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» Public service announcement for all Geezers!!!
by rsv1cox Today at 2:15 pm

» Cox Engine Forum Speed Contest 2018!!!
by fredvon4 Today at 11:46 am

» Goldberg Hi-Thrust Viking/ TD .049
by getback Today at 11:24 am

» My Cox Minibike
by Oldenginerod Today at 7:41 am

» Tee Dee aluminium backplate mounts?
by 1/2A Nut Today at 7:31 am

» TIEBREAKER-POLL **COX-ENGINE-OF-THE-MONTH** (June 2018)
by Admin Today at 3:10 am

» Recent engine acquisitions
by MauricioB Yesterday at 10:04 pm

» U-control thrust-offset
by batjac Yesterday at 9:15 pm

» R/N Spad/D7 kit and Shive DR-1
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» Sticky Cox Engine
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Cox Engine of The Month
May-2018
Kim's

"War Dog hauls the 2M B.O.T. out of Uncle Wayne's backyard"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop
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World of Aviation

Cox Engine Forum Speed Contest 2018!!!

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Fri Oct 13, 2017 2:58 pm

Okay, motor mounts done. All that's left is to build an airplane around it.

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Speed

Post  Dane Martin on Fri Oct 13, 2017 4:05 pm

Jim emailed me to check this post out. Thanks!
I skimmed through, is it 2 line only? Or can I run monoline?
And I apologize in advance everyone...... Devil
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Fri Oct 13, 2017 4:25 pm

Dane Martin wrote:Jim emailed me to check this post out. Thanks!
I skimmed through, is it 2 line only? Or can I run monoline?
And I apologize in advance everyone...... Devil

2 line only
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Fri Oct 13, 2017 4:58 pm

Here's a link to control line plans with a span of 20"or less. There's everything from mouse racers and proto planes to full on stream liners if your looking for a plan to build from or inspiration to design your own.

https://outerzone.co.uk/advanced/search_tag_matrix/index.asp
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  Admin on Fri Oct 13, 2017 9:15 pm

fredvon4 wrote:I am officially NOW a sponsor with:
1-- $100 US(or foreign country equivalent) Cash prize to First place (evidenced by CEF popular vote)
1-- Brodak or RSM kit of choice from the 1/2 a list of kits for Second place (evidenced by CEF popular vote)((basically allocated $75)
1-- Sig MFG or Tower single quart fuel cost for any blend desired for Third place (evidenced by CEF popular vote)(( basically allocated $30))

Now that is cool! RC Plane

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Mon Oct 16, 2017 4:23 pm

Engine mount pretty much done, wing cut out. This will definitely need to be a clockwise flying model.

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Tue Oct 17, 2017 6:10 pm

JPvelo wrote:Engine mount pretty much done, wing cut out. This will definitely need to be a clockwise flying model.


ShockedDamn!Popcorn.... I really hope that this contest gains some momentum. We need a new "rules" thread........ and a new graphic (pokes Jacob Smile  ) to draw attraction.
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  Admin on Tue Oct 17, 2017 7:51 pm

roddie wrote:
ShockedDamn!Popcorn.... I really hope that this contest gains some momentum. We need a new "rules" thread........ and a new graphic (pokes Jacob Smile  ) to draw attraction.

I'm working on it! Very Happy Jim has already sent me some pictures to use for the graphic.

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Wed Oct 18, 2017 8:37 am

Thank you Jacob! I should have figured as such. I'm just excited about this for its inventive aspect.. and the fact that it's getting around to that time of year where modelers are starting to consider what to build over the Winter.. (at least here in my neck o' the woods! Very Happy )
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  pkrankow on Wed Oct 18, 2017 11:25 am

I have an idea kicking around.

It might not be so good as this last year I haven't flown anything and the only thing I ran at the flying field was a chainsaw...

Phil
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Wed Oct 18, 2017 11:31 am

pkrankow wrote:I have an idea kicking around.  

It might not be so good as this last year I haven't flown anything and the only thing I ran at the flying field was a chainsaw...

Phil

I've flown maybe five times in the last year, if that much. I'm telling myself that will help me overcome my inverted flight instincts and fly clockwise without poking it into the ground.
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Wed Oct 18, 2017 12:00 pm

JPvelo wrote:
pkrankow wrote:I have an idea kicking around.  

It might not be so good as this last year I haven't flown anything and the only thing I ran at the flying field was a chainsaw...

Phil

I've flown maybe five times in the last year, if that much. I'm telling myself that will help me overcome my inverted flight instincts and fly clockwise without poking it into the ground.

I'm WAY behind either of you two... but still "jacked" to "maiden" my Bearcat..



finish my TD-powered T33 Shooting Star.. except... it has no landing-gear.. (dolly-launched) but it's still early-enough in its' stage of development.. that I could affix a wire-gear to it...??  



and maybe build a third model.. ????????????
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Wed Oct 18, 2017 12:17 pm

Roddie,

It would be super simple to tie a landing gear into the engine bearers on the shooting star. Just don't over think it!!!
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  KariFS on Wed Oct 18, 2017 3:43 pm

...or maybe a tricycle gear, one wheel that keeps the nose up and another two at the rear half of the wings. Three wheels might mean more drag but it would sure look cool. The main gear could be low and the wheels small to give it the ground stance of a conventional model.

Oh and JP, about the last picture, are you sure that is the wing and not the stabilizer lol! that thing just has to be really fast just to stay airborne Thumbs Up


Last edited by KariFS on Wed Oct 18, 2017 4:08 pm; edited 1 time in total
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  pkrankow on Wed Oct 18, 2017 3:52 pm

The T33 has tricycle wheels so that would be more scale. Your call.

Phil
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Wed Oct 18, 2017 5:53 pm

KariFS wrote:

Oh and JP, about the last picture, are you sure that is the wing and not the stabilizer lol! that thing just has to be really fast just to stay airborne Thumbs Up

Ha!

That's the wing, I'm designing my own but I'm using these as a guide/inspiration



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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Thu Oct 19, 2017 7:57 pm

My balsa "pan" is starting to take shape. I'm going to finish this model with clear epoxy finishing resin to bring out the design in the wood.

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Thu Oct 19, 2017 8:48 pm

That's a good amount of work there Jim! Thumbs Up Looks rugged.. and we know from experience how important that is. I like and understand the CW flight plan for your model. Maybe some of the previous speed contest entries would have faired better, set up that way?

On a side-note.. did you happen to catch the vids posted by "germanbuddy" on the Lassogeier C/L competition in Germany that was recently posted? There's some sweet "carrier" footage.. that I'm sure would interest you. It's the 2nd of two vids and begins around 03:45:00...

https://www.youtube.com/watch?v=uO87gbA_KGg

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Thu Oct 19, 2017 11:51 pm

Incidentally James... the second photo/plan of your inspiration bears the name of "Bill Dean" I noticed.



I thought that was pretty cool actually!
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Peanut 1/2A speed plane

Post  Mike1484 on Sat Oct 21, 2017 9:52 am

The Peanut was a Warren Kurth design . Bill Dean most likely drew up the plan for the magazine . The original Peanut is at the AMA museum in Muncie Indiana . There were two variants , one with a wood fuselage and one with a pan as I recall . Also they used different motors as best that I can recall .

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  batjac on Sat Oct 21, 2017 3:10 pm

Well, I definitely have no hope of placing in this contest.  I'm entering two planes.  One will be the Dale Kirn 290 Special I built last year but still haven't flown.





An one that is a variation on Tom Jolly's Burp.




The Perennial Loser Mark
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  roddie on Sat Oct 21, 2017 3:21 pm

batjac wrote:Well, I definitely have no hope of placing in this contest.  I'm entering two planes.  One will be the Dale Kirn 290 Special I built last year but still haven't flown.





An one that is a variation on Tom Jolly's Burp.




The Perennial Loser Mark

C'mon dude... don't discount your entries. I LOVE that 290 Special! I'll bet that it hops off the tarmac and boogies!
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Sat Oct 21, 2017 5:17 pm

Mark,

The speed you build at I'm sure you could knock out a "Mini Speedster " type plane in one evening. Here's a link to a black widow cylinder  for $11 after shipping.

https://www.ebay.com/itm/Refurbished-Cox-049-Airplane-Engine-Cylinder-Piston-Black-Widow-049-/281936026986?epid=851909265&hash=item41a4b25d6a:g:ZlIAAOSwFNZWwPNK

There's your race plane right there.



The Pep Talk Jim
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Re: Cox Engine Forum Speed Contest 2018!!!

Post  JPvelo on Fri Oct 27, 2017 5:07 pm

My "Modified 290" engine mount seems like it should work, looking forward to getting a test run on this design.

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Re: Cox Engine Forum Speed Contest 2018!!!

Post  Ken Cook on Sat Oct 28, 2017 7:56 am

Jim, one thing I find that happens when something like this is brought to the table is that your faced with many why can't we do this questions. I in no means am suggesting any alteration of the rules. I'm just throwing this out there because I already own several of these models which don't exactly fit the criteria of the rules in regards to the wheel limit. Most speed contests suggest the 2 wheel rule. However, only a limited event demands the 2 wheel rule. In most of the racing events I have participated in, the rules state that a single wheel gear must be a of a certain size. Seeing that the majority of my planes are one wheel, the only advantage to this is less drag and that's marginal at best. So I'm asking, is a one wheel gear acceptable? If not, completely understood. Ken
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Re: Cox Engine Forum Speed Contest 2018!!!

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