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Fuel tank capacity: recommendations please Empty
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Fuel tank capacity: recommendations please

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Post  SuperDave on Fri Jun 22, 2012 10:44 am

I'm trying to select the appropriate fuel capacity size for my control-line Brodak "Baby Ringmaster"/TD .051 but tank listings don't include the physical size AND the fuel capacity.

The Brodak tank (BH-514- 3 oz.) recommended is WAY too large too suit me. I'd like a tank that would give about 3 minutes flight time and still not be too physically large for the space available on the plane.

What fuel capacity would meet my requirements?

Thanks you for any replies.


Last edited by SuperDave on Fri Jun 22, 2012 12:41 pm; edited 1 time in total
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Post  John Goddard on Fri Jun 22, 2012 11:39 am

The Sullivan 1oz on Bernie's site should be directly up your
Alley Dave. Nicely made and good value. Measurements on
The site
I got 9 mins on my 09 Wednesday Evening but that is with
An up and downable throttle.
Very Happy
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Post  andrew on Fri Jun 22, 2012 11:47 am

SuperDave --

There are a couple of tanks that should work for you. The standard tank sizes for the Bee's are 5cc and 8cc; these convert to .17oz and .27oz respectively.

If you take into account starting and tuning, I've found the 5cc tank to be a little small. You probably want 3.5 to 4.5 minutes runtime to keep from getting too dizzy with longer runs, so including startup, tuning and getting to the center of the circle, a 1/4 oz tank will likely be a decent choice.

Brodak has two wedge tanks that should work for you: BH-501 or BH-517 (1/4oz) and BH-502 or BH-518 (3/8oz). With the larger tank, you could always underfill it or let the engine run for a bit before launching. If you think the TD is really going to suck the fuel, the BH-519 is the next size up at 1/2oz.

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Post  SuperDave on Fri Jun 22, 2012 12:07 pm

Andrew:

Good info on Brodak tanks because it's not on the Brodak website.

John Brodak is sending be a free hard catalogue listing the specifics on tanks and other Brodak products. I have corresponded with him and know him to be a fine gentleman dedicated to C/L flying.

I'm thinking a fractional ounce capcity tank that fits in the limited space available aft of the engine. I can always accurately the measure the amount of feul that I load useing a graduated 1/2A fueler that I have from Brodak already.
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Post  andrew on Fri Jun 22, 2012 12:35 pm

SuperDave wrote:Andrew:

Good info on Brodak tanks because it's not on the Brodak website.


Try here: http://brodak.com/fuel/fuel-tank.html

a--
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Post  SuperDave on Fri Jun 22, 2012 12:54 pm

Andrew:

That make no mention of the fractional ounce tanks.
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Post  andrew on Fri Jun 22, 2012 1:47 pm

Dave -

On the upper right side of the page where it displays 12 show per page, click the down arrow and set it to 40. Brodak actually lists 198 fuel tanks. At the top center of the webpage, just above the first images, you will need to select which page you want to view. The first 1/2A tank is about two thirds of the way down page 2.

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Post  SuperDave on Fri Jun 22, 2012 1:52 pm

+1

Thanks Andrew.

Hummmm...... I learned something new from you.
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