Today's Message Index:
----------------------
1. 05:14 AM - Re: ROTAX914 pressure sensor 4mm PVC tube (h&jeuropa)
2. 05:28 AM - Re: Mono undercarriage lubrication? (h&jeuropa)
3. 08:40 AM - Re: ROTAX914 pressure sensor 4mm PVC tube (Robert Borger)
4. 01:20 PM - Re: Arplst PV50 - Last Stand... Sort of... (Ken Atkinson)
5. 01:50 PM - Landing a mono on 400m in the middle of Ukrainian winter (ploucandco)
6. 02:05 PM - Re: Arplst PV50 - Last Stand... Sort of... (GRAHAM SINGLETON)
7. 02:13 PM - Re: Mono undercarriage lubrication? (JonSmith)
8. 02:24 PM - Re: Landing a mono on 400m in the middle of Ukrainian winter (JonSmith)
9. 03:11 PM - Re: Landing a mono on 400m in the middle of Ukrainian winter (ploucandco)
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| Subject: | Re: ROTAX914 pressure sensor 4mm PVC tube |
Rotax sells this as a replacement part (P/N 860 660), but it is very expensive
and in the US few of the distributors have it in stock. There are suitable automotive
hoses available.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466042#466042
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| Subject: | Re: Mono undercarriage lubrication? |
Jon,
I was hoping Bud or Nev or Nigel would reply to this post as they have a lot of
experience. The manual doesn't provide much instruction about lubrication.
What we have found is that most moving parts require lubrication. We use a spray
lubricant purchased at a DIY store that supposedly leaves a teflon barrier
for most places including those swing arm bushes. We also use it on all hinges,
door mechanism, shoot bolts, rod ends and bearings (these last two probably
are unnecessary since they should be lubed and sealed for life). We use a heavy
anti seize paste on sliding connections, especially the torque tubes into
the tailplanes and the front and rear pins on the wings. We also lube all pip
pins with anti seize. It makes a mess but it is easy to disassemble next time!
We installed door locks and we lube them with lock lube, a graphite lube
available at DIY stores.
Hope this helps.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466043#466043
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| Subject: | Re: ROTAX914 pressure sensor 4mm PVC tube |
I=99ll bet you can find a suitable hose/tubing here:
https://www.mcmaster.com/#standard-plastic-and-rubber-tubing/=16bnwhx
<https://www.mcmaster.com/#standard-plastic-and-rubber-tubing/=16bnwhx>
if not at a good auto supply store.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (75 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Feb 11, 2017, at 3:59 PM, ploucandco <jacques@platisource.com> wrote:
<jacques@platisource.com>
Hello, I need to replace/reroute some hoses in my 914 firewall. And
looking where I can find a 4mm PVC tube for the 914 pressure sensor that
is supporting high temperature found in the firewall. This one needs to
end up near the air filter of the turbo.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466025#466025
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| Subject: | Re: Arplst PV50 - Last Stand... Sort of... |
Hi Jon,
If something is loose inside your PV50 you must dismantle it again and
investigate. The initial balancing, I believe, would have been achieved
by fitting appropiate weights into the centre of the blade roots.I doubt
that any of these would be loose but check!
I did find on my first annual service of my PV50 that the centre
triangular block was loose on the activator tube and the grub screw was
loose!
This year I carried out a static balance following the fitting of new
thrust bearings and bushes.I was surprised at the out of balance that I
had to counteract with 8 mm threaded weights fitted onto the six 8mm hub
assembly bolts. This seemed a suitable method of fitting balance weights
to me? How have you fitted any balance weights? My propeller/engine is
running pretty smoothly now but probably would benefit from dynamic
balancing.
I have a spare set of early PV50 Classic (shorter) 80hp narrow blades,
but they would need serious balancing to match a different hub. Each set
of blades is matched to fit each hub and also each blade must be fitted
in the correct position.
My details are on the members list if you want to contact me otherwise I
will look out for you at a fly-in for some intersting PV50 tales!
Ken Atkinson G-CEKV mono no 19
On 11/02/2017 17:56, italianjon wrote:
>
> Hi All,
>
> If you recall I posted about a year ago, relating to PV50 and some vibration
problems. Well, it has been an interesting year, and some stories which I won't
write on a public forum, but I might share over a beer at a fly-in. A lot of
the year has been a learning curve, and I used the time waiting for the PH-Reg
to come through, to experiment and learn more
>
> Today I was coming to the end of a careful adjustments on the propeller, but
still, alas, there is an imbalance. I'm getting about 0.25 IPS on the prop (attached
is the outcome of the spectrum), this is now the main and seemingly only
contributor to the vibration.
>
> I've managed to get all three blade-pitches to within 0.16 degres across all
three blades, and the tracking is less than 3 mm. The blades are quite firmly
seated now, after I have installed new plastic blocks. All of this has had no
real effect.
>
> Today was a very quiet day at the airfield. There was only myself and my "plane
work buddy". On one of the blades I heard a "tick", and on closer inspection
it is evident something is loose on the inside (One of the static balance weights,
I am assuming)
>
> Does anyone have any experience at all in setting the static weights on a PV50
blade? Is it possible without manufacturer support?
>
> Failing that, is there anyone with a spare blade that I could try in the position,
to close off this investigation?
>
> I know the engine is not contributing, as the latest spectrum shows nothing significant
at key engine frequencies, and in addition I have spectra from other
measurements with my aircraft and a Warpdrive installed which shows very good
vibration down at 0.08IPS.
>
> Cheers
>
> Jon
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=466013#466013
>
>
> Attachments:
>
> http://forums.matronics.com//files/screenshot_20170211_182509_207.png
>
>
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| Subject: | Landing a mono on 400m in the middle of Ukrainian winter |
https://www.youtube.com/watch?v=_ouYcfMC8D0
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466073#466073
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| Subject: | Re: Arplst PV50 - Last Stand... Sort of... |
Jon & KenI always used to start by balancing each blade separately on the b
ench.=C2- I built a simple jig having a knife edge fulcrum positioned at
the centre of the prop assembly, which supported the blade so that the root
of the blade was the correct distance from the centre/fulcrum and the=C2
- blade was supported somewhere about 75% blade diameter. there is a seco
nd fulcrum at about 60% of the span (not critical) where the load is measur
ed accurately, to within 1/2 a gram. This is the moment of the blade about
the centre of the prop. Each blade must have the same moment. Surprisingly
the actual weight of each blade might not be exactly the same, it's the mom
ent that is critical.
Now measure the moment of each blade and adjust by adding a small amount of
lead in the hole drilled down the blade from the root. The lead shot is se
cured with epoxy resin and you will find it is about 300mm out from the roo
t.I hope that's clear enough to understand, I learned this method from Jerr
y Davis who used to be the UK agent for Arplast.Graham
On Sunday, 12 February 2017, 21:21, Ken Atkinson <kennethatkinson178@bt
internet.com> wrote:
rnet.com>
Hi Jon,
If something is loose inside your PV50 you must dismantle it again and
investigate. The initial balancing, I believe, would have been achieved
by fitting appropiate weights into the centre of the blade roots.I doubt
that any of these would be loose but check!
I did find on my first annual service of my PV50 that the centre
triangular block was loose on the activator tube and the grub screw was
loose!
This year I carried out a static balance following the fitting of new
thrust bearings and bushes.I was surprised at the out of balance that I
had to counteract with 8 mm threaded weights fitted onto the six 8mm hub
assembly bolts. This seemed a suitable method of fitting balance weights
to me? How have you fitted any balance weights? My propeller/engine is
running pretty smoothly now but probably would benefit from dynamic
balancing.
I have a spare set of early PV50 Classic (shorter) 80hp narrow blades,
but they would need serious balancing to match a different hub. Each set
of blades is matched to fit each hub and also each blade must be fitted
in the correct position.
My details are on the members list if you want to contact me otherwise I
will look out for you at a fly-in for some intersting PV50 tales!
Ken Atkinson=C2- G-CEKV mono no 19
On 11/02/2017 17:56, italianjon wrote:
>
> Hi All,
>
> If you recall I posted about a year ago, relating to PV50 and some vibrat
ion problems. Well, it has been an interesting year, and some stories which
I won't write on a public forum, but I might share over a beer at a fly-in
. A lot of the year has been a learning curve, and I used the time waiting
for the PH-Reg to come through, to experiment and learn more
>
> Today I was coming to the end of a careful adjustments on the propeller,
but still, alas, there is an imbalance. I'm getting about 0.25 IPS on the p
rop (attached is the outcome of the spectrum), this is now the main and see
mingly only contributor to the vibration.
>
> I've managed to get all three blade-pitches to within 0.16 degres across
all three blades, and the tracking is less than 3 mm. The blades are quite
firmly seated now, after I have installed new plastic blocks. All of this h
as had no real effect.
>
> Today was a very quiet day at the airfield. There was only myself and my
"plane work buddy". On one of the blades I heard a "tick", and on closer in
spection it is evident something is loose on the inside (One of the static
balance weights, I am assuming)
>
> Does anyone have any experience at all in setting the static weights on a
PV50 blade? Is it possible without manufacturer support?
>
> Failing that, is there anyone with a spare blade that I could try in the
position, to close off this investigation?
>
> I know the engine is not contributing, as the latest spectrum shows nothi
ng significant at key engine frequencies, and in addition I have spectra fr
om other measurements with my aircraft and a Warpdrive installed which show
s very good vibration down at 0.08IPS.
>
> Cheers
>
> Jon
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=466013#466013
>
>
> Attachments:
>
> http://forums.matronics.com//files/screenshot_20170211_182509_207.png
>
>
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=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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| Subject: | Re: Mono undercarriage lubrication? |
Hi Jim,
Many thanks for your thoughts on this. I too like to keep everything well lubricated
where possible, just have never been too sure about the swinging arm bearings
and the shock absorber block oilite bushes! I think I remembered long
ago reading somewhere that the bushes were sort of self lubricating - but that
might well be rubbish - I just can't remember! I'll take your advice and spray
a bit of oil on them.
I trailer and rig each time so don't have the problem of wings/ tailplanes seizing
in position, I just (often) use regular grease for those parts which seems
to work well.
Thanks again, Jon
--------
G-TERN
Classic Mono
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466077#466077
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| Subject: | Re: Landing a mono on 400m in the middle of Ukrainian winter |
Mate, regardless of the subject of the video - which has great scenery by the way
- that 360 degree panoramic view is incredible. I've never seen anything like
it. How do you do that?
(I've just been sitting in the lounge with my iPad doing strange sort of pirouettes
on the settee watching it.......! :D)
Nice one!
--------
G-TERN
Classic Mono
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466079#466079
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| Subject: | Re: Landing a mono on 400m in the middle of Ukrainian winter |
just get you a https://www.360fly.com/
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=466086#466086
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