raimo.toivio(at)rwm.fi
Guest
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 Posted: Mon Dec 19, 2011 10:27 am Post subject: Heavy In-flight Vibration Riddle /The Solution /The Winner(s |
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Some of you
may remember this topic and The Contest
“What is the jury´s decision? All of you (who gave a guess or more) will get a little surprising shipment from Finland: just let me know your exact address info details direct to info(at)rwm.fi (info(at)rwm.fi)”
I got in time only three addresses and so The Winners are:
Trev Pond (G-LINN) from UK
Karel Vranken (F-PKRL) from Belgium
Tim Ward (ZK-TIM) with all his daughters from New Zealand
Congratulations!
What they will get?
I am happy to say I have today made three equal shipments: all of them included no more or less than
- an aviation style belt with an unic hologram engraving “Europa Aircraft logo” with personal register # G-LINN, F-PKRL and ZK-TIM”
(Karel will get Khaki coloured belt because that match well to his Europa painting scheme, Trev and Tim will get Marine Blue coloured belts because that colour is a vital part of their nationality)
- an English version of the book “Finland for tourists” packed full of nice pictures from our country
- a book “Xenophobe´s guide to The Finns”
and
- a sheet of very best available Finnish chocolate.
I hope a safe arrival for these shipments.
The rest of you – look at the attached photo - now it is a good time to start to envy!
I would like to thank all of you for taking part to this topic and competition. It was interesting to see how many reasons there could be to get some Heavy In-flight Vibration. When (?) I have some spare time, I will make a complete list for possible reasons and share it to you.
Season´s Greetings!
Now you all know Santa lives really in Finland!
Cheers, Raimo Toivio
[img]cid:7FF3C106F01247A9B7F1AB5FD80E84FA(at)Asus[/img]
Europa XS Mono OH-XRT #417
Updated flight hours /landings: 258,15 /466
37500 Lempaala
FINLAND
p +358-3-3753 777
f +358-3-3753 100
toivio(at)fly.to (toivio(at)fly.to)
www.rwm.fi
From: Raimo Toivio (raimo.toivio(at)rwm.fi)
Sent: Sunday, October 09, 2011 10:55 PM
To: europa-list(at)matronics.com (europa-list(at)matronics.com)
Subject: Re: Heavy In-flight Vibration Riddle /The Solution /The Winner(s)
All who like to know what was it
***
One week ago on Sunday I looked, found and solved the source for vibration as follows:
First I checked the overall appearance of the plane – good
Then I took the prop for a closer check and drove the blades to their finest positions – all very exactly 17 degrees (measured from the tip end).
Then I drove them to the coarsest position – all were again same and 29,5 degrees,
Opened the cowlings – just normal inside.
Took off all the sparking plugs – one until another were just great – colour like mild milk coffee...
- until I took of the last (!) one: that was #3 (stbd side, rearmost) and lower one: it was sky blue (a colour like RAL 5015 or Pantone 2925C).
It /they have been on service 57 hrs only.
Attached a pic of it (it was not so easy to photo it to get a correct colour!).
I replaced all the plugs for new. That was it. As I wrote earlier – My Europa was after service just great.
***
My mistake: I did not try during the flight one week ago the magnetos A and B alone. I could not imagine that would be a solution for a smoother ride. You remember – one power selection and one rpm-selection only together was acceptable to continue the flight with a reasonable vibra only.
***
How could loosing only one plug to make such a hard situation? My only guess is that it was detonation; below and over certain rpm´s and map´s the engine was very unhappy. Why so – I am sure someone of you can explain it. Certainly the plug has been very hot.
***
I consulted a Finnish Rotax agent: during a last decade he remembered only another case loosing a spark plug from Rotax. That case the spark was only dead and no noticeable problems during the flight. His ten years are equal of well over 200.000 hrs of Rotax flight time (200 planes x 100 hrs /year x 10 year).
***
Dear competitors: I got several answers. Some of them are a bit funny but all are valuable. Thanks for great inputs. All of you, also those privat answers.
Only one of you guessed the right answer. That was Bob Yearly by writing as follows, that was a great list for all of
us, thank you.
Many things to check.
Carbs:
Check for a vacuum leak or a carb intake or carb to manifold leak. Especially since it seems to have just started and abates at low power setting.
Check carb balance.
Engine Electrics:
First check ignition A and B separate.
Second check plugs, check coil. (one bad coil really shakes also)
Pull plugs and look for differences.
Fuel :
Check carb float bowls for dirt.
Check fuel pressure regulator for 914
Finally your fuel pump delivery pressure.
Exhaust:
Check no exhaust failure. Look at the entire exhaust for soot, looseness or failures.
Regards,
Bud
***
Problems: The Rules: one single guess per person, please.
So, Bud is not a winner but that is not a problem for him I am sure.
What is the jury´s decision? All of you (who gave a guess or more) will get a little surprising shipment from Finland: just let me know your exact address info details direct to
info(at)rwm.fi (info(at)rwm.fi)
Also the daughters.
Thanks,
Terveisin,
[img]cid:BCA6DF51D3B745D49AC6908D76C0ED07(at)Asus[/img]
Raimo Toivio
RWM-SYSTEMS
"älykästä informaatiotekniikkaa vuodesta 1980"
[img]cid:83BF76A5DFFC47CE97438A2B819AADAE(at)Asus[/img]
37500 Lempäälä
FINLAND
p. 03 - 3753 777
f. 03 - 3753 100
www.rwm.fi
info(at)rwm.fi (info(at)rwm.fi)
From: Bud Yerly (budyerly(at)msn.com)
Sent: Wednesday, October 05, 2011 9:15 PM
To: europa-list(at)matronics.com (europa-list(at)matronics.com)
Subject: Re: Heavy In-flight Vibration Riddle
Many things to check.
Carbs:
Check for a vacuum leak or a carb intake or carb to manifold leak. Especially since it seems to have just started and abates at low power setting.
Check carb balance.
Engine Electrics:
First check ignition A and B separate.
Second check plugs, check coil. (one bad coil really shakes also)
Pull plugs and look for differences.
Fuel :
Check carb float bowls for dirt.
Check fuel pressure regulator for 914
Finally your fuel pump delivery pressure.
Exhaust:
Check no exhaust failure. Look at the entire exhaust for soot, looseness or failures.
Regards,
Bud
---
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