This is part of the new lineup of Gemfan props. Tracking with the design language of the extremely popular 51466, Gemfan brings us a 3.9g prop that has a slightly lesser pitch and slightly less weight. The result is a prop that should be a bit more responsive with similar overall speed and easier overall throttle management.
There are a number of props in the same category as this prop and all of them are really fantastic. Gemfan 51433, Nazgul 5140, DAL Nepal 1, HQ S3, 4, and 5. Of these. The 51433, Nepal 1, S4 and S5 are extremely similar with the Nepal and Gemfan being a little more efficient overall. The flight feel between them all is very close and you will need to try them to decide which you prefer.
Specifics:
- 5.1"
- 3.78g
- Supposed to have a pitch of 4.33"
- Made from Polycarbonate
- 6mm hub thickness
Recommended use:
- 5” quad
- 2306, 2207, 2208 motor in 1750-1900kv
- 6S for power
- 4S for cinematic and smooth flying with high control and percision
- AUW 540-670g range recommended
Customer Reviews
I would say these are very similar to S3 but way more efficient. They are now my main prop for my 5" ApexHD with Steele Stout motors 6S rig that weighs ~580g. Really like smoke up front and neon yellow out back. Another bonus with Gemfan is they have better flexibility in winter than HQ/DAL/Azure.
I have tried alot of different props in the past few months, this prop is the best out of all of them. I think the fact that it's light weight is a huge factor. It gives the motor that chance to really make the prop sing and its voice is quiet but powerful. Full throttle resolution from the mid teens to 100% - Surprising efficiency. My lightweight 587 gram auw 5" Quad can easily do 10 minutes of cruising and 8 minutes of spirited flying on a 5s 1500 mah lipo. I definitely recommend you try everything Bob recommends. He knows what he's talking about.
It’s like HQ V1s 4.3 meets Ethix S4. A noticeable improvement in top end power over a 3.8 pitch prop, still very smooth footage on the go pro and super responsive. Flight time was within 15 seconds of the same rig running ethix S4 props. Really a must if your running over 700g AUW and need a little more pop or hang time on your freestyle runs. The smoked grey / black color disappears pretty good for those that have props in view, personally I love the neon yellow 🤘
if you have 2207 or 2208 motors and have problems with other props on these sizes this is you’re answer especially on the glide frames were you can run 5.1 props gemfans my new favorite
The blade quality is very good. Very balanced and flexible
Works great!
Gemfan 51433 Tri-Blade 5" Props (2CW + 2 CCW)
My favorite freestyle prop with a mild pitch
Smooth and snappy when needed. Low pitch works well with my 2306.5 motors.
Love these props. Great throttle resolution and smooth
Let customers speak for us
these motors are nice and smooth on a 1s build!
Now even better with o4 lite!
Truly a fantastic frame!!! The only shame is that I have to pay duty to get your wonderful frames. A sacrifice I'm happy to make!!!
“ I’ll buy another motor from ##### and use my Fpv cycle motors as a hammer and bend their motor with mine, and then go fly” -spider sugar
Great frame, durable and cheap
Gemfan Hurricane Durable Tri Blade SL 5125 Propellers (2CW + 2CCW)
Great frame. Great flyer.
Worked very well easy to solder flies great very fast and responsive
The best motor I’ve ever tested
This is the best motor I’ve ever tested
These motors are so smooth and have so much power. I have them on a light weight 5” and it has to much power I had to limit the power on them. Great durability as well. Taken some hits and still running smooth.
👍
Well packaged and a nice varity of mounting bolts
I have not flown these motors yet, but they came in on time and look really nice. The packaging was really secure and nice. Also thank you for the free battery strap and sticker :) that’s always a nice bonus.
I really like this product. I've bought one in the past. However, the only thing I was a little bit unhappy about is the fact that they don't give you an extra arm anymore. They used to give you five nowaday, only give you four other than that.This product is great
What customers think about the store
FPVCycle offers high-quality FPV products with excellent performance, durability, and value. Their motors, frames, and other components are widely praised for smoothness, power, and low-throttle control. Customers appreciate the lightweight yet strong designs,...
