300x vs 300cfx

[jmtyndall]

My understanding is that the only difference in the powertrain is that the cfx has an 11t pinion and the 300x has a 9t. And the 300cfx is heavier.

So given that the 300x is boggy with a 9t and lighter airframe, it would stand to reason that the 300cfx would be so boggy that it would be nearly unflyable.

Yet when I watch the videos, it's not that way at all. Can I just swap an 11t onto my stock motor for similar power to the cfx without more bogging?

[Nelsonisms]

You hit the nail on the head. Sure you can go up to 11T but it will bog more easily reduce flight time. Videos can be deceiving. There's no shortage of threads with the same sentiment of needing to put a more powerful motor in the CFX.

[Soccerjay]

Originally Posted by jmtyndall

My understanding is that the only difference in the powertrain is that the cfx has an 11t pinion and the 300x has a 9t. And the 300cfx is heavier.

So given that the 300x is boggy with a 9t and lighter airframe, it would stand to reason that the 300cfx would be so boggy that it would be nearly unflyable.

Yet when I watch the videos, it's not that way at all. Can I just swap an 11t onto my stock motor for similar power to the cfx without more bogging?

Maybe but the motor won't be able to keep up per se, it might not be powerful enough to maintain such a high rpm and it's not built for this purpose so heat will be a problem and it's overgeared so it will lose a lot of flight time plus the HS will drop flight time, I'm flying my stock one on 100% flat and I can big it easy but it also flies really hard moves with ease, it's not a bad Heli in stock form, if you want more power I'd upgrade the motor but you could try the pinion and see how it goes

That being said I'm building a 100% modded 300x with a turnigy 2215h at 3600hs governed

[jmtyndall]

Yeah but the cfx runs the same motor on a bigger pinion. I understand losing flight time and all, not a concern for me. But the 11t would allow me to govern it

I just don't want a 300 running the same headspeed as my 450s!

[Nelsonisms]

It really just depends how you like fly. The bigger the pinion with that motor, the more coordinated you need to be with the collective management. It's not going to be a crazy smack 3D setup but it will work.

[Soccerjay]

Originally Posted by jmtyndall

Yeah but the cfx runs the same motor on a bigger pinion. I understand losing flight time and all, not a concern for me. But the 11t would allow me to govern it

I just don't want a 300 running the same headspeed as my 450s!

Okay then why not, I thought you were going for 100% in that case you're good

I need my 3600, the current 100% on my stocker is not enough for really hard moves, it just bogs way too much and I'll need the extra HS for the extra weight

[jmtyndall]

Well step two is to just get the eox lol

[Soccerjay]

Originally Posted by jmtyndall

Well step two is to just get the eox lol

That'll do it, but the 2215 is a 450 motor so it has all the punch you could want, and just saying I run 3000-3200 on my x3 but my 300x is well over that at 3600

Usually as size increases headspeed decreases

[jmtyndall]

This I know. I run my 450s at 3400 and 3600...so I was imagining 3900/4000 on the cfx

[Nelsonisms]

4S is the way to go for high headspeed if you ask me. That way you can get up around 4000 RPM and still have halfway decent flight times.

[jmtyndall]

What motor? Looks like the eox on 4s with a 10t will be able to target 3600-3900 rpm.

Any of the hobby king motors a good fit?

[GravityBlows]

Heres a CFX video I shot the other day. Factory motor, pinion,esc. Smooth on the sticks, its got plenty of power. This is a video general flying, not smack beating. Plenty of power for that. Turn up the speakers. Not boggy. http://youtu.be/rfaen1GzWO4?list=UUp...E13D5-kjBkEaeg

This video is kinda pounding on it same setup, different blades. Both videos pitch is set at 13.5'. http://youtu.be/dYlR2JBxBLM?list=UUp...E13D5-kjBkEaeg

[jmtyndall]

Thats what I'm talking about. Same motor as a 300x, with a bigger pinion, and more weight.

If 300x bogs, then cfx SHOULD bog worse

[GravityBlows]

Just showing you how it is. I HAD a 300 v1, it was a DOG. I was expecting that with this..much to my surprise. Its got decent power. My collective management is pretty good, don't get me wrong..you can bog it...but this setup with the stiffer head dampers its much less "soft" than the 1st version 300x. These videos were taken with PULSE packs. I run more pitch too, they recommend 12 ( I think ) Im at 13.5 I don't have to pitch it so hard to make it act like I need it too. I just STAB the collective and back off it quick. I found running lesser pitch, I had to lay into it...and keep it there longer causing more bogging. 13.5 just feels right to me in this Heli.

[ToddMcF2002]

You are very smooth on the collective even in the second vid. Those hard on the sticks are going to bog it and upgrade to motor instead of working the collective within its capabilities. Plenty of videos out there showing it bog to prove that. Its not a powerhouse but it certainly has a enough as you've clearly demonstrated. Nice flying!

[GravityBlows]

Well you guys know, theres a collective limit to all these heli's. For a full on smack flyer (I'm not) it needs more head speed..and governed esc. General flying and 3d stuff...its really not bad. I fly a few hundred flights a month...mainly micros (450 size and down), you get a -feel- for them after a while. What you can and what you can't do with it collective wise. Thanks for the compliment I love my micros. Heres a video of hard pitching...playing in the sand, same set up. http://youtu.be/QIE0FDv5FPs?list=UUp...E13D5-kjBkEaeg

[Livan75]

Originally Posted by jmtyndall

What motor? Looks like the eox on 4s with a 10t will be able to target 3600-3900 rpm.

Any of the hobby king motors a good fit?

If I remember correctly Luca said that EOX cant take 4s, maybe its just "safety" but with 13T it can run ~4000rpm gov on 3S...

[jmtyndall]

The website now says 3s/4s

But I got a couple hyperion motors. They've been tested and were on clearance. 1000mah 4s batts and a talon 35

[Livan75]

Originally Posted by jmtyndall

The website now says 3s/4s

But I got a couple hyperion motors. They've been tested and were on clearance. 1000mah 4s batts and a talon 35

Ah, didn't know that... pretty sure thou that it was rated 3s only when it came out, maybe changed it to be able to run mental head speed like Tareq is doing on his oxy3 with any flight time

[Varc]

Doesn't the CFX have more carbon-fiber parts also?