Turbo Type 4 Tube Frame Drag Race Oval Project

[Steve Arndt]

That is going to be an impressive wing!

[Andy Sweeney]

Went to Rob's shop for a trial seat fitting and to get the position of the pedals sorted. It was very exciting to see everything in the flesh for the first time.

Rob's doing a great job so far.

[Andy Sweeney]

Fresh with the excitement of seeing the car for the first time, I carried on making the rear wing, concentrating on cutting the foam centre sections to make sure everything is going to fit together with precision before I kin it in aluminium.

Pleased with how its turning out so far, just the main centre piece to cut now.










If any mods read this - can this thread be moved to the Drag Race section please?

[Andy Sweeney]

Sorry, no photo's but a little progress none the less...

James at Stateside Tuning has now finished the heads and most of the machining on the crank case - we just need to decide on a final cam grind then we can machine for the cam bores and clearance and dish the pistons for the the trash can lid valves and desired compression and we'll soon be on the hunt for an appropriate turbo big enough to house a small family of squirrels.

Bears Motorsport have machined a custom nose cone with built in front mounts for the 091 transmission for use with the Vertigate shifter rods.... more of this down the line.

In other news, there has been a little tweaking of the drag racing inspection regulations over here in the UK where any none OEM floor / tube frame car must have a floor built to SFI 25.4 spec, so in this vein, we're making sure we are covered in this area as well as us shooting for a 8.50 tag from the get go.

In the mean time I've been whiling away my evenings on the rear wing. Nothing exciting to see, just me wishing I had panel rollers, as hand forming the aluminium skin is a pain in the ass... especially when you have very limited skill or competence. Picture lots of clamps, tape, bonding adhesive and lots of weights and you'll on the right track.

Getting there slowly....

[Andy Sweeney]

Dedicated readers will recall I was machining some custom clevis' to mount the rear wing.

It is said that a poor workman always blames his tools.... well, in this case at least, the tools didn't help as I was using my brother-in-laws cheap and nasty Chinese hobby mill/lathe which whilst certainly looked the part, was in fact a bit like trying to eat an apple through a letter box.

A large helping of incompetence on my behalf was the icing on the cake.

In a nut shell, I wasn't happy with them, so a good friend and fellow VW enthusiast in Ohio who machines stuff for a living in the aircraft industry came to the rescue and offered to make the parts for me on more substantial equipment.

Tim turned my wet finger in the air sketch into this, to be made from 6061...



And also a stainless clevis pin, as shown in green, here...



The rest are Tim's words and pictures...

I wrote the program for the CNC lathe using gibbscam after the solidworks rendering was complete.

then I chucked up the aluminum in the lathe.



I hit the green button and let the lathe do it's thing.

Here's the final pass "in action".



Done!



Andy needs four of them...



Next, I turned the part around and chucked it up in the lathe.

Then I drilled and tapped an 8mm x 1.25 thread x 20mm deep hole as seen below.



Repeat three more times...



Everything on the lathe is finished.

On to the mill...

I made a fixture out of Delrin to hold the part in the vice.



I need to machine the slot in the aluminum next.

So, I placed the aluminum in the fixture and mounted it onto the vice on the mill.

Here we are after the slot has been cut.



Next, a 1/2" end mill machines the flat portions on either side of the slot.



I turned the part 90º to machine the holes for the clevis pin.



After the holes were milled, I tapped the bottom portion of the blind hole with an 8mm x 1.25 thread tap.



Here's the finished part along with the stainless steel clevis pin. I forgot to take pictures whilst making it...sorry.



Close up of the shouldered pin mounted in the clevis...



The final product!



To say I'm pleased is an understatement - thanks Tim, I owe you one!

[Andy Sweeney]

Investigating clutch management systems - the solenoid opperated slow release valve type.

Research on here brought up a little information which from what I gather, most solutions are home brew, which is fine.

I read that Mega Machine Inc sell an apporpriate valve, but couldn't see anything on their website?

Can anyone point me in the right direction?

Thanks.

[andy198712]

sweet bit of machine work there!

[Boardpaul]

You could of smiled whilst being in the driving seat for the first time

[Andy Sweeney]

You could of smiled whilst being in the driving seat for the first time

You're not the first person to say that. I was trying to hide my excitement!

[Boardpaul]

Did you at least make car noises

[Andy Sweeney]

Did you at least make car noises

Not in front of witnesses.

[Piledriver]

Did you at least make car noises

Not in front of witnesses.

We'll never tell.
Mine sounds like a Ferrari when it's not running.

[judge]

thought i better stick my head in here, i'm the one building the car for Mr Sweeney.
been a while since i have been on here, some of you may remember my type 4 powered 1303 hill climb car.
I'll stick some more progress pic's up as and when i do more work on the car.

[Andy Sweeney]

thought i better stick my head in here, i'm the one building the car for Mr Sweeney.
been a while since i have been on here, some of you may remember my type 4 powered 1303 hill climb car.
I'll stick some more progress pic's up as and when i do more work on the car.

Hey Rob, good to see you on the thread - I felt a bit like the head waiter talking through the menu whilst the chef was out the kitchen!

What's cooking? Smells gooooood!

[Boardpaul]

Can one of you post some new stuff up each night this week.

I'm on nights and think I could do with something interesting to read.m

No pressure, just build stuff then post about it for my pleasure.

Is that asking to much?