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HomeAircraftHelicopterMain Discussion › CY pipe falls off?
12-31-2017 01:53 AM  6 months agoPost 21
JuanRodriguez

rrProfessor

The Villages, Florida

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Do yourself a favor and delete that video . Not doing you any favors..... half the time the heli is out of the frame and the rest of the time the auto focus is pulsating in and out of focus .....repost one when you’re feeling better !!
just my opinion....

Been there, done that and old enough to know better.....

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12-31-2017 01:58 AM  6 months agoPost 22
InvertedDude

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USA

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JuanRodriguez

I warned in advance!

Close your eyes and listen to the engine! I will get a better video soon. I need someone to hold the camera! Fly your butt here to AZ and hold my dam Camera!

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12-31-2017 02:03 AM  6 months agoPost 23
ICUR1-2

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Ottawa, Ontario

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It sounded good to me at the start
I couldn't watch the whole video either
I like to hammer on it before tuning. Bring up to temp a bit first. Making sure it won't stall out at full throttle.

spending time, paying attention

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12-31-2017 02:12 AM  6 months agoPost 24
JuanRodriguez

rrProfessor

The Villages, Florida

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So I closed my eyes and listened to the motor ..... sounded like it’s bogging pretty good even during your gentle turns ....
During your “punch outs” the motor was REALLY bogging down . Didn’t sound at all happy....
Either the motor is not tuned right, lacking power or there is too much pitch in the blades ......

If this is your 32 motor in an R50, it may explain some of it .....

Been there, done that and old enough to know better.....

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12-31-2017 02:21 AM  6 months agoPost 25
InvertedDude

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USA

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JuanRodriguez
Okay, so lower gearing a little. I am surprised it is bogging. I don't feel it in my sticks or losing power.

I left it at full throttle/pitch on that long streak.

I guess I will swap out the R50 gearing and put in the R30 gearing then?

It felt very stable to me....

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12-31-2017 02:34 AM  6 months agoPost 26
JuanRodriguez

rrProfessor

The Villages, Florida

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InvertedDude
It felt very stable to me....
Stability has nothing to do with power......

In your settings, you don’t state how much pitch you are running (unless I missed it)..... nor do you state what type of curve you’re using ..... 3D type ?? Such as with 0 degrees at center stick ?? It could be that your running too much pitch for that little motor ....and it also could be how the throttle linkage is set up .....
Bottom line is that it’s hard to judge if the tuning is right when you can’t hear how the motor sounds ......

Been there, done that and old enough to know better.....

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12-31-2017 02:49 AM  6 months agoPost 27
InvertedDude

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USA

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JuanRodriguez
Okay

Pitch is +11.25 and -10.75 Center is 0

The camera shows the rotor head stable at 1800rpms under load....You see 2 blades staying straight or close to it. Trick I learn from Pistol Pete!

I will swap out the R50 gearing to R30 and try again.

I always thought that if RPMs is stable under load then you are good. You are not gonna get it spinning 2100 rpms under load like bigger engines can.

The helicopter will fall back to the earth if the blades lose speed, like my caliber 30. If I am not very careful, I can stall it easily. The Raptor 30, I am moving it well. The camera sucks anyways.

It feels light in the air...maybe my flying sucks. I am kinda surprised you are being critical. Well that is okay with me, least I got your ears and experience!

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12-31-2017 03:17 AM  6 months agoPost 28
JuanRodriguez

rrProfessor

The Villages, Florida

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InvertedDude
I am kinda surprised you are being critical
Really? I thought the reason for you posting all this stuff was to get constructive input .... if not, then that’s ok too

Been there, done that and old enough to know better.....

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12-31-2017 03:23 AM  6 months agoPost 29
InvertedDude

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USA

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Really? I thought the reason for you posting all this stuff was to get constructive input .... if not, then that’s ok too
Relax, it is okay. I welcome critical input. Others are saying it sounds good. I am about done with the 86/9 gearing swap. If this doesn't improve it. I got a OS 37 engine too!

Does the RPMS sound stable after it has settled down under load from a higher rpms?

Or does it sound like the motor is continually losing rpms to the point where the blades/lift starts to stall?

When You look at the video the blades are stable under light turns....

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12-31-2017 03:26 PM  6 months agoPost 30
JuanRodriguez

rrProfessor

The Villages, Florida

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InvertedDude
Relax, it is okay. I welcome critical input.
I am relaxed but you're comment about being surprised at receiving criticism contradicts "I welcome critical input ...."
InvertedDude
Does the RPMS sound stable after it has settled down under load from a higher rpms?
Yes, but so does a motor that has seen its better day or a motor that's not tuned optimally......
InvertedDude
Or does it sound like the motor is continually losing rpms to the point where the blades/lift starts to stall?
The blades are not stalling...... what's happening is that the motor can't produce enough power and thus, bogs pretty badly...... I wish you could hear it, it's very pronounced....... likewise, the motor sound like (to me) it's struggling a bit during your gentle turns.....

You had one other comment above that "it sounded OK at the start"....I think I already said that it sound OK while in a hover..... but beyond that......
InvertedDude
When You look at the video the blades are stable under light turns....
I go by sound which is an indication of how the motor and tuning is doing.....The blades may appear to be "stable" because they are not under much load at that point.....

Have you ever tried using a governor ??

Years ago I was at IRCHA in Ohio with Ray Stacy and others in our heli group when the Raptor 30 made its debut.

Back then we were running the OS 32 with TJ Pro (Throttle Jockey ) and running 30 % fuel (when it was cheap) and had pretty good performance with that combo..... During full throttle/pitch punchouts with the right pitch/throttle curves, we could maintain rotor RPM (no bogging) and in some cases with a strong motor, the RPM's would increase slightly several seconds into the climb.....all of this while watching the smoke trail......

We used this method (RPM and smoke trail) to make our needle valve adjustments..... What we looked for was a steady smoke trail and constant RPM all the way up during the punch out (8-10 seconds in duration)......If the smoke trail thinned out excessively, motor too lean. Land and richen a click or two at a time..... conversely, if the motor spewed out A LOT of smoke and seemed to loose power during the punch out, motor too rich... land and lean out a click or two at a time...... we tweaked the high speed needle to achieve this.... and then we would re-adjust the low end as needed.....

This method takes several punchouts so that you can "sneak up" on the right settings....

Been there, done that and old enough to know better.....

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HomeAircraftHelicopterMain Discussion › CY pipe falls off?
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