please help

mitchg95 Thu Mar 29, 2012 9:03 pm

hi, i have the parkzone radian. It fly's great to say the least Very Happy

but i have noticed that when i get up to altitude and cut the throttle to 0% i have to hold full up elevator to maintain my altitude or i go into a dive. Is this because my plane is nose heavy, other than this the plane is perfect, and would make a perfect trainer for anyone thinking of getting into the hobby. The only other flaw that i noticed is that after 2 flights today the prop and spinner came of the plane when i went to hit the throttle to go back to altitude, i fixed this my using medium thread lock on the threads that old the prop hub on
thanks MitchG95

nitroairplane Thu Mar 29, 2012 9:38 pm

mitchg95 wrote:hi, i have the parkzone radian. It fly's great to say the least but i have noticed that when i get up to altitude and cut the throttle to 0% i have to hold full up elevator to maintain my altitude or i go into a dive. Is this because my plane is nose heavy, other than this the plane is perfect, and would make a perfect trainer for anyone thinking of getting into the hobby. The only other flaw that i noticed is that after 2 flights today the prop and spinner came of the plane when i went to hit the throttle to go back to altitude, i fixed this my using medium thread lock on the threads that old the prop hub on
thanks MitchG95

I doubt it, planes usually dive when the engine is cut, use this glide to build up speed for a nice glide.

Jason_WI Thu Mar 29, 2012 9:43 pm

A Sig Kadet Senior has a nice glide. Have you checked the balance?

Jason

WingingIt74 Thu Mar 29, 2012 9:45 pm

It's because you don't have it in trim. Play with it on the ground by tossing it like a chuck glider then you'll find out what the elevator should be like. Also check your CG first.

Here is the one I use to have, Jeremy has it now
http://www.horizonrcflyers.com/forums/showthread.php?t=1460

Scout Pack Demo...

mitchg95 Thu Mar 29, 2012 10:06 pm

nitroairplane wrote:
mitchg95 wrote:hi, i have the parkzone radian. It fly's great to say the least but i have noticed that when i get up to altitude and cut the throttle to 0% i have to hold full up elevator to maintain my altitude or i go into a dive. Is this because my plane is nose heavy, other than this the plane is perfect, and would make a perfect trainer for anyone thinking of getting into the hobby. The only other flaw that i noticed is that after 2 flights today the prop and spinner came of the plane when i went to hit the throttle to go back to altitude, i fixed this my using medium thread lock on the threads that old the prop hub on
thanks MitchG95
I doubt it, planes usually dive when the engine is cut, use this glide to build up speed for a nice glide.

its not a very steep dive, just enough to notice when the engine is cut

mitchg95 Thu Mar 29, 2012 10:08 pm

Jason_WI wrote:A Sig Kadet Senior has a nice glide. Have you checked the balance?

Jason

were can i find the cg on this model, i checked were i thought it would be, in the holes in the wing that allow you to view the carbon fiber wing tube joiner. I dont know if this is the correct place to check, but she flies fine right from the get go

mitchg95 Thu Mar 29, 2012 10:09 pm

WingingIt74 wrote:It's because you don't have it in trim. Play with it on the ground by tossing it like a chuck glider then you'll find out what the elevator should be like. Also check your CG first.

Here is the one I use to have, Jeremy has it now
http://www.horizonrcflyers.com/forums/showthread.php?t=1460

Scout Pack Demo...

thanks for that video Wingingit74, ill try to throw it like a chuck glider tomorrow, it seems fine though (elevator is at dead center of what it should be and has equal throw in both directions)

WingingIt74 Thu Mar 29, 2012 10:25 pm

If I remember mine was always up a bit.

mitchg95 Thu Mar 29, 2012 10:27 pm

WingingIt74 wrote:If I remember mine was always up a bit.

the elevator? i thinks that what you mean, sorry im just real tired as i stayed up till 3am last night. so excuse me if i get weird and confused.
im going to try to fly it all day tomorrow Very Happy

Mark Boesen Thu Mar 29, 2012 11:47 pm

Hello,

It might be a little nose heavy, check the CG appx. 25% back of leading edge, probably where the spar is. It will take a little up to compensate for the loss of thrust when deadstick, but it shouldn't need full up unless its trimmed with down to maintain level flight when powered, then it very well could. With a flat bottom or under cambered wing its going to be a compromise between trimmed powered level flight and trimmed dead stick glide.

SuperDave Fri Mar 30, 2012 9:00 am

An incidence meter is a helpful tool to align flight surfaces prior to trim adjustments from the Tx.

I have a Great Planes Accu-point laser meter and always use it before flying new plane for the first time. Correctly aligned, my planes require very little trim adjstment.

mitchg95 Fri Mar 30, 2012 10:36 am

Mark Boesen wrote:Hello,

It might be a little nose heavy, check the CG appx. 25% back of leading edge, probably where the spar is. It will take a little up to compensate for the loss of thrust when deadstick, but it shouldn't need full up unless its trimmed with down to maintain level flight when powered, then it very well could. With a flat bottom or under cambered wing its going to be a compromise between trimmed powered level flight and trimmed dead stick glide.

Cool thanks Mark for telling were the cg should be, Ill check it later before i go fly. Thanks guys for all the support

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