Author Topic: NACA 66 Special A/BGS  (Read 596390 times)

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Offline robfrey

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Re: NACA 66 Special A/BGS
« Reply #1080 on: June 17, 2014, 10:08:47 PM »
Fairings look good Rob, you going to be at Speedweek?

Lord Willing, we we be there and the Usfra  test session in 3 weeks.
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Offline robfrey

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NACA 66 Special A/BGS
« Reply #1081 on: June 21, 2014, 01:19:02 AM »
Looks like we are not going to have the 540 engine ready for the test session. No problem though as we will have the 496 back together soon. Port work, new valves, springs, retainers will give us a bit more power. Also we will run the 88mm turbos. We can safely make 1900 hp which should be enough to see if the body and chassis work okay. We also picked up an extra driveshaft today to add to our pile of spares.
I think we are taking the Denali to pull the car trailer and a mini van full of spares. If the 540 gets done, we will take it also.
Rick Yacoucci and Brad Bosworth are meeting us out there to help us and share their wisdom about getting up to speed. We feel blessed!!!!!
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Offline tauruck

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Re: NACA 66 Special A/BGS
« Reply #1082 on: June 21, 2014, 09:47:49 PM »
Go Rob!!! :cheers:

I'm excited for you guys and one thing I know is that the reports and photos will be top notch.

I can't wait.

You'll do great stuff.

Offline robfrey

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Re: NACA 66 Special A/BGS
« Reply #1083 on: July 18, 2014, 06:23:19 PM »
Of all things, we had power issues at the test and tune.
Lots of heat damage in engine compartment when engine went lean and got the exhaust system very, very hot. The power train package was very well proven in Vinny so the lean thing sort if caught us off guard. Looks like there may have been two issues. The first is that the set screw on the Weldon pump came loose so we were only running on the aeromotive A1000 primary pump. We fixed this on Saturday but it still ran lean on Sunday. This weeks static flow test revealed that the diaphragm in the fuel pressure regulator has som major cracks in it and may be causing our erratic fuel pressure readings that we saw in the data log.
We will repeat the test with a new diaphragm tomorrow to confirm and then take the car to a chassis Dyno mid next week, Lord willing.
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Offline Freud

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Re: NACA 66 Special A/BGS
« Reply #1084 on: July 19, 2014, 11:00:03 AM »
Sorta like You.  We didn't have any problems until we ran.  Sigh.....................

It was nice to see you even if it was brief. Rufus says Hello.

FREUD
« Last Edit: July 19, 2014, 11:02:36 AM by Freud »
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Offline Crackerman

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Re: NACA 66 Special A/BGS
« Reply #1085 on: July 19, 2014, 12:48:03 PM »
Thats a big bummer.  Was the engine hurt at all by the lean afr? What sort of damage was sustained in the engine bay?  Is there a better way to manage exhaust heat whether over temp or otherwise?
And most importantly, how fast did you run and are you making speedweek?

Offline bbarn

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Re:
« Reply #1086 on: July 19, 2014, 01:05:19 PM »
No major damage done other than turning the header wrap to glass! The piston squirters did a great job of keeping things from melting down.

The secondary fuel pump had some issues that prevented the necessary fuel volumes from being reached. We tested them this morning, the repairs seem complete. We'll get up on the dyno this week and confirm it.

As far as engine bay damage, it wasn't horrible. We melted some cables and wires, but not clear through. We were able to make another pass on Sunday but still had fuel issues. EGT went high and Rob wisely lifted.

We will use a fire sleeves on a few pieces and use rubber hoses instead of nylon or plastic. I don't see anything keeping us from making Speedweek.

The fastest pass was the second one at 273. That is the pass that ran high on the EGT.
I almost never wake up cranky, I usually just let her sleep in.

Offline superleggera

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Re: NACA 66 Special A/BGS
« Reply #1087 on: July 19, 2014, 01:38:39 PM »
questions: (and glad to see that you made the test&tune and discovered the issue pre-SpeedWeek or Fall events)

a) how did the streamliner tract down the salt -- video looked good

b) did you leave the rear flaps in a static position or were they active?

c) how did the front aluminum wheels perform?

d) any comments on the chassis feel or directional characteristics of your "new design" streamliner?

Request: if you ever get the chance, can you take video of loading the streamliner on/off the trailer.

- me: Mark - home: Dry Heat, AZ USA - build: motorcycle streamliner

Offline bbarn

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Re: Re: Re: NACA 66 Special A/BGS
« Reply #1088 on: July 19, 2014, 04:37:55 PM »
questions: (and glad to see that you made the test&tune and discovered the issue pre-SpeedWeek or Fall events)

a) how did the streamliner tract down the salt -- video looked good

b) did you leave the rear flaps in a static position or were they active?

c) how did the front aluminum wheels perform?

d) any comments on the chassis feel or directional characteristics of your "new design" streamliner?

Request: if you ever get the chance, can you take video of loading the streamliner on/off the trailer.

The driver reported the car ran straight and true. The faster he went the more stable it was.

The flaps were active for the runs.

Front wheels worked well, they didn't mark the salt and took input real well.

There was a little crosswind on Sunday's run. The car handled it without issue. Overall we are very happy with the handling characteristics.

We have a couple short clips, we'll try and get a full video at Speedweek.
I almost never wake up cranky, I usually just let her sleep in.

Offline Freud

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Re: NACA 66 Special A/BGS
« Reply #1089 on: July 19, 2014, 07:01:57 PM »
Thanks bbarn.

We are happy that you achieved what you did.

You have come a long ways in a short short time.

FREUD
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Offline Richard 2

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Re:
« Reply #1090 on: July 19, 2014, 09:27:15 PM »
Insert Quote

No major damage done other than turning the header wrap to glass! The piston squirters did a great job of keeping things from melting down



Jet-Hot Coating on Headers, are the way to go. No more fiber glass wrap.
 
Black Salt Racing suggested it to us.

http://www.jet-hot.com/coatings/

Richard 2

« Last Edit: July 19, 2014, 09:33:15 PM by Richard 2 »
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Offline robfrey

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Re: NACA 66 Special A/BGS
« Reply #1091 on: July 20, 2014, 12:21:32 AM »
Yes, we have used Jet hot before. We probably do not have time before Speedweek .
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Offline robfrey

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Re: NACA 66 Special A/BGS
« Reply #1092 on: July 29, 2014, 12:15:07 AM »
We borrowed a Stroud Drouge chute from Sparky but someone also brought us a small DJ Drouge . We want to pay for it? If anybody know where it came from please tell us so that we can square up with them.
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Offline robfrey

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NACA 66 Special A/BGS
« Reply #1093 on: July 29, 2014, 12:18:58 AM »
We went to the Dyno on Friday and Saturday. Only made 1327whp.  At least  that's all we could measure as we were extremely traction limited.

http://youtu.be/kdbqR7UoT98
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Offline tauruck

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Re: NACA 66 Special A/BGS
« Reply #1094 on: July 29, 2014, 12:43:19 AM »
Cool video, thanks Rob. :cheers: