Minicooper
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| posted on 16/4/24 at 09:45 PM |
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RWD Steering Rack
Hello all, anyone know of a rwd steering rack around 500mm between pivot points. I thought the MG Midget steering rack could possibly be suitable, but
I can't any mention of the measurement between pivot points. maybe a morris minor rack again can't find any measurements, thanks in
advance
Cheers
David
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nick205
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| posted on 17/4/24 at 08:21 AM |
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Can't help with a rack suggestion.
However...
What's your application (might help people suggest something)?
When I built my MK Indy, MY Engineering modified the Ford Sierra rack to narrow it (i.e. bring the pivot points closer together to better align with
the chassis width). Admittedly they had to dismantle the rack, modify parts on a lathe and then reassemble the rack.
 
Rescued attachment img_7.jpg
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nick205
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| posted on 17/4/24 at 10:26 AM |
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Smart car is RWD and small/narrow - could be an option.
Renault Twizy is very small/narrow, not sure on geometry, but might be worth a look.
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MikeR
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| posted on 17/4/24 at 01:58 PM |
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Didn't Russ recommend a rack he used in his furoe (or however you spell it) from an early cinquenenco (or however you spell that).
Might be worth checking the archives.
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Minicooper
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| posted on 17/4/24 at 03:22 PM |
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Thanks for the reply's.
I have looked at the suggestions but they are not suitable. I'm using top and bottom wishbones so a lot of the macphearson strut steering racks
have extra long track rod arms so the pivot points are completly in the wrong position. The cinquenenco rack is behind the crossmember so turns wrong
way.
As I am making the wishbones there is a certain amount of adustment available probably 475mm to 525mm but ideally 500mm.
Looks like nick's suggestion of machining a readily available rack like the escort to exactly what I need is the most likely solution.
Anyway before I do that I would like to rule out the MG midget steering rack, I shall continue to look for the pivot point distance of said rack
Cheers
David
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russbost
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| posted on 17/4/24 at 05:39 PM |
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What difference does it make whether it's RWD or FWD if the rack is the right dimensions?
The Cinquecento is same as Seicento & was the smallest readily available production rack I could find, distance between ball joint centres is
approx 400mm
See this thread Thread
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Minicooper
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| posted on 17/4/24 at 07:46 PM |
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It's because most fwd racks are behind the crossmember so when you turn the steering clockwise the car turns to the right, put the same steering
rack in front of the crossmember like most of rwd racks then the same clockwise turn of the steering will turn the car to left. I know you turn
steering racks upside down and all that but it's far easier if there is a rack suitable that can be used in a conventional manner
David
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russbost
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| posted on 18/4/24 at 08:28 AM |
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quote:
Originally posted by Minicooper
It's because most fwd racks are behind the crossmember so when you turn the steering clockwise the car turns to the right, put the same steering
rack in front of the crossmember like most of rwd racks then the same clockwise turn of the steering will turn the car to left. I know you turn
steering racks upside down and all that but it's far easier if there is a rack suitable that can be used in a conventional manner
David
The Fiat rack, although RWC is behind the X member, so I turned it upside down, dead easy, you'd never know that's not how it was meant to
fit, places the input spline to the left of the column
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Minicooper
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| posted on 18/4/24 at 11:06 AM |
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quote:
Originally posted by russbost
The Fiat rack, although RWC is behind the X member, so I turned it upside down, dead easy, you'd never know that's not how it was meant to
fit, places the input spline to the left of the column
My car is right hand drive though, so the input to the steering rack would be on the opposite side to the steering wheel and also facing away from the
steering wheel.
For use in a single seater width car like yours it's fine and can be made to work well, for me it doesn't and it's not anywhere close
to 500mm either.
Cheers
David
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nick205
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| posted on 18/4/24 at 12:41 PM |
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quote:
Originally posted by Minicooper
Thanks for the reply's.
I have looked at the suggestions but they are not suitable. I'm using top and bottom wishbones so a lot of the macphearson strut steering racks
have extra long track rod arms so the pivot points are completly in the wrong position. The cinquenenco rack is behind the crossmember so turns wrong
way.
As I am making the wishbones there is a certain amount of adustment available probably 475mm to 525mm but ideally 500mm.
Looks like nick's suggestion of machining a readily available rack like the escort to exactly what I need is the most likely solution.
Anyway before I do that I would like to rule out the MG midget steering rack, I shall continue to look for the pivot point distance of said rack
Cheers
David
Hi David,
Might be worth phoning a company that sells or refurbishes MG Midget racks. They may be willing to measure the rack for you.
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jacko
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| posted on 18/4/24 at 07:37 PM |
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From what I have found the midget mk111 1500 and the morris miner had the same rack
If this helps
It’s off google so may be wrong
555
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