G1 AVIATION G1 SPYL

The G1 is an ultralight aircraft, Super STOL (Short Take-Off and Landing), well adapted to mountain flying, made in France.

DURANDAL-3
I had a Flash on my G1, which was sold to me as the absolute best. I tried a friend’s Durandal because he was getting great performance on his A32, so I wanted to see if I could get better performance too.
What a surprise!
I saved 2.5 kg up front, gained at least 400 ft/min in climb rate, 10 km/h in cruise speed (Eprops’ ESR effect is impressive—you have to try it), improved fuel efficiency by at least 6%, and—most importantly—gained in comfort: no more vibrations!
So I bought a Durandal directly from the factory. Ordered on Monday, delivered the following Monday, complete with all components and instructions for assembly and adjustment.
I’ve been flying it for 50 hours now—it performs better and is more enjoyable than the Flash. It’s a shame the Eprops wasn’t installed as standard equipment from the start.
A.F. (2025-11-11)

DURANDAL-3
Hi to all of you. I had another French brand of propeller recommended by the G1 manufacturer. Taking advantage of your money back offer, I tried the assembly and adjustment of your propeller. I am bluffed by the performances and the lightness. It is solid because I go on poorly prepared airfields in mountains. Great job, thanks to the whole team.
R.S. (2022-07-01)

DURANDAL-4
The 4blade Durandal on the G1, take-off extra-short!
STOL takeoff guaranteed.
H.R. (2022-03-08)

DURANDAL-3
Impressive website! That's where I discovered your durandal for my G1 and I fell for it of course.
Everything is perfect and I am very happy. Your customer service is top notch!
C.M. (2021-05-19)

DURANDAL-3
Much better than the Duc Flash on the G1. A much greater reactivity, better takeoff even at altitude, more speed in cruise. And in the end, the Durandal propeller is stronger than the Flash, even though it's thinner. Nice job, congratulations to the team.
D.P. (2020-06-19)

DURANDAL-3
The 3-blade e-props has many qualities, in particular, compared to the duc flash, to allow you to fly faster without altering the take-off distance or climb rate. It is appreciable for mountain flights as I often practice.
M.B. (2019-09-29)

DURANDAL-3
Meeting GALDEZ 2019 : Eric Grare on his ULM G1 with E-Props propeller big winner.
The GALDEZ competition, inspired by the prestigious VALDEZ, took place on 15 and 16 February 2019 in Gap-Tallard, bringing together 16 ULMs (3 gyros and 13 multi-axis). Objective: to measure which took off and landed as short as possible.
For the multi-axes, it was almost a single type competition: ultralights of the same mass equipped with the same engine. The only differences were the pilots and the propellers.
Eric Grare (well-known motorcycle competitor) put everyone in agreement with his G1 Rotax 912S and his propeller E-Props Durandal: takeoff in 25 m + landing in 17 m = total 42 m!
The next best totalled 74 m, i.e. 32 m far behind. Jean-Louis Schlesser, aboard his Storch 912S with Duc Swirl-3 propeller: take-off in 44 m and landing in 30 m.
Magnificent victory for Eric, an outstanding pilot who chose his equipment well... (2019-03-05)

DURANDAL-3
Excellent equipment for my G1. I don't regret it, especially in hot weather.
H.M. (2018-06-20)

DURANDAL-3
The best propeller for the G1 without hesitation.
Gain of 15 km/h cruise speed in comparison with the standard prop.
Lighter.
Stronger. I have flown it during many hours without any repairs.
And nice carbon finish.
Congrats to your team!
L.T. (2016-12-10)

DURANDAL-3
I am very satisfied with the modification made on my G1 100hp. The original DUC propeller did not give me satisfaction and I had the idea to test your equipment for a long time. It must be said that your money back guarantee is reassuring. I tested your propeller in all configurations. I am amazed. I didn't think it was possible: I won in every way. Takeoff, climb, top speed. I gained 15 km/h in cruising speed at 4800 rpm and I even reduced fuel consumption. It's incredible.
A friend of mine has the same propeller on his Savannah and he made the same findings.
So no doubt: I'm very satisfied!!!!
L.H. (2016-06-18)

DURANDAL-3
I often land on the altisurfaces of the Southern Alps in hot weather.
Very short take-off and more cruising speed than before, no vibrations, a much more muffled noise: perfect!
E.D. (2015-07-27)

DURANDAL-3
The best propeller for G1 when you want to take off short and travel far because this propeller has a big extended speed range.
It is also very solid for mountain airfield. It has true STOL performance that helps it win competitions.
P.P. (2015-07-15)