Ben's SS1 - SSF novice sprint car

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Benc
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Ben's SS1 - SSF novice sprint car

Post by Benc » Sun Dec 31, 2017 5:17 pm

Can anyone who has fitted a 5/6 point harness to a SS1 suggest how they fitted the crotch straps?

I was going to weld in new seat channel 45x30x3mm and add a centre H section with an extended folded channel 60x30x3mm plate welded at the front seat rail H join.

or 2 plates for 6 point.... if ya gets me drifts



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BigBobPilot
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Ben's SS1 - SSF novice sprint car

Post by BigBobPilot » Mon Jan 01, 2018 8:22 pm



Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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Ben's SS1 - SSF novice sprint car

Post by Benc » Mon Jan 01, 2018 10:19 pm

Cheers Ben

Believe it or not that's what I meant with my description but your picture is much clearer :D



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BigBobPilot
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Ben's SS1 - SSF novice sprint car

Post by BigBobPilot » Tue Jan 02, 2018 1:10 pm

Yep, I understood what you meant.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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Ben's SS1 - SSF novice sprint car

Post by Benc » Wed Jan 03, 2018 9:52 pm

Bit of more progress new seat rails folded at work from 3mm ms and cut trial fitted. Turned these
IMG_1149.JPG
IMG_1149.JPG (311.7 KiB) Viewed 685 times
Into this which needs welding and drilling :D
IMG_1150.JPG
IMG_1150.JPG (347.32 KiB) Viewed 685 times



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Ben's SS1 - SSF novice sprint car

Post by efi_sprintgte » Wed Jan 03, 2018 11:23 pm

Neat install :)


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Ben's SS1 - SSF novice sprint car

Post by Alan SS1 » Thu Jan 04, 2018 1:48 pm

for my tuppence
I assume the captive nuts / plates are only on top for ease of visulisation ?

3mm rails to 16 (OR 18!) SWG chassis outer sills will need some deft work with metal glue gun :wink:
only observation, admire your speedy work.


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Ben's SS1 - SSF novice sprint car

Post by td99 » Thu Jan 04, 2018 8:40 pm

Alan SS1 wrote:
Thu Jan 04, 2018 1:48 pm
for my tuppence
I assume the captive nuts / plates are only on top for ease of visulisation ?

3mm rails to 16 (OR 18!) SWG chassis outer sills will need some deft work with metal glue gun :wink:
only observation, admire your speedy work.
Agree with above! I found it very easy to blow through the thin sill metal!


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Post by Benc » Thu Jan 04, 2018 10:19 pm

Yes only for mock purposes, I'm going to cut that plate into 2 and weld each side of the central rail and the front one.

As for welding I'm no expert, I've done a bit here and there as a xmas present to myself I've now got a gas mig setup of 250 Amp!!

I've got some 1, 2&3mm off cuts so will have a practice first, apparently you weld on the 3mm and nip across to the thinner steel for a short duration 💥

I also left the side plates of the old rails still attached to the chassis sides so a bit thicker than just the chassis



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Post by Benc » Fri Jan 05, 2018 8:46 am

Got this email from msa yesterday :D
Dear B Curry

Good news! Your Competition/Entrant Licence has been sent for printing today.



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Post by reliant-reviver » Fri Jan 05, 2018 10:33 am

Was going to mention the side plates, that you've left them on is good and makes life easier. Just be sure that you have properly buzzed all the zinc off before setting to with the welder.

I trust you have checked the bolt spacing for your seat mounts? I did one to the original widths and found them too close for the intended seat IIRC.

If you are going for a 6 pt mounting is it not worth dispensing with the 3mm plate and adding a second channel instead? I see the (MSA spec) strengthening plates look slightly wider than the folded channel however, so perhaps not worth the hassle if it involves folding up more at a different width.


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Ben's SS1 - SSF novice sprint car

Post by Benc » Fri Jan 05, 2018 5:13 pm

Hi Phil seats are the original Sparco that came with car so I should get that bit right :|

Yes the msa plates are about 55mm wide channels 55mm so I got a bit more welding to install the extra plates now :D

All zinc ground off so Saturday will be hole burning afternoon :roll:



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Ben's SS1 - SSF novice sprint car

Post by BigBobPilot » Fri Jan 05, 2018 9:21 pm

RR, there is an MSA requirement for 3mm plate of a minimum size for harness mounting. Always check the Bluebook for this sort of thing.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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Ben's SS1 - SSF novice sprint car

Post by Benc » Fri Jan 05, 2018 10:39 pm

Other than around the harness bar where do ss1 compies mount the rear harness shoulder strap eyes? Back to the chassis would make the angle outside of the preferred zone?

Any pictures welcome :D
IMG_1152.PNG
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Post by Benc » Fri Jan 12, 2018 10:00 pm

Bit more progress seat mounts welded and cage install progressing :D
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IMG_1161.JPG
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