Rubber
-
- Exalted Member
- Posts: 774
- Joined: Sun Jun 22, 2008 8:12 am
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Rubber
How exactly did you take a lot of weight of the rotor?

2010 NY Helicopter Champ
-
- Member
- Posts: 942
- Joined: Sat Mar 20, 2010 4:13 pm
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 1 time
Re: Rubber
On the free spinning rotor, I have it attached and built similarly to an Ikara Propeller. With a blade attached to each end of a heavy 1/8 square balsa stick, which is attached to the wire. I had the stick that the blades are attached to, run all the way to the end of each blade. I cut the ends of the stick, so the blades are only attached near the center, and most of the blade furthest from the center hangs "free". Was that understandable?
-
- Exalted Member
- Posts: 774
- Joined: Sun Jun 22, 2008 8:12 am
- Division: C
- State: NY
- Has thanked: 0
- Been thanked: 0
Re: Rubber
yes, that can happen sometimes.
Are the blades solid balsa or are they covered?
Are the blades solid balsa or are they covered?

2010 NY Helicopter Champ
-
- Member
- Posts: 942
- Joined: Sat Mar 20, 2010 4:13 pm
- Division: C
- State: MI
- Has thanked: 0
- Been thanked: 1 time
Re: Rubber
They are made like these: http://picasaweb.google.com/jeffrey.hoo ... 7835332994
Except the free spinning ones aren't connected in the same way as in the picture
Except the free spinning ones aren't connected in the same way as in the picture
-
- Member
- Posts: 7
- Joined: Thu Aug 26, 2010 10:16 pm
- Division: C
- Has thanked: 0
- Been thanked: 0
Re: Rubber
i found that my rubber often bunches up in certain areas and causes the whole helicopter to just stop, even
when there are still many winds left.
is this a common problem? are there specific ways to prevent this?....
it may be important to note that i have not been able to get my hands on the competition rubbers yet....i'm just
using one that's already in a band....
when there are still many winds left.
is this a common problem? are there specific ways to prevent this?....
it may be important to note that i have not been able to get my hands on the competition rubbers yet....i'm just
using one that's already in a band....
-
- Member
- Posts: 1602
- Joined: Mon Apr 30, 2007 7:54 am
- Has thanked: 0
- Been thanked: 12 times
Re: Rubber
Several things to prevent bunching.
Make the hook to hook distance longer. Shorter distances encourage bunching. Doesn't need to be longer than relaxed loop, but doesn't need to be shorter either.
Make sure the hooks are spaced away from the motor stick. When stretched between the hooks, the rubber should be separated from the stick by 1/4 inch or so.
Lubricate and stretch wind off the copter to even out the knots. Winding on the helicopter tends to cause bunching.
Competition rubber vs rubber bands won't affect bunching, it will affect energy storage hugely, get some competition rubber if you can.
Jeff Anderson
Livonia, MI
Make the hook to hook distance longer. Shorter distances encourage bunching. Doesn't need to be longer than relaxed loop, but doesn't need to be shorter either.
Make sure the hooks are spaced away from the motor stick. When stretched between the hooks, the rubber should be separated from the stick by 1/4 inch or so.
Lubricate and stretch wind off the copter to even out the knots. Winding on the helicopter tends to cause bunching.
Competition rubber vs rubber bands won't affect bunching, it will affect energy storage hugely, get some competition rubber if you can.
Jeff Anderson
Livonia, MI