40 Prop. Metal 440

 fastmurx 42 points

No, I think for ASP too big diameter, the Nitro Engines need high rpm, otherwise very little power. I recommend to start with 34mm diameter, then increase slowly.

 Ninjatech 3650 points

First,you have to get a prop balancer. Then you have to rub with a sandpaper,the back surface of the blade that is heavier,in order to achieve equal weight on both blades.

 felix 8 points

it was SLOTED prop guys..i just asked the hk customer service

 Ryan 112 points

that is true but if need be it is possible to drill out the hole as long as you have a drill press so that it is perfectly straight.

 Ryan 112 points

sure, 440 means that it has a 4mm shaft and the pitch it 40 degrees. the same it true for a 535, this means that it has a 5mm shaft and a pitck of 35 degrees.

 Boaterguy 68 points

Ryan, I don't know where you get your info, but that's COMPLETELY wrong. 440 means it is 40mm, with a pitch ratio of 1.4. Total pitch is 40 * 1.4 = 56mm. Shaft size is likely 3/16", but I haven't bought it so I wouldn't know

 Ryan 112 points

I took all the measurements from the prop itself so in fact it is you who are wrong.

 Ryan 112 points

the internal diameter of the shaft is 4mm, but the outside diameter is 7.63mm so you could drill out the hole if need be.

 CardNark 4 points

wan any one help me

 Ryan 112 points

It should since both have 4mm shafts.

 Stuart 7 points

The pitch should be the same as an octura x440, 1.4. I assume that you are running a 36mm, or larger diameter motor, given that you have a 120 amp esc. Also, you want to be around 30,000 rpm at your final drive. Motor kv, multiplied by battery voltage, will give this no load speed. Also check the motors intended operating voltage. Either of these things can cause the motor to overheat.

 Stuart 7 points

440 should be fine, won't load motor too high, even on 6 cells. Please note that all metal props should be sharpened and balanced, for maximum peformance.

 TristanJones 49 points

I bought a length of aluminum rod sized 3/16th x 0.14 or 4.76x.355mm and sleeved the prop with that, fits great! I have sharpened and balanced this prop and fitted to genesis, motor temps 55deg after 5mins of run time on 4s and 60-65deg 5mins on 5s. I think this is too hot, so I run only 4s now. I estimate speed at 50mph or 80kmh.

 FORIS 5 points

no.this prop is very big for this motor

 phdpasso 101 points

3/16 polegadas (medido 4.78 mm). Eu usei em meu Surge Crusher, que tem eixo de 5 mm. Claro que tive que alargar para caber.( 3/16 inches, 4.78 mm diameter bore).

 Jeroenstream 38 points

Yes it is!

 steven 13 points

yes it will, depending on size of your boat

 Lachlan 10 points

Yes you can i have one my self.

 Lachlan 10 points

i can upload a vidio if u like??

 alex 9 points

i have raced against lachlan's princess with my genesis with the same prop but with diffrent internal set up.
genesis:stock motor-120 amp birdy esc
2x 4500mah 40C 4cell batteries
princess:4072 2000kv turnigy inrunner-turnigy marine 180 amp esc
2x 4000mah 40C 5cell batteries
and the princess was about 5-7km/h faster

 phdpasso 101 points

If the Sea Fire has an axle of 3/16 inches, YES. I measured a 4.78 mm diameter bore. This is about 3/16 inches. I used in my Surge Crusher, that has a 5 mm axle. Of course I've drilled the bore to fit.

 Antonio 3 points

Pode sim e é a melhor opção, pos a que vem original quebra facil.

 Dehlizzz 4 points

i have this 2 motor S2445-3890 Brushless Inrunner (3890kv) with Hobbyking SS Boat Series 125A ESC and ZIPPY Flightmax 5000mAh 3S1P 30C battery i want to use this prop with 40 inches boat. Can i use this prop??

 Cabeça1977 30 points

Antonio vc tem a genesis, se sim qual o setup que voce esta usando? Att.

 Mar11 1990 points

thanks for asking for me mate ! U didnt need the credit that i gave u before...but i wont mind u crediting me now !! Many thanks any way

 Mar11 1990 points

thanks !!

 Micho69 273 points

I think that shaft diameter is 3/16 in/4,7 mm.

 Mel279 171 points

3/16 0r 4.7mm

 Abdulhadi 3 points

diameter = 40mm pitch = 40mm = 1.57", 1.4 x 1.57 = 2.198 shaft diameter not sure about it, but most props of same size comes with 3/16"

 baddevil 11 points

BRO MEL...ngam x ni klw pki kat gen aq...

 Mel279 171 points

boleh pki, tpi kene pki adapter 4mm-3/16 or 4.76mm. Shaft genesis ko tu 4mm kan?

 baddevil 11 points

YG 4MM TU DH PATAH...ni br nak order dr chai set 5mm pny...prop ni aq dh order dah...

 Mel279 171 points

I think is the same as octura x440

 __boss 38 points

when will this be back ???????