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Magnum with no throttle servo

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Magnum with no throttle servo

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Old 06-25-2003, 01:44 AM
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Mattyb
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Default Magnum with no throttle servo

is anyone flying the magnum without throttle servo to save weight. just wondering as i noticed that on the 50v1 the throttle is held open by spring. and the idea is to go flat out anyway so who needs it ??????


Mattyb
Old 06-25-2003, 03:53 AM
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Crazy4Flight
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Default Magnum with no throttle servo

specs on hitek HS-81:

Motor Type 3 Pole Ferrite
Bearing Type None
Torque 4.8/6.0v 36 / 42 oz. 2.6 / 3.0 kg.
Speed 4.8/6.0v 0.11 / 0.09 second
Size 1.2 x 0.5 x 1.2" 30 x 12 x 30 mm
Weight Nylon 0.58 oz. 16.6 g.

have you ever handlaunched one of these ???
have you considered the possibility that you may have flutter, lose a control surface in flight, servo failure, midair collision.????

would you now like to throttle back instead of going in full bore?

at 3.5 lbs the micro servo will increase your weight by about 1%

the pylon racers running venturi instead of a carb sill have a way of killing the engine...part of the rules.


if you want to make your magnum faster clean up the airframe...
all the blunt trailing edges on the tail are drag city
Old 06-25-2003, 04:12 PM
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Cactus.
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Default Magnum with no throttle servo

i run a GRRT, no throttle, i now have a cut, but i didnt before, talk about praying nothing goes wrong.......
Old 06-25-2003, 11:20 PM
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Mattyb
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Default Magnum with no throttle servo

i see your point. after starting it the other night i would not like to have no throttle. barely hang onto it
Old 06-25-2003, 11:22 PM
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jwoolridge
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Default Magnum with no throttle servo

How do engines with a venturi kill the throttle in an emergency.
James
Old 06-26-2003, 12:18 AM
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Default Magnum with no throttle servo

I used to use a fuel line pinch in the past...

Nelson engines have a venturi, but it looks like a carb... you can close the barrel to stop the engine...
Old 06-26-2003, 07:29 PM
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Cactus.
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Default Magnum with no throttle servo

you start a turn rich, it runs like a bag of $*** till you get to the patch, lean it out and throw. i now have a little hook round some tube and it pulls it tight against the fire wall to cut, i've not tried it yet, waiting for a pipe, but i may even be able to sort out a rich setting in air by pinching it slightly

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