Hello Tim
Thanks, this is what I was after the only problem is that sadly for me
you are in NZ and I suppose governed by different regs!
Here in the UK we are subject to something called CS-VLA 925 (easily
googled) which makes minimum prop clearance demands.
However glad to hear that you are getting good results, what brand of
blades are you using?
Thanks
Mike
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of timward
Sent: 29 December 2021 10:45
Subject: Re: Europa-List: Re: Propeller Sizing
Hi Mike,
I have 64=9D prop blades on my Mono Wheel Classic #292. Prop
clearance is not a problem.
With the Airmaster CSU, Rotax 912ULS 100hp, it provides excellent
performance.
Upgraded to 64=9D from 62=9D after a prop strike, on
recommendation from Airmaster.
Cheers,
Tim
Sent from my iPad
Tim Ward
12 Waiwetu Street,
Fendalton,
Christchurch, 8052
New Zealand.
ward.t@xtra.co.nz
021 0640221
On 29/12/2021, at 11:29 PM, Mike <mike@nyumba.co.uk> wrote:
Thanks Bud for your usual excellent reply.
I have been in contact with Dirk who has indeed suggested a replacement
blade of 64" and been most helpful but the issue remains, can I fit a
64" to
a classic mono. The LAA have provided me with a spreadsheet of
calculations
to determine prop tip clearance at Max AUW which I will carry out but
they
were unable to find out easily if any other classics were operating with
a
64" prop so this is why I asked the community if anyone was operating
with
one.
Thanks for the pointer to your website I will certainly have a look.
Thanks
Mike
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of
budyerly@msn.com
Sent: 28 December 2021 16:44
Subject: Europa-List: Re: Propeller Sizing
Mike,
My website has how to select a prop for your Rotax.
The 62 inch Warp Drive Taper blade is fine for most 80HP Rotax
powerplants.
The Rotax 912ULS 100HP has significantly more torque and the 62 inch
tapered
blade is not very efficient. My US folks were very disapointed with
trying
to use this short tapered blade on the 912ULS in both the Airmaster and
the
fixed pitch versions.
The blade angle will be quite high and takeoff will be shortened, climb
will
be less and the cruise will be about 5 knots slower. The 80HP Rotax
won't
spin a wide chord 64 inch without lugging the engine down. There is
just
not enough torque. The tip at takeoff is not able to bite for good
performance.
The LAA recommendations is for the Warp Drive Standard (wide chord)
blade of
64 inch for the Europa (which limits the length for the airframe to 64
inches) and was the standard Airmaster for a number of years. The 100HP
Rotax has the higher torque and can spin the wider and longer props with
authority.
Also available for the cost of a blade change is the Sensenich high
speed
blades. Whirlwind has a blade but due to Covid lockdowns in California
lead
time is many months. Sensenich and Warp Drive are made in free States
so
production and labor issues are not a major problem for delivery at this
time. Airmaster will build you up a set of blades and ferrules ready to
mount. It will cost you but it is worth it.
Contact: Dirk Oyen
Oyen CTR (Europe Sales and Service)
Hemelrijk 61
Heusen-Zolder
Limburg 3550
Belgium
E: dirk.oyen1@telenet.be
M: +32 477 25 80 28
Website: www.propellor.com your European Airmaster Dealer. He has the
experience you will need to draw on in the UK (See the Airmaster
Contacts
section for resellers.)
I have been happy with all the US manufactured blades in the Airmaster
Hub.
And NO, you personally can't change the blades yourself.
Best Regards,
Bud Yerly
US Airmaster Dealer
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505507#505507
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