ULPower 350is

[Esser]

The UL350iS is 173lbs with oil and exhaust

Rotax 912iS 160.7 with exhaust no oil.

[UrsusB]

RJ, no online builders log but I will keep the group apprised of my progress.

As a general FYI I just received this from Robert Helms with UL here in the states, I think he must have heard that this has generated some interest on the forum;
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"Hi Jeff,

I can't log onto the Kitfox Forum so I was wondering if you would be so kind as to refer people to me if they have questions for which you don't have any answers.

FYI, we have about 500 engines delivered worldwide (about 50 in the US). The all-in weight of the 912 is about the same as the 350iS but the 350iS has a lot more power. The 912 is more comparable to the 260i or 260iS in terms of HP and torque and the 260 is lighter and less expensive than the 912. The idea is to keep people from comparing the 912 to the 350iS because they are not comparable."

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Thought some of sold numbers were good, hope that means we customers will have good support into the future and I won't end up with an orphan!

Jeff

[AirFox]

I'm pretty sure Steve Henry's Highlander(taildrgfun) has a Turbo 912s. He posted a video on youtube 2 months ago.

[Esser]

Steve Dentz has the UL350iS highlander

[AirFox]

Esser, I got a chance to see Steve Dentz Highlander at WAAM last summer. He did a very good job on that plane. Sure would be nice to see the stats on his plane. Anyone know what kind of results he is getting?

[AirFox]

I found some interesting practical info on the ULPower 350is at the following link.

http://groups.yahoo.com/group/UL-Pow...es/message/107

I wonder how this data would translate on the Super Sport????

>>>From the link.
I now have 128hrs on my UL350iS and I've done numerous checks on my fuel consumption and the most I've ever burned in my Highlander running at 2800 rpms was 6.0-6.5 which I'm very pleased with for 130hp.
I also put on another Catto test 74X32 a couple of weeks ago and here are the stats on it:
Full throttle static rpms: 2690-2700
Full throttle static thrust: 440 ft/lbs
Full throttle level flight rpms: 3150-3210
Full throttle level flight TAS (True air speed) in mph: 103-105mph
70mph climb out: 2910 rpm & VSI: 950-1100fps
20-25% reduction in take-off over Catto 72/42 prop

TAS

GPH

MAP

2700 RPM

91

4.9

18.2

2800 RPM

94

5.3

19.3

2900 RPM

99

5.8

21.0

3000 RPM

101

6.1

22.3

3100 RPM

103

6.8

24.0

3200 RPM

105

7.0

25.3

The above data was taken during morning hours at 1500MSL with a barometer of 30.02

Another data point is that when I'm flying at 5000MSL and above the GPH numbers above are reduce by .5gph which tells me the FADEC is doing its job.

Comparing the Catto 74X32(short field prop) to the previous Catto Prop 72X42(cruise prop):
-Shortened takeoff by 20% (80-100')
-Reduced Full throttle level flight by 10 mph
-Increased VSI
-I'm assuming the 74X32 will perform much better at high altitude

Catto will be sending another test prop (74X34) which will hopefully give back some cruise speed and maintain the short field performance. I'll report on that when I complete some testing.

I also did a thrust test with a wood Sensenich 68X38:
Full throttle static rpms: 2850
Full throttle static thrust: 370 ft/lbs
Full throttle level flight rpms: 3230
Full throttle level flight TAS (True air speed) in mph: 106mph
70mph climb out: 3010 rpm & VSI: 900fps

The above tells me that the blade design and efficiency of a Catto prop is much better then a wood Sensenich. Catto is now using a CNC process in building his props which makes vibration almost undetectable. The vibration of the Sensenich wood was very apparent.
I wish I could test other ground adjustable props against the Catto but I can find anyone that will sell or lend me a two bladed ground adjustable for the 350iS because the manufactures don't know what the 350iS engine pulses will do to their hubs.

Steve D
Highlander N419BD