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lvuman(at)gmail.com Guest
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Posted: Sat Aug 23, 2008 6:02 pm Post subject: 701 & the Jab3300 |
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This might be a good time to jump in here as there seems to be a lot of
discussion as to whether the Jabiru 3300 is an adequate engine for the 701.
I have the first or close to the first 701 with a Jabiru 3300. It was the prototype plane used by Pete at JabiruUSA to fit a firewall forward package using the 701. A proven 601 cowling was modified for the purpose and more recently was modified again to address cooling issues. Although the original cowling worked well at temperatures below 75 degrees, cooling issues, specifically CHT's, were too high while climbing for any length of time. I finally reglassed the cowling and the cooling ducts to allow 40% more inlet air and opened the bottom of the cowling to allow the correct differential pressure. The modification worked wonderfully. I no longer have any cooling issues although I haven't flown "Buzz" in temps greater than 95 degrees. I believe Pete at JabiruUSA has since modified his firewall forward package to change his cowling and inlet ducts to approximate my installation. Should be great.
I tried several different propellers (thanks to the helpful staff at JabUSA) and have found the correct combination for me. In this process, Pete sent me a 68" prop which I loved but it was tested with the original cowling and the temps were even slightly higher due to flatness of the blades close the inlet openings. Would be fun to try it now with the improved cowling but am very satisfied with my 64" prop. I can't remember the correct pitch, etc, but can supply that information when I get back to Arizona.
The performance has been very acceptable, however it's hard to judge the difference in a Rotax powered 701 as I have never owned or flown a Rotax powered 701. I've owned and flew a 701 with a Jab 2200 for about 70 hours and Buzz for about 65 hours. Additionally, Buzz has been modified with PegaStol wings (retractable slats), extended gear, etc., making it slightly heavy although the wing installation increased my gross weight to 1,200lbs. It does get off very quickly and climbs with two people at about 1,000' per minute. Works for me.
I really like the 3300 Jab engine. I also liked the 2200. I think the 2200 powered 701 got of the ground as fast or shorter than the 3300 but Buzz is at least 100 lbs heavier. I would have used another 2200 but the climb was only about 400 ft pre/min and needed more for Alaska and Colorado. Jabs start smoothly and easily, and most of all, hardly any vibration in cruise (3300). I cruise at about 85 with less than 4 gallons per/hour at about 2500RPM but can easily push it up to 100 if I want to pay for the gas. With the new hydraulic lifters, there is very little maintenance, single carb (which is a big plus), and easy to do maintenance if needed.
I removed the wings and stored it in my garage while I went to Alaska and Colorado for the summer. I plan to put the wings back on shortly and hopefully, fly it to the Copperstate Fly-in in Arizona the last part of October. See: http://www.copperstate.org/
Hope this answers a few of the questions. For those of you interested, I have a few pictures posted at: http://www.flickr.com/photos/22918119(at)N08/
James Sagerser
Chandler, Arizona
[quote][b]
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craig(at)craigandjean.com Guest
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Posted: Sat Aug 23, 2008 7:14 pm Post subject: 701 & the Jab3300 |
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[quote]James, how did you do the angle mount for your Enigma EFIS in Buzz? And how do you like the Enigma? -- Craig [b]
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alaskajim(at)cox.net Guest
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Posted: Sat Aug 23, 2008 7:23 pm Post subject: 701 & the Jab3300 |
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I cut the angles out of 3/8" hardwood, painted them black and glued to the side of the Enigma. �Worked great. �Jim
On Aug 23, 2008, at 9:13 PM, Craig Payne wrote:
Quote: | Quote: | James, how did you do the angle mount for your Enigma EFIS in Buzz?�And how do you like the Enigma?�-- Craig�http://www.matronics.com/Navigator?Zenith701801-List
blue; text-decoration: underline; ">http://forums.matronics.com
style="color: blue; text-decoration: underline; ">http://www.matronics.com/contribution
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[quote][b]
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flicka750
Joined: 02 Aug 2008 Posts: 31
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Posted: Mon Aug 25, 2008 7:43 am Post subject: Re: 701 & the Jab3300 |
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I notice that when you google 'jabiru engine failure', you get enough reports to write a book. Yet when you google 'rotax engine failure' you just get Rotax lit on preventing such. It seems there are lots of Jabiru engine failures in the early years. Does anyone know if these issues have been resolved??
[quote="lvuman(at)gmail.com"]This might be a good time to jump in here as there seems to be a lot of
discussion as to whether the Jabiru 3300 is an adequate engine for the 701.
I have the first or close to the first 701 with a Jabiru 3300. It was the prototype plane used by Pete at JabiruUSA to fit a firewall forward package using the 701. A proven 601 cowling was modified for the purpose and more recently was modified again to address cooling issues. Although the original cowling worked well at temperatures below 75 degrees, cooling issues, specifically CHT's, were too high while climbing for any length of time. I finally reglassed the cowling and the cooling ducts to allow 40% more inlet air and opened the bottom of the cowling to allow the correct differential pressure. The modification worked wonderfully. I no longer have any cooling issues although I haven't flown "Buzz" in temps greater than 95 degrees. I believe Pete at JabiruUSA has since modified his firewall forward package to change his cowling and inlet ducts to approximate my installation. Should be great.
I tried several different propellers (thanks to the helpful staff at JabUSA) and have found the correct combination for me. In this process, Pete sent me a 68" prop which I loved but it was tested with the original cowling and the temps were even slightly higher due to flatness of the blades close the inlet openings. Would be fun to try it now with the improved cowling but am very satisfied with my 64" prop. I can't remember the correct pitch, etc, but can supply that information when I get back to Arizona.
The performance has been very acceptable, however it's hard to judge the difference in a Rotax powered 701 as I have never owned or flown a Rotax powered 701. I've owned and flew a 701 with a Jab 2200 for about 70 hours and Buzz for about 65 hours. Additionally, Buzz has been modified with PegaStol wings (retractable slats), extended gear, etc., making it slightly heavy although the wing installation increased my gross weight to 1,200lbs. It does get off very quickly and climbs with two people at about 1,000' per minute. Works for me.
I really like the 3300 Jab engine. I also liked the 2200. I think the 2200 powered 701 got of the ground as fast or shorter than the 3300 but Buzz is at least 100 lbs heavier. I would have used another 2200 but the climb was only about 400 ft pre/min and needed more for Alaska and Colorado. Jabs start smoothly and easily, and most of all, hardly any vibration in cruise (3300). I cruise at about 85 with less than 4 gallons per/hour at about 2500RPM but can easily push it up to 100 if I want to pay for the gas. With the new hydraulic lifters, there is very little maintenance, single carb (which is a big plus), and easy to do maintenance if needed.
I removed the wings and stored it in my garage while I went to Alaska and Colorado for the summer. I plan to put the wings back on shortly and hopefully, fly it to the Copperstate Fly-in in Arizona the last part of October. See: http://www.copperstate.org/
Hope this answers a few of the questions. For those of you interested, I have a few pictures posted at: http://www.flickr.com/photos/22918119(at)N08/
James Sagerser
Chandler, Arizona
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_________________ flicka750(AT)gmail
EINSTEIN:"Common sense is the accumulated prejudices before the age of 18" - Out of My Later Years
TWAIN: "Intercourse is life's most over-rated pleasure, defecation is life's most under-rated pleasure" - Letter's From Earth |
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alaskajim(at)cox.net Guest
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Posted: Mon Aug 25, 2008 9:53 am Post subject: 701 & the Jab3300 |
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No sure. Might ask Pete at JabiruUSA or Jim in California. They
should be able to give you an accurate answer. James
On Aug 25, 2008, at 9:43 AM, flicka750 wrote:
Quote: |
<flicka750(at)gmail.com>
I notice that when you google 'jabiru engine failure', you get
enough reports to write a book. Yet when you google 'rotax engine
failure' you just get Rotax lit on preventing such. It seems there
are lots of Jabiru engine failures in the early years. Does anyone
know if these issues have been resolved??
[quote="lvuman(at)gmail.com"]This might be a good time to jump in
here as there seems to be a lot of
discussion as to whether the Jabiru 3300 is an adequate engine for
the 701.
I have the first or close to the first 701 with a Jabiru 3300. It
was the prototype plane used by Pete at JabiruUSA to fit a firewall
forward package using the 701. A proven 601 cowling was modified
for the purpose and more recently was modified again to address
cooling issues. Although the original cowling worked well at
temperatures below 75 degrees, cooling issues, specifically CHT's,
were too high while climbing for any length of time. I finally
reglassed the cowling and the cooling ducts to allow 40% more inlet
air and opened the bottom of the cowling to allow the correct
differential pressure. The modification worked wonderfully. I no
longer have any cooling issues although I haven't flown "Buzz" in
temps greater than 95 degrees. I believe Pete at JabiruUSA has
since modified his firewall forward package to change his cowling
and inlet ducts to approximate my installation. Should be great.
I tried several different propellers (thanks to the helpful staff
at JabUSA) and have found the correct combination for me. In this
process, Pete sent me a 68" prop which I loved but it was tested
with the original cowling and the temps were even slightly higher
due to flatness of the blades close the inlet openings. Would be
fun to try it now with the improved cowling but am very satisfied
with my 64" prop. I can't remember the correct pitch, etc, but can
supply that information when I get back to Arizona.
The performance has been very acceptable, however it's hard to
judge the difference in a Rotax powered 701 as I have never owned
or flown a Rotax powered 701. I've owned and flew a 701 with a Jab
2200 for about 70 hours and Buzz for about 65 hours. Additionally,
Buzz has been modified with PegaStol wings (retractable slats),
extended gear, etc., making it slightly heavy although the wing
installation increased my gross weight to 1,200lbs. It does get off
very quickly and climbs with two people at about 1,000' per
minute. Works for me.
I really like the 3300 Jab engine. I also liked the 2200. I
think the 2200 powered 701 got of the ground as fast or shorter
than the 3300 but Buzz is at least 100 lbs heavier. I would have
used another 2200 but the climb was only about 400 ft pre/min and
needed more for Alaska and Colorado. Jabs start smoothly and
easily, and most of all, hardly any vibration in cruise (3300). I
cruise at about 85 with less than 4 gallons per/hour at about
2500RPM but can easily push it up to 100 if I want to pay for the
gas. With the new hydraulic lifters, there is very little
maintenance, single carb (which is a big plus), and easy to do
maintenance if needed.
I removed the wings and stored it in my garage while I went to
Alaska and Colorado for the summer. I plan to put the wings back
on shortly and hopefully, fly it to the Copperstate Fly-in in
Arizona the last part of October. See: http://
www.copperstate.org/ (http://www.copperstate.org/)
Hope this answers a few of the questions. For those of you
interested, I have a few pictures posted at: http://
www.flickr.com/photos/22918119(at)N08/ (http://www.flickr.com/photos/
22918119(at)N08/)
James Sagerser
Chandler, Arizona
> [b]
--------
flicka750(AT)gmail
EINSTEIN:"Common sense is the accumulated prejudices before
the age of 18"
TWAIN: "Intercourse is life's most over-rated pleasure,
defecation is life's most under-rated pleasure" - Letter's
From Earth
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