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Re trim with woodcomp 3000/3W

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graeme bird

Joined: 15 Jul 2010
Posts: 434

Posted: Sat Sep 15, 2012 7:23 am Post subject: Re trim with woodcomp 3000/3W

I have finally got G-umpy cleared by the LAA to fly with the new prop but with just me on board it seems to want to roll to the left when hands off. Could this be due to the wide blade creating more airflow round the fuselage. It was trimmed up ok on the warp drive fixed pitch and nothing has changed (I hope!). I can't quite get my head round which way the tab on the rudder should go.

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_________________
Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk

ivanshaw(at)btinternet.co
Guest

Posted: Sat Sep 15, 2012 10:18 am Post subject: Re trim with woodcomp 3000/3W

Use 'rudder' trim to fly 'ball centred' then 'aileron' trim to stop any

roll.



Regards 

Ivan



--

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davidjoyce(at)doctors.org
Guest

Posted: Sun Sep 16, 2012 2:19 am Post subject: Re trim with woodcomp 3000/3W

Graeme, I can't say I noticed any trim changes when I 

changed to an SR 3000, but thgen I was coming from a VP 

prop where possibly you were coming from a fixed pitch 

one. But the Europa is a sensitive craft - when trimmed 

and above the thermal layer, I find I can control 

ascent/descent like a weight shift microlight by bending 

or stretching my legs! And lateral trim is certainly 

different depending on having one up or two. No doubt you 

know that you can adjust lateral trim by fitting a wedge 

X-section strip under one or other aileron, but my advice 

if you are going to do any serious touring would be to fit 

a single axis autopilot. You can choose to do as much 

stick waggling as you like, but it will look after the 

most complex route if connected to the GPS, hold things 

whilst you refold your chart or find something in the 

back, save your life by keeping you on an even keel should 

you stray into or get forced into cloud, as well as look 

after lateral trim!

Regards, David



On Sat, 15 Sep 2012 08:23:08 -0700

  "graeme bird" <graeme(at)gdbmk.co.uk> wrote:

 	  Quote: 	
		   

<graeme(at)gdbmk.co.uk>

 

 I have finally got G-umpy cleared by the LAA to fly with 

the new prop but with just me on board it seems to want 

to roll to the left when hands off. Could this be due to 

the wide blade creating more airflow round the fuselage. 

It was trimmed up ok on the warp drive fixed pitch and 

nothing has changed (I hope!). I can't quite get my head 

round which way the tab on the rudder should go.

 

 --------

 Graeme Bird

 G-UMPY

 Mono Classic/XS FWFD 912ULS/Woodcomp 3000/W

 Newby: 35 hours  

 g(at)gdbmk.co.uk

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=383176#383176

 

 

 

 

 

 

 

Un/Subscription,

Forums!

Admin.

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Ivor Phillips

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

Posted: Sun Sep 16, 2012 2:46 am Post subject: Re trim with woodcomp 3000/3W

Hi Graeme

I have just changed my propeller from a woodcomp scimtar to a SR3000/W

and have found  that now in normal cruise i need a slight right rudder input to keep the slip ball balanced,

  This is because the new propeller is more efficient  i believe,

 

It also gives me a improve 3kts in the cruise, On a sustained full power climb to 5500

last week my oil/water temps remained within limits, Something i couldn't say for the scimitar blades,

 regards

Ivor

On 16 September 2012 11:18, David Joyce <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)> wrote:

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

  

 

 Graeme, I can't say I noticed any trim changes when I changed to an SR 3000, but thgen I was coming from a VP prop where possibly you were coming from a fixed pitch one. But the Europa is a sensitive craft - when trimmed and above the thermal layer, I find I can control ascent/descent like a weight shift microlight by bending or stretching my legs! And lateral trim is certainly different depending on having one up or two. No doubt you know that you can adjust lateral trim by fitting a wedge X-section strip under one or other aileron, but my advice if you are going to do any serious touring would be to fit a single axis autopilot. You can choose to do as much stick waggling as you like, but it will look after the most complex route if connected to the GPS, hold things whilst you refold your chart or find something in the back, save your life by keeping you on an even keel should you stray into or get forced into cloud, as well as look after lateral trim!

  Regards, David

 

 On Sat, 15 Sep 2012 08:23:08 -0700

  "graeme bird" <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)> wrote:

 

 	  Quote: 	
		   --> Europa-List message posted by: "graeme bird" <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)>

 

 I have finally got G-umpy cleared by the LAA to fly with the new prop but with just me on board it seems to want to roll to the left when hands off. Could this be due to the wide blade creating more airflow round the fuselage. It was trimmed up ok on the warp drive fixed pitch and nothing has changed (I hope!). I can't quite get my head round which way the tab on the rudder should go.

  

 --------

 Graeme Bird

 G-UMPY

 Mono Classic/XS FWFD 912ULS/Woodcomp 3000/W

 Newby: 35 hours  g(at)gdbmk.co.uk

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=383176#383176

 

 

 

 

 

 

 



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