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Ron’s HeliProz South . Century Helicopter . MTA Hobbies

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Beginners Corner > JR Pitch Guide
 
 
David Orr
Heliman
Location: Great Falls, Virginia

To All,

I purchased a JR Pitch guide when in LA last week ( from MTA Hobbies in Torrance-one of the sponsors !) and I'll be damned if i can figure out how to use it. The instructions are in Japanese and translated english and boy is the wording awful- I can't make sense of it.

Where on the blade do you put it.? How do you get the meter to read properly ? Any kind of help would be appreciated.

David Orr
05-20-2002 Over year old.
 
 
rtalley
Heliman
Location: Andrews TX

JR Pitch Gauge

Pitch it in the trash. That's how you use that one.

You have to slide it all the way on your blade, just before the blade holder. Level your flybar and level the top of the clear plastic part of the pitch gauge while keeping the flybar level. Then read your pitch.

Best thing to do is buy a Robart Pitch Meter. I think Tower Hobbies sells them. About all the Mail order places sell them.
05-20-2002 Over year old.
 
 
David Orr
Heliman
Location: Great Falls, Virginia

Hey thanks- I'll order one now.
For the life of me, I sure wish the guy at the hobby shop steered me that way.
05-20-2002 Over year old.
 
 
rcpylon
Senior Heliman
Location: Saltillo, MS

First pick one of your blade grips to be your master grip and mark it in some fashion so you can pick it out. I have put a paint dot on them or scratched an 'x' on my main grip. You will always use this grip for setting your pitches. Once you get the master grip set, you will fly your bird and adjust your other grip so the blades track together.

Next level the swashplate out and make sure your flybar shaft is parallel to your grips. now take your main grip with blades installed and swing it either to the side of the heli or to the front. you will also always swing to the same place. doesnt really matter which place as long as you use the same place each time.

Now place the pitch gague on your main blade around halfway up the blade. The exact point is not critical but you always again want to use the same location especially with wood blades. The idea is you want to sight along the top of the gague and line it up with your flybar shaft. If your shaft is above the grips place it on normal. If however your shaft is below your grips, I just flip mine upside down and use it that way (just 'reverse' the +- readings).

Now you are ready to set your pitches. Just find out what you want for each position, this is usually in the manuals for your particular heli, set it on the gague and then adjust your programming (which moves the blade) so the top of the gage becomes level with the shaft. Just repeat this for each stick position (at least low-mid-high stick) and each mode (normal, throttle hold, stunt/idle up #1, stunt/idle up #2, etc.) Your radio manual should cover how to set the pitch curves up.

When all is said and done I usually take a look at how the blades are moving in each mode and make sure they look right. This provides an 'idiot factor' check.

FYI- I have both gagues and like both. The Robart is nice but it only goes up to +-10 deg while the JR gague and most others goes up to 12+.

If you can find someone local to help you with this it will help. This is a situation where a picture is worth a thousand words. It isn't a difficult chore to handle just kinda hard to describe.

Good luck,

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Alan Warfield
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05-20-2002 Over year old.
 
 
David Orr
Heliman
Location: Great Falls, Virginia

Wow- what a great response- thanks for taking the time to help me-I'm going to print out your reply and take it home and try it out tonight !! Thanks again,

David Orr
05-20-2002 Over year old.
 
 
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Beginners Corner > JR Pitch Guide
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