Geo with Mark from Banchory

Post by **Shug** » Mon Apr 24, 2006 4:03 pm

RICHARDHUMBLE wrote:Forgot to add, Cairn o Mount was horrible, no traffic and the sun was out.

You wouldn't have enjoyed it at all, I wish I had been at work too

bawbag......

Rich H · Post by **Rich H** » Mon Apr 24, 2006 4:19 pm

Going to work now

gordon · Post by **gordon** » Mon Apr 24, 2006 9:57 pm

RICHARDHUMBLE wrote:In the end I settled for

Camber -.9 F -2.1R
Toe out 'a bit' front, in 2mm R

Feels fantastic. Nice and sharp turn in and loads of confidence into corners.

Rich

Thats just a ballhair of my settings now. (i run a bit more camber). Glad you like it. Running less camber as you are will make the car better on the road and calm the slight twitchyness down. It's the front toe out that makes the car turn so precisely and sharp. The camber and the rear toe will give the confidence and feeling of "chuckability" your getting. Too much rear to makes the car feel dead, but also exaggerates lift off oversteer.

Post by **simon** » Mon Apr 24, 2006 10:37 pm

I've also got to say Mark is a top guy and really good at geo setup. I've got slightly more camber on the front, between -1 and -1.1 and I think about 2.2 rear. Toe was about 0.5mm out at the front, can't remember what it was at the rear. He also adjusted the castor to ensure that the car doesn't pull left anymore

I thought it felt light at the front at first but a few miles later coming over the cairn I started pushing it and it felt really solid.

Looking forward to KH on Saturday to try it out

As Rich said, Mark is very good at explaining everything to you. It makes you very comfortable with what he's doing and helps you understand a bit more about your car if you don't know already.

Highly recommended

Rich H · Post by **Rich H** » Tue Apr 25, 2006 12:04 am

gordon wrote:
Thats just a ballhair of my settings now. (i run a bit more camber). Glad you like it. Running less camber as you are will make the car better on the road and calm the slight twitchyness down. It's the front toe out that makes the car turn so precisely and sharp. The camber and the rear toe will give the confidence and feeling of "chuckability" your getting. Too much rear to makes the car feel dead, but also exaggerates lift off oversteer.

That was the plan

thanks for the help!

It's also the settings we (Well he!) got with the removal of a thin (1mm) shim from each corner. seemed to give -.5 deg per mm or so. Figured that -1.4 on the front may chew my tyres a bit too much and the rears were similar, didn't fancy -2.6 on the rears! Mark suggested that I start on the softer side and adjust later if required.

Corner weighting was within 9kg on the front and 12kg on the rear (Bias towards my lardy frame) Close enough for government work. Caster was a bit wonky, 3.7L 3.4 right but within tolerance (And time limits!) not noticed a difference L to R though

Rich
(Grinning even more faction)

robin · Post by **robin** » Tue Apr 25, 2006 8:30 am

I think the castor is always a bit more on the left than the right to make sure the car tends to aim for the kerb when you have a heart attack!

How much difference there is side-to-side depends on whether your car was built before or after lunch

Robin

Post by **simon** » Tue Apr 25, 2006 8:59 am

I actually can't get any more negative camber without lowering the car. I've got 1 shim in the right hand side and none in the left so that's my limit!

Rich H · Post by **Rich H** » Tue Apr 25, 2006 9:18 am

robin wrote:How much difference there is side-to-side depends on whether your car was built before or after lunch

Robin

Mine was built after lunch,
on a friday,
before Christmas,
before the guys working on my car got sacked for being useless buggers!:roll:

But I thought they were all like that?

There was a guy here who was a Lotus tech (Got a certificate too!) He fessed up to a few shortcuts they all took when building them.... Especially the copious abuse of and improper fixing of crappy plastic fasteners, Duct tape and rawl nuts.

caleebra · Post by **caleebra** » Mon May 08, 2006 2:53 pm

anyone got a phone number for Mark?! Might see how he is looking this weekend!

woody · Post by **woody** » Mon May 08, 2006 7:15 pm

RICHARDHUMBLE wrote:
robin wrote:How much difference there is side-to-side depends on whether your car was built before or after lunch

Robin
Mine was built after lunch,
on a friday,
before Christmas,
before the guys working on my car got sacked for being useless buggers!:roll:

But I thought they were all like that?

There was a guy here who was a Lotus tech (Got a certificate too!) He fessed up to a few shortcuts they all took when building them.... Especially the copious abuse of and improper fixing of crappy plastic fasteners, Duct tape and rawl nuts.

I thought you worked with jet engines - must know a few short cuts yourself

There's a chap at my work (Calum Hume) whose a race engineer with the Legends at weekends and has the full geo rig with corner weights at his farm. I've had a few discussions with him about doing the geo on elises

Sanjøy · Post by **Sanjøy** » Mon May 08, 2006 8:31 pm

and ....

Post by **simon** » Mon May 08, 2006 8:31 pm

caleebra wrote:anyone got a phone number for Mark?! Might see how he is looking this weekend!

His phone number's here:
http://www.mhengineering.co.uk/

and where have you been hiding?

woody · Post by **woody** » Mon May 08, 2006 8:41 pm

Sanjoy wrote:and ....

well he can do it, its just a question of what time he has....

Lawrence · Post by **Lawrence** » Mon May 08, 2006 8:52 pm

You may find Mark at Fintray Hillclimb, Dyce this weekend

caleebra · Post by **caleebra** » Tue May 09, 2006 12:02 pm

simon wrote:
and where have you been hiding?

On various boats over the last few weeks (work!), and just generally been really busy since the winter so I've totally fallen behind on the fori front

Good to see this place really thriving though!!