30mm motor inside a spinner

[Wayne]

With a lot of RES planes designing around the 22mm DYS motors, we thought it might be good to make a special spinner for this motor.

Here is our first proof of concept:

While this sample is 3D printed, it is designed to be built in aluminum. We were able to keep the outside diameter down to 30mm. In aluminum we might be able to reduce that a bit more.

This sort of design allows the motor to be mounted on the front of the firewall, this makes mounting and wire routing pretty easy while also making a lot more space inside the model and getting the mass of the motor out as far as possible.

 

[Tmcfarland]

With a lot of RES planes designing around the 22mm DYS motors, we thought it might be good to make a special spinner for this motor.

Here is our first proof of concept:
View attachment 24321View attachment 24322

While this sample is 3D printed, it is designed to be built in aluminum. We were able to keep the outside diameter down to 30mm. In aluminum we might be able to reduce that a bit more.

This sort of design allows the motor to be mounted on the front of the firewall, this makes mounting and wire routing pretty easy while also making a lot more space inside the model and getting the mass of the motor out as far as possible.

After lots of frustration installing motors in 2m gliders I think this is great. However that 22mm dys motor is very under powered in my experience. Also runs hot. Why not use the dys you sell for the silly stick. That thing is a power house. I used the dys 22 out runner on my Eli and on a 2s battery it barely climbed. Just now installing the new brushless motor combo on my mini wanderer. Looking forward to see how it works.

 

[RafaelAvila]

Keep us updated about the mini wanderer motor, we love to see it

 

[Wayne]

We will be offering a range of motors inside the spinner options. Starting small and working our way up.

We picked that 22mm motor as it seems to be very popular with RES designs and it has a unique feature of the screw mounts on both ends.

 

[Tmcfarland]

We will be offering a range of motors inside the spinner options. Starting small and working our way up.

We picked that 22mm motor as it seems to be very popular with RES designs and it has a unique feature of the screw mounts on both ends.

On my Eli 2m I started with the Dys. It was hard to install and I needed to remove a lot of structure. Then went to a Hacker A10 but just did not like it. Then just mounted an emax on the fire wall and love it. Climbs like a rocket. Looking forward to what you come up with. This will be popular in Europe. Vlads models makes some but they are usually out of stock. Pictures are the unfaired Emax motor. Still glides really well.

 

[Wayne]

Yeah, I have been sharing the spinners with some of our partners in the EU that design RES models. So far not a lot of interest.

We were able to reduce the yoke diameter on the sample shown above. Now even cleaner.

 

[Wayne]

This has had a few more revisions, 30mm outside diameter has remained, but a bit cleaner and smoother now.

We are able to run prop calcs on this motor now, and the 2000kv version on 3S 450/75C battery with a 9x5 blade will pull 200 watts for 10 seconds. This is about the maximum you are going to be able to get without melting the motor down. And you better give it some cooling time before repeating. This is reported to pull the average RES glider up to altitude in that 10 seconds. An 8x5 would probably be a better combo where you are not running the motor so hard.

 

[Wayne]

Sample motors on the way, one of them should offer 46 oz of thrust with a similar spinner, no 10 second time limit. About the same weight, but closer to a 32mm diameter for the spinner. But it will bring other challenges. Remember this is motor inside the spinner layout. Other option is a smaller motor and that should be good for about 20 to 25 oz of thrust. (These are the sizes of planes I like.)

 

[Tmcfarland]

Sample motors on the way, one of them should offer 46 oz of thrust with a similar spinner, no 10 second time limit. About the same weight, but closer to a 32mm diameter for the spinner. But it will bring other challenges. Remember this is motor inside the spinner layout. Other option is a smaller motor and that should be good for about 20 to 25 oz of thrust. (These are the sizes of planes I like.)

25 oz is 709 grams of thrust. 2 meter gliders are around 500 grams in weight. So how does that work out in climb rate. Definatly enough power I would assume.

 

[Wayne]

We tend to target at least a 1:1 thrust ratio for our planes these days. Everytime we do anything less we get complaints that they are underpowered. Personally I like a lower power/lower weight setup in my gliders. Call me silly.

The trick here is we can give 25 oz of thrust with something close to a 30mm spinner, probably a smaller spinner than most 2 meter ships would require. We can easily offer wider spinners for the same motor, and probably will be doing that if there is any requests.

The 46 oz of thrust motor should be a better match for a 2 meter glider.