Longest blades usable on a 450 Pro V2 without stretching?

[jarhart]

What are the longest main blades I can safely spin on a 450 Pro V2 without stretching it?

[alyon187]

325... good luck on finding anything longer than that

[Dylan Hudock]

325mm, anything longer and you have a high risk of hitting the tail blades

[Quad350qx3]

You can get 360 blade and cut it down to 330..... To much work and you'll barely notice the diff..... Just stretch it.

[jarhart]

Originally Posted by Dylan Hudock

325mm, anything longer and you have a high risk of hitting the tail blades

Is that 325mm from the root hole? The "325mm" blades I have now are measured end-to-end so they're more like 315mm.

As a specific example, could I safely run Thunder Power 325mm blades?

[alyon187]

Yes, bolt hole to til is 325. The black and white 3g blades are true 325 blades. Their actually longer than the old 3g blades that had the single carbon stripe on the trailing edge.

[jarhart]

Thanks for all of the replies. I ordered some of the Thunder Power 325mm blades, which are about 10mm longer than the "325mm" blades I have on it now. If my math is correct that gives me about 6% more rotor disc area. I'm curious to see if I can tell a difference.

[Quad350qx3]

you should feel a little more pop and float since your use to the feel of your shorter 325. Even blades of the same size can give you a slightly different feel.

[heliphlier]

I've heard of guy putting 350's on the 450 pro without stretching no problems. Here is a thread where they talk about Radix 350mm blades. I personally used to do it no problem. You can feel a bit of a difference especially if you use a wide chord blade.

https://www.helifreak.com/showthread.php?t=444085

[RC/DC_5000]

Yea I'd say Rail 326's.

They have genius marketing. Just that one little mm makes you think it might lift more. They may very well be amazing blades. For other reasons as well. They do seem to always add a few mm to "one up" the stock blades if you will.

Depending on how you fly it... you can always gamble with longer and longer blades. But if you're piro flipping, smacking and pulling hard G forces... Be prepared to watch your rotors collide.

Doing a few flips and pitch pumps with 350 blades has proven nothing. Its the G forces with aileron, elevator and collective inputs that will make them touch. Again, your success with depend on how you fly it. Most people don't like to gamble that way.

[gimbleguy]

Originally Posted by jarhart

What are the longest main blades I can safely spin on a 450 Pro V2 without stretching it?

Well since you mentioned safety, the recommended blades are 325mm on a 450 PRO(non stretched). Open up the main blades and measure the clearance between the main blades and tail blades. With mine from bolt to tip there's not much clearance, and I'm using longer fat tail blades. It's up to you if you think you can go with longer blades, I've seen so many helis explode(X3, 450 etc), using different blades. Remember the longer blades wont make you fly any better. That just comes with heaps of practice.

[Livan75]

Why is it so bad to stretch it if 325s isn't enough?!

[jarhart]

Originally Posted by Livan75

Why is it so bad to stretch it if 325s isn't enough?!

It's not that 325mm (315mm in my case) isn't long enough. I just want to try out different sizes. Who knows? I might want to go shorter instead of longer. I just wanted to know what my safe range was.

[boredom.is.me]

I know there are 335mm blades. Something is telling me that 345mm exist too, but I don't know.

Just stretch it. The heli feels so much lighter in the air. You can even say more graceful.

[RC/DC_5000]

I'd surely agree it will feel lighter, more graceful and more stable with longer blades and boom.

But the motor and battery will not agree. They will not be happy to draw more current under load and do all that work in 3D. 325mm on 3s is not some random number. Ever wonder why a 450 is not a 450? Why a 450 is a 325? They did that because thats the longest blade the 3s motor could reasonably swing to get the collective lift we want for 3D and still operate within temp/current specs.

Then the 6s 450 extended that number to 360mm. It's more a balance between motor ability and blade size. A bit more torque and power can swing a bit longer blade.

Of course you could hover around 425 blades if you could fit them... this logic I'm talking about is maximum all out 3D performance. A total balance with regard to every factor. 3s 325mm is pretty much the limit for all out performance and staying within specs.

[gimbleguy]

Originally Posted by jarhart

It's not that 325mm (315mm in my case) isn't long enough. I just want to try out different sizes. Who knows? I might want to go shorter instead of longer. I just wanted to know what my safe range was.

315mm?? Which blades are you using? The furthest I would go on a stock 450 PRO , is probably using Railblades 326mm, but these are fbl blades. Are you on FBL by any chance?

[jarhart]

Originally Posted by gimbleguy

315mm?? Which blades are you using? The furthest I would go on a stock 450 PRO , is probably using Railblades 326mm, but these are fbl blades. Are you on FBL by any chance?

I've been using the Tarot "325mm" blades, which are 315mm from the bolt hole. Yes, on an FBL head.

[gimbleguy]

Originally Posted by jarhart

I've been using the Tarot "325mm" blades, which are 315mm from the bolt hole. Yes, on an FBL head.

Yeah I see what you are trying to ask now. Probably best to start a new thread.

Topic: 450 PRO(stock) Main Blade Measurements: Bolt hole to tip.


In the thread: Shopping around for the longest 325mm CF Main Blades. Please help, and give the specs of your type of blades you use.

[gimbleguy]

Originally Posted by jarhart

Thanks for all of the replies. I ordered some of the Thunder Power 325mm blades, which are about 10mm longer than the "325mm" blades I have on it now. If my math is correct that gives me about 6% more rotor disc area. I'm curious to see if I can tell a difference.

length, width, weight, airfoil, may affect power usuage, but in return you may get better control. Hence they made the 6S 450 stretch.

[jahrasta]

i have use Curtis 350 fly great