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Thruster87
Joined: 16 Apr 2008
Posts: 193
Location: Australia
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 Posted: Fri Sep 11, 2009 4:23 pm Post subject: Ray Allen T2-7A trim sevro problems |
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Hi Just installed the aileron trim and elevator trim units but the elevator LED indicator powers up OK but only indicates one position which is up.I changed the elevator trim LED to the aileron trim LED and everything is OK.Checked all wiring to elevator trim servo.So it appears that the problems stems inside the elevator trim servo unit.What can be done ? Cheers Alan [if I hold the red and black wires to the elevator LED indicator it seems to work depending on how tight I squeeze thus my body resistance changing]
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chris Sinfield
Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia
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| Posted: Sat Sep 12, 2009 2:19 am Post subject: Re: Ray Allen T2-7A trim sevro problems |
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Alan
borrow my elevator trim actuator to prove its that and then send it back to get fixed? or get your aileron one out to prove the same..
Chris..
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rock5219
Joined: 23 Jun 2006
Posts: 14
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| Posted: Sat Sep 12, 2009 3:26 am Post subject: Re: Ray Allen T2-7A trim sevro problems |
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I just hooked mine up a couple of weeks ago, complete with the speed reducer. Work great. I'll see if we made any changes from the installation drawings. Randy R.
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Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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| Posted: Sat Sep 12, 2009 2:56 pm Post subject: Re: Ray Allen trim servos and TSCMR Real Servos. |
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You can send the trim box back to Ray Allen and they will be happy to fix it for you. For anyone who wants to know more about the trim box, see the last few pages of: http://tiny.cc/w1W5p
A couple of notes: I have a couple TSCMRs left, but I have recently started delivering TSCMR-A with the following changes:
1) Uses Ethernet Cat 5E cable for connection.
2) Furnished with the control pot.
3) "In Transit" and "Locked" indicator LEDs
4) Much improved LED bar graph support
5) Added Needle Indicator support
The "Much improved LED Bar Graph support" is the result of my abandoning the MAC/RAC standard voltages where they use 1.2 Volts as the maximum voltage to be sensed by the bar graph innards. This was always problematic, and resulted in many complaints of jumpy bar graphs when transmitting, etc. I changed this to 12V and life is much easier.
When I look up at the night sky and think about the billions of stars and galaxies out there, I think to myself: I'm amazing!
- Peter Serafinowicz
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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net |
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buzzleo(at)graceba.net
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| Posted: Sun Sep 13, 2009 2:41 pm Post subject: Ray Allen T2-7A trim sevro problems |
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I can’t find this in acronym finder “TSCMR” what does it mean?
SEL
[quote][b]
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Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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| Posted: Sun Sep 13, 2009 3:52 pm Post subject: Re: Ray Allen T2-7A trim sevro problems |
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True Servo Control for MAC/RAC. This name comes from the fact that the MAC/RAC trim box is just a motor and a position indicator pot that are not connected to each other. The TSCMR makes it a real servo and there are advantages to doing so. See my website.
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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net |
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