Description
Electric motors require lighter props generally than glow motors; they do not need the flywheel effect of a heavy prop to sustain ingnition and can develop more revs with light blades. The growing popularity of sport, cabin, aerobatic and scale electric aircraft has created a demand for suitable fixed blade props. The most popular brand is APC.
I have given the size of the bore in each prop as this has been an issue with some fliers. The revs limit with APC-E props is 150,000 dived by the prop diameter in inches, eg. a 10″ prop can spin at up to 15,000 rpm.
APC provide a stepped hub. The hole in the front is nominally 6.5mm, but I have noticed that the size varies slightly, and even APC themselves say that this is not a precision hole. The rear side of the hub has a 9mm hole which is precison made, and this creates a step in the bore of the prop. A range of collets is supplied with each propeller to fit in this rear stepped hole to adjust the bore in a range of sizes right down to 3mm. So, you can either add the required collet, or bore out the hole to 9mm.
| Prop Type | Prop Size | Bore | Price |
|
APC
|
5.1 x 4.5E
|
6mm
|
$4.95
|
| APC | 6 x 4″E | 6mm | $4.95 |
| APC | 6 x 4″EP (pusher) | 6mm | $4.95 |
| ParkZone | 6 x 4″ | 6mm | $4.95 |
| APC | 6 x 5.5″E | 6mm | $4.95 |
| APC | 7 x 4″E | 6mm | $4.95 |
| APC |
7 x 5″ E | 6mm | $4.95 |
| APC | 7 x 5″EP (pusher) | 6mm | $4.95 |
| APC | 7 x 6″E | 6mm | $4.95 |
| APC | 8×4″E | 6mm | $5.95 |
| APC | 8 x 6″ E | 6mm | $5.95 |
| APC | 9×4.5″ E | 6.5mm | $5.95 |
| APC | 9 x 6″E | 6.5mm | $6.25 |
| APC | 9 x 7.5″E | 6.5mm | $5.95 |
| APC | 9 x 9″E | 6.5mm | $5.95 |
| APC | 10 x 5″E | 6.5mm | $6.95 |
| APC | 10 x 6″E | 6.5mm | $6.95 |
| APC | 10 x 7″E | 6.5mm | $6.95 |
| APC | 10 x 8″E | 6.5mm | $6.95 |
| APC | 11 x 5.5″E | 6.5mm | $7.95 |
| APC | 11 x 5.5″EP (pusher) | 6.5mm | $7.95 |
| APC | 11 x 7″E | 6.5mm | $7.95 |
| APC | 11 x 8″E | 6.5mm | $7.95 |
| APC | 11×8.5″ | 6.5mm | $7.95 |
| APC | 11 x 10″E | 6.5mm | $7.95 |
| APC | 12 x 6″E | 6.5mm | $9.50 |
| APC | 12 x 6 EP (pusher) | 6.5mm | $9.50 |
| APC | 12 x 8″E 12×8″ EP (pusher) |
6.5mm | $9.50 $9.50 |
| APC | 12 x 10″E | 6.5mm | $8.95 |
| APC | 12 x 12″E | 6.5mm | $8.95 |
| APC |
13 x 4″E for 3D | 6.5mm | $11.95 |
| APC | 13 x 4.5″EP (pusher) | 6.5mm | $11.95 |
| APC | 13 x 6.5″E | 6.5mm | $11.95 |
| APC | 13 x 6.5″EP (pusher) | 6.5mm | $11.95 |
| APC | 13 x 8″E | 6.5mm | $11.95 |
| APC | 13 x 8″EP (pusher) | 6.5mm | $11.95 |
| APC | 13 x 10″E | 6.5mm | $11.95 |
| APC | 14 x 7″ E | 6.5mm | $13.50 |
| APC | 14 x 8.5″E | 6.5mm | $12.50 |
| APC | 14 x 10″E | 6.5mm | $12.50 |
| APC | 15 x 4″E | 6.5mm | $13.50 |
| APC | 15 x 8″E | 6.5mm | $13.50 |
| APC | 15 x 10″E | 6.5mm | $13.50 |
| APC | 16 x 8″E | 6.5mm | $15.00 |
| APC |
16 x 10″E | 6.5mm | $15.00 |
| APC | 16 x 12″E | 6.5mm | $15.00 |
| APC | 17 x 8″E | 6.5mm | $19.95 |
| APC | 17 x 10″E | 6.5mm | $21.00 |
| APC | 17 x 12″E | 6.5mm | $16.50 |
| APC | 18 x 10″E | 6.5mm | $20.00 |
| APC | 18 x 12″E | 6.5mm | $20.00 |
| APC | 19 x 12″E | 6.5mm | $24.00 |
