Balance question
10-21-2007 | 12:03 PM
#1
Thread Starter
Balance question
A Goon question:
I have a GP Revolver with a .75 ax in it. I flew it and it was pretty schetchy. After flight, on the balance.....i had to add .5 ounce lateral, and 3oz to the tail to get it right. I moved the battery more to lessen the added weight. originally, It was a handfull to fly, snaping out of any hard up elevator, just sketchy everywhere. are those unbalance figures considered alot for a 40 size plane and could be the culprit to the very poor flying, or should i be looking elsewhere on the plane?
Thanks
871
I have a GP Revolver with a .75 ax in it. I flew it and it was pretty schetchy. After flight, on the balance.....i had to add .5 ounce lateral, and 3oz to the tail to get it right. I moved the battery more to lessen the added weight. originally, It was a handfull to fly, snaping out of any hard up elevator, just sketchy everywhere. are those unbalance figures considered alot for a 40 size plane and could be the culprit to the very poor flying, or should i be looking elsewhere on the plane?
Thanks
871
10-21-2007 | 12:35 PM
#2
RE: Balance question
I'm not sure I understand what you did with that weight. But it sounds like you flew the model the first time without checking the balance at all and then added these weights and moved the parts in order to move the balance location to where it is supposed to be according to the instructions. If so then yes, it's quite normal to have to do so. Variations in wood density, engine and radio equipment choices and a host of other variables make it impossible for an ARF maker to ensure that the balance point comes out spot on for you. Setting the balance point is something you need to do with ANY new model.
10-21-2007 | 12:49 PM
#3
Thread Starter
RE: Balance question
ORIGINAL: BMatthews
I'm not sure I understand what you did with that weight. But it sounds like you flew the model the first time without checking the balance at all and then added these weights and moved the parts in order to move the balance location to where it is supposed to be according to the instructions. If so then yes, it's quite normal to have to do so. Variations in wood density, engine and radio equipment choices and a host of other variables make it impossible for an ARF maker to ensure that the balance point comes out spot on for you. Setting the balance point is something you need to do with ANY new model.
I'm not sure I understand what you did with that weight. But it sounds like you flew the model the first time without checking the balance at all and then added these weights and moved the parts in order to move the balance location to where it is supposed to be according to the instructions. If so then yes, it's quite normal to have to do so. Variations in wood density, engine and radio equipment choices and a host of other variables make it impossible for an ARF maker to ensure that the balance point comes out spot on for you. Setting the balance point is something you need to do with ANY new model.
10-21-2007 | 01:09 PM
#4
My Feedback: (1)
RE: Balance question
I have an OS FS-70 powered Revolver and did a kit review for R/C Report magazine. Balanced correctly at 110mm. it is an excellent flying plane.
You did notice the control movements, I hope. Low rate on elevator is only 5/16" each way and high rate is 1/2" each way. This is not very much.
If you use excessive movement, you can easily snap the plane. Bear in mind it is not a 3D plane for doing hard up walls, but more of a sport pattern type plane. If you are used to a very light 3D plane with a thick airfoil, you'll have to learn how to fly this plane, which is heavier and has a thinner airfoil. It does snap fairly fast, but it is controllable. An avalanche is one maneuver where you use a snap and it's easy to do.
The low speed handling is also good, but bear in mind it isn't going to slow to a crawl like a light 3D plane.
You might also want to put in some exponential on the elevator for smoother control input.
You did notice the control movements, I hope. Low rate on elevator is only 5/16" each way and high rate is 1/2" each way. This is not very much.
If you use excessive movement, you can easily snap the plane. Bear in mind it is not a 3D plane for doing hard up walls, but more of a sport pattern type plane. If you are used to a very light 3D plane with a thick airfoil, you'll have to learn how to fly this plane, which is heavier and has a thinner airfoil. It does snap fairly fast, but it is controllable. An avalanche is one maneuver where you use a snap and it's easy to do.
The low speed handling is also good, but bear in mind it isn't going to slow to a crawl like a light 3D plane.
You might also want to put in some exponential on the elevator for smoother control input.
10-21-2007 | 01:26 PM
#5
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From: Tulsa, OK
RE: Balance question
ORIGINAL: show871
Would this amount of unbalance make it fly like a POS on my previous flights? or should I check elsewhere?
Would this amount of unbalance make it fly like a POS on my previous flights? or should I check elsewhere?
10-22-2007 | 03:27 PM
#6
Thread Starter
RE: Balance question
ORIGINAL: Ed_Moorman
I have an OS FS-70 powered Revolver and did a kit review for R/C Report magazine. Balanced correctly at 110mm. it is an excellent flying plane.
You did notice the control movements, I hope. Low rate on elevator is only 5/16" each way and high rate is 1/2" each way. This is not very much.
If you use excessive movement, you can easily snap the plane. Bear in mind it is not a 3D plane for doing hard up walls, but more of a sport pattern type plane. If you are used to a very light 3D plane with a thick airfoil, you'll have to learn how to fly this plane, which is heavier and has a thinner airfoil. It does snap fairly fast, but it is controllable. An avalanche is one maneuver where you use a snap and it's easy to do.
The low speed handling is also good, but bear in mind it isn't going to slow to a crawl like a light 3D plane.
You might also want to put in some exponential on the elevator for smoother control input.
I have an OS FS-70 powered Revolver and did a kit review for R/C Report magazine. Balanced correctly at 110mm. it is an excellent flying plane.
You did notice the control movements, I hope. Low rate on elevator is only 5/16" each way and high rate is 1/2" each way. This is not very much.
If you use excessive movement, you can easily snap the plane. Bear in mind it is not a 3D plane for doing hard up walls, but more of a sport pattern type plane. If you are used to a very light 3D plane with a thick airfoil, you'll have to learn how to fly this plane, which is heavier and has a thinner airfoil. It does snap fairly fast, but it is controllable. An avalanche is one maneuver where you use a snap and it's easy to do.
The low speed handling is also good, but bear in mind it isn't going to slow to a crawl like a light 3D plane.
You might also want to put in some exponential on the elevator for smoother control input.
