RE: Rotor head ideas
Hi Harvey, There usually is no need to include flapping hinges in a coaxial system. You do not want flapping here. The blades should be built lightly, so they do not cause unwanted buildup of forces which could shatter them. The Super Libelle coaxial gyro had lead-lag hinges, but no flappers. Many users of this system don't have any hinging whatsoever, simply rigid rotors. I still might go this route, as it is simple and effective. I could fly a wingless gyro with rudder, elevator, and throttle. Thanx !!! Charlie
Posted on: 1/15/2009 6:44 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=8362333

RE: Who Has A Synchrogyro ???
OK, Thanx for the straight scoop !!! I also had the MB plan for the Synchrogyro, but I think loaned them 15 years ago and never got them back......I still remember a lot about the design.....how unique it was.......2-channel !!! WOW !!! Charlie Anderson
Posted on: 1/9/2009 11:11 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=8340481

RE: Who Has A Synchrogyro ???
Hi Andy, I spoke with you on the RCU AutoGyro Forum a while back. Did you ever receive the plans for the Synchrogyro ?? I was wondering if you have built and flown one yet. Please send any specifications/pix of this design, as I can't seem to find a picture of it anywhere. Thanx for your help !!! Charlie Anderson ottogiro58@aol.com
Posted on: 1/9/2009 9:33 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=8340103

Whistler Videos
Hi Gang, If anyone has video footage of the Whistler in flight, please post them in this thread. Whistler pictures are welcome, too !!! Thanx !!! Charlie Anderson
Posted on: 1/6/2009 4:47 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=8326442

Can the PT Gyros Be Steered With Rudder Only ??
Hi Gang, Are there any PT Gyro scientist/pilots (all PT models) who would like to try a simple experiment ?? Adjust your radio gear so the rudder and elevator (rotor pitch) are on the same stick, and see if it can be flown as a 3-channel trainer airplane would be handled..... Some up-elevator might be needed while turning.....You could still leave the roll control on the left stick with the throttle, in case you need to bail out and recover using roll........ Who knows, a 3-channel autogyro might make the ideal training aircraft !!! C'mon guys, this is an easy experiment and could lead to simplification of this design. Less cost, less weight, less construction. Thanx !!! Charlie Anderson [8D]
Posted on: 1/5/2009 11:11 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=8323765

RE: WIN A FREE Scale Fuselage from V-East & Graupner Helis
Hi Gang, Now that's an offer too good to pass by !!! Please enter my name to the heli contest. Thanx !!! Charlie Anderson
Posted on: 12/22/2008 9:55 AM by Author "ottogiro58" in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8270560

RE: Who Has A Synchrogyro ???
Hi Andy, Yep, it dates from 1978, I believe. What worked back then, will work better now. Single-rotor updated version is warranted. It was claimed that the lightweight model would gently float down w/power off. I like that !!! Charlie Anderson
Posted on: 9/26/2008 4:26 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7993562

Who Has A Synchrogyro ???
Hi Gang, Does anyone out there know of a currently flying Synchrogyro 2-channel gas-powered autogyro model ?? Please share all of your Synchrogyro experiences/pix/videos with us. I was wondering if this design would work with one of the modern flex plate rotor heads (designed for a model of similar weight). Elevator control could be easily added if needed (extra arm located on rudder servo arm w/pushrod can be used to activate the elevator, giving "up" input while turning). Thanx !!! Charlie Anderson
Posted on: 9/25/2008 9:37 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7991192

RE: Morris 2008
Hi Jim, Bet everyone is having a ball.....Wish I was there.....What's the weather like ?? Any more news on that 1/2A PT ?? Look it over........I might be interested if he can safely ship it to me (and the price is right !!!) ..... Thanx for the updates.......Happy Flying !!! Charlie Anderson
Posted on: 9/6/2008 1:47 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7926290

RE: Morris 2008
Hi Jim, OK, thanx, see if they also have the plans and paperwork for it .....Charlie
Posted on: 9/6/2008 7:54 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7925433

RE: Morris 2008
Hi Jim, Glad to see the gang out and having fun......thanx for the update and pix !!! Is anyone selling a 1/2A PT Gyro ?? Charlie Anderson
Posted on: 9/6/2008 7:49 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7925421

RE: New XPG Autogyro Maiden Flight Report
Hi Gary, Seems like I saw some pix of the XPG with a nose fairing, on the FoamFly website.....any more news on this model, modifications, or videos of prerotation in action ?? How thick is the rotor flex plate ?? Is it polypropylene ? Thanx, Charlie Anderson
Posted on: 9/2/2008 1:02 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7910603

RE: 1/2A PT Gyro Information
Hi Gang, I tried to access the PT Gyro web page, looking for 1/2A PT Gyro information, but it will not work for me. Anyone else have the same problem ?? Thanx !!! Charlie
Posted on: 9/1/2008 9:39 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7909842

1/2A PT Gyro Information
Hi Gang, Does anyone have a 1/2A PT Gyro, and do you still fly it ?? I need some basic specs like rotor diameter, blade size and weight, flex plate thickness (polypropylene ? ), all-up flying weight, motor/prop combos, modifications, etc. I was thinking about scratch-building a .074 powered 1/2 A gyro. Thunder Tiger .074 power. Thanx for your help !!! Charlie Anderson PS Any videos of it would be great !!!
Posted on: 8/30/2008 10:45 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7903584

RE: 1/2A Throttle Controlled C/L Autogyro
Hi Mike, OK, thanx for the links......I'll take a look !!! Charlie
Posted on: 8/25/2008 11:02 AM by Author "ottogiro58" in the forum "Control Lines"
http://www.rcuniverse.com/forum/fb.asp?m=7883483

RE: 1/2A Throttle Controlled C/L Autogyro
Hi Mike, I appreciate the information very much. One more thing.....have you seen in person anyone using an infrared throttle system for C/L, or have links to information regarding IR systems ??? IR could have its virtues.............Thanx again !!! Charlie Anderson
Posted on: 8/23/2008 10:55 AM by Author "ottogiro58" in the forum "Control Lines"
http://www.rcuniverse.com/forum/fb.asp?m=7876765

RE: 1/2A Throttle Controlled C/L Autogyro
Hi Mike, OK, I get the throttle setup and operation now...........thanks for the detailed information. By the way, I saw your older posts concerning electric carrier C/L ...........a throttle controlled electric might do the trick for me !!! Are any of the electric throttles now located in the handle, with a trigger or similar ?? Or are the signals now being sent down the line ?? IR controls ?? It would be great to have all controls located in the ukie handle. Please clue me in on the latest electric technology when you get a chance......Thanx, Charlie
Posted on: 8/23/2008 6:16 AM by Author "ottogiro58" in the forum "Control Lines"
http://www.rcuniverse.com/forum/fb.asp?m=7876336

RE: 1/2A Throttle Controlled C/L Autogyro
OK, sounds great, Mike..........thanx for the info. If Cox had continued producing the TD, I might still be using it !!! I also flew an "Otto", with OS FSR .10 ........way too much motor without a throttle control !!! I even have a VCR video of one of my Otto clones wobbling around, crashes included. Gyro success depends on careful rotor design. The 2-bladed Bensen-style teeter head is simple to construct, and provides the necessary stability. My Otto flew, but was prone to shaking, dipping, diving, and rolling............that pesky FSR had a mind of its own........... my most successful gyro was based on Roy L. Clough's July 1962 Popular Mechanix design. I tamed the TD .051 using a one-way check valve to control flooding, along with a stunt-vented film cannister fuel tank. Profile design was easy to modify. Looking forward to more pix/info.....Thanx !!! Charlie Anderson
Posted on: 8/21/2008 11:05 PM by Author "ottogiro58" in the forum "Control Lines"
http://www.rcuniverse.com/forum/fb.asp?m=7872359

RE: Direct drive electric prerotator for Autogyros
Hi Jim, I am referring to a direct drive system, where the outrunner/other electric motor is the rotor bearing and prerotator all in one . The idea is to simplify construction, and eliminate any clutch or gear mechanism.....Charlie Anderson
Posted on: 8/21/2008 9:58 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7866986

Direct drive "outrunner" electric prerotator for Autogyros
Hi Gang, Has anyone actually tried using an outrunner or other type electric motor as a rotor bearing/direct-drive prerotator ?? I would like to hear the results of your experiments.....suggestions have been made in RC Groups Auto Gyro forum. This could be a great item for many autogyros...... Thanx for sharing your results !!! Charlie Anderson
Posted on: 8/21/2008 9:57 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7866826

1/2A Throttle Controlled C/L Autogyro
Hi Gang, Does anyone fly a control-line 1/2A (.074 Thunder Tiger or similar) airplane with 3-line throttle control ?? I have a new TT .074 laying around, and want to build an autogyro with throttle. I have flown Cox .049 gyros successfully for many years, but always wanted a throttle so I could "hang on the prop" and fly slowly, like the carrier guys. Guess I need a special ukie handle. Gyrocopters have their own charms, and challenges, too !!! I'm looking to adapt any successful .074 throttled design...... gyros are a bit "draggy" and need just a bit more power than the Cox could produce. Will the 3-line system work well with a slow, lightweight model ?? Any input, plans or help would be appreciated.....Thanx !!! Charlie Anderson
Posted on: 8/21/2008 9:17 PM by Author "ottogiro58" in the forum "Control Lines"
http://www.rcuniverse.com/forum/fb.asp?m=7871870

RE: Rotor head ideas
Hi John, Twin contra-rotating coaxial rotors do not need teetering for stability. Stability is acheived through contra-rotation. Build twin rotors with preset coning angles, use reasonable vertical fin and rudder, and it should turn easily with rudder-only steering. Keep the rotors light for EZ spinup and to prevent unwanted forces building up in the sys tem. Be sure that thrust line goes through or near vertical CG. Look on You Tube under Contratwirl for a video of a twin 4-bladed coaxial rotor autogyro. Flys great on 3-channel (rudder, elevator, throttle). Hope this info helps. Charlie
Posted on: 8/15/2008 9:29 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7850596

RE: 4 Bladed Teeter Head
Hi Mike, Thanx for posting the cool photos and link. Very clever design. Hope he has good success with his beautiful bird..............Charlie Anderson
Posted on: 8/11/2008 7:25 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7832463

RE: 4 Bladed Teeter Head
Hi Emilio, Thanx for the pix of the 4-blade teeter-head gyros. Seemed like a reasonable idea...............glad someone has proven it out........ Charlie Anderson
Posted on: 8/4/2008 4:48 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7808001

RE: 5 n 1 on my DAG-1 Autogyro
Hi Dave, Thanx for posting the cool videos..........lots of fun to watch............... Charlie Anderson
Posted on: 7/31/2008 4:48 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7793694

RE: 4 Bladed Teeter Head
Somebody...........anybody ????? Your input would be appreciated. Thanx !!! Charlie Anderson
Posted on: 7/21/2008 11:42 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7754859

4 Bladed Teeter Head
Hi Gang, Any thoughts or evidence of a four blade teeter head being used ?? Picture a gyro with a Bensen teeter head, as if the two blades were in line with the fuselage. But instead of two blades inline, four blades are installed like an "X" atop the fuselage (considering a special mount would have to be made). Teeter hinge line would bisect blade chord lines. Has anyone experimented with this design head ?? Any thoughts on its feasibility ?? More blade area, and might ? result in a smoother operating head. Thanx for your input. Charlie Anderson
Posted on: 7/12/2008 6:05 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7723396

RE: Twin rotor Gyro idea
Hello, I believe something similar to this arrangement has been tried by billf (Dr. Bill Friedlander) and can be seen on a video posted on this forum (and You Tube) previously. I think it was You Tube-Spring Hill 2007 Part 4. It did fly, but I am not sure if any further development was accomplished. Might be a heavy servo load to deal with, unless a type of offset gimbal mount is used. Charlie A.
Posted on: 7/2/2008 10:20 AM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7685440

RE: "Dihedral" or preset coning effects on rotor
Hi Gang, Looks like the new micro foamie 2-blader gyrocopters demonstrate the effectiveness of the use of coning..... boy, do they cone a lot !!! Charlie Anderson
Posted on: 5/27/2008 9:48 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7548933

RE: Ultra Micro Gyrocopters on You Tube
Thanx Mickey, for the link and update. I have been following the hobby, but not doing much building right now. Hope you are having fun with your fleet of gyros.... Charlie Anderson
Posted on: 5/17/2008 1:55 PM by Author "ottogiro58" in the forum "AutoGyros"
http://www.rcuniverse.com/forum/fb.asp?m=7507290