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

miniminor63

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1849 Posts
Member #: 672
The oversills police

Oslo, Norway

could you not fit a tubde from inner sill/main hoop to inner sill/main hoop on the other side under the seat base to stiffen it up?


Aubrey_Boy

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690 Posts
Member #: 9962
Post Whore

Yeah absolutely, a tube across is a perfect way to stiffen things up except for the weight put back in will end up very near if not the same as the ally box section I took out. It's pretty well 1200mm inner sill to inner sill and even going down to 1.2mm wall 38mm tube (too wide a span for a smaller diameter to add any useful amount of stiffness I think) it comes in at 1.3kg before I think of adding any bucket bushes or gussets back to the mount points.

As I say I want to improve exhaust clearance where the tunnel meets the heelboard which the current ally box section obscures. I decided I'd only pursue this route if I could solve the clearance issue and save a reasonable amount of weight at the same time, I couldn't justify the work involved if the only gain was clearance and very little or no weight saving.


madmk1

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5356 Posts
Member #: 6181
Double hard bastard

brookwood woking

Looking good mate! I love the thought that is going into this car.

I have started posting on Instagram also my name on there is turbomk1mini

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


jonny f

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2027 Posts
Member #: 9894
Post Whore

Dorking

Looking very neat. Keep the updates coming!


Aubrey_Boy

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690 Posts
Member #: 9962
Post Whore

Cheers Simon and Jonny

Hopefully I'll be able to make some steady progress over the coming months

Cheers


Aubrey_Boy

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690 Posts
Member #: 9962
Post Whore

I decided I'm happy with the overall idea so started to weld up in stages while I keep it bolted to a straight edge and using the ally box section as a jig and checking it still bolts up so I know it hasn't moved too much after welding.



I think I might calculate the weight of adding the same sort of section in the centre so this increase in section depth goes all the way across the heelboard like a continuous box section again.

Cheers

Edited by Aubrey_Boy on 27th Oct, 2017.


gr4h4m

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4872 Posts
Member #: 1775
Post Whore

Chester

Looks nice and 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!


Aubrey_Boy

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690 Posts
Member #: 9962
Post Whore

Cheers Graham

Edited by Aubrey_Boy on 29th Oct, 2017.


steve w

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654 Posts
Member #: 1917
AKA chargedzetec

Milton Keynes

More ‘marginal gains’ in the post



106 grams, down to 14 grams

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


Aubrey_Boy

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690 Posts
Member #: 9962
Post Whore

Thanks again Steve, if only I could make the same percentage gains on everything else!

Cheers


stt

21 Posts
Member #: 9627
Member

What are the carbon discs for?


steve w

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654 Posts
Member #: 1917
AKA chargedzetec

Milton Keynes

Air vent blanking plate I believe

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


stt

21 Posts
Member #: 9627
Member

Surely not blanking them is even lighter!


theoneeyedlizard

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7157 Posts
Member #: 1268
The Boom Boom speaker Police!

Essex

On 24th Feb, 2018 stt said:
Surely not blanking them is even lighter!


Certainly wetter.

In the 13's at last!.. Just


stt

21 Posts
Member #: 9627
Member

Any updates?


stt

21 Posts
Member #: 9627
Member

Any progress on this?


pat_t

1 Posts
Member #: 11242
Junior Member

What happened to this? Any updates?


Tomm

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173 Posts
Member #: 1432
Advanced Member

Kent

One of my preferred builds to read on this forum. Be nice to see what progress has been made.

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