Striker geometry

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Taff Striker
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Name: Richard Jones
Location: Wild West Wales

Striker geometry

Postby Taff Striker » Mon Jan 07, 2013 8:51 pm

Build is coming to an end now with the car being mapped on the rolling road ready for some safe running in miles. Next on the list is geometry set up and MOT.
Does anyone have ball park figures for toe, caster and camber for the escort type uprights please?

Cheers, Rich ;)

philfingers
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Name: Phil of course
Location: Kidderminster, Worcestershire, UK

Re: Striker geometry

Postby philfingers » Tue Jan 08, 2013 11:04 am

you could take a look through here, when I did my Phoenix viewtopic.php?f=4&t=590&start=30
I'll be checking the striker in about a week, most fo the work is coming to an end, I should really update the thread!
STM Phoenix R1 IRS Quaiffe reverse & LSD
Sold- Sylva Striker 1660 XF, 40s live axle
Sold- Sylva Phoenix- 1300 XF, 234, 40s live axle.
205 mi16 tarmac rally car, Audi A6 2.7 TDi S-line and a few motorbikes

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RobMsport
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Re: Striker geometry

Postby RobMsport » Tue Jan 08, 2013 5:42 pm

Taff Striker wrote:Build is coming to an end now with the car being mapped on the rolling road ready for some safe running in miles. Next on the list is geometry set up and MOT.
Does anyone have ball park figures for toe, caster and camber for the escort type uprights please?

Cheers, Rich ;)


Obviously drive it to adjust to driving style but these are the parameters I'd start at ---
TOE ------ Straight ahead or just 1 to 2mm's toe in across both wheels in total .
CASTOR -- Not less than 3.5 but more feels good in slow tight corners plus better stability at high speed ---- explain if you PM
CAMBER -- 1 to 2 degrees negative depending whether track or road also whether an ARB is fitted.

RE - CASTOR
If you're wondering how to check it without equipment , look down from the top centre of the top outer upright pin/bearing --- it should be well back from the lower upright centre pin/bearing. Say 30mm min up to 60mm max.

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Taff Striker
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Re: Striker geometry

Postby Taff Striker » Wed Jan 09, 2013 8:43 pm

Thanks for the input guys.
Rob, I am running an anti-roll bar so should I tend more towards 1 or 2 degrees?. Unfortunately most things are a compromise but I would say I'd be tending more towards a track set up.

It's being set up using the wheel alignment equipment at my local Mazda dealer! Mates rates and all that :D

Rich ;)

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RobMsport
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Re: Striker geometry

Postby RobMsport » Thu Jan 10, 2013 8:44 am

Taff Striker wrote:Thanks for the input guys.
Rob, I am running an anti-roll bar so should I tend more towards 1 or 2 degrees?. Unfortunately most things are a compromise but I would say I'd be tending more towards a track set up.

It's being set up using the wheel alignment equipment at my local Mazda dealer! Mates rates and all that :D

Rich ;)


I would run close to 2 degrees then but keep tyres around the 14 to 16 psi on track depending whether a short blast or circuit sprint , obviously a touch higher for road . Check temperatures across the front tyre section OUTER/MIDDLE/INNER provided you've been really on it on track , once immediately back in the paddock ---- within 6 degrees will indicate the camber is close to perfect OR if the rubber is rolling off the tread evenly.
I forgot to ask what you weighed ? RAKE !!! Start off with 25mm's then adjust up to increase oversteer or down to increase understeer --- whatever suits your driving style.

micha
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Re: Striker geometry

Postby micha » Fri Jan 11, 2013 10:56 am

depending on which kind of front you have, only tracking (toe) is adjustable. i prefer to drive my car with 0, maybe a slight toe-in. checking most track-day cars: they are set with toe out.

does your car use the casted escort TCA on the bottom?

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Taff Striker
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Re: Striker geometry

Postby Taff Striker » Fri Jan 11, 2013 10:28 pm

I've made new bottom arms which are adjustable - just hope I've not made them too wide :?

Ignore the ARB by the way :oops: Now have an inboard design

Image

Image

Having a few teathing problems on the rolling road at the moment so wont get round to this until the week after next I recon :roll:

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Taff Striker
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Location: Wild West Wales

Re: Striker geometry

Postby Taff Striker » Sat Feb 02, 2013 8:54 pm

Electrical problems nearly resolved so stupid question number 4 re:set up :oops:

Should the rake be high at the rear to low at the front or vice versa?

Here's the current ARB set up - stil work in progress :roll:

Image

Cheers, Rich ;)

jeffw
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Re: Striker geometry

Postby jeffw » Sun Feb 03, 2013 8:27 am

Rear should be higher. Your ARB looks like a copy of what Rob Farley makes and sells.

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RobMsport
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Re: Striker geometry

Postby RobMsport » Sun Feb 03, 2013 11:29 am

jeffw wrote:Rear should be higher. Your ARB looks like a copy of what Rob Farley makes and sells.


Correct -- rear higher BUT I wouldn't like to drive your car Taff with the ARB bottom link in the hole closest to the ' bar ' :o


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