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Home > Show Us Yours! > Project "Marginal gains..."

jakejakejake1

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Northants

I think I am actually in love with this build :)


Aubrey_Boy

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Cheers Jake *happy*


On 14th Mar, 2014 TurboDave16V said:


I'm still struggling to see how something with large-span triangulation like the Zcars / Minitec is little-to-no better than the thin span on the AMT.



Just to be clear I am not stating that one configuration is better than another just the thought process which lead to the choice I made, be it right or wrong, both have advantages / disadvantages.

I have simulated 0.9g braking and 0.9g cornering and in the configurations.

Talking specifically about the top arm on the Minitec / Z cars or any frame with this kind of top arm joint spacing:

By making the joints seperated by this amount (not that dissimilar to the standard A series lower 'arm' arrangement, but definately a step further with the Minitec arrangment) we pretty well if not totally decouple how the longitudinal (braking) and the lateral (cornering) forces are fed into the upper arm joints.


I have no idea what gauge / type of tube is in the Minitec subframe or what it weighs, my subframe still weighs just over 11 kg (If I keep the shear panel it will add another 2 kg once lightened). The original XE subframe I took out of my car weighed 33kg, Watsons subframes (Metro / MGF based) weigh in at 30kg before Watsons add additional structure for the Honda engine mounts - I have weighed these myself so am confident in the numbers.

The Z cars link you posted is for a RWD engined car so they can add a completely uninterrupted frame work out to this point as there is no engine to get in the way.

The following images show the additional mount (outlined in red) that were always intended but have only just been made, this tube will be integrated into the bulkhead, it falls nicely into the corner of the bulkhead but will have additional metal work tube/s to spread the load fed into it the bulkhead better



Basically a long 12.9 bolt goes through the tube in red, through the upper arm spherical joints and through the subframe



Incidentally the red tube is much longer than it needs to be, I will cut it back once it is fully integrated into the bulkhead, the yellow line is the approximate position of the bulkhead to give some idea of how much these additional mounts stick out.

It helps the rear part of the upper arm especially and will reduce the twist and lateral movement (the washers are temporary as I appear to have put the 'proper' spacer somewhere safe :) )

Cheers

Edited by Aubrey_Boy on 13th Jul, 2017.


TurboDave16V
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***16***

SouthPark, Colorado

RESPECT!!!!!

Looking at the images above, I believe you do have at least 25" increased span, maybe as close as 50% over the AMT frame. I also did not click you were intending on using K-series hubs - what are the major differences - i.e. what is the most significant improvement over the mini hub? Is it the KPI relative the the hub axis, or a reduced distance between the swivels or something else?

I am loving the details of your build btw, and looking at the pictures of welding is an inspiration. I can't wait to see the final exahaust manifold all welded up. Are you doing the welding yourself? Can I ask what rods you use for the T45?

Edited by TurboDave16V on 15th Mar, 2014.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Turbo Phil

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My sister is so fit I won't show anyone her picture

Lake District

Nice build. Especially loving the manifold.

Phil.

WWW.TURBO-MINI.COM


evolotion

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Glasgow, Scotland




On 15th Mar, 2014 TurboDave16V said:
RESPECT!!!!!

Looking at the images above, I believe you do have at least 25" increased span, maybe as close as 50% over the AMT frame. I also did not click you were intending on using K-series hubs - what are the major differences - i.e. what is the most significant improvement over the mini hub? Is it the KPI relative the the hub axis, or a reduced distance between the swivels or something else?

I am loving the details of your build btw, and looking at the pictures of welding is an inspiration. I can't wait to see the final exahaust manifold all welded up. Are you doing the welding yourself? Can I ask what rods you use for the T45?


Hope im not intruding in the build, but i built my latest frame around k hubs for the scrub radius improvement. Did this after me and Abs (16vminiclub) put our minis back to back, each in each others cars on the same road. We both had ~200hp at the time, and i was on A(metro) hubs and him on k hubs. difference was staggering.

not to mention, larger wheelbearings better balljoints and much larger CV joints :)



awesome build, never much liked the really narrow, single sheer mounting points on the inner of the upper arms on the AMT frames.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.


robert

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uranus

good picture denis, what offset wheels?

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


Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

they are 7x13's so almost definatly -7et

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



TurboDave16V
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***16***

SouthPark, Colorado

This is super-interesting. Are the K-hubs the same layout as the mini hubs - i.e. similar taper, similar distance between the swivels?


EDIT:
http://www.ebay.co.uk/itm/390627506526

Duuuh, just remembered the earlier pictures of the bottom arms...
I agree, that these do look like a much better option.
Just how much bigger are the CV's then?

Edited by TurboDave16V on 16th Mar, 2014.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Craigie-B

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Wootton Bassett

are you the dude over on clubopd???

On 10th Mar, 2012 theoneeyedlizard said:

Hypothetically speaking, where would you stick your nozzle?


On 22nd Jun, 2012 apbellamy said:
my wife doesn't know what.head is never mind compression ratio.


Aubrey_Boy

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Thanks for all the comments

On 15th Mar, 2014 TurboDave16V said:


I am loving the details of your build btw, and looking at the pictures of welding is an inspiration. I can't wait to see the final exahaust manifold all welded up. Are you doing the welding yourself? Can I ask what rods you use for the T45?


Cheers TurboDave, as far as rods go it's just the standard industry recommendation:

A31 if NOT heat treating
A32 if heat treating

All of the TIG welding is done by a good friend, he's a Motorsport fabricator but with the build up to and the race season now having started it's getting difficult to get stuff done. I'm ok-ish with a MIG for body related stuff but intricate work like the manifold and safety critical things like the subframe and suspension I just couldn't trust my own efforts.

TurboDave16V said:


I also did not click you were intending on using K-series hubs - what are the major differences


I mentioned earlier that I had to rethink the coilover layout, the main reason is that I really want to keep the track width sensible and in doing so I couldn't get the lower coilover mount in a position to give the behaviour I wanted, tbh for a good while I had admitted defeat and just accepted what I had. As more parts were positioned I mocked up a few options and decided on what is shown here:

This is the centre mount for the horizontal coilovers, the tube coming out the back is just to reduce the subframes main lateral tubes tendency to bend / bow when loaded, it will be stitched into the main crossmember in the bulkhead, because the coilover is near parallel to the tube most of the force is dealt with by the subframe tube itself.



They also reduce the unsprung weight and the weight of the coilover is much lower in the car, no question ride height / corner weight adjustments will be a PITA, but proper wheel rate behaviour is more important than convenience.

Cheers

Edited by Aubrey_Boy on 13th Jul, 2017.


Aubrey_Boy

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Happy Days: All fits inside a standard steel front











Off now to be TIG'd up



And make a start on the down pipe

Sorry Craigie B > Yes that's me

Cheers

Edited by Aubrey_Boy on 17th Oct, 2017.


jonny f

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Dorking

*surprised*

Amazing as usual!


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

My word.

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


theoneeyedlizard

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The Boom Boom speaker Police!

Essex

Wowsers!! This gets better and better.

If you had a load of bracing integrated into the cage, could you have two removable sections of the bulkhead to get at the coil overs?

In the 13's at last!.. Just


steve w

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AKA chargedzetec

Milton Keynes

This build is awesome, my favourite currently underway.

This is FORD country, on a quiet day you can hear Vauxhalls rusting.


MarkGTT

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Shropshire.

Nice work buddy - the manifold is a work of art!


cradley_heathen

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good god! this is awesome! i think its amazing how far things have come from cobling a maxi engine in with bits of handy angle and all thread!

keep up the excellent work!


supermotolee

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kings langley

Nice build

Speeding is like masturbating, everyone does it, but not all of us film it and put it on the internet

[quote=fab,8th Oct, 2010]fuck off


Kean

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aka T2clubby

South Staffs

Superb work


gr4h4m

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Chester

Very neat.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!


jakejakejake1

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Northants

Awesome work, do you think the bonnet will clear the cam cover and breather?


Jay#2

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Northern Ireland (ex AUS)

Now that's neat!

On 7th Nov, 2008 Nic said:
naeJ
m
!!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd


Aubrey_Boy

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Thank you very much for the generous comments

The cam cover and the breather on the front clear fine, the top of the cam belt cover is the area which is closest > which is why I modified it in order to raise the engine a tad.

I will live with the difficulty of adjusting the coilovers for ride height for the time being as I think with the dash / pedal box / heater and all the other crap installed there still won't be easy access even from inside.

As there was a little more room around the turbo manifold than expected we are going to move the turbo forward as I was just a little concerned about having the body of the turbo so close to the block and the heat fed into the block from it.

Hopefully the manifold should be all TIG'd up by Thursday and the downpipe and sump at least mocked up to squeeze them both between the block and the shear panel.

The main oil carrying body of the sump will be moved to the opposite side from standard to provide the routing for the down pipe and the first part of the shear panel lightening has begun to allow the down pipe pass between the the shear panel and the lateral subframe tube which the rack mounts to.

Cheers

Edited by Aubrey_Boy on 18th Mar, 2014.


Carl S
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Bristol

I've been a quiet follower of this thread and the other you had going on 16v mini club pretty much since day one, but I must say now, this build is a masterpiece!

And that exhaust manifold is an artwork all on it's own; fabulous work.

Looking forward to your coming updates*smiley*


Aubrey_Boy

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Hi Carl,

Thank you for your comments, I see your just down the road from me in Wolvo *happy*

Which side are you? The Tettenhall 'rural' *wink* side


On 15th Mar, 2014 evolotion said:


Hope im not intruding in the build, but i built my latest frame around k hubs for the scrub radius improvement. Did this after me and Abs (16vminiclub) put our minis back to back, each in each others cars on the same road. We both had ~200hp at the time, and i was on A(metro) hubs and him on k hubs. difference was staggering.

not to mention, larger wheelbearings better balljoints and much larger CV joints :)


Hi Evolotion,

You say you have built your new subframe around the K hubs, have you used it in this set up? Just interested how it felt as a direct comparison on the same car with your previous A series Metro hubs / steering arms.

Did you use all the whole K Metro subframe & parts or a bit of both?

Cheers

Edited by Aubrey_Boy on 17th Oct, 2017.

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