Polini 303 fuel burn test - How did it perform!
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- Опубликовано: 27 мар 2024
- How much fuel did I use in 1 hour. To fly further and for longer, understanding your fuel burn, a few tests need to be conducted. I tried to fly a typical flight for exactly 1 hour and see what the fuel burn would be. The link to the Polini website is below and it will show the fuel burn figures at 4500 rpm.
www.polinithor.com/en/thor-30...
To best understand how their figures relates to real world, the NiNE at hands off trim ( fixed trim) is about 53 mph and requires 6300 rpm to remain level in flight.
The tank contained 16 litres before engine start and a complete flight cycle of Start, warm up, taxi take-off, cruise, land and taxi back in.
I frequently get asked about the kit I use, all links or names are below.
compass mount
www.etsy.com/uk/listing/11567...
Chin guard/ visor air dam:
microavionics.com/products/ne...
Compass Silva Un70.
My PeaBee radio and communications set up is:
ICARO SCARAB Helmet with MicroAvionics PM100 Bluetooth (Vlog modified by MicroAvionics)
www.microavionics.com/paramotor
My Airband radio ( I have the appropriate Licence) is :
www.microavionics.com/ Yaesu FT450 FTA .
Engine instruments:
Trailtech TTO Tech and CHT
Fuel gauge - Tiggy Aviation
Tiggy fuel flow and quantity device - Soon to be an upgrade coming out.
GPS
NAVITER OUDIE 5 PRO with FLARM
SkyDemon
Electronic Conspicuity device
SkyEcho 2
Camera and Microphones:
Flight Briefing room
Video Camera 4K Camcorder ORDRO WiFi Ultra HD Vlog Camera and a ICE BLUE microphone
Flying cameras
GoPro 3+, GP6 and 7 with audio adaptor.
Camera Mounts/ cases
flybubble.com/flytec-bumblebee
www.flypureair.co.uk/store/Ca...
Flying Clothing:
FlyKandy Jacket and trousers
OZEE flying suit EXEAT and 30seven gloves
Sealskinz mittens
Editing software
Adobe Premier elements
Music - Epidemic Sounds - Subscription.
First!
Trikes, ultralight (generic Part 103), and WSC (weight shift control) for official FAA designation of 2 seaters in general.
Glad to see you are managing to get some time in the air despite this awful relentless rain & wind 😰
Thank you for the testing. All 2 strokes are more prone to catastrophic failure due to operating conditions. They run hotter and closer to failure of the metals durring normal business than a typical 4 stroke. I've flown both Rotax 582 and 912 for several years each and the 912 is more robust. Just the nature of the beasts. In microlight, we just can't spare the 4 stroke engine weight penalty for HP.
Nice one. I've got the same plan for the weekend. Be interesting to compare figures.
Well I surprised myself there - I guessed 6 litres at the start. Just incredible consumption though given the size and speed of the Nine wing. Cheers, Giles - another enjoyable watch. 👍🙂
Top video Giles, love the markings on your fuel tank really smart 👍
Excellent result Giles for a 38HP engine. I guessed 5-6.
An hour of flying that was put to good use, as it's always handy to know how much fuel you're actually
I guessed 3.5lph before watching this video ;-) but then I have flown a 303 @ 4500rpm.
My prediction was 6.5 to 6.75 LPH. You proved 6 LPH. I think on a longer flight, say 2 hours, it would burn a bit more, as obviously the engine would be at 6200 to 6300 rpm for a greater percentage of the flight. Planning for 7 LPH gives a good margin. Except on longer flights in rough conditions where you might burn a bit more. The river cutting through the gorge was quite spectacular. 👍
Ha! I find it amusing that you scout for engine out fields. It looks like you can land anywhere around there. We're I fly I have to decide which house I might be able to miss.
Congratulations on the channel, great flying machine. What diameter is your prop? Is that a 160 cm?
Always do emergency landing practice. I had a fuel starvation problem. That's when your engine makes no noise!
Delta probably comes from the company name of one of the first hanglider manufacturers, Bill Bennett’s Delta Wings.. I guess it stuck a bit like people calling a vacuum cleaner a Hoover.
Thanks for the video...very interesting. I'd like to ask a couple of questions and and make a couple of comments: 1) I know when you (we) fly the slower Pee Bee wings there's no real need for an Air Speed Indicator (ASI). Do you feel you need to have one now with the Nine? If you have an ASI, what do you use? 2) I have a Polini 250 with a Fox TL13 wing (I recently ordered a Nine wing so I'm excited) and burn right at 4 liters an hour, run about 5,300 RPM, and cruise about forty. When running at this RPM my EGT can get a bit high. However, at around 6, 000 rpm my EGT is quite low... so that's a good thing. I only burn 100LL. Here in the States it's hard to get good gas...fuel that has a high octane rating, and doesn't have ethanol. When you fly at Sun & Fun...make sure they're using "good" gas. I really don't trust our "pump gas"...I think poor fuel has contributed to a number of engine problems here. Honestly, I don't trust "pump gas" .
Back in the day, here in the States, these were called "trikes". However, with the advent of PPG's they are now using trikes as well so it's a bit confusing. When I go to take off here at the local airport I call myself a "flex wing ultralight". Since I'm a true ultralight I don't have an "N" number. Talking to other regular pilots I think the term "flex wing ultralight" best describes what I'm flying and what other pilots in the pattern should be looking for.
That's pretty good Giles. I messed about with my low jet setting at the end of last year (PB/Adam) and was doing 8 l/hr (rough as heck in the cruise) and haven't flown it since October, to see if it's resolved after I fiddled it back a bit?
So the next flight do it for say 1.5 or 0.5 and then from the differance you can work out what your transit fuel burn is and the normal start climb and approch shut down so you and all the details to plan flights (well almost because you should do this a few times at different speeds, hights and temps).
I thought about 5 before watching the rest of the vid.