1047SF Combo (1047SF & R1047SF) (3 Standard & 3 Counter Rotating Per Bag)

 DriesRC 285 points

I use these props on a 1200kv brushess motor, it was recommend on that motor, and I have great power. hope this helped

 PAVLOS 12 points

750kv is perfect dt motors from hk

 DriesRC 285 points

the diameter is 25.5 cm. I don't know how to calculate the pitch. but why would you need that? just look if the dimensions are good for your motor. hope this helps

 majik01 2907 points

The length of the prop is 10 inches while pitch is 4.7 and are Clockwise and Counter-Clockwise propellers (to develop thrust). A 1045 prop would be 10 inches length at 4.5 pitch. These are similar to the GWS SF props but have thinner hubs with 3mm holes - perfect for 3mm threaded shafts found in the CD Rom type 2409/2410's BL motors which would only require a lock nut to hold the prop on the shaft (prop has the hex nut indention on the hub). Be sure to use locknuts as the prop could come loose for the "pusher" prop.

 DriesRC 285 points

Oh, now I understand what the 10x4.7 means, its the diameter and pitch :) good to know

 majik01 2907 points

These props are the same as their GWS cousins - prop holes are 3mm and do not come with any adaptors. Similar to the GWS slofly their hubs are not very big.

 majik01 2907 points

To add, there are props that have a bigger shaft hole and come with adapters for different size holes.

 drmobile 171 points

These kind of props don't come with any shaft adapters. Most people use it with prop saver with motor shaft of 3mm, Even if u want to use with bigger motor shaft. You need to make bigger whole with knife edge reamer to your required shaft size. Br. [Report for Spam]

 z01zz 2 points

This prop has a 3mm hole.

 majik01 2907 points

These props were designed to be used with the GWS geared motors on threaded 3mm shaft with the use of nuts and washers to keep the prop in place along with a rubber spinner for "looks". They have kept the design all these years even if the use of "geared brushed" motors are uncommon. I use these for quads with TGY 2409 CD 3mm threaded shaft BL's. No prop adaptor needed - just need to get the rubber spinner. Not the best idea to use these with other prop adaptors if you have to bore a larger hole as the hubs are relatively small.