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HomeAircraftHelicopterAntiques or Out of Business › old teeter head on Revolution 40
09-08-2015 09:24 PM  33 months agoPost 1
tundra flight

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Coldwater Mi U.S.

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Hey guys just a quick question...does anyone know if you put a spring bar on the old style teeter head on a Revolution 40 if it will help stabilize it better like the cricket? this Revolution 40 seems very unstable it was trying to tip on its side before i could even get it off the ground and all is balanced and correct...thing is scary! lol, i fly the cricket fine with the same style head except it has a teeter spring bar and that makes a huge difference but the Rev 40 was not equipped with such a thing, am i doing something wrong? or perhaps there was a modification down the road somewhere? running about +5 of pitch on the blades, perhaps it could be slightly lower idk...but it looks like it really wants to do the 'death roll'

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09-08-2015 11:25 PM  33 months agoPost 2
v22chap

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Granger, Indiana

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Boy it has been a long time since that bird ... but as I remember there was a piece of surgical type tubing on the main shaft that the rotor hub would ride up against to kind of dampen movement . Working to try and find a picture of some type that might show it .

Larry C ----------Bergen R/C helicopters

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09-09-2015 09:22 PM  33 months agoPost 3
tundra flight

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Coldwater Mi U.S.

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that would be cool if you could find that picture...after looking at an old mantis fixed pitch head i had laying around in the storage unit i noticed it had a plastic 'Limiter' plate of sorts inside the head...it would allow the flybar to swing but limited the for and aft movement...I went home and built a plate similar to that for the revolution and it is working very well and so much more stable! i made it out of 1/4 ply and glued it into place in the main shaft hole...i ground out the angle needed to swing and only slightly made the hole bigger than the shaft to allow some for and aft tilt...i think this is going to be the ticket..i will have to take her out in a big field for a good test though.

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09-10-2015 12:58 AM  33 months agoPost 4
v22chap

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Granger, Indiana

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Here is the picture ... this rubber is all dried out and cracked .. but it is what they used

Larry C ----------Bergen R/C helicopters

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09-10-2015 05:27 PM  33 months agoPost 5
tundra flight

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Coldwater Mi U.S.

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ahhhhh ok! hey thank you very much! i will do this to mine...really appreciate it, i have the red Revolution also lol.

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09-29-2015 09:34 PM  33 months agoPost 6
RAK402

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Alhambra, CA

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I remember several people making a clamp which held a piano wire spring for the Revolution (there was a machinist in our group, back in the day, who made a lot of parts for us).

The part clamped around the flybar tube and held the wire spring. It has been far to many years to remember any other detail.

I used to fly the Rev I all the time as my primary machine. The first time I flew a Cricket with the spring to restrict flapping it was a real eye-opener. Much more crisp cyclic control than the stock Revolution or HeliBaby!

John Gorham was an extremely sharp individual.

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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09-29-2015 10:20 PM  33 months agoPost 7
ICUR1-2

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Ottawa, Ontario

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spending time, paying attention

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09-30-2015 11:04 PM  33 months agoPost 8
tundra flight

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Coldwater Mi U.S.

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thanks for that info...i appreciate it much! well i got the old bird flying...but sadly the throttle set screw on the carb loosened up and she was stuck at 3/4 throttle, so i just flew her around in figure eights thinking of what i could do to bring her down soft, well running out of fuel would have been a disaster too since it does not have auto clutch or collective pitch so i had my son video it for about 7 min then i put her down in a relatively soft dirt field on its side...ouch! but the only real damage was a bent main shaft...bent tail rotor shaft...and rotor blades of course, i straightened the flybar out but i will need a new drive belt cause the tail rotor shaft was so bent it could not turn but the engine was still running when i ran over to it and pulled the fuel line off of it. The canopy on suffered one crack about 2 inches long (no biggy) and the boom did not even get bent! all in all a cheap fix for a grand contact with the ground. Yes it turns and flies very well, but that dam throttle! wont happen again...i can assure you, so if anyone knows where i can get a new main shaft that would be ideal, and a new tail rotor belt as well. Thanks everyone.

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10-01-2015 04:44 AM  33 months agoPost 9
RAK402

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Alhambra, CA

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The stock main shafts were originally titanium and contributed to high frequency vibration in the Rev I.

They were also not cheap.

We used to purchase 1/4" drill rod at the local hardware store and make them (this was mild steel, as I recall-not hardened).

It was easy to cut with a Dremel tool, but it could be quite interesting drilling the hole for the 5-40 bolts that retained the head and the main gear.

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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10-01-2015 01:39 PM  33 months agoPost 10
tundra flight

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Coldwater Mi U.S.

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Thanks for the info..gotta do it!

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10-01-2015 02:37 PM  33 months agoPost 11
v22chap

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Granger, Indiana

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Stock Drive products .. probably will have the belt .. I don't remember what the length / width is of the belt .. but I know they have the flat belts listed ..

http://www.sdp-si.com/eStore/Catalog

Larry C ----------Bergen R/C helicopters

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10-01-2015 08:31 PM  33 months agoPost 12
Jim Cimino

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NE Pennsylvania

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Jon,
I think I have a spare main shaft if you need it.

Team Synergy, Team Scorpion, No good deed goes unpunished

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10-02-2015 10:34 AM  33 months agoPost 13
tundra flight

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Coldwater Mi U.S.

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Thanks for all the info guys! Yes I could use that spare main shaft if you have it still! Omg that would be a save..again! Thing flies good..but not much a pilot can do when the throttle is non responsive... Bums me out cause I used blue loctite and all on that set screw! Well...next go around she is getting mounted to a bench and run through a full tank of fuel or two before getting in the air! I'd like to post the video clip of the doomed flight but not sure how to do it here

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10-03-2015 08:48 PM  33 months agoPost 14
Jim Cimino

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NE Pennsylvania

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Jon, pm me your address again and I will get it out to you.

Team Synergy, Team Scorpion, No good deed goes unpunished

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10-08-2015 11:24 PM  32 months agoPost 15
tundra flight

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Coldwater Mi U.S.

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Jim did you get my pm?

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10-09-2015 12:24 AM  32 months agoPost 16
Jim Cimino

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NE Pennsylvania

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Jon, got it, shipped Tuesday.

Team Synergy, Team Scorpion, No good deed goes unpunished

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10-13-2015 04:13 AM  32 months agoPost 17
tundra flight

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Coldwater Mi U.S.

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Thank you so much Jim...got it Friday! Reconstruction begins

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10-15-2015 03:43 AM  32 months agoPost 18
Heliacious

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Newnan, GA

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Can you post the video of the flight?

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10-16-2015 12:32 PM  32 months agoPost 19
tundra flight

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Coldwater Mi U.S.

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I don't know how...someone help me and I will

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12-17-2015 03:09 PM  30 months agoPost 20
Grasshoper

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Celina,Ohio USA

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Revolution 40
I have some canopy's they all have the corners cracked where you hooked the rubber band.As for the tail drive belt. I got the toothed pulley's and belt from Stock Drive Products.Dont remember the part number's,that was way back in the day.

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HomeAircraftHelicopterAntiques or Out of Business › old teeter head on Revolution 40
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