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Home > General Chat > top arm angle on very low cars

D4VE

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lowestoft suffolk

I mentioned about putting rack in toeboard and then see the new Mighty Car Mods episode.. he mentions he'll be putting the rack in the toeboard somehow.. but wont find out til next episode now

On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol

NOTHING GETS PAST ME!! *tongue*

1/4 mile 14.7 @ 96mph 12psi boost
Showdown class A 2nd place 18.6 @ 69mph


evolotion

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Glasgow, Scotland


As mentioned the k hubs have many benefits but the upper balljoint is aprx 30mm higher than the a-series upper balljoint w.r.t the hub centerline so simply fitting k hubs raises the car. This was my main motovation for raising the upper arm as even at a normal ride height the arm angle.was terrible

On 31st Dec, 2016 Joe C said:
just thinking out the box here.... what might work well is...

Metro K series hubs,

the bottom joint is outboard of the hub so should move the outer lower pivot point out and down, reducing scrub radius and allowing lower ofset rims, also longer arms can be used,

a lot of work though...

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.


Aubrey_Boy

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On 4th Feb, 2017 D4VE said:
I mentioned about putting rack in toeboard and then see the new Mighty Car Mods episode.. he mentions he'll be putting the rack in the toeboard somehow.. but wont find out til next episode now


The following image is the actual part that Minitec supply to create the recess in the toeboard for the steering rack to move back in to:



So I expect this is what you will see appear in their next episode.

Link to the parts required for RHD cars: (Includes rack mounting brackets)

http://www.superfastminis.com/products/RHD...ion%20Guide.pdf

I did it slightly differently, I fitted a new Heritage toeboard but moved the whole of it back and up purely to allow the clearance for the rack as I didn't want to have an obvious chunk cut out of the toeboard, like the boot floor I am doing now it was a lot of work but worth it to have something that looks more OEM.

Then by mounting the rack on the subframe it is more rigidly attached and I can fine tune the bumpsteer by shimming its height rather than having to create something at the steering arm end to fix the bumpsteer.

Edited by Aubrey_Boy on 5th Feb, 2017.


robert

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uranus

its scary to think of the rack mounted on the body ,and the steering arms hubs etc mounted on the subframe .

so any subframe movement will, if the steering wheel stays the same position ,effectively re steer the car .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM


JetBLICK

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Droitwich



On 4th Feb, 2017 D4VE said:
I mentioned about putting rack in toeboard and then see the new Mighty Car Mods episode.. he mentions he'll be putting the rack in the toeboard somehow.. but wont find out til next episode now


Yes! I was thinking about what u said then saw the mcm thing. As mentioned the problem I see is you have to cut the body, which in turn alters your pedals. Also I feel like if I can get away with changing a component rather than extensively modify the shell, then at least i can go back, or the problem is isolated if it doesn't work.

That being said I like how they've mounted the rack to the subframe on the minitec kit, if ur going to relocate it you may as well, makes a lot of sense and would make modding the floor a simpler task too.. Mmm...

Edited by JetBLICK on 5th Feb, 2017.


wil_h

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Betwix Harrogate and York

Such a mod to the toeboard falls outside of the Hillclimb regs for a mod prod car.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


D4VE

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lowestoft suffolk




On 5th Feb, 2017 robert said:
its scary to think of the rack mounted on the body ,and the steering arms hubs etc mounted on the subframe .

so any subframe movement will, if the steering wheel stays the same position ,effectively re steer the car .


Im sure ill read this another time and get ya but right now i dont? What u mean robert?

On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol

NOTHING GETS PAST ME!! *tongue*

1/4 mile 14.7 @ 96mph 12psi boost
Showdown class A 2nd place 18.6 @ 69mph


D4VE

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2974 Posts
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lowestoft suffolk




On 5th Feb, 2017 Aubrey_Boy said:
On 4th Feb, 2017 D4VE said:
I mentioned about putting rack in toeboard and then see the new Mighty Car Mods episode.. he mentions he'll be putting the rack in the toeboard somehow.. but wont find out til next episode now


The following image is the actual part that Minitec supply to create the recess in the toeboard for the steering rack to move back in to:



So I expect this is what you will see appear in their next episode.

Link to the parts required for RHD cars: (Includes rack mounting brackets)

http://www.superfastminis.com/products/RHD...ion%20Guide.pdf

I did it slightly differently, I fitted a new Heritage toeboard but moved the whole of it back and up purely to allow the clearance for the rack as I didn't want to have an obvious chunk cut out of the toeboard, like the boot floor I am doing now it was a lot of work but worth it to have something that looks more OEM.

Then by mounting the rack on the subframe it is more rigidly attached and I can fine tune the bumpsteer by shimming its height rather than having to create something at the steering arm end to fix the bumpsteer.



I didnt know u had done that, is there any pics in ur thread?

On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol

NOTHING GETS PAST ME!! *tongue*

1/4 mile 14.7 @ 96mph 12psi boost
Showdown class A 2nd place 18.6 @ 69mph


Aubrey_Boy

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If you look at around page 33 there are some photos of the floor replacement and one shows part of the toeboard, but there's very little to see as it just looks like a standard toeboard which was the intention, it moved back to make room for the diff casing which fouled the rack body, the toeboard is parallel to the original position, the toeboard itself, the lower bulkhead, the floor and the inner arches all had to be modified to fit it in.

If you look there is also a photo which shows the drivers side original footwell position compared to the new installed passenger side and this shows how much the bulkhead and toeboard moved back as the footwell had to move back as well for it all to look right.


robert

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uranus



On 6th Feb, 2017 D4VE said:



On 5th Feb, 2017 robert said:
its scary to think of the rack mounted on the body ,and the steering arms hubs etc mounted on the subframe .

so any subframe movement will, if the steering wheel stays the same position ,effectively re steer the car .


Im sure ill read this another time and get ya but right now i dont? What u mean robert?



hi Dave ,well, if the rack is bolted to the shell ,and the wheels hubs arms etc are bolted to the subframe ,

then if the steering wheel is held tightly straight ahead ,and the subframe moves up or down or left or right , as power is put on or off ,

then the distance from the steering arms to the body shell may move ,so the car changes wheel angle , all while the steering wheel is not moving at all , so the car is effectively steering itself .


i do know that on my car , if i do a hard launch with the front off the car , i can see the subframe move up ....and thats with a set of subby struts and solid mounts and sub frame to bulkhead packing and bolts .

so that will be changing the toe setting on and off the throttle , not to mention the additional effect of the whole front of the car rising and so the wheels dropping down out of the arches ... i wonder how much better a mini would feel with the rack mounted on the subby .

Edited by robert on 6th Feb, 2017.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

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