Corky's Scimitars (..and now an SS1 race car build)

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Post by Corky » Thu Oct 12, 2017 1:11 pm

Although the car will undoubtedly have the Cheshire touch, it will be a racer at the end of the day 8)

I have the small fuel tank and full cage ready to fit once I’ve lowered the floor. After that it needs an inter cooler and performance exhaust fitting.

I’m trying to avoid the temptation to fit the shiny body work until most of the above is done. The wing that’s fitted is there for straightening out purposes. It was a bit flat, and took some gentle application of a hot air gun to bend it back into shape.

Loving the blue against the black though :D


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Post by Corky » Fri Oct 13, 2017 3:19 pm

Let the floor lowering begin....

Image

I could do with a bit of advice as to which steel section to choose.

I'm looking at mild steel flange channel 51x25x5mm ( see here ) or 50X30X3mm box section ( see here )

All help gratefully received..

I also plan to put a sheet of 2mm steel over the hole and glass it in.

Potential to drop around 3" :D

Image


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Corky's Scimitars (..and now an SS1 race car build)

Post by CNHSS1 » Fri Oct 13, 2017 3:54 pm

I used the latter Steve but you need to cut steel tubes for the seat bolts to stop the bolts crushing the box section when tightened


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Post by td99 » Fri Oct 13, 2017 4:01 pm

Box section obviously! - it's much shiner than the C-section :P :P :P

C-section means that any nut underneath is protected to some degree, and doesn't protrude further below. Easier to bolt seat to as well.
Box section that size might well distort when tightening up bolt to hold seat in place - or you need a strengthening plate underneath it at bolt positions. Nut and bolt protrude further below bottom of box section.


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Post by td99 » Fri Oct 13, 2017 4:02 pm

Ah, beaten by CNH!


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Post by Alan SS1 » Fri Oct 13, 2017 6:35 pm

a bit late but if anybody wants it I have an excel spread sheet that does the 'bending' calculations for box/channel/tube/I section etc,
drop me a PM and I'll send it through as an attachment


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Post by Corky » Fri Oct 13, 2017 7:33 pm

Thanks for the tips fellas. Much appreciated.

Oh and thanks Alan, I'll drop you a PM if I think I need the spreadsheet.


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Post by Alan SS1 » Sat Oct 14, 2017 7:05 pm

an afterthought for seat fixings is to use a pair of the riv-nuts on a piece of 16SWG that you put INSIDE the box before you weld the cross sections into the floor, keeps the bolts/nuts nice and clean, easy to remove later, down side is that you need to know the runner width BEFORE you weld in situ. :wink: and pity help you if the riv-nut turns :-) been there before with 'captive' nuts :shock:

TBH if you are using box with 3mm wall to prevent the seat getting ripped out then I'd be considering plating sections of the sills with 2mm as well to spread the load away from the welds? ie step from 3mm walled box to a 2mm section of plate down to 16SWG chassis (if it is even 16SWG, might only be 18?)


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Post by td99 » Sat Oct 14, 2017 8:53 pm

Yep as Alan warns, chassis wall is thin, burnt though it a few times :cry: :cry:
Making the hole good is a real pain.


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Post by Corky » Tue Oct 17, 2017 7:43 pm

The steel has arrived along with a spangly new intercooler and pipework (more of that in a future post).

At the moment I need to concentrate on seats, as they will dictate where I weld in the new cross members. I was going to use the MR2 seats I'd bought, but have decided that they're too heavy (lighter than stock seats though). There are some GRP shell seats on eBay (Lotus Elise copies), that I'm thinking of using. The problem is, that for roadgoing they'll need trimming. Not sure if I'd get away with a stick on padding set, or have to get a full covering made ? Other options are to find some Lotus Elise seats, that aren't ridiculously expensive, or buy another set of the Sparco seats I had in the Sabre.......


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Post by reliant-reviver » Tue Oct 17, 2017 7:57 pm

Trimmed grp, kevlar or carbon shell seats?

had to sell my Cobra Imola "S" seats earlier in the year as i had them down from the loft for the first time in years and found my a*rse didn't fit any more.
Great compact seats though and fit a treat.


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Post by CNHSS1 » Tue Oct 17, 2017 8:28 pm

I had Elise seats in the sabre, fit well and actually very comfortable, far more so than traditional race seats. Sold them to Peter SM not sure if he ever fitted them to his Sabre?


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Post by scimjim » Tue Oct 17, 2017 8:49 pm

Pretty sure you don’t need seat trim for roadgoing regs - or do you mean for using on the road?


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Post by Corky » Tue Oct 17, 2017 9:37 pm

Doesn’t it say “seats can be changed for trimmed competition seats” or words to that effect. I’ll have to have a look at the wording later.

It was your Sabre that gave me the idea Craig. They looked like the perfect solution. They fit, and allow for the fuller figured driver.....


Steve
Current:- SS1 Ti sprint car, project. VW Touareg 3.0 V6
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Post by Corky » Tue Oct 17, 2017 10:09 pm

Found it :-
10.1.8. Road-Going Series Production and Road-Going Specialist Cars: front seats may be replaced by fully trimmed Competition versions.


Steve
Current:- SS1 Ti sprint car, project. VW Touareg 3.0 V6
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