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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Multi Gov Pro on Trex 700LE with Back Plate Sensor: Flush or 2mm Gap???
04-03-2010 04:26 AM  10 years ago
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Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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Multi Gov Pro on Trex 700LE with Back Plate Sensor: Flush or 2mm Gap???
So I have set up Multi Gov's before with standard magnet sensors. For that configuration, you slowly turn the fan to center the magnet under the sensor, and you get a reading of "On" with the Multi Gov Pro.

But I am using a backplate sensor on this bird. I have the sensor approx 1 to 2mm away from the backplate bottom, and when I turn the engine slowly, I only get --- displayed. No"On".

Now if I actually spin the engine over with my starter, I noticed that it reads "On" and stays on. Is this my indication that the sensor is at the correct distance???
Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know
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04-03-2010 04:29 AM  10 years ago
george0079

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USA

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If you use a 6mm allen wrench to turn the engine over, by hand, you should be able to get the the sensor to readHell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!
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04-03-2010 04:46 AM  10 years ago
Rockohaulic

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george and all,

Update:

So I moved the sensor so that it was flush or bottomed out with the bottom of the backplate. In that position, I could read it when manually turning the engine over with the hex. It would read "On" and then "----" and "On" again while turning it.

My concern is that a buddy of mine who used the Align governor first tried it with the sensor flush, and it didn't work. He had to have a gap of about 1 to 2mm before it would work properly.

So the bottom line is, with the Multi Gov Pro, should I set the sensor flush, or use a gap of 1 to 2mm????
Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know
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04-03-2010 01:43 PM  10 years ago
Zaaaguy72

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MN

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For me to get the sensor to work properly on my ar7100r (revmax) I had to set it about 1mm away. Also make sure the sensor is mounted all the way at the bottom of the crankcase, not on the side. The reason you need the 1mm to 2mm gap is so the sensor only picks up the crank, not the crank and the pin.Team Sanjel!
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04-03-2010 03:44 PM  10 years ago
Zaaaguy72

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Are you using a ys or os motor?Team Sanjel!
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04-03-2010 03:46 PM  10 years ago
george0079

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USA

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1mm gap.Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!
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04-03-2010 03:49 PM  10 years ago
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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It's a YS91SR.

So what happens if it is too close (flush with the bottom)???
Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know
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04-03-2010 03:53 PM  10 years ago
george0079

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USA

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If it's too close, the sensor reads a constant "on" when the engine is running. The gov won't workHell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!
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04-03-2010 04:09 PM  10 years ago
Zaaaguy72

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MN

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The os motor likes to be butted up right on the back plate and the ys likes a gap.Team Sanjel!
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04-04-2010 12:47 AM  10 years ago
Yug

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UK. Herts

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^^ I found similar. Seems the YS has a greater ferromgnetic strength which seems to over-saturate the sensor and assiciated electronics. I know this doesn't explain the findings but it's worth consideration.Vegetable rights and Peace
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04-04-2010 01:03 AM  10 years ago
Zaaaguy72

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MN

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You can use whatever big words you want, but you're still right!!! Haha!Team Sanjel!
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04-04-2010 05:42 AM  10 years ago
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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a greater ferromgnetic strength which seems to over-saturate the sensor
I'm thinking a good 1.21 gigawatts should saturate the flux capacitor with sufficient strength!
Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know
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04-04-2010 06:12 AM  10 years ago
Zaaaguy72

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A bolt of lighting! Haha!Team Sanjel!
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04-04-2010 07:17 AM  10 years ago
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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A bolt of lighting. Unfortunately, you never know when or where it's ever gonna strike.Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know
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04-04-2010 05:05 PM  10 years ago
Zaaaguy72

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MN

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Well I hope the gap works on the ys, because I just slipped and hit my head on the toilet and the idea came to me!Team Sanjel!
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04-05-2010 03:03 AM  10 years ago
Nycatt

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New York

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Don't be concerned what it reads when you manually turn it. As long as it reads ON once set your idles and tech it. The YS91SR has a large crankshaft pin. If you have it too close, the sensor will pickup the pin twice for 1 turn.


Team Synergy
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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Multi Gov Pro on Trex 700LE with Back Plate Sensor: Flush or 2mm Gap???
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