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BB 450 jabi

Posted: Sun Jul 01, 2012 1:16 pm
by V5-HOT
Hi in SA

I am now a owner off a nice BB jabi 2200.
The performance of a jabi in hight and hot places is a bit.......... :mrgreen:
Have some boddy experiance with an woodcomp inflight adustable prop on this type ?
thanks
Ralf
ballooning-namibia.com
petras-gaestehaus.com
uis-namibia.com

Re: BB 450 jabi

Posted: Sun Jul 01, 2012 3:15 pm
by KFA
We had a Woodcomp on our Safari with a Jabi 3300 and the performance was so so. Always had issues with temps. Fitted a P prop and pffooof, magic. The problems went away in an instant. Service from them is also sketchy to say the least. Have been waiting 4 weeks now and lots of e-mails and I still do not have a quote for 912 blades.

For Rotax motors they are Ok but I will not recommend them on the Jabi 3300. I could be wrong. Maybe it will work Ok in the faster airframe. Who knows?

Re: BB 450 jabi

Posted: Sun Jul 01, 2012 6:02 pm
by V5-HOT
No meenings to a IN FLIGHT ADUSTABLE PROP ?

Re: BB 450 jabi

Posted: Sun Jul 01, 2012 9:32 pm
by Boet
Is it this one?? I notice it has a Jabbie propellor too? That right? You need the RIGHT propellor for this intallation. Please phone Pieter De Necker at 27 11 7935235. He is our resident propellor guru, and famous propellor maker of note. Have him make u a proper prop for your BB. You will never be sorry!!

Re: BB 450 jabi

Posted: Sun Jul 01, 2012 9:39 pm
by Boet
You must be carefull of fitting ANY other prop than a 2-blader wood on your Yabbie engine. The Yabiru factory frowns apon other "exotic" makes, especially 3 bladers, as no testing was done with it, and you can easily become the guinea -pig that will maybe find some serious resonance incompatibility problems!! BE AWARE!!!!!!! One of my friends had a 3 blade in flight adjustable prop on his Jab, and the HUB cracked. He fitted a De Necker prop, and it out-performs the 3-blade monstrosity hands down anyway!! (^^)

Re: BB 450 jabi

Posted: Sun Jul 01, 2012 9:55 pm
by KFA
Now i understand. The prop you need id a p prop 62x32. We fit it to all the BB with a 2200 jabi motor. You also need to look at the cowl. The frontal area needs to be as small as possible to make the prop eficient enough. A VP is a waste of time and money. A P prop will outperform them all on that combination. No need for school fees, we paid it already.
Regards
Stefan

Re: BB 450 jabi

Posted: Mon Jul 02, 2012 11:51 am
by V5-HOT
Jaaa.....
Now i have an idea , thanks guis !
I will first , go for a quot for the cooling ,a prop and paint.
I will send Picture on this forum after.

sunny regards from Brandberg
Ralf

Re: BB 450 jabi

Posted: Wed Jul 04, 2012 8:46 am
by Aerosan
KFA wrote:Now i understand. The prop you need id a p prop 62x32. We fit it to all the BB with a 2200 jabi motor. You also need to look at the cowl. The frontal area needs to be as small as possible to make the prop eficient enough. A VP is a waste of time and money. A P prop will outperform them all on that combination. No need for school fees, we paid it already.
Regards
Stefan

Stefan is right on the numbers :!: I paid the school fees as well. 3 blade in flight ajustable VP, 300 fpm, De Necker prop 520 fpm and it was the wrong prop :mrgreen: I didnt get full rpm. got the right prop from Piet and I was flying a homesick angel :) :wink: (-)

Never again in my life will I stray from Pieter De Necker, I just hope he never dies.............. well before me that is :lol:

my 2c worth

Re: BB 450 jabi

Posted: Wed Jul 04, 2012 9:41 am
by Jean Crous
I also had a 3 blade in-flight adjust prop on my Revmaster inatallation , in a Bushbaby. Climb was not impressive, speed was sort of ok. Fitted a De Necker 2 blade wood prop....... :o :o ....a completely different aeroplane!!! Climb much better ,speed much better. I also paid the school fees, so trust the likes of Stefan , Boet , Aerosan......and me.
Regards
Jean.

Re: BB 450 jabi

Posted: Wed Jul 04, 2012 11:04 am
by JvTonder
JeanTree wrote:I also had a 3 blade in-flight adjust prop on my Revmaster inatallation , in a Bushbaby. Climb was not impressive, speed was sort of ok. Fitted a De Necker 2 blade wood prop....... :o :o ....a completely different aeroplane!!! Climb much better ,speed much better. I also paid the school fees, so trust the likes of Stefan , Boet , Aerosan......and me.
Regards
Jean.
En ek kan ook saam praat, het dieselfde pad geloop!!!! P-Prop is baas vhpy (^^)

Re: BB 450 jabi

Posted: Wed Jul 04, 2012 11:21 am
by V5-HOT
Hi boys
I will beleeve you , its nice thad you paid my schoolfees allrady.
For the cowling on the BB i have now a new idea.
I like to macke a cowling like for the Radial engine and use the
original jabiru ducts on the engine ,for optimal cooling.
look at: http://www.jabiru.flyer.co.uk on the report and foto from collins kitfox
Wat do you think about it ? cooling will be like on a Bantam
Ralf

Re: BB 450 jabi

Posted: Wed Jul 04, 2012 8:30 pm
by Jean Crous
V5-HOT, quicker and easier is to contact Stefan on this forum, and he can supply you the RIGHT cowling for the Jab installation.........school fees have been paid there as well by Stefan :lol:
Regards
Jean.

Re: BB 450 jabi

Posted: Fri Jul 06, 2012 8:05 am
by Aerosan
V5-HOT wrote:Hi boys
I will beleeve you , its nice thad you paid my schoolfees allrady.
For the cowling on the BB i have now a new idea.
I like to macke a cowling like for the Radial engine and use the
original jabiru ducts on the engine ,for optimal cooling.
look at: http://www.jabiru.flyer.co.uk on the report and foto from collins kitfox
Wat do you think about it ? cooling will be like on a Bantam
Ralf
how about a small refund :?: :mrgreen: :twisted:

fly safe

Re: BB 450 jabi

Posted: Fri Jul 06, 2012 8:20 pm
by KFA