How much does it matter where on the motor stick the fixed rotor is placed (in the middle/closer to the free rotor, or near the other end with more space between the two rotors)? If that makes sense.
Also, I know I've heard probes are useful, but is a stabilizer necessary?
Also, lllazar's question about the motor stick length.
Designs and Kits
-
chia
- Member
- Posts: 558
- Joined: Tue Jan 13, 2009 5:09 pm
- Division: Grad
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
(avatar is by xamag)
Favorite events: Anatomy, Microbe Mission, Ornithology, Circuit Lab, Helicopter
NCHS '13
==>
Favorite events: Anatomy, Microbe Mission, Ornithology, Circuit Lab, Helicopter
NCHS '13
==>
-
lllazar
- Member
- Posts: 839
- Joined: Thu Nov 19, 2009 7:20 pm
- Division: C
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
A stabilizer is helpful. It adds little weight so its definitely beneficial to have it, as it decreases excess wobble (at least as far as ive seen) which results in better times.
General motor stick length is 12", the only thing that matters is that it is long enough so that the winded rubber doesn't get bunched up.
The positioning of the fixed rotor isn't something i've gone into yet, i have mine about 3/5 of the way up the motor stick...i get decent - above average times so im happy, i suppose i should start experimenting with that though...
General motor stick length is 12", the only thing that matters is that it is long enough so that the winded rubber doesn't get bunched up.
The positioning of the fixed rotor isn't something i've gone into yet, i have mine about 3/5 of the way up the motor stick...i get decent - above average times so im happy, i suppose i should start experimenting with that though...
2011 Season Events~
Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)
Hooray for getting everything i wanted?
Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)
Hooray for getting everything i wanted?
-
blue cobra
- Exalted Member
- Posts: 417
- Joined: Thu Apr 09, 2009 6:10 pm
- Division: Grad
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
What kinds of pitch are people using? If you're building "standard" rotors, with two straight spars crossed and offset vertically, how much vertical offset and horizontal crossing are you using (seems like an easier way to quantify pitch)?
As well, is anyone using dihedral?
As well, is anyone using dihedral?
In full color since 2006
-
aubrey048
- Exalted Member
- Posts: 270
- Joined: Fri Jan 08, 2010 9:43 am
- Division: C
- State: AL
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
Does anyone know of alternatives to winders??? (They're very expensive!) Thanks
Plotting the function of the universe for efficiency without your permission.
Projected 2011-2012 Events: Anatomy, Microbe Mission, Disease Detectives, Tower, Optics, Helicopter.
Past Events: Anatomy (7th), Helicopter (6th), Mission Possible (1st), Write It Do It (4th, 8th), Ornithology (5th).
Projected 2011-2012 Events: Anatomy, Microbe Mission, Disease Detectives, Tower, Optics, Helicopter.
Past Events: Anatomy (7th), Helicopter (6th), Mission Possible (1st), Write It Do It (4th, 8th), Ornithology (5th).
-
lllazar
- Member
- Posts: 839
- Joined: Thu Nov 19, 2009 7:20 pm
- Division: C
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
An electric screw driver? You could use the rpm to time how long it takes to wind it a certain amount of times.
2011 Season Events~
Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)
Hooray for getting everything i wanted?
Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)
Hooray for getting everything i wanted?
-
smartkid222
- Exalted Member
- Posts: 774
- Joined: Sun Jun 22, 2008 8:12 am
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
The most expensive winder (it's yellow) is ~$22 + shipping.
A winder is worth the investment IMO.
A winder is worth the investment IMO.
2008 NY BLG Champ2010 NY Helicopter Champ
-
sriramh
- Member
- Posts: 3
- Joined: Thu Jan 27, 2011 7:23 pm
- Division: C
- State: IL
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
My school just bought the Helicopter 2011 Kit from Freedom Flight Models. Does anyone have any experience with this model? What should I expect from it? Any recommended modifications?
-
eta150
- Member
- Posts: 269
- Joined: Wed Mar 11, 2009 3:48 pm
- Division: Grad
- State: PA
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
Is nice. Just be very careful building the jig, it's the most important part.sriramh wrote:My school just bought the Helicopter 2011 Kit from Freedom Flight Models. Does anyone have any experience with this model? What should I expect from it? Any recommended modifications?
#ACESWILD
-
illusionist
- Member
- Posts: 942
- Joined: Sat Mar 20, 2010 4:13 pm
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 1 time
Re: Designs and Kits
Here is another kit I found online. It's a little large for the year's specifications.
http://www.aeroracers.com/cgi-bin/shopp ... add=action
http://www.aeroracers.com/cgi-bin/shopp ... add=action
-
wlsguy
- Member
- Posts: 366
- Joined: Mon Mar 23, 2009 9:08 am
- Division: Grad
- State: OH
- Has thanked: 0
- Been thanked: 0
Re: Designs and Kits
I think it would still be ok. The rotor diameter is listed as 34cm and the max is 40cm.illusionist wrote:Here is another kit I found online. It's a little large for the year's specifications.
http://www.aeroracers.com/cgi-bin/shopp ... add=action