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Author Topic: Brodak Speed Results  (Read 5881 times)

Online C.T. Schaefer

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Brodak Speed Results
« on: June 15, 2016, 07:40:57 PM »
The dust has settled on the Brodak speed field. Today was the 'official' speed day but Paul encouraged entrants to fly on Monday and Tuesday as well. We (The Middlesex Wrecking Crew) took advantage of the opportunity and flew the Fox planes on Monday and, both classes on Tues. Weather was good all 3 days. I'm sure there will be a full report of all contestants before long but this will cover the top spots.
Fox .35 Speed 1. C.T. Schaefer   107.4
                      2. Al Ferraro        105.4
                      3. Jim Vigani       100.27
                      4. H. Nelson        100.2
Perky Speed    1. R. Whitney       114.1
                      2. Al Ferraro        112.3
                      3. H. Nelson         109.17
                      4. C.T. Schaefer   104.6
                      5. Dave Hallas     99.3

So. Those are the facts. Another fact is that the 17 year cicadas are here and when there is a plane in the air they seem to be attracted to the sound and then swarm around the circle and the pilots literally wear them while trying to concentrate on keeping their screaming craft in the air let alone in the groove! It definitely put an extra fun factor on the festivities!!
   There were a number of FOX Fatalities. A couple of collapsed pistons and a free flying crank/spinner assembly which, fortunately, did not hit any soft targets. We saw a nice rear intake version that needs a bit more R/D. The three top scores were posted by  the Middlesex Wrecking Crew. We spent a lot of time test flying. In other words we ran the crap out of them and suffered no mechanical problems. In order to lend encouragement to other speed seekers out there, the engine in the winner was built with  a blend of ALL Fox .35 parts. No custom machining or low production parts and........ it is still .35 ci.

Perky was also quite a hard working but fun event. Hats off to Bob Whitney for keeping his eye on the prize for a number of years and, today, at last, raising the Perky bar to a new level. Al's plane put in his top number on the last attempt of the day. He feels that there is still a bit left in there but we just ran out of time. Next year? Henry put up what seemed to be two methodical attempts for his solid performance. While not as fast as the top guys, my perky performed well but just would not rise any higher. Despite that I felt pretty good about the performance of my almost 45 year old Goodyear motor that has been sitting in a box for 30 years. Is there more in there? Tune in next year. More details may come along but I am tired now.  Hope this is of interest.  TS

Offline eric david conley

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Re: Brodak Speed Results
« Reply #1 on: June 15, 2016, 08:48:53 PM »
     Thanks for the nice report, you did good, and you did good on the report.
Eric

Offline john e. holliday

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Re: Brodak Speed Results
« Reply #2 on: June 15, 2016, 09:46:36 PM »
Way to go guys.  Just goes to show that practice and experience does the job. H^^
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Fred Cronenwett

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Re: Brodak Speed Results
« Reply #3 on: June 16, 2016, 04:09:29 AM »
Did anybody get some pictures of the models? Henry was a little bit slower than he ran here in St Louis

Fred
Fred Cronenwett
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Model Aviation CL Scale columnist

Offline Bob Heywood

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Re: Brodak Speed Results
« Reply #4 on: June 16, 2016, 05:58:55 AM »
Tom,

It was a pleasure to meet you and Al. That 107 sounded really stout. It was cool!
"Clockwise Forever..."

Offline Ken Burdick

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Re: Brodak Speed Results
« Reply #5 on: June 16, 2016, 10:29:46 AM »
well that concludes putting the fun back into speed. Good job to all.

Offline Motorman

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Re: Brodak Speed Results
« Reply #6 on: June 16, 2016, 12:44:54 PM »
What engine did Bob use in Perky?

MM

Offline Paul Smith

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Re: Brodak Speed Results
« Reply #7 on: June 18, 2016, 07:19:48 AM »
Open the attached Excel Spreadsheet for ALL Brodak Speed scores.

It works OK.  See the control box in the lower left corner and click it.
Paul Smith

Offline john e. holliday

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Re: Brodak Speed Results
« Reply #8 on: June 18, 2016, 05:47:01 PM »
Will t down load for this old man. ???
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline jfv

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Re: Brodak Speed Results
« Reply #9 on: June 18, 2016, 07:53:25 PM »
Did anybody get some pictures of the models? Henry was a little bit slower than he ran here in St Louis

Fred

Here's the top 3 in Fox Speed.  Right to left: Al Ferraro - 2nd, Tom Schaefer - 1st, Jim Vigani - 3rd.  All Middlesex members.
« Last Edit: June 18, 2016, 11:10:58 PM by jfv »
Jim Vigani

Offline Al Ferraro

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Re: Brodak Speed Results
« Reply #10 on: June 19, 2016, 08:12:12 AM »
Did anybody get some pictures of the models? Henry was a little bit slower than he ran here in St Louis

Fred
Brodak has an altitude over 1000 feet, so speeds should be slower than most other places.
Al

Offline Paul Smith

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Re: Brodak Speed Results
« Reply #11 on: June 19, 2016, 08:52:38 AM »
Try flying in Death Valley.

While "high" altitude can reduce HP, it also reduces drag.   You can recover HP with reduced head clearance, but the drag is still reduced.  So maybe a little higher is BETTER.

Detroit is 593 feet, Brodak 1047, Dresden,  Muncie and Dayton are in between.  The barometer fluctuates more than that on a normal day, not enough to worry about.  Unless you're doing a an instrument landing in foul weather.
« Last Edit: June 19, 2016, 09:35:35 AM by Paul Smith »
Paul Smith

Offline Al Ferraro

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Re: Brodak Speed Results
« Reply #12 on: June 21, 2016, 11:03:37 AM »
  Naturally aspirated engines lose about 3.5% of their power per 1000 feet of elevation. If you watched NHRA drag racing you will see that the Pro Stock cars and bikes ET a lot slower at the higher elevation tracks. The Top fuel guys will spin the blower faster to make up for thinner air so the higher elevation does not hurt their ET. I don't think the reduced drag plays into a quicker ET or else the Top Fuel and Funny Car guys would be running lower ET at the high elevation tracks, so I would say Higher is NOT better.
Al

Offline Paul Smith

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Re: Brodak Speed Results
« Reply #13 on: June 21, 2016, 05:02:42 PM »
OK, Muncie is 500 feet lower than Carmichaels.  Maybe the speeds will be faster.  But I doubt it.  This is in the indifferent range.

Run a contest at 6,000 feet or 11,000 feet and you will have an issue.
Paul Smith

Offline Motorman

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Re: Brodak Speed Results
« Reply #14 on: June 21, 2016, 09:03:08 PM »
They go slower with allot of bugs hitting the lines.


MM

Online C.T. Schaefer

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Re: Brodak Speed Results
« Reply #15 on: June 22, 2016, 06:29:03 AM »
I forgot one important item about the Brodak. A big thanks to Paul Smith who picked up the ball and ran three speed classes this year! In addition, he flys many events throughout the week. Way more energy than I could muster! So, thanks again for gittin' her done.   TS

Offline bob whitney

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Re: Brodak Speed Results
« Reply #16 on: June 22, 2016, 01:26:12 PM »


 my perky had a Nelson R EX  and Mini pipe with a stock APC 6.5/5
rad racer

Offline Jim Carter

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Re: Brodak Speed Results
« Reply #17 on: June 22, 2016, 04:06:07 PM »

 my perky had a Nelson R EX  and Mini pipe with a stock APC 6.5/5
Congratulations my friend!  Congratulations!!

Offline Motorman

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Re: Brodak Speed Results
« Reply #18 on: June 22, 2016, 06:39:04 PM »

 my perky had a Nelson R EX  and Mini pipe with a stock APC 6.5/5

Bobby, I think I have a mold for that prop.

MM

Offline bob whitney

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Re: Brodak Speed Results
« Reply #19 on: June 22, 2016, 08:38:34 PM »


I do also
rad racer

Offline Motorman

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Re: Brodak Speed Results
« Reply #20 on: June 24, 2016, 09:12:01 AM »
Was that Nelson a 12mm shaft with the high timed diesel sleeve or one of the new ones?


Thanks,
MM

Offline bob whitney

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Re: Brodak Speed Results
« Reply #21 on: June 24, 2016, 12:40:38 PM »


  it has a screw in backplate , and a modified -modified Dick lambert piston and liner, dont know the crank OD
rad racer

Offline Motorman

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Re: Brodak Speed Results
« Reply #22 on: June 25, 2016, 09:55:34 AM »
Dare I ask venturi size and configuration? I have allot of racing 15's which are basically useless right now. A Perky might put them back to action. Can we use composite props?

Thanks,
MM

 

Offline bob whitney

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Re: Brodak Speed Results
« Reply #23 on: June 25, 2016, 11:22:02 AM »


 .260 with a Pee Tube  any prop
rad racer

Offline Motorman

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Re: Brodak Speed Results
« Reply #24 on: June 25, 2016, 01:35:35 PM »
I found some perky plans but what is the wing span so I can make sure they are full size. What is the line size? Trying to talk the wife into flying it but she's worried about torque roll. Is 1/2oz tip weight enough?

Offline Paul Smith

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Re: Brodak Speed Results
« Reply #25 on: June 25, 2016, 06:08:08 PM »
It's an 18" wingspan.  With the tapered wingtips the mass of the tip weight is only about 8" outboard.  So use plenty and reduce it if you can.  Torquing-in is a real issue.
Paul Smith


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