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alan.twigg775(at)gmail.co
Guest

Posted: Thu Feb 06, 2014 10:03 am Post subject: Motorglider wings

Making great progress after a delay over Christmas. Drag pin spacers fitted and glassed; Lift and Drag fittings going on in next two days then off to the paintshop.



Having a gliding instructor job, I have so much spare time with all this wind and rain in the UK, I must be one of the few with anything positive to come out of it.

 

The poor souls in Somerset are flooded out, the South Coast rail line to Cornwall is washed away and still it comes. No sign of help from the military.



  [quote][b]

iancook_1(at)hotmail.com
Guest

Posted: Thu Feb 06, 2014 2:00 pm Post subject: Motorglider wings

Alan,

     For  Info

 

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

Sent: 06 February 2014 18:03

To: Europa list

Subject: Motorglider wings

 

Making great progress after a delay over Christmas. Drag pin spacers fitted and glassed; Lift and Drag fittings going on in next two days then off to the paintshop.



Having a gliding instructor job, I have so much spare time with all this wind and rain in the UK, I must be one of the few with anything positive to come out of it.



The poor souls in Somerset are flooded out, the South Coast rail line to Cornwall is washed away and still it comes. No sign of help from the military.

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CBHI_LETTER_050214.pdf

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davidjoyce(at)doctors.org
Guest

Posted: Thu Feb 06, 2014 2:23 pm Post subject: Motorglider wings

Ian, I wonder whether a SmartASS would possibly be 

considered as an acceptable stall warner. It is in my 

experience a considerably more effective tool than the 

Europa stall warner, (having flown with both now for a 

couple of years), and much easier to fit. It has in 

addition a wheels up warning which sounds if you slow to 

approach speed without putting gear down. It is currently 

out of production (at Smart Avionics) but Mark Burton is 

hoping to launch a new improved version in the next few 

months.

Regards, David Joyce, G-XSDJ

On Thu, 6 Feb 2014 21:59:02 +0000

  Ian Cook <iancook_1(at)hotmail.com> wrote:

 	  Quote: 	
		   Alan,

 

     For  Info

 

 

 

From: owner-europa-list-server(at)matronics.com

 [mailto:owner-europa-list-server(at)matronics.com] On 

Behalf Of Alan Twigg

 Sent: 06 February 2014 18:03

 To: Europa list

 Subject: Motorglider wings

 

 

 

 Making great progress after a delay over Christmas. Drag 

pin spacers fitted

 and glassed; Lift and Drag fittings going on in next two 

days then off to

 the paintshop.

 

 Having a gliding instructor job, I have so much spare 

time with all this

 wind and rain in the UK, I must be one of the few with 

anything positive to

 come out of it.

 

 The poor souls in Somerset are flooded out, the South 

Coast rail line to

 Cornwall is washed away and still it comes. No sign of 

help from the

 military.

rparigoris

Joined: 24 Nov 2009
Posts: 791

Posted: Thu Feb 06, 2014 2:29 pm Post subject: Motorglider wings

Hi Ian 

 	Curiosity question, in the PDF you sent it mentions undercarriage bungee tension. If this refers to a Mono bungee tension, why exactly would there be a different need between long and short wings? 

 	Thx. Ron Parigoris 

 	     [quote][b]

grahamsingleton(at)btinte
Guest

Posted: Thu Feb 06, 2014 2:38 pm Post subject: Motorglider wings

David,

Not sure how SmartASS is installed, is it tee'd into the ASI?

Trouble with the ASI is it tells you what has happened anything up to 20 seconds after

the cause of the event (loss of speed) occured.

The stall warner gives you an instant warning of change of AoA, and that's what matters.

By the time the ASI has told you you're stalling, you already have. 

AoA tells you it's going to happen if you don't do something quickly, (get the nose down).

Graham





        From: David Joyce <davidjoyce(at)doctors.org.uk>

  To: europa-list(at)matronics.com 

 Sent: Thursday, 6 February 2014, 22:22

 Subject: Re: Motorglider wings

  

 

--> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>



Ian, I wonder whether a SmartASS would possibly be considered as an acceptable stall warner. It is in my experience a considerably more effective tool than the Europa stall warner, (having flown with both now for a couple of years), and much easier to fit. It has in addition a wheels up warning which sounds if you slow to approach speed without putting gear down. It is currently out of production (at Smart Avionics) but Mark Burton is hoping to launch a new  improved version in the next few months.

Regards, David Joyce, G-XSDJ

On Thu, 6 Feb 2014 21:59:02 +0000

 Ian Cook <iancook_1(at)hotmail.com (iancook_1(at)hotmail.com)> wrote:

 	  Quote: 	
		   Alan,

 

     For  Info

 

 

 

 From: owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com)

 [mailto:owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com)] On Behalf Of Alan Twigg

 Sent: 06 February 2014 18:03

 To: Europa list

 Subject: Motorglider wings

 

 

 

 Making great progress after a delay over Christmas. Drag pin spacers fitted

 and glassed; Lift and Drag fittings  going on in next two days then off to

 the paintshop.

 

 Having a gliding instructor job, I have so much spare time with all this

 wind and rain in the UK, I must be one of the few with anything positive to

 come out of it.

 

 The poor souls in Somerset are flooded out, the South Coast rail line to

 Cornwall is washed away and still it comes. No sign of help from the

 military.

&g========================http://forums.matronics                    &nbsptronics.com/contribution" target="_blank">http://www.matronics.com/contri================
	


 

  

  

 [quote][b]

davidjoyce(at)doctors.org
Guest

Posted: Thu Feb 06, 2014 3:19 pm Post subject: Motorglider wings

Graham, It is teed into the pitot and static airlines but 

calculates speed electronically and has built in 

accelerometers so that it compensates for g and 

effectively gives Angle of Attack related warnings. It has 

two modes with a female voice through your headset: 

firstly it/she will just tell you your airspeed at 

intervals (I rarely use that mode) but more importantly it 

acts as a speed director  in approach or take off mode. 

Once settled on your approach you press a button for a 

couple of seconds and she says Chosen speed is 60kts (or 

whatever). Then if you stay within a few percent of that 

she says 'Speed good' in a calm voice at intervals. As you 

slow down she has three messages in progressively less 

calm voice: 'Speed slow', 'Speed very slow'; and Speed 

very slow preceded by a loud gong. Quite impossible to 

ignore. Speeding up going away from the circuit she goes 

to sleep but wakes up automatically when you get within a 

few percent of your previously chosen approach speed, 

which remains set unless you change it. It is a brilliant 

piece of kit, designed as a life saving tool for 

emergencies like EFATOs when the most experienced pilots 

will still sometimes find themselves ignoring speed 

control and falling out of the sky. But quite 

coincidentally it is very much more effective than any 

stall warner I have flown with. My Europa one doesn't make 

much noise - a problem for a deaf old fart with expensive 

modern headset, and on top of that it sounds for an 

appreciable part of take off and landing runs, so I am 

'trained' to ignore it!

Regards, David

On Thu, 6 Feb 2014 22:34:48 +0000 (GMT)

  GRAHAM SINGLETON <grahamsingleton(at)btinternet.com> wrote:

 	  Quote: 	
		   David,

 Not sure how SmartASS is installed, is it tee'd into the 

ASI?

 Trouble with the ASI is it tells you what has happened 

anything up to 20 seconds after

 the cause of the event (loss of speed) occured.

 The stall warner gives you an instant warning of change 

of AoA, and that's what matters.

 By the time the ASI has told you you're stalling, you 

already have. 

 AoA tells you it's going to happen if you don't do 

something quickly, (get the nose down).

 Graham

 

 

 

 

 ________________________________

 From: David Joyce <davidjoyce(at)doctors.org.uk>

 To: europa-list(at)matronics.com 

 Sent: Thursday, 6 February 2014, 22:22

 Subject: Re: Motorglider wings

 

 

 

<davidjoyce(at)doctors.org.uk>

 

 Ian, I wonder whether a SmartASS would possibly be 

considered as an acceptable stall warner. It is in my 

experience a considerably more effective tool than the 

Europa stall warner, (having flown with both now for a 

couple of years), and much easier to fit. It has in 

addition a wheels up warning which sounds if you slow to 

approach speed without putting gear down. It is currently 

out of production (at Smart Avionics) but Mark Burton is 

hoping to launch a new improved version in the next few 

months.

 Regards, David Joyce, G-XSDJ

 

 

 On Thu, 6 Feb 2014 21:59:02 +0000

 Ian Cook <iancook_1(at)hotmail.com> wrote:

> Alan,

> 

>     For  Info

> 

> 

> 

> From: owner-europa-list-server(at)matronics.com

> [mailto:owner-europa-list-server(at)matronics.com] On 

>Behalf Of Alan Twigg

> Sent: 06 February 2014 18:03

> To: Europa list

> Subject: Motorglider wings

> 

> 

> 

> Making great progress after a delay over Christmas. Drag 

>pin spacers fitted

> and glassed; Lift and Drag fittings going on in next two 

>days then off to

> the paintshop.

> 

> Having a gliding instructor job, I have so much spare 

>time with all this

> wind and rain in the UK, I must be one of the few with 

>anything positive to

> come out of it.

> 

> The poor souls in Somerset are flooded out, the South 

>Coast rail line to

> Cornwall is washed away and still it c==============

grahamsingleton(at)btinte
Guest

Posted: Thu Feb 06, 2014 4:44 pm Post subject: Motorglider wings

David

certainly sounds very cleverly designed. I agree with your point about stall warner being too 

ready to cry wolf. My preference would be proper AoA display with voice warning. Then you have no time delay

between event (AoA change) and warning.

Graham



        From: David Joyce <davidjoyce(at)doctors.org.uk>

 To: europa-list(at)matronics.com 

 Sent: Thursday, 6 February 2014, 23:19

 Subject: Re: Motorglider wings

  

 

--> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>

. But quite coincidentally it is very much more effective than any stall warner I have flown with. My Europa one doesn't make much noise - a problem for a deaf old fart with expensive modern headset, and on top of that it sounds for an appreciable part of take off and landing runs, so I am 'trained' to ignore it!

Regards, David

On Thu, 6 Feb 2014 22:34:48 +0000 (GMT)

 

 

 

  

 [quote][b]

churchy

Joined: 04 Nov 2011
Posts: 48

Posted: Thu Feb 06, 2014 11:40 pm Post subject: Motorglider wings

Ian



Thanks for sharing this update.  Noting the shortfall on the minimum sink rate during Ivan Shaw's test flight - is CBHI fitted with a feathering prop and was that used for the flight test?



Rgds

Richard



Sent from my iPad



[quote] On 6 Feb 2014, at 21:59, Ian Cook <iancook_1(at)hotmail.com> wrote:

 

 Alan,

      For  Info

  

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

 Sent: 06 February 2014 18:03

 To: Europa list

 Subject: Motorglider wings

  

 Making great progress after a delay over Christmas. Drag pin spacers fitted and glassed; Lift and Drag fittings going on in next two days then off to the paintshop.

 Having a gliding instructor job, I have so much spare time with all this wind and rain in the UK, I must be one of the few with anything positive to come out of it.

 The poor souls in Somerset are flooded out, the South Coast rail line to Cornwall is washed away and still it comes. No sign of help from the military

alan.twigg775(at)gmail.co
Guest

Posted: Fri Feb 07, 2014 12:06 am Post subject: Motorglider wings

Thanks Ian, moats interesting.

I have fitted the Europa supplied Stall Warner.

I have fitted an undercarriage up Warner but was thinking of including an air switch but since the Duo simply has a horn if at brakes are open with undercarriage up, I will do the same on the Europa.

I have installed a pulley under the Airbrake torque tube to clear the Rudder Cable.

I intend to put wheels in the wing tips but need to establish Aileron movement to fit wheels large enough to clear the full deflection case.

Thanks for the update.

Alan



Sent from my iPhone



[quote] On 6 Feb 2014, at 21:59, Ian Cook <iancook_1(at)hotmail.com> wrote:

 

 Alan,

      For  Info

  

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

 Sent: 06 February 2014 18:03

 To: Europa list

 Subject: Motorglider wings

  

 Making great progress after a delay over Christmas. Drag pin spacers fitted and glassed; Lift and Drag fittings going on in next two days then off to the paintshop.

 Having a gliding instructor job, I have so much spare time with all this wind and rain in the UK, I must be one of the few with anything positive to come out of it.

 The poor souls in Somerset are flooded out, the South Coast rail line to Cornwall is washed away and still it comes. No sign of help from the military

davidjoyce(at)doctors.org
Guest

Posted: Fri Feb 07, 2014 2:12 am Post subject: Motorglider wings

Graham, It isn't clear to me that a digital ASI would have 

the same delays as a mechanical one, butin any case the 

beauty of the SmartASS is that it starts to warn you that 

your speed is decaying way before you are anywhere mear 

falling out of the sky, and effectively keeps you very 

close to whatever you have chosen as your safe speed for 

that phase of flight. It is no more possible to ignore the 

escalating warnings, than it would be to ignore your wife 

had she caught youin some serious sin of ommission or 

worse! Regards, David



On Fri, 7 Feb 2014 00:43:45 +0000 (GMT)

  GRAHAM SINGLETON <grahamsingleton(at)btinternet.com> wrote:

 	  Quote: 	
		   David

 certainly sounds very cleverly designed. I agree with 

your point about stall warner being too 

 ready to cry wolf. My preference would be proper AoA 

display with voice warning. Then you have no time delay

 between event (AoA change) and warning.

 Graham

 

 

 

 

 

 ________________________________

 From: David Joyce <davidjoyce(at)doctors.org.uk>

 To: europa-list(at)matronics.com 

 Sent: Thursday, 6 February 2014, 23:19

 Subject: Re: Motorglider wings

 

 

 

<davidjoyce(at)doctors.org.uk>

 

 

 . But quite coincidentally it is very much more 

effective than any stall warner I have flown with. My 

Europa one doesn't make much noise - a problem for a deaf 

old fart with expensive modern headset, and on top of 

that it sounds for an appreciable part of take off and 

landing runs, so I am 'trained' to ignore it!

 Regards, David

 On Thu, 6 Feb 2014 22:34:48 +0000 (GMT)

grahamsingleton(at)btinte
Guest

Posted: Fri Feb 07, 2014 2:38 am Post subject: Motorglider wings

Pity I didn't have one back in March 2000!

Graham





        From: David Joyce <davidjoyce(at)doctors.org.uk>

 To: europa-list(at)matronics.com 

 Sent: Friday, 7 February 2014, 10:12

 Subject: Re: Motorglider wings

  

 

--> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>

Graham, It isn't clear to me that a digital ASI would have the same delays as a mechanical one, butin any case the beauty of the SmartASS is that it starts to warn you that your speed is decaying way before you are anywhere mear falling out of the sky, and effectively keeps you very close to whatever you have chosen as your safe speed for that phase of flight. It is no more possible to ignore the escalating warnings, than it would be to ignore your wife had she caught youin some serious sin of ommission or worse! Regards, David



On Fri, 7 Feb 2014 00:43:45 +0000 (GMT)

 GRAHAM SINGLETON <grahamsingleton(at)btinternet.com (grahamsingleton(at)btinternet.com)> wrote:

 	  Quote: 	
		   David

 certainly sounds very cleverly designed. I agree with your point about stall warner being too ready to cry wolf.  My preference would be proper AoA display with voice warning. Then you have no time delay

 between event (AoA change) and warning.

 Graham

 

 

 

 

 

 ________________________________

 From: David Joyce <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>

 To: europa-list(at)matronics.com (europa-list(at)matronics.com) Sent: Thursday, 6 February 2014, 23:19

 Subject: Re: Motorglider wings

 

 

 --> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>

 

 

 . But quite coincidentally it is very much more effective than any stall warner I have flown with. My Europa one doesn't make much  noise - a problem for a deaf old fart with expensive modern headset, and on top of that it sounds for an appreciable part of take off and landing runs, so I am 'trained' to ignore it!

 Regards, David

 On Thu, 6========================http://www.matronics.com/Navigator?EurSame great content also available nbsp;                 -Matt Dralle,tribution" target="_blank">http://www.matronics.com/contribution

_-===================================
	


 

 

  

 [quote][b]

iancook_1(at)hotmail.com
Guest

Posted: Fri Feb 07, 2014 4:46 am Post subject: Motorglider wings

It is fitted with a feathering AirMaster prop but no gliding measurements have ever been done on my aircraft.



Regard



Ian

Sent from my iPhone



[quote] On 7 Feb 2014, at 07:40, Sky Mail <richard.churchill-coleman(at)sky.com> wrote:

 

 Ian

 

 Thanks for sharing this update.  Noting the shortfall on the minimum sink rate during Ivan Shaw's test flight - is CBHI fitted with a feathering prop and was that used for the flight test?

 

 Rgds

 Richard

 

 Sent from my iPad

 

> On 6 Feb 2014, at 21:59, Ian Cook <iancook_1(at)hotmail.com> wrote:

> 

> Alan,

>      For  Info

>  

> From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Alan Twigg

> Sent: 06 February 2014 18:03

> To: Europa list

> Subject: Motorglider wings

>  

> Making great progress after a delay over Christmas. Drag pin spacers fitted and glassed; Lift and Drag fittings going on in next two days then off to the paintshop.

> Having a gliding instructor job, I have so much spare time with all this wind and rain in the UK, I must be one of the few with anything positive to come out of it.

> The poor souls in Somerset are flooded out, the South Coast rail line to Cornwall is washed away and still it comes. No sign of help from the military

churchy

Joined: 04 Nov 2011
Posts: 48

Posted: Fri Feb 07, 2014 5:48 am Post subject: Motorglider wings

Ian

Thanks - my reading of para71 of CS-22 is that the relevant sink measurement is to be performed in 'power off' mode which I assume provides for the prop to be feathered, if available as an option.  That means that there may well be scope to decrease drag, decrease sink rate and achieve SLMG certification under CS-22.  But from the LAA notes is seems that you are happy not to add that complication to your certification and happy to live with a "long wing" SEA classification.  My aim is to be able to maintain SLMG and SEA ratings on the same aircraft, so I may have to be the first to cross that bridge once the aircraft is complete, by demonstrating CS-22 compliance with a feathered prop (if it is achievable)?

Richard



Sent from my iPad



On 7 Feb 2014, at 12:45, Iancook <iancook_1(at)hotmail.com (iancook_1(at)hotmail.com)> wrote:

 	  Quote: 	
		  It is fitted with a feathering AirMaster prop but no gliding measurements have ever been done on my aircraft.

Regard

Ian

 	  Quote: 	
		  

	
	
 [quote][b]

peterz(at)zutrasoft.com
Guest

Posted: Fri Feb 07, 2014 6:06 am Post subject: Motorglider wings

On Fri, Feb 7, 2014 at 8:47 AM, Sky Mail <richard.churchill-coleman(at)sky.com (richard.churchill-coleman(at)sky.com)> wrote:

   	  Quote: 	
		  SLMG certification under CS-22 	




I'm curious as to what the min perf numbers are to meet CS-22,

  



Cheers and thx,

Pete

  [quote][b]

churchy

Joined: 04 Nov 2011
Posts: 48

Posted: Fri Feb 07, 2014 6:29 am Post subject: Motorglider wings

1.20 m/s sink for two seat aircraft and 1.0 m/s for a single seat aircraft.

Richard



Sent from my iPad



On 7 Feb 2014, at 14:04, Peter Zutrauen <peterz(at)zutrasoft.com (peterz(at)zutrasoft.com)> wrote:

[quote]

On Fri, Feb 7, 2014 at 8:47 AM, Sky Mail <richard.churchill-coleman(at)sky.com (richard.churchill-coleman(at)sky.com)> wrote:

   	  Quote: 	
		  SLMG certification under CS-22 	




I'm curious as to what the min perf numbers are to meet CS-22,

  



Cheers and thx,

Pete

   	  Quote: 	
		  

	
   

[b]

peterz(at)zutrasoft.com
Guest

Posted: Fri Feb 07, 2014 6:48 am Post subject: Motorglider wings

On Fri, Feb 7, 2014 at 9:29 AM, Sky Mail <richard.churchill-coleman(at)sky.com (richard.churchill-coleman(at)sky.com)> wrote:

   	  Quote: 	
		  1.20 m/s 	




hmmm..... pretty sure I saw less that 236ft/min during my Florida demo ship ride with the prop feathered (w/914, two up, 1/2 fuel, clear day).  What are MG flyers typically seeing?

  

Cheers & thx,

Pete

  [quote][b]

iancook_1(at)hotmail.com
Guest

Posted: Fri Feb 07, 2014 12:40 pm Post subject: Motorglider wings

Richard,

Â Â Â Â Â Â Â Â Â Â Â  My aim is to get it flying and then address the issues one by one. I do not think anybody has done comprehensive performance measurements as a glider. The weight increase is my most important issue.

 

Regards

 

Ian

 

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

Sent: 07 February 2014 13:48

To: europa-list(at)matronics.com

Subject: Re: Motorglider wings

 

Ian



 



Thanks - my reading of para71 of CS-22 is that the relevant sink measurement is to be performed in 'power off' mode which I assume provides for the prop to be feathered, if available as an option.  That means that there may well be scope to decrease drag, decrease sink rate and achieve SLMG certification under CS-22.  But from the LAA notes is seems that you are happy not to add that complication to your certification and happy to live with a "long wing" SEA classification.  My aim is to be able to maintain SLMG and SEA ratings on the same aircraft, so I may have to be the first to cross that bridge once the aircraft is complete, by demonstrating CS-22 compliance with a feathered prop (if it is achievable)?



 



Richard



Sent from my iPad

On 7 Feb 2014, at 12:45, Iancook <iancook_1(at)hotmail.com (iancook_1(at)hotmail.com)> wrote:

 	  Quote: 	
		  

It is fitted with a feathering AirMaster prop but no gliding measurements have ever been done on my aircraft.



 



Regard



 



Ian



 

 	  Quote: 	
		   	
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 [quote][b]

h&jeuropa

Joined: 07 Nov 2006
Posts: 645

Posted: Sat Feb 08, 2014 6:41 am Post subject: Re: Motorglider wings

It might be useful, as you work with LAA, to have a US FAA approved example of how to handle the issue of Motorglider or Airplane.  



Our Airworthiness Certificate states "Amateur Built Aircraft/Motor Glider" and our Operating Limitations reference our program letter in which we stated that 



"This aircraft is designed to be operated in two configurations as follows:

Aircraft Configuration, 27 ft wing span with flaps

Motor Glider Configuration, 47.5 ft wing span with air brakes



The pilot in command of this aircraft shall comply with the applicable sections of FAR Part 61 prior to operating the aircraft in any of the above referenced configurations."

We appreciate seeing the letter from Francis Donaldson addressing concerns about switching wings - good things to think about as we proceed with our glider wings.  Can anyone tell us what item 17 is about?  One issue not mentioned is that the flap actuation rod on a monowheel interferes with the Mod 78 enhanced spar, maybe no one in the UK with a mono is retrofitting glider wings yet?   



Jim & Heather Butcher

N241BW

iancook_1(at)hotmail.com
Guest

Posted: Sat Feb 08, 2014 1:23 pm Post subject: Motorglider wings

Hi Jim,

 	Mine is a mono with retro fit MG wings but not aware of foul you

describe. Still trying to find the details behind 17 myself.



Ian



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rparigoris

Joined: 24 Nov 2009
Posts: 791

Posted: Sat Feb 08, 2014 2:50 pm Post subject: Re: Motorglider wings

Hi Ian

"Mine is a mono with retro fit MG wings but not aware of foul you

describe."

The flap push-rod will not work with post mod 78 spars on a XS Mono.

I never looked close at a Classic Mono, but off the cuff think problem will be the same as XS.

You can't modify the push-rod to clear post Mod 78 spar, air-brake cable and pitch cross tube in both gear down and gear up positions. 

Options:

Install an electric flap motor, you could have flaps chase gear electrically.

Install a push-pull cable which was my choice.

Of course you can choose to not fly with short wings and remove flap push-rod.

Ron Parigoris

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