Flight Trimming

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mrsteven
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Re: Flight Trimming

Postby mrsteven » April 9th, 2011, 9:13 am

Ya, Same with illinois (your state and mine chia) I went at the same time as stevenson and another team and we were all using them with no problem

Edit: now that I googled them lol
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chia
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Re: Flight Trimming

Postby chia » April 9th, 2011, 10:31 am

Hmmm...
2e. Rotor construction: Competitors must construct the rotors themselves. Commercially available rotors or propellers must not be used in whole or part. Rotor thrust bearings may be commercially available items.
I interpreted this as meaning any part of the Ikara prop -hanger included- is not allowed.
So using this
Image
and its corresponding hanger wouldn't be allowed. I know it says bearings can be commercially available, but that just means beads or teflon washers, right?
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Re: Flight Trimming

Postby thewinner » April 9th, 2011, 10:40 am

'Bearing' is defined as 'a device to allow constrained relative movement between two or more parts'. I think the Ikara prop hanger falls under this category.
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Re: Flight Trimming

Postby chia » April 9th, 2011, 10:43 am

Meh, okay then. The one I built with one is still only my backup backup backup copter anyway :lol:
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Re: Flight Trimming

Postby mrsteven » April 9th, 2011, 11:02 am

chia wrote:Meh, okay then. The one I built with one is still only my backup backup backup copter anyway :lol:

lol I have 1 helictoper that works and another that was totalled at regionals.
if it breaks im in some deeeeeeeeep trouble
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Re: Flight Trimming

Postby thewinner » April 9th, 2011, 11:08 am

I have three working helicopters and about 5 destroyed ones. I just take the motorsticks from the broken ones, because that batch of balsa just seemed to be really light... :?
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Re: Flight Trimming

Postby mrsteven » April 9th, 2011, 11:10 am

yeah the lower rotor of my destroyed one is ok so i really have 1.5 helicopters ^.^
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Re: Flight Trimming

Postby lllazar » April 9th, 2011, 5:15 pm

I've built 10+ helis over the course of the year. Got two almost identical (mass distribution is immaculate...) copters right now.
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Re: Flight Trimming

Postby mrsteven » April 9th, 2011, 5:36 pm

That's nuts man! I spend so much time building them I try as hard as I can to avoid building another.
Jw, but how DO you balance it? Like how do u weigh just 1/2 a rotor?
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Re: Flight Trimming

Postby kjhsscioly » April 9th, 2011, 8:16 pm

you don't, just try to balance the center on your finger. Whichever side tips over first, take action to lighten, or if you rotor isn't very heavy, make the other side slightly heavier, but not by much.

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Re: Flight Trimming

Postby illusionist » April 9th, 2011, 8:21 pm

Most of the time, it just takes a tiny drop of glue to balance out the rotors. Put it on the tips of the rotors (lever efficiency and all).
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Re: Flight Trimming

Postby kjhsscioly » April 9th, 2011, 8:25 pm

The issue with that is that you can't predict how heavy the glue is going to be. I like to sand the corners of the heavy side, so I can control what I take off.

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Re: Flight Trimming

Postby mrsteven » April 9th, 2011, 8:33 pm

good idea! but if it only is off enough that a single drop of glue or a little sanding fixes it, then is it really worth fixing at all? what kind of difference does it make time wise?
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Re: Flight Trimming

Postby kjhsscioly » April 9th, 2011, 8:35 pm

I don't know, but in my opinion, weather always amplifies imbalances, so in the event it is humid, or the room is breezy, I like to balance my stuff.

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Re: Flight Trimming

Postby jander14indoor » April 10th, 2011, 6:11 am

chia wrote:Hmmm...
2e. Rotor construction: Competitors must construct the rotors themselves. Commercially available rotors or propellers must not be used in whole or part. Rotor thrust bearings may be commercially available items.
I interpreted this as meaning any part of the Ikara prop -hanger included- is not allowed.
So using this
Image
and its corresponding hanger wouldn't be allowed. I know it says bearings can be commercially available, but that just means beads or teflon washers, right?


Again, not the place for clarifications, blah...
To be clear on my earlier post. The only thing illegal under this years rules is the plastic hub and spars to the left in that picture as they are part of the rotor. The bead, washer, wire, and round plastic dohicky (a complex technical term meaning something I don't know the name of!) to the right is part of the prop hanger and OK as others have mentioned.

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