COMPOSITE GROUND ADJ JAB PROP

Australian designed and manufactured Jabiru Aircraft/

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Flooi
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COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Tue Nov 06, 2018 6:07 am

As new Jabiru composite ground adj prop for sale.
Condition as new. 120hrs. Prop is with Legair. Phn Leon
and make an offer. His no is 0837363969.
Reason for selling. I am having a P-Prop fitted.
Hennie
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by T4flyer » Tue Nov 06, 2018 1:14 pm

Hi Hennie,

If you don't mind me asking why? I have flown with a Sensenich ground adjustable prop, a P-Prop and a Jabiru ground adjustable prop in front of my 4 cylinder Jabi. (in that order) All good props, but the Jabi ground adjustable prop has been the best all round on my 4 cylinder aircraft. However I have heard that with its higher HP the improvement with the Jabi ground adjustable prop is not so noticeable on the 6 cylinder engines.

Anyway, just curious.

Cheers, Don.
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Thu Nov 08, 2018 3:37 pm

Hi Don. I've flown a few Jabs.. 4 as well as 6. Personally the P-prop
did better for me on the SP470 as well as on J430. I'll let you know
what's result. Collecting tomorrow.
Hennie
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Fri Nov 09, 2018 7:51 am

Collected. About 6knts more ias at 2850rpm. Supersmooth... luv wood...
Last edited by Flooi on Fri Nov 09, 2018 11:56 am, edited 1 time in total.
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andrem
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by andrem » Fri Nov 09, 2018 9:39 am

Can you fly the P prop in the rain?
Do not go gentle into that good night.
Rage, rage against the dying of the light.
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Fri Nov 09, 2018 11:55 am

andrem wrote:
Fri Nov 09, 2018 9:39 am
Can you fly the P prop in the rain?
Doubt it.... could possibly damage wooden leading edge...Why fly in rain?
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Fri Nov 09, 2018 12:15 pm

T4flyer wrote:
Tue Nov 06, 2018 1:14 pm
Hi Hennie,

If you don't mind me asking why? I have flown with a Sensenich ground adjustable prop, a P-Prop and a Jabiru ground adjustable prop in front of my 4 cylinder Jabi. (in that order) All good props, but the Jabi ground adjustable prop has been the best all round on my 4 cylinder aircraft. However I have heard that with its higher HP the improvement with the Jabi ground adjustable prop is not so noticeable on the 6 cylinder engines.

Anyway, just curious.

Cheers, Don.
Don. I think the Jabi would be best all rounder... considering pitch is adjustable.
For me.... I am lightweight... the P-Prop is fine. For heavier pilot and pax the advantage
of fining pitch is obviously a bonus. I luv the quiet and smooth P-Prop. Different people
and different tastes.....

Which Jab are you flying? What prop u using? What is IAS at cruise rpm?
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by T4flyer » Fri Nov 09, 2018 1:20 pm

Hi Hennie,

Glad the P Prop worked out for you =D> =D>

To answer you question, I have a J170 with the 4 cylinder engine (fuel injected) I like to go places so often 2 up, plenty luggage/crap and full tanks (always at MAUW :oops: ) and most of my flying is hot and high.

So my story, I had a Sensenich Carbon fibre ground adjustable on my previous UL120, it worked very well. So I ordered a new Sensenich prop for my new J170, what I didn't know was that Sensenich stopped making the shorter prop for the 4 cylinder engines and my new prop was the longer 6 cylinder prop just pitched for the 4 cylinder engine :shock: It never really worked as expected and the best cruise speed I could get was +- 85 knots at 3000 RPM, trying to pitch for more speed just killed the climb rate completely. I believe I just didn't have enough power for such a big prop.

A buddy had a P Prop on his UL120, I could never catch him, he out climbed me by far and ran away from me on every flight. (I got sick of calling "pull back please I'm loosing you") He then tried a Jabiru prop never really expecting any improvement and truthfully he was expecting even a little less performance (he's a P Prop man :lol: ). His UL120 performed even better once we had got the Jabiru's pitch right. So he lent me his P Prop and as I suspected my J170's performance was much better, I could now cruise above 90 knots at 3000 RPM with no loss in climb rate, I was very happy with the P Prop. But the improvement on my buddies plane was bothering me, I still could not catch him #-o So I bought a new Jabiru prop, after a few trial and error pitch adjustments I settled on a good compromise setting that I'm very happy with, climb rate is reasonable and no less than with the P Prop, but my speed at 3000 RPM is now just over 100 knots :shock: :shock: I can now cruise at 2900-2950 and maintain over 90 knots for hours on end.

So for me with my heavy J170 with its little engine and loaded to the hilt the Jabiru prop is defiantly the best I have found.

One last thing, one of the best radio call I have heard was my buddy calling, "pull back a bit Don I'm loosing you" 8) 8) I smile every time he has to make that call.

Cheers, Don.
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Fri Nov 09, 2018 4:14 pm

Thanks for the info, Don. So it is all about getting the pitch 100% right. My J170 4 cyl now indicates
90knts at about 2900rpm. After reading your comment, that looks about right..... but improving
performance is a non stop venture... :lol:
Post a pic of your 170 please...
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andrem
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by andrem » Sat Nov 10, 2018 12:49 pm

Flooi wrote:
Fri Nov 09, 2018 11:55 am
andrem wrote:
Fri Nov 09, 2018 9:39 am
Can you fly the P prop in the rain?
Doubt it.... could possibly damage wooden leading edge...Why fly in rain?
I like cross-country flying and have therefore flown in rain quite a few times (take off Swakop, land in Jeffreys Bay later that day).
IMO the ability to fly in the rain should be important to anyone who flies an aircraft that is capable of covering 2000km in a day.
Do not go gentle into that good night.
Rage, rage against the dying of the light.
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Flooi
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by Flooi » Sat Nov 10, 2018 1:52 pm

andrem wrote:
Sat Nov 10, 2018 12:49 pm
Flooi wrote:
Fri Nov 09, 2018 11:55 am
andrem wrote:
Fri Nov 09, 2018 9:39 am
Can you fly the P prop in the rain?
Doubt it.... could possibly damage wooden leading edge...Why fly in rain?
I like cross-country flying and have therefore flown in rain quite a few times (take off Swakop, land in Jeffreys Bay later that day).
IMO the ability to fly in the rain should be important to anyone who flies an aircraft that is capable of covering 2000km in a day.
If I flew such distances, I would take your advice... tx
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Re: COMPOSITE GROUND ADJ JAB PROP

Unread post by T4flyer » Sun Nov 11, 2018 6:00 pm

Hi Hennie,

You wouldn’t believe the difference 1/2 a degree of adjustment makes. It also worth spending time making sure each blade is pitched exactly the same (that can be a real pain in the butt :? )

If you’re flying on the highveld 90 knots at 2900 is about as good as it gets for a J170 with a 4 cylinder engine.

Cheers Don.

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