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Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Cox_ba12




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Cox Engine of The Month
March-2024
balogh's

"COX Budapest" .049 engine



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Post  MauricioB Wed Sep 27, 2017 10:12 pm

balogh wrote:Thanks Mauricio, and sorry to have caused you frustration. We know that - thanks also to the inter-changeability of parts - even  COX often combined parts in the same engine type and this is why a plethora of various engine combinations exists with thin wall, thick wall, stepped wall cylinders that are either tapered or not, anodized or un-anodized parts, plastic and aluminum carbs. etc.

The "tach" is an Americanism I learned here on CEF, meaning to measure the engine rpm with a tachometer... Smile

No friend, in no way has caused me frustration, on the contrary, I am grateful to You and to all who contribute information to know and be serious in an issue when speaking.
If I present this engine to my friends, or with a photograph in the monthly photo contest of CEF, I would like to call it by its real name ... but I do not know how to call it ... it is rare ....

If measured at rpm, give 15000 with 5.7 x 3 APC with 20/25/55 castor / nitro / methanol

I'm going to ring the bell to the ESTES factory, they probably give me an explanation hahahaha Very Happy Very Happy Very Happy
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Post  balogh Wed Sep 27, 2017 10:24 pm

You may want to call it "Cooler Bee" as this does not run so hot as a Killer Bee? Very Happy
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Post  MauricioB Wed Sep 27, 2017 10:33 pm

balogh wrote:You may want to call it "Cooler Bee" as this does not run so hot as a Killer Bee? Very Happy

winter bee ??? LOL
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Post  MauricioB Wed Sep 27, 2017 10:40 pm

here I show you, buy these specimens as bees, a .051 and .049, in their boxes with their manuals, with keys of disarmament, with (calcamonías)- (stickers), pay US$ 143.00 for each one of them ... as me should i feel? tongue
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02718
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02719
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02720
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02721
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02722

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Post  balogh Wed Sep 27, 2017 10:47 pm

Mauricio,

as New In Box (NIB) engines, they typically sell at high price level on ebay. I am not sure what their market price is. As far as I am concerned I prefer buying TeeDee-s NIB in chrystal box at around 75-80USD plus shipping.

I also like to build Bee type engines from parts I buy on ebay or from Bernie.I have a few NIB TD049 cylinders (stepped wall design from the 1970-s) with pistons, that I will assemble into Killer Bee type configurations with the red backplate.-

These are the strongest reedie engines
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Post  MauricioB Wed Sep 27, 2017 10:56 pm

balogh wrote:Mauricio,

as New In Box (NIB) engines, they typically  sell at high price level on ebay. I am not sure what their market price is. As far as I am concerned I prefer buying TeeDee-s NIB in chrystal box at around 75-80USD plus shipping.

I also like to build Bee type engines from parts I buy on ebay or from Bernie.I have a few NIB TD049 cylinders (stepped wall design  from the 1970-s) with pistons, that I will assemble into Killer Bee type configurations with the red backplate.-

These are the strongest reedie engines

I understand perfectly .... I have bought these engines in good faith, with their boxes, with their manuals and with the backing of the manufacturer that announce it with the name of Killer Bee, so I have two Killer Bee one .049 and another .051 . If there is a difference, it is not a problem for me as a customer, but clearly for the manufacturer ... and if they would be active now, it would be a good topic to discuss ...
mmmm .... (I think), I'm happy to have them! cheers Small Cox Logo
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Post  balogh Wed Sep 27, 2017 10:57 pm

Mauricio,

the engines sold from Corona, California date back to 1990-96 when COX moved in their new headquarters from Santa Ana. COX was called COX Products between 1993 and 1996 so as your box shows COX Products, this is from that period.

So your engines are not from the later, Estes period, and as such, represent - in my eyes - a much higher value than what Estes may have sold when - as someone explained here once -  hastily put components together from whatever they may have found in their stocks to sell out ...maybe I see it wrong.
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Post  MauricioB Wed Sep 27, 2017 11:07 pm

balogh wrote:Mauricio,

the engines sold from Corona, California date back to 1990-96 when COX moved in their new headquarters from Santa Ana. So your engines are not from the later, Estes period, and as such, represent - in my eyes - a much higher value than what Estes may have sold when - as someone explained here once -  hastily put components together from whatever they may have found in their stocks to sell out ...maybe I see it wrong.

That is why I am happy with me, I have acted in good faith, pay every dollar I was asked and defended the Cox brand out of respect to those who from the beginning have done things well and off ... I suppose if the Cox factory would see this post now, I would try to solve the problem, (if it really exists), I do not have what the manufacturer says he sold me, they would probably send me the corresponding pieces for the sole reason of maintaining their HONOR, so I assume and feel it.
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Post  1/2A Nut Thu Sep 28, 2017 12:24 am

Check your NV see which part they used: 78 TPI or 128 TPI

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5710
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Post  MauricioB Thu Sep 28, 2017 12:39 am

1/2A Nut wrote:Check your NV see which part they used: 78 TPI  or 128 TPI

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5710

Heavens...! Crying or Very sad Crying or Very sad
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02724
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Post  1/2A Nut Thu Sep 28, 2017 12:47 am

Can you zoom in on the threads?
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Post  1/2A Nut Thu Sep 28, 2017 1:20 am

Should have a thrust washer too.

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5711
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Post  MauricioB Thu Sep 28, 2017 1:22 am

1/2A Nut wrote:Can you zoom in on the threads?

Sorry I was in the workshop working on a model! Very Happy ... now I take a picture, see if I can ?!....
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Post  MauricioB Thu Sep 28, 2017 1:37 am

here the needle of my Killer

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Aguja_10

Yes! you have a washer
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02725
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Post  MauricioB Thu Sep 28, 2017 1:50 am


The needle above is my Killer's
The one below is that of a Surestar

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Aguja_11

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Post  1/2A Nut Thu Sep 28, 2017 2:03 am

Here is a pic of my Killer Bee with a Galbraith head and Nelson Glow plug
Carbon HQ Prop 4x4.5 and Sportsman .049 spinner, will post a vid when I
bench test it.



Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5713



NV comparisons: 78 TPI vs 128 TPI

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5712
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Post  MauricioB Thu Sep 28, 2017 2:09 am

1/2A Nut wrote:Here is a pic of my Killer Bee with a Galbraith head and Nelson Glow plug
Carbon HQ Prop 4x4.5 and Sportsman .049 spinner, will post a vid when I
bench test it.



Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5713



NV comparisons: 78 TPI vs 128 TPI

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5712

Excellent, beautiful engine friend! Beer Cheers
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Post  balogh Thu Sep 28, 2017 2:13 am

Hi Brad the KB is a beauty but are you not concerned with the standard plug that in my experience robs power from 049 size engines? I would rather go with the drop in type insert.


Last edited by balogh on Thu Sep 28, 2017 2:17 am; edited 1 time in total
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Post  1/2A Nut Thu Sep 28, 2017 2:13 am

Cheers Mauricio I do hope you enjoy your new engines Small Cox Logo

Beer Cheers
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Post  1/2A Nut Thu Sep 28, 2017 2:18 am

Hello Balogh

The new pic is with a high performance Galbraith racing head and Nelson Glow plug
Good for another 500 - 800 rpm on average depending on engine type. I have had
good numbers with the stock Cox high compression head, I have only tried the insert
plug types with my Norvels.


Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag5714
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Post  MauricioB Thu Sep 28, 2017 10:07 am

1/2A Nut wrote:Cheers Mauricio I do hope you enjoy your new engines Small Cox Logo

Beer Cheers

Thanks friend Brad! ... I did some new tests and comparisons, then the results! ...
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Post  MauricioB Thu Sep 28, 2017 10:14 am

Attach a Cox 5 x 3 propeller
Fuel 20/25/55 - R / N / M
ALTA RPM Killer: 17880 I like them!!
LOW RPM Killer: 10950
Glow Plug: High Compression
HIGH - LOW, refers to the use of the accelerator ring
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02812
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02810
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02811


Last edited by MauricioB on Thu Sep 28, 2017 10:35 am; edited 1 time in total
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Post  MauricioB Thu Sep 28, 2017 10:34 am

Attach a Cox 5 x 3 propeller
Fuel 20/25/55 - R / N / M
ALTA RPM Medallion .049: 18690 Glow Plug:  High Compression
LOW RPM Medallion .049: 8250 Glow Plug:  Low Compression

HIGH - LOW, refers to the use of the accelerator ring
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02819
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02816
Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Dsc02817


Last edited by MauricioB on Thu Sep 28, 2017 10:50 am; edited 1 time in total
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Post  MauricioB Thu Sep 28, 2017 10:48 am

Brad, you have an original Killer Bee, where RPM should run the engine with a 5x3 Cox propeller, like the one I put into my experience? ... thanks! Huh...
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Post  1/2A Nut Thu Sep 28, 2017 2:35 pm

I will bench test the engine as shown in the last pick and vid the effort.

I have not ran the engine as a reed valve I have ran it as a Killer TD  Small Cox Logo

Vid of the second engine run was doing a break in by flying rather than on the bench
NV is a bit rich since this engine has less than 1 oz fuel ran through it at the time of the vid.

Buy a Cox! ... but, what exactly do you buy?: KILLER BEE .051 1996 - Page 2 Imag0512




AmpAbuser
Published on Apr 5, 2015


I am breaking in the engine in the air with a APC 4.5 x 4
This is the second engine run 20.5k rpm in the hand and best level
pass at 24,160 rpm needle is set bit rich. After a few more runs I expect
a fully broken in engine getting about 25k needle peaked.

Engine includes a V shape flywheel with the rod pin drilled out originally made for the TD .050 RC
to up rpm for a none SPI engine using a muffler - Note I am using a Galbraith glow head with  
Nelson turbo plug. The Killer Bee is a original May 1995 engine bought new never used. I robbed
the tapered piston and cylinder for the TD frame comes with SPI function which can be heard on
start up with a notable tone clearing burst of power. Note the Killer Bee has a lighter piston
weighs .5g less than a stock .049 piston. Installed a phenolic thrust washer for electric starter use.
Run time in rich mode 1oz fuel tank 25% nitro 5 mins 44 sec.
11.4 oz plane 5 ch with flaps / rudder / ailerons / throttle / elevator.

RC Plane
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