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staufferm
Joined: 16 Dec 2007
Posts: 34
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 Posted: Mon Oct 19, 2009 5:45 pm Post subject: Prop selection for Jabiru 3300 |
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Rich,
Somehow I missed your voice mail, it never showed up as a call - I got it
several days later. Hopefully Dana was able to answer your questions.
To answer your question here - I have a Sensenich wood W64KZ51. This was the
recommended prop when I first purchased my firewall forward over four years
ago. They've now switched to a W64ZK49. My first flight I saw 2700 rpm on
takeoff and climb out at 90mph. Today I was seeing about 2790-2800 at the
same climb out speed which is about right. Today was a cooler day in TN -
about 60 degrees this evening. Tonight I was able to get 3060 at WOT. That
may be a bit low. I'm still working out some jetting issues on the Bing, I'm
running fairly rich in both WOT and cruise. I recorded an hour flight
tonight in the GRT EFIS but shut the power off before I copied over to the
memory stick. DOH!!
Also, I have an earlier solid lifter engine - SN 845.
At 3060 I was indicating 140-143 mph. I say this with the caveat that I'm
still calibrating my ASI. I think it reads a bit high.
Hopefully this nice weather will hold out and I can fly again tomorrow
evening - and record the flight!
Give me a call when you get a chance.
Mark
601XL
Jabiru 3300
6.3 hours!
Hey folks!
After a long wait, i have a Jabiru 3300. Yeah!!
Now, I need to order my firewall forward kit and prop.
There are 3 options.
1) one for short field take off
2) one for traveling - Higher cruse speeds
3) something in the middle.
For those with the same engine, what did you choose an why?
Rich
Murfreesboro, TN
601XL
Hoping to fly by Spring 2011
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floyd wilkes
Joined: 11 Jun 2007
Posts: 39
Location: spring branch, tx
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| Posted: Mon Oct 19, 2009 6:23 pm Post subject: Prop selection for Jabiru 3300 |
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Mark,
If you are using the Zenith supplied pitot/static tubes, you will probably
find the indicated/calibrated are way off at higher speed.
My tests in knots were 107 KIAS=98 CAS 95 KIAS=88 KCAS 85KIAS=80 KCAS
75KIAS = 73 KCAS 65 KIAS = 65 KCAS.
By placing a small O-ring on the static port slightly behind the static port
holes, I was able to get the IAS to equal the CAS in the 100 knot range but
made the IAS about 10 knots less the CAS in the 40 knot range. It took
several flight adjusting the position of the O ring to make this happen.
Floyd Wilkes
601XL O-200
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Floyd Wilkes |
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