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Building Tips and technical articles. => 1/2 A building. => Topic started by: Bootlegger on November 19, 2020, 04:17:50 PM

Title: ..Golden B runtime...
Post by: Bootlegger on November 19, 2020, 04:17:50 PM
 If memory serves me correctly this engine has an 8cc tank, and on 10-22 power master fuel how long should it  run?  Thanks
Title: Re: ..Golden B runtime...
Post by: 944_Jim on November 19, 2020, 09:10:34 PM
MM,
ISTR getting about 2:10-2:25 on mine just before it declared itself too old to run any more. My 5cc Babe Bees get about 1:45.

My youngest son says the GB took about two pukes, and the BB is one puke. He doesn't fly for that reason, and never liked the noise either. I should have started with electric. Sadly, my last video of him flying is as an 11 yo, in which he is crying by the end of the flight. Talk about a guilt trip! "Fine kid, no more for you...but I'm staying in the hobby," I said.
Title: Re: ..Golden B runtime...
Post by: Bootlegger on November 20, 2020, 09:42:38 AM

  Thanks a lot. Obliged mucho... D>K
Title: Re: ..Golden B runtime...
Post by: 944_Jim on November 20, 2020, 03:59:34 PM
Maybe I remember the Babe Bee time incorrectly. This is on 25% nitro:
https://youtu.be/EhcS78d3nlg
Title: Re: ..Golden B runtime...
Post by: Wayne Collier on November 20, 2020, 05:51:46 PM
On 42’ lines about long enough

On 20’ lines way to long

Never timed one with a clock

 H^^
Title: Re: ..Golden B runtime...
Post by: kenneth cook on November 21, 2020, 08:17:04 AM
          I'm not certain one can accurately answer that question without knowing what you have. Early Golden Bees had a single ported thin walled cylinder. Later variants used dual ported cylinders. The difference in run time just in this factor is almost a minute. In addition, the early tanks used small venturi and small backplate intake holes. This increased run time but seriously had the engine down on power. Using 10% nitro in a older Golden Bee would be substantially down on power.