Search: Posts Made By: mnowell129
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Forum: AutoGyros
02-27-2009, 10:55 AM
Replies: 2
Views: 1,517
Posted By mnowell129

RE: Gyro with a Heli Head?

It's quite possible:
http://www.rcuniverse.com/forum/m_2325673/tm.htm
www.mickeynowell.com

You will generally need much bigger blades than the heli had.
For example on mine the original...
Forum: AutoGyros
07-21-2008, 06:57 PM
Replies: 6
Views: 3,017
Posted By mnowell129

RE: 4 Bladed Teeter Head

Someone already did this, but I can't find the link. Four bladed teetering is really hard to to
because the two blade systems have to interlock but not touch each other.
It doesn't really have...
Forum: AutoGyros
06-11-2008, 03:56 PM
Replies: 21
Views: 4,869
Posted By mnowell129

RE: Robbe Whopper

All accounts of the whopper was that it was fast, heavy, and needed a lot of power to even fly.
My vote would be to make a nice display out of it and buy something that's being manufactured
...
Forum: AutoGyros
06-06-2008, 09:12 AM
Replies: 21
Views: 5,418
Posted By mnowell129

RE: "Dihedral" or preset coning effects on rotor

You're welcome.


This is the critical knowledge, once you get this, things make sense.



This is true in theory, but the rotor response to this takes a long time, longer than a human...
Forum: AutoGyros
06-06-2008, 06:56 AM
Replies: 21
Views: 5,418
Posted By mnowell129

RE: "Dihedral" or preset coning effects on rotor

He didn't. We hashed this to death on RCGroups. Coning has no advantages. It doesn't provide yaw/roll coupling, nor does it
create any stability laterally or longitudinally.


This is all...
Forum: AutoGyros
05-16-2008, 09:51 AM
Replies: 2
Views: 2,470
Posted By mnowell129

RE: Ultra Micro Gyrocopters on You Tube

Umm... Where have you been?

There are already many clones of this flying.
all kinds of discussion, sources for radios, foam here:
http://www.rcgroups.com/forums/showthread.php?t=781538
Forum: AutoGyros
05-15-2008, 04:32 PM
Replies: 16
Views: 2,587
Posted By mnowell129

RE: Roll T/O question

I've had pre-rotators on my kits for years now.
100% reliable takeoffs, 10 to 20 feet with no hassle,
max performance takeoff in 5 feet. Crosswinds or no wind
not a problem. You can taxi out...
Forum: AutoGyros
04-08-2008, 08:29 PM
Replies: 1
Views: 1,047
Posted By mnowell129

RE: Gyros for airplanes

Try posting this question in the 3D airplane forum.
This forum is for gyrocopters not gyroscopes.
Forum: AutoGyros
03-17-2008, 08:53 PM
Replies: 7
Views: 2,031
Posted By mnowell129

RE: LakeLand Autogyros

Yea it got cold this weekend, I think it got down in the 50's.. Brrr...
Forum: AutoGyros
03-17-2008, 05:22 AM
Replies: 7
Views: 2,031
Posted By mnowell129

RE: LakeLand Autogyros

Thanks to all. I had a good time.
Thanks again Jim for arranging the event, we had plenty of time to fly.
Phil's new creation really flies well.
Jim did his duty by getting many models trimmed...
Forum: AutoGyros
12-10-2007, 09:33 PM
Replies: 29
Views: 5,920
Posted By mnowell129

Forum: AutoGyros
12-07-2007, 09:02 AM
Replies: 11
Views: 3,078
Posted By mnowell129

RE: Wind Tunnel Tests of Autogyro Rotors Article

Nice report. One consideration is the size of the model.
Mine are smallish and the Re varies from about 50000 to 150000 root to tip, with
the 2/3 radius Re being about 100K, depending on RPM.
...
Forum: AutoGyros
11-28-2007, 07:51 PM
Replies: 11
Views: 3,078
Posted By mnowell129

RE: Wind Tunnel Tests of Autogyro Rotors Article

I think I have hardcopy of the article. I think I also have a hardcopy of the actual
windtunnel data as well.
I'm an engineer as well, so I might be able to poke around and find a quick answer
...
Forum: AutoGyros
11-05-2007, 09:11 AM
Replies: 2
Views: 1,583
Posted By mnowell129

RE: Rule of Thumb for Gyro Electrics?

Bill,
I think your numbers are a little aggressive. You can do pretty good 3D flying
on 100 watts/pound. 50 watts/pound works for sport flying. I have a cub that
flies scale like, including...
Forum: AutoGyros
07-22-2007, 11:51 AM
Replies: 5
Views: 1,452
Posted By mnowell129

RE: G3PO and BEGI parts questions

If it works then there is no reason not to use it. I don't know if it's long enough
when you fit the pre-rotator. If you are using it in that case let me know.
Basically any 3mm shaft with the...
Forum: AutoGyros
07-21-2007, 03:29 PM
Replies: 5
Views: 1,452
Posted By mnowell129

RE: G3PO and BEGI parts questions

I don't think it's long enough.
Besides you have to cut the gear off.
Forum: AutoGyros
07-21-2007, 11:43 AM
Replies: 5
Views: 1,452
Posted By mnowell129

RE: G3PO and BEGI parts questions

For main shaft I use these:
http://www.bphobbies.com/view.asp?id=V019752&pid=NESKV029
You have to trim a few mm off the end so if will slide in far enough
to have the hole line up.
For a...
Forum: AutoGyros
06-14-2007, 10:41 AM
Replies: 16
Views: 2,346
Posted By mnowell129

RE: Kellett to Pitcairn

Thats very cool Jim.
I'll have to drive down and see it fly sometimes.
Forum: AutoGyros
05-15-2007, 02:49 PM
Replies: 8
Views: 4,404
Posted By mnowell129

RE: Now flying successfully with a teetering head

Congratulations.
How much blade weighting is used?
Are they CG corrected?
mickey
Forum: AutoGyros
04-30-2007, 10:10 PM
Replies: 1
Views: 1,186
Posted By mnowell129

RE: AutoGyro's at SEFF

I know I had a good time. I was really impressed with Jim ripping GT17 around in that wind.
Hippo had a rotorshape also, he was kind enough to let me make a flight (at dark!).
Hippo's new design...
Forum: AutoGyros
04-22-2007, 06:20 PM
Replies: 4
Views: 2,245
Posted By mnowell129

RE: New AutoGyro

Hacker A20-20L
20 amp speed control
3s lipo 2100's or 2070's
Forum: AutoGyros
04-22-2007, 12:51 PM
Replies: 2
Views: 3,020
Posted By mnowell129

RE: Large Scale Helicopters-25Kg Payload

Yamaha RMAX is about the only game in town.
http://www.yamaha-motor.co.jp/global/industrial/sky/index.html
Forum: AutoGyros
04-19-2007, 03:58 PM
Replies: 37
Views: 10,641
Posted By mnowell129

RE: Prerotator devices

Here's my pre-rotator wiring diagram in anyone is interested.
Might save some headscratching if you are experimenting.
see you at SEFF
mickey
Forum: AutoGyros
04-17-2007, 08:38 PM
Replies: 37
Views: 10,641
Posted By mnowell129

RE: Prerotator devices

Thanks. I knew there were others, like the Pegasus, just couldn't recall in the heat of the moment.
I was just trying to make the point that the need for pre-rotation wasn't simply my idea but
...
Forum: AutoGyros
04-17-2007, 11:31 AM
Replies: 37
Views: 10,641
Posted By mnowell129

RE: Prerotator devices

You will. Work in progress.
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