NC 20BPP Time Attack / Track Car - Build Thread

16bit · Postby **16bit** » Fri Aug 09, 2013 12:16 pm

soft top, no wonder the c pillar is the wrong shape.

that looks mean.

Jeo · Postby **Jeo** » Fri Aug 09, 2013 3:18 pm

Phwor...

Do we get to see it in October?

Postby **orx626** » Fri Aug 09, 2013 3:23 pm

Jeo wrote:Do we get to see it in October?

We're working on it, but there's a few things beyond our control that may pull us up short. Time will tell.

Cheers,
Danny

The Green Goblin · Postby **The Green Goblin** » Fri Aug 09, 2013 7:14 pm

this is nuts.. looking forward to the end product.

Postby **orx626** » Mon Aug 12, 2013 9:06 pm

The Green Goblin wrote:this is nuts.. looking forward to the end product.

Me too!

Next on the build program were the engine mounts. We started with the right hand engine mount as this is the side that the exhaust has got to make its way down. I selected a Mackay Rubber flexible bearing (A1928) as the core component of the engine mount. It's just a simple design were the bearing is housed in a steel sleeve. Members can then be welded to the steel sleeve as required. A couple of aluminium caps were turned up to replicate the overall length of the flexible bearing so it isn't damaged by heat when other members are welded to the steel sleeve.

A pair of profiled plates were tack welded in the appropriate position on the right hand side of the front subframe. From here members would connect to multiple mounting points on the engine. It's important that members don't take up too much space which could have a negative impact of the routing of the exhaust headers.

The first member is tacked in place.

The second member is tacked in place....

....and then the third and final member is tacked in place.

Fully welded out right hand engine mount ready for the flexible bearing to be pressed in.

Ta-da!

Cheers,
Danny

Postby **NitroDann** » Mon Aug 12, 2013 9:12 pm

Please, more fabrication pics.

How were the subframe weld on plates designed and cut, no way it was done by hand..?

Dann

Postby **orx626** » Mon Aug 12, 2013 9:21 pm

NitroDann wrote:How were the subframe weld on plates designed and cut, no way it was done by hand..?

Yep, done by hand. A piece of cardboard, a Nikko pen and scissors FTW!!!! :mrgreen:

I needed to keep the ball rolling fast on the project and I couldn't wait a week (which is the current laser cutting lead time). The dimensions aren't particularly critical so they were hand profiled. Yes they cost more to do it that way when compared to laser cutting, but as a critical path item I needed them done the week before yesterday :lol:

.....the damn flexible bearings took two weeks to come up from Melbourne and they were in stock!!! :roll:

Cheers,
Danny

Postby **NitroDann** » Mon Aug 12, 2013 9:23 pm

Dam !!!!!!!

What shop tools did you use to shape it please

Dann

Postby **orx626** » Mon Aug 12, 2013 9:30 pm

NitroDann wrote:What shop tools did you use to shape it please

A 5 inch grinder with a cut-off wheel, a 5 inch grinder, a drill press, a belt sander, a sand blaster and a couple of hours. :wink:

Sean · Postby **Sean** » Mon Aug 12, 2013 9:32 pm

orx626 wrote:but as a critical path item I needed them done the week before yesterday

Possibly the only reference I've ever seen to delivering a car on time by anyone in the industry! :lol:

Fantastic craftsmanship as always.

Postby **NitroDann** » Mon Aug 12, 2013 9:32 pm

Its the sand blaster, I see.

Much appreciated thanks, Gorgeous work

Dann

Postby **orx626** » Mon Aug 12, 2013 9:43 pm

Sean wrote:Possibly the only reference I've ever seen to delivering a car on time by anyone in the industry!

It comes from working in industries where they have this little thing called 'Liquidated Damages'.

Sean wrote:Fantastic craftsmanship as always.

Thanks Sean.

NitroDann wrote:Its the sand blaster, I see.

Things weld and paint soooo much better.

Cheers,
Danny

zero00 · Postby **zero00** » Mon Aug 12, 2013 9:48 pm

Danny

As you know I'm NOT technically minded but following this topic I'm having so much fun and have almost worn Mr Google out!!

I'm also proud to be able to say that I have been looking at THAT NC now for over 3 years and to see it last week and being worked on, well - pass another tissue please!!

I LOVE IT!! :wink:

PS: I know how fast the green NC can pass me between turns 1 and 2 at QR, I think when this gets on the track I'll just leave mine in the pits and watch from the guard rails!!

timk · Postby **timk** » Mon Aug 12, 2013 10:17 pm

This thing is absolutely mint.

I must trust Danny's steering ability a little more than you Roger! :lol:

sailaholic · Postby **sailaholic** » Mon Aug 12, 2013 10:45 pm

orx626 wrote:
It comes from working in industries where they have this little thing called 'Liquidated Damages'.

Lol, Yup that one is important , I scan once for basic technical details, scan second time for "liquidated damage" "contact retention" and "warranty period".

Then go back and get serious for technical details.

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