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Old 04-22-2010 | 07:59 PM
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steve1mac
 
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From: New Lenox, IL
Default RE: Nitroplanes Skymaster 337, Build Tips

<div style="text-align: center;"><span style="font-size: larger;"><u>Balance</u></span>
</div>After reading some previous threads about balancing this model I found a great space for two 4 or 5 cell batteries. At the front / top of the fuse, just behind the firewall, there is a cavity large enough to hold two 5 cell batteries. I cut a piece of 1/8&rdquo; plywood to fit under the X braces and attached it with 30 min. epoxy, leaving the plane upside down to cure. A small piece of wood, at the front of the cockpit, needs to be removed to access this new space. Batteries wrapped with felt fit perfectly. Save the wood that was removed from the canopy as it can be returned to its place to secure the batteries.
I installed a Sullivan Skywriter and 8oz. smoke fluid tank into the cockpit area to further move the balance forward. And I glued and screwed thin plywood to the back side of the central bulkhead just behind the cockpit to cover the opening and to create a mounting area for my glow driver batteries. I am using two single cell 1.2 volt batteries. One for each 4 stroke engine. Using only one servo for the elevator, and adding 1.5oz. of lead to the front engine mount, this plane&rsquo;s balance is dead on.

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