i have this low wing n it bloody tail heavy.. i put about 4 ounces of lead and it still tilts back.. the nose wheel is not in contact to the ground.. its that bad even with the engine on!

Rahgfrost,
Yikes!, I'm sure you have moved everything you can to the frontmost of the plane, so keep adding weight until it balances corectly,or you will have toothpicks if you try to fly. I have built planes powered with regular plain bearing .40's that weighed over 6.5 lbs. It depends on the wing loading. If you stay under 22 oz. per square foot, it will fly fine. It may use some runway to take off though.

Jetts

Try to have your nose weight as far foreward as possible. Screw some lead to the front of your engine mount. Also make sure your engine is as far fore ward on your mount as possible. I think you will be fine. Our planes are usually over powered as is, but as jettstar said - don't fly it until the balance is right.

thanks guys.. i guess i gotta get more lead

Before placing more lead, go an get a spinner weight from the LHS. This is a one or two ounce weight that fits on the front of the prop like a spinner. This is the farthest forward you can place such a weight, and the farther forward you can get it, the less you will have to use. As a matter of fact. I have one that I will never use. Give me your address and I will send it to you, gratis.

If theres no cowl buy a long series engine mount and move the engine forward, also as some one else said bolt the lead onder the engine as far forward as possible

These guys are right about the prop nut, By chance this would not be a slow poke you trying to set up would it, My brother has one and it needed almost a pound of lead on that one but on that plane great planes replied "To make it so you won't need nose weight they would have to compleatly change the plane and it would take away from the looks so they had no plans on changing it" Even with the pound strapped to the front a 46FX pulled it right up out of a prop hang.

Dauntae

Just a thought here since you did not indicate any particular design or possibly is it a conversion from coventional gear to tri gear, perhaps a 'bash' of several differant major componets?

The reason I ask is you only seem to indicate the tail heavy condition by the landing gear tilting. Any conventional airplane needs to balance from about 25% to 30% back from the leading edge. In other words about a quarter the way back from the leading edge on a straight cord wing. If the any of the above has taken place then perhaps your main gear is to far back. A good rule of thumb is to always balance the aircraft in the above percentages of the wing cord and then consider the landing gear position for good flight and ground handleing chacteristics.

If this is not the case then please forgive me.

John

correction to the above paragraph, should read 'then perhaps your main gear is to far forward'

i was actuall thinking of removing some of the wood from the tail section, do u think its a gd idea to do so. coz this plane is built very tail heavy & its fr vietnam

adding lead would be the last thing i would do. Make sure you have your CG as described on directions and make sure you balance it out from near the fuselage and not on wing tips.

try moving your battery up as far as ya can to nose and any other gear to the nose as possible. Also make sure you are balancing with an empty fuel tank.

Adding lead may make the plane balance correctly but it should be the last thing you do. You can always slide your engine to the most forward position on the engine mount. Move the engine as far as it will go and see if that works also.

Try to see if any of these ideas work out for you before adding weight.

You could also use a solid spinner, your LHS should be able to get one macjined from aluminium bar stock

If you go the weighted spinner route, use a Harry Higley heavy hub, looks like a constant speed prop hub (sorta), and is made of machined brass. It weighs a full two oz.
Just a thought.


Jetts

The Higley hub is good. I have one and it turns true and is helpful in tail-heavy situations.

If you move the engine, then you will be changing the moments of the aircraft too. A model is designed to have the propeller at a certain location. Most guys don't realize that moving the engine changes the flight qualities of a model. The model will fly, but not as designed.

To answer your question in a concrete way, I think a .46 could fly a 12+ pound model if you had a long enough runway and it was lightly loaded (lots of wing).

How about putting a metal motor mount on it would add strength
would be cheaper than a new spinner or motor
you can also change the firewall make one out of 3/4" plywood(~ 2cm.)that would also add strength plus weight.
make shore your battery pack is in front of your rec. in front of cg.

i will give it a shot this weekend.. and see how much this bird will weigh

thanks for ur advise ya all

Hello, Please do tell us how/where you measured your CG. As John Buckner and Flooredcobra pointed out, landing gear placement is not the test....Have you actually checked CG at the wing chord??? or just sat the plane on its gear? ....just a thought to save work and embarrassment!

hehe u were right i just placed on its gears n it leaned back.. i am gonna go to the hobby shop this weekend n get some lead n do it the proper way, i guess

Your trying to balance it on the LG????? thats a new one for the books. didnt you read the instructions/plans??

Make sure you balance it all put together and with fuel tank empty. measure from front of wing to where it says, then out your fingers there and see if it holds a balance.

See what your directions say on how many inches back you need to balance from. I would do that before adding lead to it. Usually they are very close to balance from the start.

Sounds like you need to move the landing gear back.....

That plane sounds like it is heading for disaster

This link will help you out http://www.rcuniverse.com/reviews.ph...ew&reviewid=84

Dauntae

thanks i have already read it. i think i am gonna scrap this plane..

How about putting a picture of your plane here, so the others will be able to give you better idea of how or where to make the adjustment?

hang on i will take a pic of my plane on my dicam

this is how it looks