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Nose Heavy Spitfire

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Old 04-17-2008, 09:05 PM
  #1  
gtrcvry
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Default Nose Heavy Spitfire

Hey guys i have a MK/II Spitfire i installed OS 25AX engine because i wanted speed and manuverbility. I have yet to fly it because it is VERY nose heavy with that 25 on it. What do i need too do to balance it out so it would'nt be so nose heavy? SPECIFICATIONS
Stock Number: GPMA1478
Wingspan Area: 272 in² (17.5 dm²)
Weight: 40-48 oz (1.13-1.36 kg)
Wing Loading: 21-25 oz/ft² (65-78 g/dm²)
Length: 35.5 in (895 mm)
Glow Engine Required: 2-stroke .25 cu in (4 cc)
Electric Motor Requirements: 1450kV out-runner brushless motor 45A brushless ESC 11.1V 3200 mAh LiPo battery
Radio Required: 4-channel radio w/4-5 micro servos
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Old 04-18-2008, 01:12 AM
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alan0899
 
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Default RE: Nose Heavy Spitfire

G'day Mate,
Put some weight in the tail.
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Old 04-18-2008, 07:41 AM
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Edwin
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Default RE: Nose Heavy Spitfire

I would move as much as needed to the tail to balance. Sevos, batteries, receiver whatever. But if you needed more, then you gotta add weight. At least moving equipment keeps the weight about the same. Move only enough to balance.
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Old 04-18-2008, 09:51 AM
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Campy
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Default RE: Nose Heavy Spitfire

1. If the plane has retracts, balance the plane with the retracts RETRACTED. It will be nose heavy when the retracts are down

2. Move the battery as far back as possible - use a HEAVY DUTY servo lead if you need the extra lead length.

3. Use a larger capacity battery. Many people use a 600mah battery, go to a 2,000+ mah battery (heavier battery)

4. If it is still nose heavy you will need to add weight to the tail.
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Old 04-18-2008, 10:00 AM
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jaka
 
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Default RE: Nose Heavy Spitfire

Hi!
Never ever put lead in a airplane if you can avoid it!
Most of the time it's possible to shift the C of G rearward by just moving the servos, receiver and battery...or lighten the engine mount, much plastic could be carved away from that mount in the picture and also changing the spinner to a lighter one. Just use your imagination!
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