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Rotax Circuit Wiring....... Help would be best and most app

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ptag.dev(at)tiscali.co.uk
Guest

Posted: Sun Jun 10, 2007 8:43 pm Post subject: Rotax Circuit Wiring....... Help would be best and most app

Hi! Guys.  

Apart from about 6 months getting psyched up about the Rotax and all associated with it I’ve been a couple of days and have done the temperature and pressure instrumentation connections (or what I haven’t done I have no problem over!)   

NOW I’M BORED AND WANT THIS BIRD BACK IN THE AIR so I can sleep nights without wakening and having brain traumas.  

   However really I’m quite a “bo bo” on electrics except I do have a fair capability with the English language and so am quite able to know that switches and wires all need connecting to indicator lights(some warning) all in an organised plan with positive buzz  and negative buzz origins all with suitable fuses etc. (oh ! and momentarily “push to break” buttons too!) and ignition port and starboard “mag switches” grounded at both ends and so on, also……  

I have the Europa /Rotax BASIC electrical circuit diagram on which, (in spite of having adequately driven a Jabiru !) is common with my panel set up, so now instead of trawling through pages of Rotax Installation CD all I need is a “paint by numbers” guide as to where a mere hand full of wire “pairs” are supposed to be connected which are all numbered as below.  

Is there please anyone (Rotax electrically competent!) able to assist me with marrying the blessed wire numbers with what their useful and correct destination should be ?   

   

The wire numbers are :-   

a) ………… 10….28 are   ……………………………and go to…………….   ?  

b) ……....... 11….35 are   ……………………………and go to…………….   ?  

c) ………… 25….14 are   ……………………………and go to…………….   ?  

d) …………two yellow shielded……………………..and go to …………….  ?  ( I guess between the Alternator and regulator but I thought the mag wires needed shielding which ever they are?)  

Oh! and that brings to mind the fact that my mag. switches are already grounded but where do I ground the other end ….when I find the shielding ?  

   

Of course wires 19…31…7  and 14….2 all link the turbo waste gate operational motor with the Turbo Control Unit. Rotax were kind enough to have preassembled that !  

   

Here’s hoping I get some response this time since I received a stony silence over my previous posting raising the question of  “preferable rotational timing” of a three blade propeller to the “top dead centre” position of No 1 cylinder firing stroke ? (on a 4 cylinder Rotax!)  

   

Best regards   

Bob Harrison G-PTAG still sat in the garage after past 12 months and counting !  

   

Robt.C.Harrison  

   

       [quote][b]

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Ivor Phillips

Joined: 16 Jan 2006
Posts: 253
Location: London UK

Posted: Sun Jun 10, 2007 11:33 pm Post subject: Rotax Circuit Wiring....... Help would be best and most app

Hi Bob  

Most of the info is in this document,   

If you need more information give me a call.  

Regards  

Ivor  

         

  

From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of R.C.Harrison

 Sent: 11 June 2007 05:42

 To: europa-list(at)matronics.com

 Subject: Rotax Circuit Wiring....... Help would be best and most appreciated ? or ident key would help !  

  

   

Hi! Guys.  

Apart from about 6 months getting psyched up about the Rotax and all associated with it I’ve been a couple of days and have done the temperature and pressure instrumentation connections (or what I haven’t done I have no problem over!)   

NOW I’M BORED AND WANT THIS BIRD BACK IN THE AIR so I can sleep nights without wakening and having brain traumas.  

   However really I’m quite a “bo bo” on electrics except I do have a fair capability with the English language and so am quite able to know that switches and wires all need connecting to indicator lights(some warning) all in an organised plan with positive buzz  and negative buzz origins all with suitable fuses etc. (oh ! and momentarily “push to break” buttons too!) and ignition port and starboard “mag switches” grounded at both ends and so on, also……  

I have the Europa /Rotax BASIC electrical circuit diagram on which, (in spite of having adequately driven a Jabiru !) is common with my panel set up, so now instead of trawling through pages of Rotax Installation CD all I need is a “paint by numbers” guide as to where a mere hand full of wire “pairs” are supposed to be connected which are all numbered as below.  

Is there please anyone (Rotax electrically competent!) able to assist me with marrying the blessed wire numbers with what their useful and correct destination should be ?   

   

The wire numbers are :-   

a) ………… 10….28 are   ……………………………and go to…………….   ?  

b) ……....... 11….35 are   ……………………………and go to…………….   ?  

c) ………… 25….14 are   ……………………………and go to…………….   ?  

d) …………two yellow shielded……………………..and go to …………….  ?  ( I guess between the Alternator and regulator but I thought the mag wires needed shielding which ever they are?)  

Oh! and that brings to mind the fact that my mag. switches are already grounded but where do I ground the other end ….when I find the shielding ?  

   

Of course wires 19…31…7  and 14….2 all link the turbo waste gate operational motor with the Turbo Control Unit. Rotax were kind enough to have preassembled that !  

   

Here’s hoping I get some response this time since I received a stony silence over my previous posting raising the question of  “preferable rotational timing” of a three blade propeller to the “top dead centre” position of No 1 cylinder firing stroke ? (on a 4 cylinder Rotax!)  

   

Best regards   

Bob Harrison G-PTAG still sat in the garage after past 12 months and counting !  

   

Robt.C.Harrison  

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M.Grass(at)comcast.net
Guest

Posted: Mon Jun 11, 2007 1:22 am Post subject: Rotax Circuit Wiring....... Help would be best and most app

Bob,

  

 The wire numbers are :- 

  

 a) 10….28 are   12 V Warning light red  "Boost" (28 is the positive side and  10 is the negative side)   

  

 The newest English installation manual has an error  here. The older English manual is correct and is also identical with the newest  German installation manual. 

  

 b) 11….35 are   12 V Warning light orange  "Caution" (35 is the positive side and 11 is the negative side)

  

 For a+b: Caution !!! Do not connect the negative  side to ground and do not connect the positive side to +12V bus!!!

  

 c1) 25 goes to the aircraft ground bus

  

 c2) 1 goes via a 2 amp fuse to your 12 V  bus

  

 c3) 14 + 2 is for the 2 pole servo isolation  switch. The isolating switch has to be installed directly into the lines from  the 36 pole plug receptacle to servo motor. Be careful not to change the  polarity. Cut firs wire and connect to the switch before you move to the second  one.  

  

 d) two yellow shielded alternator output and go to  the G terminals of the regulator. No polarity required but do not connect them  together into one terminal? 



 You find very detailed information in chapter  19 of the 914 installation manual. Again, caution with chapter 19.4.10 of the  Juli 01/2006 manual. The polarity has been marked wrong in the English  translation.

  

 Best regards

  

 Michael Grass

 A266 Trigear, Detroit

 [quote]   ---

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ptag.dev(at)tiscali.co.uk
Guest

Posted: Mon Jun 11, 2007 5:08 am Post subject: Rotax Circuit Wiring....... Help would be best and most app

Thanks Michael, along with Ivor Phillips you are stars.  

Problems solved, initiated not only by my apparent inability to understand the instructions but also since I was looking for the mag kill wires which Rotax don’t do !  

Woops! I must be careful I might give the impression I’m half intelligent on these matters. I’ve been looking for “bullet” connectors but now have been pointed in the direction of an A4 photo copy of pictures of the replacement for the “bullets”being tiny spade connectors . The photo copy was stapled to the rear of the first prime up of lubrication!  

REGARDS  and thanks  

Bob H G-PTAG  

     

Robt.C.Harrison  

  

   

-----Original Message-----

 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Michael Grass

 Sent: 11 June  2007 10:20

 To: europa-list(at)matronics.com

 Subject: Re: Rotax Circuit Wiring....... Help would be best and most appreciated ? or ident key would help !  

     

Bob,  

    

   

    

The wire numbers are :-   

    

   

    

a) 10….28 are   12 V Warning light red "Boost" (28 is the positive side and  10 is the negative side)    

    

   

    

The newest English installation manual has an error here. The older English manual is correct and is also identical with the newest German installation manual.   

    

   

    

b) 11….35 are   12 V Warning light orange "Caution" (35 is the positive side and 11 is the negative side)  

    

   

    

For a+b: Caution !!! Do not connect the negative side to ground and do not connect the positive side to +12V bus!!!  

    

   

    

c1) 25 goes to the aircraft ground bus  

    

   

    

c2) 1 goes via a 2 amp fuse to your 12 V bus  

    

   

    

c3) 14 + 2 is for the 2 pole servo isolation switch. The isolating switch has to be installed directly into the lines from the 36 pole plug receptacle to servo motor. Be careful not to change the polarity. Cut firs wire and connect to the switch before you move to the second one.    

    

   

    

d) two yellow shielded alternator output and go to the G terminals of the regulator. No polarity required but do not connect them together into one terminal?   

    

You find very detailed information in chapter 19 of the 914 installation manual. Again, caution with chapter 19.4.10 of the Juli 01/2006 manual. The polarity has been marked wrong in the English translation.  

    

   

    

Best regards  

    

   

    

Michael Grass  

    

A266 Trigear, Detroit  

  [quote]    

---

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