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

Posted: Sun Sep 23, 2007 2:31 am Post subject: Emailing: IMG_0410, IMG_0411

Hi! All

In part to be viewed in reply to Jos Okhuijsen's message re-Rotax 914

cooling . 

The message is ready to be sent with the following file or link

attachments:



IMG_0410 G-PTAG front view off centre port side new Rotax/Europa cowls

with modified Cooling air intakes.

IMG_0411 G-PTAG front view off centre starboard side new Rotax/Europa

Cowls with modified Cooling air intakes. 

Regards

Bob Harrison

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carl(at)flyers.freeserve.
Guest

Posted: Sun Sep 23, 2007 9:03 am Post subject: Emailing: IMG_0410, IMG_0411

Hi Bob,



I noticed your ac is fitted with the Woodcomp Scimitar blades.



What prompted your choice (presumably over the Airmaster) and how are you 

finding it. Is there any noticeable improvement in performance.

Are you using the Woodcomp or the Smart cotroller.



We are currently looking to fit a replacement prop and the scimitar blade is 

something of a rarity amongst Europas. In fact William Mills was the only 

other one I was aware of.



Carl Pattinson

G_LABS



PS: any problem with the PFA approving the installation.

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josok-e(at)ukolo.fi
Guest

Posted: Sun Sep 23, 2007 9:33 am Post subject: Emailing: IMG_0410, IMG_0411

Hi Carl,



Me too, Woodcomp wit scimitar blades and reverse, Smart Avionics controller. I like them both, and enjoy the money saved. The reverse is nice to generate surprise on faces, backing up into a parking space.  Have not tried reverse during roll-out yet. Only concrete landings so far, it could be handy on grass and will be handy on ice.



Since i have never flown with anything else, it's difficult to compare. Ivan Shaw found the prop smooth and silent running. He also was not sure about it's efficiency, but it was at engine run-in time, difficult to say. There is no vibration at all. It came assembled and balanced. The numbers are as William once published. At FL 125 the prop was maximum coarse, doing 135 knots indicated and 4800 on the controller. More throttle to climb a bit more resulted in more revs to my surprise. Maybe that's to be expected?



Regards,



Jos Okhuijsen

Visit -  www.EuropaOwners.org

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Mark Burton

Joined: 10 Jan 2006
Posts: 74

Posted: Sun Sep 23, 2007 10:41 am Post subject: Coarse limit (was Re: Emailing: IMG_0410, IMG_0411)

> At FL 125 the prop was maximum coarse ... More throttle to climb a bit more resulted in more revs to my surprise. Maybe that's to be expected? 



Well, yes, if the prop is already at maximum coarse, increasing the throttle will raise the RPM.



My own SR3000 does run out of coarse pitch in the cruise but that is due to the coarse limit limit (!) imposed by the PFA. Other regimes may well allow the prop to go coarser so it won't run out of pitch. A possible issue here is that I only have the baby motor (80hp) so the +ve ROC test in fully coarse is always going to be a bit of a struggle.



Apart from that annoyance, I find the SR3000 splendid. It's very smooth (in more ways than one), has fantastic leading edge protection and the carbon finish looks stunning.



Mark

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

Posted: Sun Sep 23, 2007 12:30 pm Post subject: Emailing: IMG_0410, IMG_0411

Hi! Carl

The only problems encountered at present is the 20 pages of test details

the PFA expects! If you don't remember to note "chapter and verse" when

doing the test it means doing it again. And I don't like flying with my

"head in the office"! Unable to make any pronouncements about

performance at present except with the turbo engaged the thrust is well

in excess of the MT /Jabiru range.( not proven by scientific means just

the "kick in the butt" experienced when the "taps are opened" on take

off or climb.)

I chose the Woodcomp on the basis of cost, locality for service, and

professionalism exhibited during a factory visit. The controller I have

in use is Mark Burton's Smart Avionics Controller which is working

flawlessly.

The prop. has feather facility (which I haven't used yet!) but I elected

not to have the reverse thrust capability (This is not on the top of the

PFA popularity list !) The MT was an excellent prop. for cooling on the

Jabiru but nevertheless was very expensive, and together with the

overhaul 72 month requirement and price made a change inevitable but my

mind was made up by wrecking it when my nose wheel yoke departed on

landing!



Regards

Bob Harrison G-PTAG



--

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carl(at)flyers.freeserve.
Guest

Posted: Sun Sep 23, 2007 12:42 pm Post subject: Emailing: IMG_0410, IMG_0411

We have a baby 912 also and are hoping it will help us get off the ground 

sooner.



At an frugal 13.5 litres per hour (110kts) we are not that keen to swap it 

for the 100hp version.



The lack of power on take off is our only gripe - in all other respects we 

are more than happy.



Where are you based - it would be interesting to compare the performance of 

our respective aircraft (assuming yours is a Classic monowheel).



Carl Pattinson

G-LABS



---

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Mark Burton

Joined: 10 Jan 2006
Posts: 74

Posted: Sun Sep 23, 2007 12:56 pm Post subject: Re: Emailing: IMG_0410, IMG_0411

Hi Carl,



Assuming it is I your message is directed at, I am based at Sleap (EGCV). 



My a/c is a tri-gear so we can't really directly compare them.



However, I have noticed that the SR3000 seems to perform noticeably better at low speed compared to the other props I have had so it may well provide the t/o performance you are looking for. I know that William (Mills) thought that the low speed performance was very good.



Hi Bob, what's the acceleration like on PTAG now?



Mark

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carl(at)flyers.freeserve.
Guest

Posted: Sun Sep 23, 2007 2:02 pm Post subject: Emailing: IMG_0410, IMG_0411

Yes, Mark I was referring to your posting.



One thing I hear again and again (well I heard it from William first) is how 

smooth the prop runs.



I never felt the Warp prop was noticeably rough but (having balanced the 

carbs and blades) always had the feeling it could be better.



It just feels "gravelly" at certain speeds but then maybe all props are 

prone to this.



Carl Pattinson

G-LABS



---

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