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05-08-2018, 05:24 AM
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Join Date: Feb 2005
Location: 20km outside of Zurich, Switzerland
Posts: 467
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Automatic Pitch Trim and VPX
Hello
Time to upgrade my TruTrack AP equiped RV-7A with an Automatic Pitch Trim module.
One big question ... does it work in with a VPX?
Because the unit gets joined between the VPX and trim servo, the VPX will see some signal/triggers on the output ...
Schematics here: https://cdn.shopify.com/s/files/1/21...51448760409847
So far I did not got any answer from Vertical Power support ... Hope Chad is reading this.
Thanks for any information ... maybe you are running it allready on your plane.
__________________
Dominik
RV-7A, TMX-IO-320, FM-150, Sensenich FP
Flying since 28. April 2016
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05-08-2018, 05:48 AM
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Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,194
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Quote:
Originally Posted by swisseagle
Hello
Time to upgrade my TruTrack AP equiped RV-7A with an Automatic Pitch Trim module.
One big question ... does it work in with a VPX?
Because the unit gets joined between the VPX and trim servo, the VPX will see some signal/triggers on the output ...
Schematics here: https://cdn.shopify.com/s/files/1/21...51448760409847
So far I did not got any answer from Vertical Power support ... Hope Chad is reading this.
Thanks for any information ... maybe you are running it allready on your plane. |
It works just fine. I've been flying with both for five years.
Wire it like it states in the Vertical Power install manual (5.19c) and the Trutrak install manual you'll be fine. The VP manual only shows the connections unique to it. |
05-08-2018, 05:53 AM
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Join Date: Feb 2005
Location: 20km outside of Zurich, Switzerland
Posts: 467
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Hello Bob
Thank you!
Ok, my fault not looking into the actual VP manual ... just was reading the TruTrack manual and my "old" VP manual ...
BR
__________________
Dominik
RV-7A, TMX-IO-320, FM-150, Sensenich FP
Flying since 28. April 2016
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05-08-2018, 06:12 AM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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The TruTrak module disconnects the wires coming from the VPX when the auto pilot engages and runs he trim by itself. The VPX doesn?t know the difference.
__________________
Jesse Saint
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05-08-2018, 06:25 AM
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Join Date: Jul 2009
Location: Wilsonville, OR
Posts: 453
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Yes, the autotrim module works great with a VP-X. You'll have to dial in the setting using the adjustment knob-on the autotrim box, so be sure you have some access to it while flying.
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Trevor Conroy CFII, MEI
Airbus Pilot
N781TD
RV-7
First Flight - April 12, 2015
Construction Log
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05-08-2018, 07:28 AM
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Join Date: Feb 2005
Location: 20km outside of Zurich, Switzerland
Posts: 467
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Adjustment only once?
Hello Trevor
Do I have to adjust this only once after installation ...
Or from time to time ...
Or during every flight?
__________________
Dominik
RV-7A, TMX-IO-320, FM-150, Sensenich FP
Flying since 28. April 2016
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05-08-2018, 08:05 AM
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Join Date: Jan 2005
Location: Charlottesville, Virginia
Posts: 1,227
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Good Question
Quote:
Originally Posted by swisseagle
Hello Trevor
Do I have to adjust this only once after installation ...
Or from time to time ...
Or during every flight?
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Great question.......I want to install auto trim in my RV-6 and the Auto trim info says to place it close to the servo, which is behind the baggage bulkhead, which is normally only seen during CI's.
__________________
Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1200+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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05-08-2018, 09:22 AM
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Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,194
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Quote:
Originally Posted by Bob Martin
Great question.......I want to install auto trim in my RV-6 and the Auto trim info says to place it close to the servo, which is behind the baggage bulkhead, which is normally only seen during CI's.
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Yes, it's just adjusted once. Mine sits adjacent to the pitch servo in the empennage of the RV-10 |
05-08-2018, 03:43 PM
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Join Date: Jul 2009
Location: Wilsonville, OR
Posts: 453
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Quote:
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Do I have to adjust this only once after installation ...
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I only had to adjust mine on the first flight after installing the auto-trim box and haven't touched it in 3 years.
__________________
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Trevor Conroy CFII, MEI
Airbus Pilot
N781TD
RV-7
First Flight - April 12, 2015
Construction Log
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05-10-2018, 02:33 AM
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Join Date: Feb 2005
Location: 20km outside of Zurich, Switzerland
Posts: 467
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Thanks to all that responded ... waiting for the auto trim to arrive!
__________________
Dominik
RV-7A, TMX-IO-320, FM-150, Sensenich FP
Flying since 28. April 2016
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