3300 Scimitar Jab prop

[quentas]

I fitted the new Jab Scimitar prop today and am quite impressed with the performance compared with the old wooden prop. It seemed to TAS around 5 knots quicker at same revs. I also had the cold start kit fitted so no more embarrasing lids off on cold morning starts! I would imagine there has been a rush on those kits as there was a bit of a wait. Cheers.

 

 

[mlpinaus]

I reckon the "120 knots at 20 litres per hour" means " choose one.." The misery meter on 24-7595 says I burn around 35-40 litres per hour to get 120 knots . Around 2850 rpm. I am now thinking of both mods.... although it is starting first go at the moment..... . Not after a night out freezing usually. Cold start kit first then......

 

regards

 

Marcus

 

 

[AVOCET]

T

 

I reckon the "120 knots at 20 litres per hour" means " choose one.." The misery meter on 24-7595 says I burn around 35-40 litres per hour to get 120 knots . Around 2850 rpm. I am now thinking of both mods.... although it is starting first go at the moment..... . Not after a night out freezing usually. Cold start kit first then......regards

Marcus

Gee , that sounds a bit excessive for a 3300 . Those figures would indicate full power on take off & climb out .

 

For 2850 should be reading about 22 ish lt/hr

 

Sure your taco is ok ?

 

Full throttle should give 138 knts ish depending on hight above sea level

 

Somthing doesn't sound right ! Have you calibrated your fuel flow , hrs flown , fuel used ect. ?

 

Cheers Mike

 

 

[jetjr]

With jab engines fuel is cheap, dont try to run too lean

 

2900 sees 127 kts @ 27 lph in j200. Bolly 2 blade, very similar to new Jabiru option, done 150 hrs +.

 

 

[quentas]

With jab engines fuel is cheap, dont try to run too lean2900 sees 127 kts @ 27 lph in j200. Bolly 2 blade, very similar to new Jabiru option, done 150 hrs +.

That sounds pretty much like mine. I was TAS 122knots @2800 and around 23 lph.

 

 

[jack1]

I,ve done around 25 hrs with the new jabiru fibreglass prop in the 230, Very happy, better balanced which gives smoother running, Climbs better and gives maybe 3-4 knot better cruise. I have a proptach 3 digital rpm readout and a fuel flow meter which are both very accurate. Cruise 2850-2900, 23-24 lph, TAS 123.