mm Torsion Bars if i cant get hold of another pair but i would like to get at least the ARB fitted for the next event on the 27th Sept so will go with the Shenpar 24mm that Nick has aside for me, at least then i can almost match the front 350lb springs with a 24mm ARB and 21mm TBs on the rear.

[welshpug 1,661]

Do check the width of the beam, I don't know if the beam is the same as the one I helped fit a few years back, worth a few minutes with a tape to make sure

[wardy18 33 1 Cars]

Do check the width of the beam, I don't know if the beam is the same as the one I helped fit a few years back, worth a few minutes with a tape to make sure

 

Assume you mean to check if it's a 205 or 309 beam? Do you know what the difference in measurements is?

[wardy18 33 1 Cars]

No worries got the measurements as follows

 

Rear beams

 

205 GTi

TB 99.3

ARB 109.5

 

309 GTi

TB 102.8

ARB 113

[wardy18 33 1 Cars]

Checked this morning and can confirm it is a 205 beam, measured the TB's which came out of it in replacement for my 21mm pair and they are 18.9mm and also measured the old ARB which came from my last 205 beam (removed it for spares) in the one i crashed and it was only 16mm which i thought was a bit odd as would have also expected it to be 19mm, i didnt swap this into the new beam from Boombang as i knew it was standard but strange how its only 16mm.

 

Anyway, ordered the 24mm ARB from Shenpar this morning so will at least have that and the 350lb springs on for the next event on the 27th and if all goes well and funds allow a set of 23mm TB's!!

[johnnyboy666 195 1 Cars]

16mm might be a base model arb iirc

[wardy18 33 1 Cars]

So the final order of suspension upgrades on its way to me now is:

 

350lb Eibach Springs

24mm Rear ARB from Shenpar

23mm Rear PTS Torsion Bars

 

Another hopeful upgrade for the next event will be the Launch Control DTA has programmed in, or what it actually is is Traction Control to a designated cut off speed. Have spent the weekend looking into Hall Effect Sensors and think i have bought a good set up, ended up buying a Unipolar Magnetic Hall sensor http://uk.rs-online.com/web/p/hall-effect-sensors/1895506/ which picks up individual changes in magnetic fields, ie small magnets placed equal distances.

 

Have planned to bond the magnets as shown in Red in this picture and bracket the sensor to read from these magnets, obviously the more magnets i add the better the signal will be so i am thinking maybe 10.

 

Edited August 19, 2012 by wardy18

[wardy18 33 1 Cars]

Magnetic Hall Effect Sensor arrived AND the little magnets too so made up the bracket last night ready to fit, just need to Epoxy the magnets to the hub and extend the wires to the ECU then its a matter of ECu settings and off we test.

 

Any advice please on the best possible adhesive to attach the magnets to the hub? I was thinking that 2 Part Epoxy Resin, will have to ensure i have a good key on the hub beforehand too.

 

[wardy18 33 1 Cars]

So doesn't look like I'm going to have much of the upgrades on for Monday's event, phoned Demon Tweeks yesterday to query why I hadn't had the Eibach springs only to be told they cannot supply these for 2 or 3 months and "apparently" had emailed me, well I'm constantly in my emails and have nothing!!! They were tryin to sell me Faulkner instead which is half the price and half as good as Eibach so I the best compromise was 375lb Eibach springs which they had in stock!!

 

Haven't received the PTS 23mm torsion due to couriers but I have received the 24mm ARB so going to get that fitted tomorrow while I adjust the rear ride height which as it stands now is 10mm lower than the front, so raise up 20mm should sort that out!!

 

Also magnetic hall effect sensor is fitted to the rear hub and the magnets glued to the hub, just need to test then wire into the ecu!! Really want to start testing launch control Monday

 

[Miles 331 1 Cars]

You find that allot with Tweeks, they sell the pages to companies then just place the order on them so keep very little, getting more common these days to save have ££ on the shelf

[Batfink 201]

I supply a brand to DT and they haven't bought stock yet...I'd be really quite happy if they did....

[wardy18 33 1 Cars]

They're normally pretty good, always been very very quick before, ie i have called back no more than 2 hours after placing an order to amend and couldn't due to it having been picked and packed already!!

[wardy18 33 1 Cars]

Been a hard day, hall effect wiring adjusted, broken driveshaft changed (no more 309 spares left now), 24mm ARB fitted and arse raised by 15mm.

 

At least I can now see how the uprated ARB and setting the rear ride height will improve before fitting the new springs and torsion bars!!

 

Now fully involved in beer and home brew wine!!! Need to reward myself for a hard afternoons work

[wardy18 33 1 Cars]

Just wondering, is it ever a done thing to pre load the rear anti roll bar??

 

When I bought my last 205 which was race ready the guy had drilled a second hole below the existing securing bolt hole in the LH ARB end plate, this means the LH trailing arm needs to be pushed down slightly to the ARB can be secured in the new lower end plate hole!!

 

In my mind this does kinda make sense as with the ARB already being slightly under tension it will be pushing down harder the LH trailing arm and so balancing the rear corner weights better and possibly counteracting a little rear wheel lift round left hand corners!!

 

Opinions anyone??

[Cameron 16]

That's only going to work one way though isn't it, so you'll end up with more roll round LH than RH corners.

 

I'm a bit confused and can't remember your reason.. why are you raising the rear to be higher than the front?

[wardy18 33 1 Cars]

Umm just from advice on set up I have had and it's always been the same from different reliable people, is this not correct?

 

Rear is now approx 5mm higher than front, it was 10mm lower!!

[Cameron 16]

No, I was just curious! Will be very interested to see what you make of your new setup and how it affects your times.

[wardy18 33 1 Cars]

As long as it don't put me in the wall I'll be happy!!!

 

I was chatting to a guy who marshalled at my last hill and was quite shocked when he explained that on one of my earlier runs in the day I came into sight broadside and left his sight still broadside, he loved it but I remember that run well as it was full commitment to keeping that throttle pinned so not to throw it in the wall!!

 

The trouble with suspension changes that concerns me is that I have maybe 5 runs get to grips with a different handling car so the 1st couple runs are very important to get a feel for the car quickly and not be a pansy but then not stick it in a granite wall, remember there's not one run off area or field I can bury into at Le Val De Terres, it's granite walls all the way

 

Will update tomorrow as the day goes on!!

 

27th Aug set up

 

300lb Springs

1.5deg -ve camber

??? caster but matched LH &RH

Std front ARB

24mm rear ARB

21mm rear torsion bars

Pressures FR 28psi, RR 24psi

Ride height 5mm higher at rear

Edited August 26, 2012 by wardy18

[wardy18 33 1 Cars]

Going well so far buy it started of very patchy as we had a big rain fall early this morning and being that most the hill is under trees it takes a while to dry out

 

Car feels very good, have started the suspension dampening on half hard/soft to start with, not sure which was to adjust really, will leave as is until I get a proper full speed run.

 

PB 34.12s

 

Practice - 41.??s

1st timed run - 35.22s

[wardy18 33 1 Cars]

So results, could only get within 0.4s seconds of my pb so not best pleased, although it was a little greasy from the rain showers this morning.

 

I was finding that left hand corners grip was good and controllable understeer but round right hand corners, waste of time!!! Lost me so much damn time and have no idea why!!

 

I know it probably didn't help me fitting the 24mm ARB along with my 21mm torsion bars and not having the new 375lb springs on the front...

 

Any ideas?

[Cameron 16]

Forgive my laziness, are you running a limited slip diff?

[wardy18 33 1 Cars]

Yes, gripper just been rebuilt a few meetings ago

[Cameron 16]

It could just be that the right handers were greasier than the lefts, especially if they were under trees.. sap can be pretty slippery! You didn't do the whole preload the rear ARB thing you talked about on the last page did you?

[wardy18 33 1 Cars]

Yeh I walked the hill after and the pavement on the right hander which is a good 4 to 5 ft wide so would normally have over half the car on it was still green after a days worth of racing so I suppose having the inside wheels on this have them no traction so relying totally in the outside wheels

 

No definitely did not do the preload thing