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Post  batjac on Sun Jul 07, 2019 12:27 am

I found this online a few years ago.  I think it was on RCG, but I haven't been able to find it again.  I know that everyone loves online calculators to get their speeds to the 1/1000 of a MPH.  But I'm still old school, and love slide rule whiz wheels.  I have used this slide rule against a computer spreadsheet, and it's accurate to within a half of a MPH with the online calculated speed.

Speed calculator, the Old School way. Speed-calculator


I keep the one I made up in my flight box.  Here's the one I made up from the .pdf plans.


Speed calculator, the Old School way. DSCN3082_zpsba11ae2a
Speed calculator, the Old School way. 0bcaaf0b-2fdb-4970-8fce-569bc79910be_zps6ce2dadf
Speed calculator, the Old School way. DSCN3090_zpse1d66440



I have the copy on three different drives, just in case, so that I don't lose it.  But I thought that I'd post it here for Y'all to see.  If anyone wants it, I can email a copy of the .pdf I have.  It'd be a shame to for this to get lost to history.

The Archivist Mark
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Post  944_Jim on Sun Jul 07, 2019 1:27 am

Oh, ohoh , me! I want a copy! Pretty please? I hope to need it shortly!

I'/ll pm my email address tomorrow.
TIA!
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Post  Levent Suberk on Sun Jul 07, 2019 3:00 am

Thanks for this.

Speed calculator is a supplement of Aeromodeller March 1960 issue and available in ebay if you want original one.

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Post  Mike1484 on Sun Jul 07, 2019 9:51 am

Good stuff Mark .Thanks for posting this speed chart . I'm sure there are a few of us that will be using it .

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Post  RknRusty on Sun Jul 07, 2019 11:24 am

When I was in elementary school, we had little project magazines called "Think and Do."
Mark, I admire your ever-present embodiment of thinking and doing, always coming up with interesting examples of thinking up and executing fun and useful stuff. You should visit the Hangouts show again and let us see this one. We talked about your control line simulator the other night too.

Fyi, it looks like Youtube/Google is finally about to remove the Video Hangouts. It's not clear that they will replace it with anything, so come August 1st, things may get bumpy while we try to figure out a new way to have a group video chat that does all the things we have been enjoying for the past 2 years.
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Post  aspeed on Sun Jul 07, 2019 1:03 pm

Maybe it would be possible to start a thread on RCG with the PDF? I am not sure how that works, but it would be spread out to more guys that wouldn't have to pester you. Rusty, I have been lurking on the Hangouts for a couple months now. Hope it keeps going somehow. Saw a few of the guys at Brodak's. Kind of odd, seems like you know them, but they don't know you.
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Post  Cribbs74 on Sun Jul 07, 2019 4:05 pm

Mark,

This would be a good tool to have for the upcoming speed event (RWYB)

Pretty sure the email link works in my profile, could you please send it along if you have a moment? At least before the 31st... Very Happy

Thanks,

Ron
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Post  NEW222 on Sun Jul 07, 2019 4:42 pm

Great job. I too had that file a while ago and also made a few of them and gave them away to fellow modellers in my CL club. Funny too as I also laminated the ones I made too. The way I held them together was with a leather punch and eyelet plier set. I have the ones listed here.
https://www.princessauto.com/en/detail/leather-punch-with-eyelet-pliers/A-p8308231e
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Post  crankbndr on Sun Jul 07, 2019 4:46 pm

Or the other old way     4th of July Flag lol!

Speed calculator, the Old School way. Pi210
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Post  batjac on Sun Jul 07, 2019 11:24 pm

Jim and Ron, .pdf's on the way.

Levent, thanks for the magazine reference.  Now I have a reference for further research.

New,  that's a great idea.  I have a couple of punches, so I'll print out another template and laminate it, then try using the punch and eyelets.  My big issue will be in getting the holes centered...

Mike, you're most welcome.  That's why i wanted to ensure more people know about this and possible make their own.

Rusty, I'll try to get on Friday night.  I get home from work at just about the time Y'all are signing off on Mondays.

Aspeed (sorry, I don't know your first name), I think someone else is going to be making a thread over on RCG.

Crank, that'd work, but I don't have enough fingers on my hand to do that calculation at the field.

The Distributor Mark
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Post  Surfer_kris on Mon Jul 08, 2019 5:16 am

crankbndr wrote:Or the other old way     4th of July Flag lol!

Speed calculator, the Old School way. Pi210

Well that clearly will not work... Wink

Who would want to know the speed in terms of feet/second and how do you incorporate the number of laps etc.?!
Far to complicated... Wink
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Post  944_Jim on Mon Jul 08, 2019 6:40 am

batjac wrote:
Crank, that'd work, but I don't have enough fingers on my hand to do that calculation at the field.

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Post  crankbndr on Mon Jul 08, 2019 7:12 am

Surfer_kris wrote:
crankbndr wrote:Or the other old way     4th of July Flag lol!

Speed calculator, the Old School way. Pi210

Well that clearly will not work... Wink

Who would want to know the speed in terms of feet/second and how do you incorporate the number of laps etc.?!
Far to complicated... Wink


Algebra was the hardest class I took in 12th grade grade and I flunked it, for my business I did have to learn to use basic formulas.
In a state exam I took I had to figure the volume and surface area of a doughnut.
For more laps you would multiply them times C, T can be anything.

If you know R all you need is T Old Bugger
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Post  crankbndr on Mon Jul 08, 2019 8:12 am

Al Gore invented this

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Post  aspeed on Mon Jul 08, 2019 8:48 am



Aspeed (sorry, I don't know your first name), Alan Feil. Though it was a secret.
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Post  Davenz13 on Mon Jul 08, 2019 4:47 pm

Hi Mark
I'd like to have a copy if I may.
Will pm you email.
Dave
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Post  batjac on Tue Jul 09, 2019 12:48 am

944_Jim wrote:
batjac wrote:
Crank, that'd work, but I don't have enough fingers on my hand to do that calculation at the field.

The Distributor Mark

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Not even if I took off shoes, socks, and dropped my shorts....

The Mathemagical Mark
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Post  944_Jim on Tue Jul 09, 2019 9:18 am

Got mine. Thanks Mark!

I'll try to plug it in at RCG later tonight, unless I get beat by one of the other recipients.

Oh, regarding doing the math the analog way...would Speedos be appropriate attire for exceeding the 20-digit math? Shocked
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Post  NEW222 on Tue Jul 09, 2019 3:30 pm

To help answer my methods... I taped both wheels in place where I wanted them aligned. Then I punched both together at the same time. But, if my memory serves me correct, at least one, if not both tools were just a bit too small depth wise to punch, and or crimp, but I carefully bent them to fit and had no ill effects.
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