Log in
Search
Latest topics
» Internet buyby rdw777 Today at 11:38 am
» Off topic - Tonka dump truck restoration. 10:27
by rdw777 Today at 11:32 am
» *Cox Engine of The Month* Submit your pictures! -October 2024-
by pman1111 Today at 11:31 am
» I Got Cheated!
by roddie Today at 11:27 am
» Fox .35 Modifications
by BillpointBilly Today at 8:28 am
» Venom Frog
by BillpointBilly Today at 8:26 am
» Carburetor Sprinkler Rod Peak Tee Dee .049 / .051
by BillpointBilly Today at 8:18 am
» Sterlings and Guillows Nieuport 28's
by rsv1cox Today at 7:49 am
» Wen Mac Aeromite/Challenger
by GallopingGhostler Today at 7:29 am
» PSA propellors!!!
by getback Today at 6:55 am
» Wanted peewee 20 fuel tank
by rdw777 Today at 5:39 am
» Cox 020 PeeWee rebuild questions
by balogh Yesterday at 1:01 pm
Cox Engine of The Month
Yet another Killer Bee clone by Estes?
Page 1 of 1
Yet another Killer Bee clone by Estes?
This forum is a virtual gold mine of information on fake Killer Bee engines that were thrown together by Estes, and sold as original. Isn't that fraud by the way?
Mine has the usual mix of parts, with what appears to be a real KB backplate (measured correct intake diameter), and a cylinder with unequal size exhaust slits, plus a 1702 high compression glow head.
The crank however is classic Babe Bee, as is the needle valve. The crank does have the proper no drag drive washer, and starter spring.
It's still NIB so the compression is excellent, but without further disassembly I can't tell if the bore is tapered, or the piston lightened.
What I do notice is that the piston has SPI, but it seems strange to me to have such a large bottom exhaust slit, with only a few thousandths opened for SPI at TDC.
Does anyone here have an original Cox Killer Bee to verify that as correct?
Thanks to Bernie I have the proper crankshafts, and yellow needle valves.
What I don't know is if Cox stopped tapering the KB cylinders toward the end of production?
Thanks for any info guys.
Bill
Mine has the usual mix of parts, with what appears to be a real KB backplate (measured correct intake diameter), and a cylinder with unequal size exhaust slits, plus a 1702 high compression glow head.
The crank however is classic Babe Bee, as is the needle valve. The crank does have the proper no drag drive washer, and starter spring.
It's still NIB so the compression is excellent, but without further disassembly I can't tell if the bore is tapered, or the piston lightened.
What I do notice is that the piston has SPI, but it seems strange to me to have such a large bottom exhaust slit, with only a few thousandths opened for SPI at TDC.
Does anyone here have an original Cox Killer Bee to verify that as correct?
Thanks to Bernie I have the proper crankshafts, and yellow needle valves.
What I don't know is if Cox stopped tapering the KB cylinders toward the end of production?
Thanks for any info guys.
Bill
smooth_bill- Gold Member
- Posts : 229
Join date : 2012-02-19
Age : 87
Location : Beaverton, OR
Re: Yet another Killer Bee clone by Estes?
Is there a date stamped in the box somewhere? I think any engine with a date before Jan 20, 1996 should be genuine Cox KB.
Jason_WI- Top Poster
-
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Yet another Killer Bee clone by Estes?
Hi Jason,
Sorry, I forgot to mention that. There is no date inside the box.
Thanks for your reply.
Bill
Sorry, I forgot to mention that. There is no date inside the box.
Thanks for your reply.
Bill
smooth_bill- Gold Member
- Posts : 229
Join date : 2012-02-19
Age : 87
Location : Beaverton, OR
Re: Yet another Killer Bee clone by Estes?
Most likely an Estes Frankenstein engine unfortunately.
Jason_WI- Top Poster
-
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Yet another Killer Bee clone by Estes?
With the proper crank you are now nearly there a key component to killer rpm is the piston study the photo it is a great way to get a even mill around the inside of the piston wall if every thing is locked down just spin the drill up slowly till done.
Note I took a high performance crank from the TD RC .050 same flywheel and drilled out pin but of course front induction.
A real Killer Bee cylinder and piston new in the box called it a Killer TD here are the results after a short break in.
The Killer TD .049 - Cox RC carb
Breaking in the engine in the air 1st flight 1oz tank
Galbreath Head / Nelson plug
#1 cylinder 2 bypass ports 1 boost flute per port
2nd flight APC 4.5 x 4
22,044 rpm in the hand static - 25% nitro
Best pass at 24,160 rpm / needle is still set bit rich. 67 F. winds 6 to 9 mph
Note I took a high performance crank from the TD RC .050 same flywheel and drilled out pin but of course front induction.
A real Killer Bee cylinder and piston new in the box called it a Killer TD here are the results after a short break in.
The Killer TD .049 - Cox RC carb
Breaking in the engine in the air 1st flight 1oz tank
Galbreath Head / Nelson plug
#1 cylinder 2 bypass ports 1 boost flute per port
2nd flight APC 4.5 x 4
22,044 rpm in the hand static - 25% nitro
Best pass at 24,160 rpm / needle is still set bit rich. 67 F. winds 6 to 9 mph
1/2A Nut- Top Poster
- Posts : 3468
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Yet another Killer Bee clone by Estes?
1/2A Nut wrote:With the proper crank you are now nearly there a key component to killer rpm is the piston study the photo it is a great way to get a even mill around the inside of the piston wall if every thing is locked down just spin the drill up slowly till done.
Impressive performance!
I pulled the back cover again, and find that the piston is not lightened. Since the cylinder in this engine is probably not tapered, there would be little point in reworking (lightening) the piston for higher rpm.
I'm still looking for an original Killer Bee .049 NIB, but with all the clone parts available I don't trust the ones I see on eBay.
Bill
smooth_bill- Gold Member
- Posts : 229
Join date : 2012-02-19
Age : 87
Location : Beaverton, OR
Re: Yet another Killer Bee clone by Estes?
Ask the seller if there is a date on the cardboard insert. No date or after January 1996 then move on. That's what I did to find my genuine one. Takes patience.
Jason_WI- Top Poster
-
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Yet another Killer Bee clone by Estes?
There are three distinct versions, at least.
Post-Estes is the one with a "regular" cylinder / piston, a "regular" crankshaft and a "regular" needle valve
Pre-Estes #2 has the correct cylinder, needle valve and KB crank but the piston is not lightened.
Pre-Estes # 1 has all the correct parts, a.k.a. the "real" one.
After buying several dozen of those engines over the years we finally lucked out and got two "real" ones from the same seller. One went into our house collection and the other one we listed for $295; which took all of 30 minutes to sell.
Post-Estes is the one with a "regular" cylinder / piston, a "regular" crankshaft and a "regular" needle valve
Pre-Estes #2 has the correct cylinder, needle valve and KB crank but the piston is not lightened.
Pre-Estes # 1 has all the correct parts, a.k.a. the "real" one.
After buying several dozen of those engines over the years we finally lucked out and got two "real" ones from the same seller. One went into our house collection and the other one we listed for $295; which took all of 30 minutes to sell.
Re: Yet another Killer Bee clone by Estes?
Cox International wrote:There are three distinct versions, at least.
Bernie,
Thank you, that pretty well sums it up.
However, I'm still curious about cylinder taper. It looks like I'll have to pull my cylinder to see what I have.
Bill
smooth_bill- Gold Member
- Posts : 229
Join date : 2012-02-19
Age : 87
Location : Beaverton, OR
Re: Yet another Killer Bee clone by Estes?
Not sure if the cylinder is tapered and would have to look at the Cox drawings.
Re: Yet another Killer Bee clone by Estes?
My May, 1996 .049 KB has a tapper fit.
1/2A Nut- Top Poster
- Posts : 3468
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Yet another Killer Bee clone by Estes?
And pricing is soaring for some Cox engines. After the $700 Tee Dee 010 (twice), a TD 050 RC for $500, we now have a Killer Bee 051 already bid to over $300 with 8hrs to go and a .15 Mark II at over $500 with two days to go.
I guess we really lucked out when we got our Killer Bee 049 for $150
I guess we really lucked out when we got our Killer Bee 049 for $150
Re: Yet another Killer Bee clone by Estes?
http://www.ebay.com/itm/371374491723?_trksid=p2060778.m1431.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Ebay handle - Rureelybob
KB .051 $305 now 7hrs and 43 mins to go.
Item location:
Roscoe, Illinois, United States
Ships to:
Worldwide
Is that your US seller?
Ebay handle - Rureelybob
KB .051 $305 now 7hrs and 43 mins to go.
Item location:
Roscoe, Illinois, United States
Ships to:
Worldwide
Is that your US seller?
1/2A Nut- Top Poster
- Posts : 3468
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Yet another Killer Bee clone by Estes?
I have bought quite a few engines from Bob in the past he always has some top notch clean engines. Can highly recommend!!
Last one was just a while back a (New In Box Magnum XLS .15A R/C) $42.00 woot!
Last one was just a while back a (New In Box Magnum XLS .15A R/C) $42.00 woot!
1/2A Nut- Top Poster
- Posts : 3468
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Yet another Killer Bee clone by Estes?
Yes my self also , he has some nice stuff ever thing he sells is cleaned and oiled , very nice !!
getback- Top Poster
-
Posts : 10376
Join date : 2013-01-18
Age : 67
Location : julian , NC
Killer Bee piston wall thickness?
I see the mod to reduce the piston weight. Question, what is the wall thickness of the Killer Bee piston?
Best, DennisT
Best, DennisT
stuntguy13- New Member
- Posts : 3
Join date : 2018-09-02
Age : 77
Location : Palm Beach County, Florida
Re: Yet another Killer Bee clone by Estes?
Here is some old info and thread that may be of help to you https://www.coxengineforum.com/t4279-lightening-a-piston-using-common-tools?highlight=killer+bee+piston
getback- Top Poster
-
Posts : 10376
Join date : 2013-01-18
Age : 67
Location : julian , NC
davidll1984- Diamond Member
- Posts : 2318
Join date : 2020-02-12
Age : 39
Location : shawinigan
Similar topics
» Venom clone
» Killer bee clone/ hobbyking mini stick
» Venom, Killer Bee .049, Killer Bee .051 for sale
» How to clone a Cox Venom
» Estes Blunders
» Killer bee clone/ hobbyking mini stick
» Venom, Killer Bee .049, Killer Bee .051 for sale
» How to clone a Cox Venom
» Estes Blunders
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum