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11-10-2005 12:30 AM  14 years ago
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Jack Skip

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Abaco, Bahamas

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Glitches? Not sure.
I ran out a few tanks again this afternoon. Mostly hovering. A little forward flight. It was a bit windy. I have to learn not to watch the balls on the training gear. Throttle and pitch curves set for hovering at half stick. That makes it allot smoother than at 3/4 stick like on Monday. Even a tad sluggish. Better than too snappy at this stage. But WAY too much fun.

Question: A few times tonight she "glitched". A lot less than Monday night with bad fuel. It seems to happen when she is close to the ground. She would drop maybe 5 inches. Tail quivered (nose left, tail right). After the drop and quiver she would become stable again.

Engine seemed real rich and seemed to be running smooth. Gyro seemed to be operating well in HH, without any hunting or drift. Rock solid on tail until rudder applied. She was doing it Monday in Normal gyro mode too.

Not sure if this is normal. Or what might be causing this. Could it be engine too rich?
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11-10-2005 02:34 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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Antenna?
My antenna runs along the skids, up the tail support and reaches about 4 inches along the tail boom.

Would the tail shaft cause interference?

Just a thought.
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11-10-2005 02:58 AM  14 years ago
SteveH

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Texas

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Jack,

Your antenna route sounds OK to me. Not really shure you are getting glitching. Does the sound of the engine change when the heli looses altitude? It could be 4 stroking if it's too rich and that could cause it to loose altitude and also be the cause of the "quiver".
The government cannot give you anything without first taking it from someone else.
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11-10-2005 03:03 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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Ok. I'll try and lean it a bit tomorrow and try it.

Other than that she flies GREAT. I love her. And am having fun.
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11-10-2005 08:01 PM  14 years ago
NewHeli

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Pittsburgh, Pennsylvania, USA

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Yes, a rich engine could cause the tail twitch, but I'm not sure about the up and down thing...check my gallery for reciever (rx.) antenna routing.

As for my suggestion, DO NOT learn to hover at 1/2 stick! This is fine for hovering, but when you get into switching between modes (normal, idle up 1 and 2, hold) you settings will change when you flip the switch. For example: Say you are hovering at 1/2 stick at 60% throttle and 5 pitch. Now you are ready to move into idleup, while still hovering. Lets say Idle up 2 IS SET UP, like I suggested, to 0 pitch, and if you have a governor, probably around 1800 rpm (if no governor, your throttle will be 50 or less). Now, when you flip the switch, your heli will drop, because of less power and less pitch, and you will have to compensate on the throttle stick.
If you hover at 3/4 stick, nothing will EVER CHANGE--this is a good thing as you will not have to be constantly moving the throttle between modes. I highly recommend that you go back to hovering 3/4 stick.

Yes, 1/2 might be "smoother" and less sensitive, but I think you'll become a more precise pilot at 3/4 stick.

Nathaniel
Nathaniel Rice
Team YS Engines
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11-10-2005 11:01 PM  14 years ago
Jack Skip

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Abaco, Bahamas

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I undestand your insistance for using 3/4 hover, and agree with this approach, so I do not have another learning curve later. I intend to use this approach, once my engine stats to behave.

However, the engine sputters have me spooked. I flew again this afternoon (isn't life great). But I totally screwed up the engine settings. The sputters were so much worse it got the heli to shake violently. If low the sputter would be enough to cause the heli to land hard, resulting in blade inbalance then vioent shaking. Even higher up, the sputter alone would cause a drop sudden enough to result in the same violent shaking.

I went back to SteveH settings. 4 turns out on low end. 4 1/2 on high end. But engine was flooded at that point and when I tried to stat the fan spun loose.

I think I will have a few beers tonight and think about this.

Do I need an OS37?

Will OS37 fit Toki muffler? That muffler looks real nice hanging down the side.

I think I would rather spend a bit more and avoid frustrations. Isn't time valuable?
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11-10-2005 11:17 PM  14 years ago
SteveH

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Texas

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Jack,

As the engine brakes in, the mixture will richen. The settings I gave you were for initial flights, and you probably need to lean it now. Just guessing, I would recommend going to 4 turns on the low and 4 turns on the high end, and these are guesses because I don't know what fuel you are useing, etc.

With the low end mixture, listen how the engine sounds when you start it and take the glow driver off. It should slow slightly when you take the driver off. Try adjusting it on the lean side and listen as you take the driver off...there will be no change in sound. The Toki carb is just like the one on the OS...the low adjustment controls the hover mixture more than the high speed mixture.

About your fan, you have spun the clutch off. Get a crank lock and tighten the fan with locktite real good. I use a plastic airplane prop cut down wedged between the rod and the crankcase. The nut over the fan needs locktite but it does not need to be real tight. Let us know how it does.
The government cannot give you anything without first taking it from someone else.
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11-10-2005 11:41 PM  14 years ago
Jack Skip

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Abaco, Bahamas

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Umm. Between the rod and the crankcase? That means taking the back cover off?

I have lots of plane props. Not so interested in plank flying anymore. Helis are much more fun.
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11-10-2005 11:43 PM  14 years ago
SteveH

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Texas

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Yep, take the back cover off and that way you can lock the crank and get the clutch on tight.The government cannot give you anything without first taking it from someone else.
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11-11-2005 01:26 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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Umm. With plane engines we put them on stands or hold them down and run them up.

How do you tune a heli engine? She has to fly.
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11-11-2005 01:54 AM  14 years ago
NewHeli

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Pittsburgh, Pennsylvania, USA

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Another trick for getting the fan tight, in addition (not instead of) to using the crank lock, is to hold onto the fan with a towel--this gives you a grip on the fan without hurting your hands and without the risk of breaking fins off of it.

Next time your engine floods, take out the glow plug. Then insert your starter and crank the engine over. You will be surprised what comes out of the glow plug hole--but remember to put the plug back in!
And your fan and clutch should not unscrew so easily--usually a flooded heli engine means that the starter won't turn over--not the fan coming off. Make sure you get it tight.

Sounds to me like your "glitches" are engine sputters. And be glad for that--real ones drive you insane!

Nathaniel
Nathaniel Rice
Team YS Engines
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11-11-2005 02:08 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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Thanks again guys.

After a fews beers and some thought. Its not bad. Heli is in one piece. She lived another day. And I flew her another day. All is good.
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11-11-2005 02:10 AM  14 years ago
NewHeli

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lol

Make sure you don't fly right after those beers

Nathaniel
Nathaniel Rice
Team YS Engines
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11-11-2005 02:14 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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No way. That is SIM time. Lol.
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11-12-2005 02:39 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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TOKI gone Bye Bye
I opened up the back of the engine to tighten down the fan like suggested. Plastic prop broke out the bottom part of the piston. Bet she won't tune now. Pieces of metal in the crankcase prolly won't help either..

I am going to try the OS 37. OS engines always worked for me in planes.

Easy to tune. Run solid and consitently. No more TOKI for me.
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11-12-2005 02:42 AM  14 years ago
NewHeli

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Pittsburgh, Pennsylvania, USA

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????

How did you have the prop in there?

Anyways, if you get the 37, get a the Hatori pipe for it.

Nathaniel
Nathaniel Rice
Team YS Engines
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11-12-2005 02:52 AM  14 years ago
littleman

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Pasadena, Ca

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and the OS crank lock tool
A.J.
Proud member of Teams MSH USA, Futaba, Scorpion, & Nick Maxwell Products
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11-12-2005 03:35 AM  14 years ago
Jack Skip

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Abaco, Bahamas

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Will the Toki pipe work?
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11-12-2005 03:42 PM  14 years ago
NewHeli

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Pittsburgh, Pennsylvania, USA

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Probably, but the hatori is tuned to the 37.

I would really like to know how you broke the piston--and yes, get yourself a crankshaft locking tool (NOT A PISTON LOCKING ONE!!!!!!)

Nathaniel
Nathaniel Rice
Team YS Engines
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11-12-2005 07:09 PM  14 years ago
Jack Skip

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Abaco, Bahamas

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I had the prop wedged on the side, trying to prevent rotation. Rotation happened and the piston came down on the prop. It broke off portion sof the very thin bottom portion of the piston.

I could get a new piston for a couple dollars. But I was not happy with tuning on engine and ordered the OS37.

Has you or anyone tried or seen an OS37 on a Toki pipe? I saw a Hatori tuned pipe for sale that looked similar ti the Toki pipe> I saw another advertised for the Toki and OS37.

http://www4.mailordercentral.com/he...p?number=064002
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