Help! Unbalanced Corsair

[short_nathan]

Ok, so I built this Corsair a while ago, and all it needed was the power and radio system, and since lately I've been occupied, I decided that (to please my mom, she loves that corsair, and my Shiny Warbird Syndrome) I really needed to get the thing in the air. The problem is that if I put a 2200 3s lipo in the literal nose, the CG is in the middle of the wing. Has anyone dealt with this kinda stuff?

 

[Houndpup Rc]

Ok, so I built this Corsair a while ago, and all it needed was the power and radio system, and since lately I've been occupied, I decided that (to please my mom, she loves that corsair, and my Shiny Warbird Syndrome) I really needed to get the thing in the air. The problem is that if I put a 2200 3s lipo in the literal nose, the CG is in the middle of the wing. Has anyone dealt with this kinda stuff?

Yup, my Corsair needs a LOT of weight in the nose.....I just piled gas pipe fittings in until it was balanced! 😂 (Make sure you get it nose heavy enough or its going to be very squirrelly)

 

[Mr Man]

Yup, anything will do, steel, lead, copper. Whatever you find that’ll work!

 

[short_nathan]

Yup, my Corsair needs a LOT of weight in the nose.....I just piled gas pipe fittings in until it was balanced! 😂 (Make sure you get it nose heavy enough or its going to be very squirrelly)

Yup, anything will do, steel, lead, copper. Whatever you find that’ll work!

How much weight we talking about?

 

[short_nathan]

Could maybe a new larger battery help too? I already lost most if my 3s packs, so I might want to get a bunch of new ones

 

[Mr Man]

Could maybe a new larger battery help too? I already lost most if my 3s packs, so I might want to get a bunch of new ones

Yup, 👍

 

[Mr Man]

Could maybe a new larger battery help too? I already lost most if my 3s packs, so I might want to get a bunch of new ones

I don’t know, but keep adjusting it till it balances on or slightly in front of cg

 

[Houndpup Rc]

I don’t know, but keep adjusting it till it balances on or slightly in front of cg

Yup

 

[Houndpup Rc]

Could maybe a new larger battery help too? I already lost most if my 3s packs, so I might want to get a bunch of new ones

Or 4s....My Corsair balances fine with a 2200mah 4s on the very front.

 

[Shurik-1960]

When creating a model, you need to constantly monitor the CG, in your case, I would recommend loading the nose with lead, getting 25% CG. Weigh the lead and buy a new engine (more powerful and heavier) and a new battery. Having achieved the desired result. I install all the servomachines in the nose of the model. You can try to lighten the tail section by simply cleaning the surfaces of the elevator, keel and tail section of the fuselage from excess paper and foam.

 

[Piotrsko]

Whatever your nose weight needs are, it helps a ton (joke) to use a weight dense material that's easy to form. Back in the day, you either knew a fisherman or a reloader, or hung around a tire place, but I have done the assorted steel pieces in desperation. Way better to place stuff during the build to minimize nose weight. Shurik-1960 has the best way, but I typically get it all built before I even think about servos and such. My 6 meter glider took 4lbs lead, had to put the radio stuff under the wing in the fuselage

 

[Shurik-1960]

10 years ago, I also used lead weights from tire repair, until I realized that the more excess weight in the model, the more it becomes a flying brick.I'll post photos of the MIG 3 assembly tomorrow. It will fly the same way on 2 different batteries - 1500 mA and 2200 mA.

 

[Merv]

+1 on a larger battery or a 2nd battery.
Might as well get longer flight time out of the extra weight.

 

[quorneng]

my Shiny Warbird Syndrome

I wonder if this has contributed to the need for more nose weight in your Corsair.
Paint is heavy and on a Corsair most of it will be behind the CG.

 

[Bricks]

Not as important as CG balance but left to right is another that I check, closer it is the less aileron trim is needed to correct for this imbalance. Years ago this was standard procedure don`t see it mentioned as much now.

To me the farther forward extra weight that needs to be added means less actual weight, Me personally won`t use a bigger battery to compensate as it sits much farther back then weight that can be added closer to or along side of the motor. The more over all weight the more of a slug and faster the plane becomes.

 

[short_nathan]

I wonder if this has contributed to the need for more nose weight in your Corsair.
Paint is heavy and on a Corsair most of it will be behind the CG.

yes it is

 

[Houndpup Rc]

Like @Shurik-1960 said a bigger motor helps too....If you can afford one...(I used a 3548 in mine and it balanced PERFECT with a 1300mah 😂)

 

[short_nathan]

I'll try a bigger battery first, and then I'll add weights and clay if necessary then

 

[Piotrsko]

I am in the @quorneng camp. Silver covering is heavier than paint and 2/3 of that weight will be aft of the CG. I think it added an ounce requirement to the nose when I last measured it.

I used to be a huge fan of chrome moneycoat for military planes, but a red tailed hawk changed my thinking.

 

[short_nathan]

I just went to my local hobby store and could only find 2600 3s, I hope thats enough.