NACA 66 Special A/BGS

[tauruck]

Jon,
Eric is making the body directly from the male plug. He is a very experienced composite fabricator and told me that done right you can do a body this way and not have a lot of sanding to do to make it smooth.

Rex

Yup, it can be done and will save the expense of a female mold. I guess he's using a very fine woven fabric as his last layer before the peel ply. The only problem I see in doing it this way are pin holes (surface bubbles) but as he's a pro that shouldn't be a problem.

[tauruck]

I just went back a few pages and saw all the work that went into producing the plug. Enough to make me want to head for the hills. Only because I've been there. I know I'm not a lone sufferer now. That's very nice work and the composites guy should get a lifetime's supply of the "Good" stuff.

[robfrey]

Got waste gates fitted up and tacked in.
Left side.



Right side

This is the right side gate but it is a view from my phone held against the engine plate.

[robfrey]

Brandon also made some pretty good progress with the wiring.
Plywood is just temp until we are happy with where everything goes.

[robfrey]

We also made a little progress with some composite work.
Here are some pics of the construction of the molds of the air inlet ducts.

[Jon]

Looking good Rob, as always.

Are you having any slip joints or similar for thermal expansion on the wastegate piping?

Cheers
jon

[robfrey]

Jon,
We have not done in the past but I like that idea. Let me see what I can get to work here. Maybe a stainless bellows placed between the gate and the exhaust pipe.
My other applications had longer sections of piping that could flex a bit during thermal expansion. This one is tight. Thanks for bringing this up.

[tauruck]

Rob, it looks good. I'm not trying to be a know it all and hope you don't think I'm interfering in your project but I have a tip on making ducts like you are, using foam. I used to do them the hard way but came up with a solution that blew my mind all those years ago. I made the dummy ducts from Polystyrene and once I was happy with the shape I added a layer of peel ply using Epoxy obviously and then went with the glass or Carbon fabric. Once the job was cured I poured Acetone down into the duct and it chowed the Polystyrene. All that was left was the removal of the peel ply. The Acetone you would use is very little and not enough to damage the part because it evaporates so quickly. You could do the job without the peel ply but then you need to sand the inside. Saves on complicated molds.

[robfrey]

Yes, we know that trick but the mold is consumable and we plan on building a couple of these cars, so it works out better to have a mold.
Don't worry about sounding like a know it all. Many times guys have mentioned what some would think to obvious but it was not to me.
One good thing about your system is that the part comes off in one piece.

[robfrey]

Eric (aka Blue) and Richard arrived with both halves of fuselage after 2400 miles of bad weather.
Also brought flaps, wings and a lot of tools.





We also had another milestone today as we mounted up the front suspension and some low speed wheels / tires and it actually rolls! We have a roller!

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[tauruck]

It looks good but we need more pics . 2400 miles is a stretch in good weather!!. You guys rock. LSR guys are a breed apart and it's a tough act to follow.

[Peter Jack]

Go to http://www.carbinitelsr.com/ and you can see all the pictures Mike.

Over here 2400 miles is a pretty good trip but still very doable with pretty good highways all the way. North America's pretty well laced with good routes wherever you want to go.

Great to see another big step for Rob and crew. Congratulations Guys. 

Pete

[robfrey]

Try to get some more pics taken and post today.
Going to be a busy couple of weeks.
Front tires and wheels are space saver spares from Mini Cooper for very low speed testing, moving around the shop, and show. We cut the centers out of the 15x4 wheels and welded in custom 1/4" plate waterjetted centers. They came out way better than expected. I would not be afraid to put some Goodyear 21" LSR tires in these wheels to do some 1 mile events.
Lots of good help this week from Dave Gray! He pushed me to get the wheels just right. Also Ray Vinson has been at the shop helping with fabrication and machining. I feel blessed. lookin forward to what today has in store for us.

[DND]

Hi Rob

Very nice looking body and that will be a big day when it is all mounted, on a smaller note it look like you have teflon tape on your oil line fitting to lube the turbo shaft.

Do you think the hi heat in that area will cook that teflon tape?

Maybe a hi-temp aircraft sealer?

I never liked that tape as it is easy to have too much and it gets in your hose and that is bad news, i always used thick red Loctite instant gasket instead great stuff.

Don

[tauruck]

Thanks Pete, I just checked the site. Awesome.