CNC PROPS

[Peter Gise]

I'm seeing more and more aluminum CNC rc boat props showing up on Amazon (probably from China).
Will aluminum hold up?
Does anyone have any experience with them?

 

[bermudadude]

maybe a 35mm but nothing that takes larger will hold up .. pretty sure

 

[Dave Gilles]

they do not hold up. the brass ones offshore electric sells do, though.

 

[gilbert galli]

from my experience, CNC propellers with a boat mono 91 and gas mono all break, with large electric boats lipo 12s they also break

 

[Kris Flynn]

Aluminium props work well on 4S oval setups...not so well.on 40k plus RPM SAW setups though

 

[Peter Gise]

from my experience, CNC propellers with a boat mono 91 and gas mono all break, with large electric boats lipo 12s they also break

Thanks for the information!

 

[Peter Gise]

I wanted to try these with 4S on a twin Cheetah with 2200 kV motors.
Do you think they will self destruct?

CNC 3/16 4.76mm Aluminum Propeller D40mm 2-Blade 4019 Prop P1.9 for RC Boat​

 

[Dave Gilles]

I wanted to try these with 4S on a twin Cheetah with 2200 kV motors.
Do you think they will self destruct?

CNC 3/16 4.76mm Aluminum Propeller D40mm 2-Blade 4019 Prop P1.9 for RC Boat​

yeah dont. go larger diameter and lower pitch first of all. a 1.9 pitch will want to cavitate.

try these instead in a 4216
reverse - OSE CNC High Rake Series Props : Brass & Iron alloy : Reverse Rotation : 42, 46 or 50mm Diameter Options | Offshore Electrics
normal - OSE CNC High Rake Series Props : Brass alloy : 40mm to 50mm Diameter Options | Offshore Electrics

 

[Peter Gise]

Thanks for the good advice!

 

[Peter Gise]

Left rotation 44mm 1.6 out of stock at OSE...

 

[Peter Gise]

The Cheetah came with 4019's which I see now are pretty much garbage for this boat.

So I am currently running 1716-17-45's. The boat runs very well with these high rake props.
I also have a set of 1717-17-45 to try next weekend.

 

[Dave Gilles]

your wires get pretty warm with those props? I run the same KV with data logs I sometimes pull 160A with a 4016. IDK if twins would do the same.

 

[Peter Gise]

The batteries get warm on the 1716-17-45's but they're old Turnigy 4S. Motors and wiring are cool...

 

[Peter Gise]

I'm also looking for a GPS Telemetry System. OSE had an RCM V2 Telemetry System that ran on a 2.4 GHz Gateway on shore but the company is no longer in business.
Anyone using GPS telemetry?

 

[Dave Gilles]

I use hyperion emeter2 for data logging. IDK if thats what you might want. Its very inexpensive.

 

[Peter Gise]

I use a Sanwa radio with telemetry, a data logging ESC and a wired GPS in my JAE 21 rigger.
I wanted to start fresh with the twin Cheetah which is why I'm looking for a system that includes a GPS.
Thanks for the information on Hyperion.