450 9t Pinion

[Matt]

If I go to a 9t pinion will I get longer flight times?

I’ve got

2010kv motor
22.2 v battery
121t main gear
12t pinion

 

[fran11784]

Looking at what you have there I'd say you going to slow down your head speed by dropping a couple of pinion teeth thus longer flight time, in theory, yes. With that setup you have now that little bugger will be screaming...lol

 

[murankar]

Generally speaking yes it will give longer flight times. These if nothing else changes.

Your also increasing torque which will help with governor recovery.

On a 360 / 450 a decent headspeed is right around 3100 rpm with about 13.5 - 14 degrees of pitch. That should get you around 6 minutes of light flying. Maybe 4 with hard flying.

 

[Matt]

I’ve got to program the ESC on this.. I’m guessing I need one of these?

Hobbywing 3 in 1 Professional Program Box For Platinum Series ESC - US$29.45 - Banggood Mobile

 

[D.O.G.]

If you want to save a dollar and not wait on oversea shipping you can get it at anything heli.

 

[murankar]

Or stick program it. I have never stick programmed so finding know how rough it is. Some folks can stick program in just a few minutes.

 

[Tony]

Careful with those 9 tooth pinions, they are known to crack because they are so thin. On a helical cut gear, I would not go under a 10 tooth.

 

[Matt]

I did read that somewhere, that the 9t pinions are likely to crack. I’ve seen it a couple places. I’ll go with the 10t. It’ll be more headspeed and I won’t have to worry about a crack. The 9t pinion would have had real low headspeed, which is what I wanted, because I’m just doing forward flight. But if the 9t pinions crack then a 10t pinion would be better and not too much more headspeed then the 9t

 

[Tony]

Just setup the governor to your desired head speed and the extra will just be overhead to help keep the gyro and motor working properly together.

 

[Matt]

I just looked on anythingheli and they have a whole section for Scorpion. XNova motors any good? They’re probably for more high end heli’s

 

[Tony]

XNova are fantastic! Top of the line as far as I'm concerned.

 

[murankar]

Scorpion and xnove are the 2 top brands. I love my scorpions but I feel xnova is better.

 

[D.O.G.]

I have Xnova motor on my Gaui X3 and that bird is bad ass. Just mu opinion.

 

[fran11784]

I love my scorpions but I feel xnova is better.

Ditto on that. Xnova's seem to run much cooler then all others. IMO their even better then the Kontronik's....