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Old 09-10-2010 | 10:06 AM
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Gordon W's Avatar
Gordon W
 
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Default RE: FOX COMPOSITES Bae HAWK, Build thread

It’s done!!

Much to my surprise, with empty tanks the CG came out spot on what it was with the Stumax. An even bigger surprise is the empty weight .... 12lb 1oz. With 1.2 litres of juice plus what's in the bubble trap, weight will rise by about 2lb 7oz. So it'll take off at around 14.5lb and land at around 12.5lb. Which compares very favourably with 16lb on 11S 5000s and 17lb with 11S 6600s at both launch and land.

Pic 1 shows the new installation.

Pic 2 Shows the bubble trap made from a 4oz Dubro tank and Slec tank fittings. The second 2oz tank is to catch any overflow during filling to avoid spills on the ground.

Pic 3 indicates the space saved by locating the retract tank in the extreme nosecone.

Pic 4 shows one of the two scratch-moulded fuel tanks. Total volume is around 1250cc, which seems about right for a MW44. This is the second tank and has a felt filter.

Pic 5 The turbine location is the standard one for this kit.

Pic 6 shows the wooden jig I made to ensure that the tailpipe is central and the correct distance from the turbine nozzle.

I still have to fly the beast, and if the weather-men have got it right, Sunday could be the day for test flights.
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