87 replies to this topic

[Mark Onofri]

Well,as usual, I'm going to have to make a " do over" not happy with the blue and, the rear two (2) sections of the strip are almost as crooked as a politician.

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[Martin]

Yea, it is a bit dark and the roof and trunk stripe are a bit wonky  but you will get it 

 

I do like like its not red though. Bold move 

[Bill from NH]

I'll have to find my bamboo slide rule & refamiliarize myself with that 'P' scale. Yes, it does exist (but not on many rules), & I didn't use it too frequently.

[Mark Onofri]

Billnh,at least you
1) know what one is
2) know how to use it
3) I was going to say " you know where it is"
I'll look for mine.

[Bill from NH]

The 'P' scale is also called the Pythagorean scale. The P scale is used for calculating powers and roots, specifically for finding the square roots of numbers. Also used to calculate the trig functions sine & co-sine of right triangles. The 'P' scale appears on German, Japanese slide rules (mine is Japanese), some other European-made slide rules but not on American -made ones such as Pickett. And no, I didn't yet find mine. It may be in the attic with some slot car parts.

[mickey thumbs]

Fly is known for their scale accuracy on their models. Piper’s LM raced with gold 5-spoke wheels in 1968.

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When he later ran it at Goodwood the wheels were silver. That’s him in the green jumpsuit.

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The car was not homologated when he first raced it so it ran as a prototype and he took a lot of liberties when preparing it for the track. So the choice of wheel style is up to the builder - wires or five-spoke- I think both look great on this car.

[Mark Onofri]

I know what the Pythagorean theorem is. I didn't even have to Google it.
The sum of the sides are greater than the hypotenuse. Knowing that, saved me from getting fired when I first started plumbing. It was a real jaw dropper when I answered the question: why do we use 45°(1/8) bends? With that!📐

[Bill from NH]

Actually, it's the sum of each side of a square triangle squared equals the hypotenuse squared. That's what a 3-4-5 triangle is for, it makes a perfect square angle.

[Dave Crevie]

Exactly.   a² + b² = c².  Here's a more compete explanation;

 

https://www.grc.nasa...ket/pythag.html

 

The "P" scale makes it quick and easy to find those squares. 

[John Luongo]

great looking car, mickey. would be a nice slot car body. when i attended accident investigation classes at the academy, i told my lieutenant i would bring my slide rule to calculate delta V. he said they have an app for that now.

[Mark Onofri]

And yet, no app for the black bird. But it flew at a classified mock speed.
Ooonly in America. I apologize, I'm stuck in a Zappa " Freak Out" mode.
Off to a chain hobby shop to procure more paint. I can remember when Testors had ¢5 printed on the cap. Now, there isn't enough room for the price. I'm glad it's not pumpkin season. Last time I was overwhelmed by pumpkin spice everything.
(What a pumpkin)

[Bill from NH]

When you go to HL, look at the Tamiya paints. They probably will have a good selection of colors in both solvent-based & acrylics.  I don't recall the nickel bottles of Testor, but I do remember the dime bottles, of which I had many. I saw a YT video on paints the other day. In it, the 1/4 oz. Rustoleum rebadged Testor bottles were $1.99. Unless you buy flats, the Testor enamels dry with a great shine. Unless you have a food dehydrator to speed up the drying time, they take several days to completely dry.

[Dave Crevie]

And yet, no app for the black bird. But it flew at a classified mock speed.
Ooonly in America. I apologize, I'm stuck in a Zappa " Freak Out" mode.
Off to a chain hobby shop to procure more paint. I can remember when Testors had ¢5 printed on the cap. Now, there isn't enough room for the price. I'm glad it's not pumpkin season. Last time I was overwhelmed by pumpkin spice everything.
(What a pumpkin)

 

Mach 3.2 is the official top speed. Using 761.21 mph as the speed of sound, that is 2435.863 miles per hour. Of course, that constant changes with elevation, air density, humidity, etc. Here's a little more info for anyone interested. Not sure what all this has to do with the price of paint, though. 

 

https://www.lockheed.../blackbird.html

[Mark Onofri]

🤔tings dat start with a "P"
I call my female friend the S*" Poodle. No Billnh, she's a human!
Oooooooooh, I know one:
PAINT
Wich is kinda what this is about.
I narrowly survived my trip to the (name withheld) hobby l***y. Don't know what the sales people are like in your area but, here they are total ***ts. ¢99 change because...a penny would break them.
And, I couldn't make this up if I tried but,care to guess what item was prevalent?????
In July????

[Mark Onofri]

The blue in the centre is Testors 0611 on the left is 2/3 Blue 1/3 white.
The colour on the car is also Testors but, IDK what shade because it came in a group of colours. Not much difference between the darker ones. The mixed one looks kinda putrid to me. Isn't this fun?
Rather than sand it and loose the details. I'll opt to soda blasting. It has a dual purpose of removing the paint and,if I'm fast enough, it'll mask the sent of spilled reducer. At least I didn't douse my phone with it..... Like I've done with acid flux on numerous occasions.

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[Mark Onofri]

I had purchased this one a while ago. Had I looked at it then, I would have sent it back. In the listing,it appeared to be a unassembled kit. Live and learn. I must say, it's a excellent job. It's not painted, but, highly polished? Anyone know if these numbers were offered for this car? Also, if anyone is interested, I'll post all the paperwork that came with it.
As for the blue monster, I've been procrastinating on a up date. I've been testing different blast mediums. The results, were almost surprising.
Don't touch that dial.

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[Mark Onofri]

One last picture. Only reason I'm posting this is that I just noticed the groovy license plate. Almost looks like a NYS plate but,as far as I can tell it's Michigan or Mary Land.

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[SpeedyNH]

wow that's a perfect one 

[Mark Onofri]

I the last episode, I had stated that I would elaborate on blasting. Here goes.
Ok, anyone care to guess which one worked best?
Dave, the SR-71 blackbird has EVERYTHING to do with paint. As soon as I figure out what that is, I'll let you know.

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[Martin]

Could it be Pennsylvania? it is blue with yellow border. I first thought it was California.

But those have no yellow border .

 

 

I use baking soda in a sand blasting cabinet for light duty cleaning, it does not harm the metal, never tried it on paint.

Let us know Mark.

It does have 100+ uses.

[Mark Onofri]

Wow! I forgot about Pennsylvania. Good eye Martin 🔬.
Funny thing, on the Corvair, problem was adhesion. Anyone care to take a wild guess what the problem is now? With the vair, even the doner parts, baking soda blasting worked beyond my expectations. On this car,glass beads struggled to put a dent in it!
I resorted to Model Masters dried paint solvent. Didn't want to go there but, I could only get so much from #400 wet/dry paper.
In the top photo, the car in the for ground is a static model. Martin,if you look closely, you'll notice the wee tiny Ferrari insignias. I had planned on preforming the blue/yellow paint on it. Only, I couldn't bring myself to sacrificing the decals. I know, microsol/Microset, never had any luck with either. So, until the technology comes around to remove them, they are ok where they are.
In the second photo, proof that almost anything is possible. One thing that's not possible , even if I was a illusionist, I have ZERO chance of making Claudia Schiffer's panties disappear.
So, when you find yourself in a relationship and your not a illusionist.....
Wait a minute, let me rephrase that: if you find yourself in a similar situation, don't give up! I have given up on Claudia (for the moment.) Hay Rockie, watch me pull her..... out of her...
Next time something I hope you'll really like.

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[Dave Crevie]

I snipped this out of a publication from the Museum of Flight because I know no one would believe me. The Blackbird isn't black, it's blue. The blue tinge comes from an additive designed to make the plane more invisable to radar. When I was at Pima, I spent an hour or so going over their SR-71, and in the bright Arizona sun, I could see the blue hue in the paint. So it is actually a Bluebird.

 

 

 

If you want to paint your GTO blue, Mark, maybe SR-71 blue would be a choice. In any event, keep on doing what you are doing. You are not the only one learning from your posts.

[Mark Onofri]

Glad to hear that Dave! You get to have all the fun. I thought I was lucky to be next to a apache helicopter. Talk about intimidating! Aside from the radar absorption and what is in the post,is the blue from the boundary layer friction on the titanium changing the hardness? There are countless other things we can never know about it!
Oh, now I kinda remember. The correlation between paint and the SR-71 is slide ruler that I had jokingly said I used to mix the paint. It's hard to believe that the SR-71 was engineered with just slide rulers! Or was it?

[Dave Crevie]

Geeze! It's true that Kelly Johnson and his boys used slide rules for most of the simpler calculations in designing the SR-71. As to the blue additive, it is still a secret. Quite a few years ago, my father's brother was a docent at the Pima Air Museum, and it was always a number one priority to go there when we were visiting, where I pretty much had the run of the place. I was interested in several of the features of the Blackbird, so they brought over a rolling stairway which allowed me to look down at the plane from above. One of the things I noticed was the large gaps in some panels, and one of the docents explained about how much the titanium skin would expand during flight. At Mach 3.2, the skin heats to 400⁰ C. Using the formula for thermal expansion of metastable beta titanium, (delta)L = 9*LO* (delta)T, you get 3cm expansion for every 1000cm length. The temperature cycling has little effect on the hardness of the titanium skin. The biggest problem was fuel leakage. When the plane was cold, it leaked like a sieve. It needed to be at operating temp. for the seals to close up.

 

 

P.S.  Got your PM    

[Mark Onofri]

Way cool info. Taking a break from this and going to crash test @ Speedies Fast lane.
Like real cars, drive it as hard as possible until it breaks. If it breaks, it sucked anyway and needed to be upgraded!