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HomeAircraftHelicopterBeginners Corner › Setting Correct Pitch.
03-29-2005 10:08 PM  13 years agoPost 1
Damo-50

rrNovice

Navan, Ireland

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Hello,
My stock blades on my Raptor 50 are out of tracking. I have ordered a pitch gauge to try and get the correct blade tracking set up again.
I have not adjusted the tracking since the heli was set up for me in January. I am now doing circuits and stall turns and fast forward flight, one of the guys in the club tried to sort it out for me at the weekend, but did not have a pitch gauge.
I realise I need to adjust the linkage rods for the main rotor head assy, I just need some advice as to how to set the pitch and correct tracking .

Any help would be great.

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03-29-2005 11:51 PM  13 years agoPost 2
Zephan

rrApprentice

Lompoc, CA

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There isn't a "correct pitch" to get the blades to track. Ideally, if you set the same pitch on both blades when they are both over the same place (ie over tail), then they will be "tracked". However, due to one blade flexing more than the other under load, twists in the blades, etc. They may not track when spun up. The only way to track them is to adjust them a little after seeing if the disc is "flat" and try again.... There is a good explaination on RaptorTechnique .

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03-30-2005 12:27 AM  13 years agoPost 3
Wisdom-Seeker

rrVeteran

Danville, CA

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If you're having trouble with tracking going out all of the time, then you should check to see if your blade dampers need lubing.

--

Wisdom-Seeker
Protest letter to insurance co.: What do you mean "Act of God"?

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03-30-2005 02:38 AM  13 years agoPost 4
jjeaster222000

rrVeteran

Bedford in

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Get that pitch gauge, All you goto do is set you transmiter at mid stick and adjust links to make blades 0% pitch at mid stick on both blades and you will track just fine always have a master blade mark one blade and let it be your master but this was explaind to me and it has worked many times

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03-30-2005 08:40 AM  13 years agoPost 5
Damo-50

rrNovice

Navan, Ireland

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Thanks a million guys for your feedback.
My Pitch Gauge is on it's way. I'll give it a go as soon as it comes.

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03-30-2005 10:07 AM  13 years agoPost 6
Rawlie

rrApprentice

JHB

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Also try swapping the blades around.

When I built my first heli I set the pitch perfectly and the blades were about 1 - 2 inches out of track. I then swapped the blades around and it was perfect.

The more care you take when building the heli and setting the initial pitch on both blades to zero, the less hassle you should have tracking.

I have also found that carbon blades track a bit better than woodies, because woodies absorb moisture and sometimes change shape over time.

Cheers

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04-05-2005 10:21 AM  13 years agoPost 7
Damo-50

rrNovice

Navan, Ireland

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Thanks Rawlie,
You were right, I had done some servicing on the one way clutch a few weeks ago and put the blades back with out noting the blade holders.
I swapped the blades around on Saturday and they were bang on. Perfectly aligned.
No need for my new Pitch gauge yet, but at least I have one now.

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04-06-2005 09:14 PM  13 years agoPost 8
thenapster

rrNovice

CA, Fallbrook

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Check instrution manual and gyro manual
http://www.jamesonm.com

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04-06-2005 09:39 PM  13 years agoPost 9
digiblast

rrNovice

Baton Rouge, la

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glad you got your problem solved like Rawlie mentioned.
Back then I took the blades out for servincing and after reinstalled the blade, they were out of track. I was lost but after swap the blades it track correctly again. Since then I got two more set of wood blades and it does the same, one must pitch more than the other???

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04-06-2005 09:55 PM  13 years agoPost 10
Wisdom-Seeker

rrVeteran

Danville, CA

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Since then I got two more set of wood blades and it does the same, one must pitch more than the other??
It's not so much a matter of pitch as it is a matter of slight warpage. For this reason, whenever I remove and the re-install the same pair of woodies, I mark one blade and the grip that held it so that I can put the blades back into the same grip. I know for certain that my current pair of woodies do not produce identical lift vs. pitch.

--

Wisdom-Seeker
Protest letter to insurance co.: What do you mean "Act of God"?

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04-08-2005 08:16 PM  13 years agoPost 11
Ted Toth

rrElite Veteran

Myrtle Beach S.C.

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Great Set Up Vids

.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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