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Old Oct 13, 2009, 11:00 PM
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Blenheim, NZ
Joined Dec 2007
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1/2A Tex vintage Chilton build.

Hi, I thought some of you 1/2A guys might be interested in my little Chilton DW1 build log.
http://www.rcgroups.com/forums/showthread.php?t=1079805 this link will take you to my vintage build log.
This is for 1/2A texaco vintage here in New Zealand.

Allan
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Old Oct 14, 2009, 08:28 AM
Übung macht den Meister..
Deuce's Avatar
United States, OR, Fairview
Joined Jul 2006
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That looks nice! Is that "rag" wrapped around the ports used as a muffler? Or is it just to keep stuff out while not being run?

James
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Old Oct 14, 2009, 01:38 PM
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Nice looking project!
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Old Oct 14, 2009, 02:55 PM
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Blenheim, NZ
Joined Dec 2007
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Quote:
Originally Posted by Deuce
That looks nice! Is that "rag" wrapped around the ports used as a muffler? Or is it just to keep stuff out while not being run?

James
I'm sure you know the answer to that! This little BabeBee is amazing. Most of us struggle just to get reliable runs form these little beasts and I know I have struggled with them off and on for 45 years! This one is a real beaut though. It regularly runs 5 minutes 30 secs plus on that smaller standard Cox tank. That may sound a lot but it is done for competition by running a large electric slow fly prop 9 x 4.25 cut down to 8.5 and the fuel has more energy by reducing the oil to 7% and the nitro to 5 % with the rest being methanol. I have fiddled with the head shims too but currently she is unshimmed.
I can't beleive how lucky I have been with this one.
Yes, I definately don't want dirt in it!

Allan
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Old Oct 14, 2009, 07:02 PM
Übung macht den Meister..
Deuce's Avatar
United States, OR, Fairview
Joined Jul 2006
3,000 Posts
Impressive! I admit I have yet to ever time the run of one of my Cox's! Haven't done any competition flying, so that's most of it!

Indeed, keep that one pristine!

James
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Old Oct 14, 2009, 09:59 PM
kill your idols
ZEROSKIN76's Avatar
utica new york
Joined May 2009
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3minutes 34 second average

my babe bees with dual slit newer cyl and no shims will last 3 minutes and 34 seconds on 15 percent or 2 min 15 seconds on 24 percent both are 17 percent all castor lubed i get much less run time out of my old bees with large single slit bee cylinders and have one that will kill that 4cc tank in matter of 45 seconds it is a rc sleeve milled cylinder very large openings = more wasted gas but amazing proformance
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Old Oct 15, 2009, 06:51 PM
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Blenheim, NZ
Joined Dec 2007
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Yes all these little engines seem to run (or not) differently. I think if had to rely on Cox engines as a kid i would have given up. Fortunately we had good supplies of English diesels and then Japanese glow motors for the bigger stuff.
The real trick to get long efficient run is the big broad electric prop which turns at very low speed. The prop is thin and very efficient and the lower rpm seems to drop the fule consumtion rate considerably.
I have run lots of tanks through at 5% oil with no sign of wear at these low speeds. I use cool power 50 / 50 caster synthetic. Burns really clean as you would expect and the motor never gums up.


Allan
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Old Oct 16, 2009, 03:41 AM
Trying To Takeoff
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Novosibirsk, Siberia
Joined Dec 2006
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what brand of electric prop was used?
Thanks
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Old Oct 20, 2009, 05:33 PM
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Blenheim, NZ
Joined Dec 2007
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ASP? APS? slow fly 9 by 4.3 cut down to 8.5 from memory.
Clearly you need to be carefull using an electric prop on IC as they are much lighter in the hub and blade generally. These big ones turn slow though like their electric application and have been fine on my motor.
Allan
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Old Nov 10, 2009, 03:41 PM
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Blenheim, NZ
Joined Dec 2007
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Chilton finished

Some pictures of the finshed DW1 for you all. Now the Babbee is running properly she is flying great but pretty lively around all axiis. 6 minute engine runs.
320 sq ins, 46.75 inch span, just 19.5 ozs ready to fly.
Covered in Solite with hand cut decals in the same film.
Looks very cool in the air.

Allan
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Old Nov 10, 2009, 06:44 PM
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Congratulations! That's a beautiful model airplane.
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Old Nov 15, 2009, 03:35 PM
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Blenheim, NZ
Joined Dec 2007
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There are some flying shots over on the build log if anyone is interested.
http://www.rcgroups.com/forums/showthread.php?t=1079805
Allan
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Old Nov 17, 2009, 03:35 PM
kill your idols
ZEROSKIN76's Avatar
utica new york
Joined May 2009
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by far the nicest airplane ive seen flying on a babe bee

wow this was an amazing build i wish i had your talent
i love those old nostalgic planes
but you really outdid most Ive seen
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Old Nov 18, 2009, 08:14 PM
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Blenheim, NZ
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Cheers Zeroskin, I'm sure you sell yourself short. It is a fairly straight fwd model.

Allan
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