Shorter 550 anyone ??

[Mikej]

Has anyone tried the short boom and shorter blades yet - any difference to how it flys ? longer flight times ?.

Cheers,
Mike.

[Raydee]

Shorter than the 550 Pro kit and the 500mm blades?

[Mikej]

Yep - there is a kit for 475mm blades and the boom is about 50mm shorter plus shorter belt

[probe3]

I'm planning on trying the short 475 conversion...but still waiting for the shorter Gaui tail control rod to get here.

[quickster47]

During the last couple of weeks, after a close encounter of the worst kind with the tarmac, I have been running the short boom with 500mm blades and 475mm blades and must admit I like the way looks now and the way it flies, I think, is much better.

The short boom makes the Hurricane look more in proportion.

Carl

[concept1]

carl,

is your Hurricane Stock or what motor? also can you give any comparisons between the 500 and 475 blades? roll rate, climbouts, RPM, head loading, flight times, etc....
I am really looking for someone who has flown the shorter 475 or even the 470 blades. My guess is the stock motor ecs might do very well with the 475 blades?

Also does anyone have the lenght of the short boom in Inches. I have 2 long booms I would like to cut instead of ordering a new short boom.

thanks
Jon

[quickster47]

Jon,

I am running FP 3S 2500MaH battery packs with the original OEM motor, all chrome can. With the longer boom and 500mm blades it seemed sluggish (sic). I did try some Hecell 3S 3300MaH batteries for a few flights and it was mucho better. This was all the long boom and 500mm blades.

Using the short boom, which I made myself after I ordered one (also made my own servo control rod), and the 475mm blades with the same motor and FB batteries, the Hurricane feels like a new heli. It has better climbouts and better performance IMHO. Right now I am only doing basic flying and just now doing a few loops and rolls when I get brave enough so I can't comment on that aspect. But for me the short boom and blades feels right.

Carl

[john2]

carl,

is your Hurricane Stock or what motor? also can you give any comparisons between the 500 and 475 blades? roll rate, climbouts, RPM, head loading, flight times, etc....
I am really looking for someone who has flown the shorter 475 or even the 470 blades. My guess is the stock motor ecs might do very well with the 475 blades?

Also does anyone have the lenght of the short boom in Inches. I have 2 long booms I would like to cut instead of ordering a new short boom.

thanks
Jon

Hi Jon,
Short boom is 22.5 inches. Also remember that you have to have the shorter belt.

John

[Raydee]

What 475mm blades are you guys running?

[concept1]

thanks,

I am also running the FP 2500 packs and also the 2170's all stock with 500mm carbons. mine flies very nicely except doing rolls and flips it really loads the head and it looses head speed pretty quick. My options are either upgrade motor and speed control, which then i will loose flight time,or try some shorter blades. I will order the short belt today and give it a try with shorter blades. My one concern was roll rate. do you recall if it rolled faster or slower with the 500mm blades? My Trex rolled faster with longer blades, but I was able to raise head speed to get good results, but with the Huricane I am already running 100% throttle, and If I up the pinion I will most likely be right back to where I started with the 500mm's
Also My long boom is 24 3/4 so I need to cut off 2 1/4? thats more then I expected.
Any comments?

Jon

[quickster47]

What 475mm blades are you guys running?

The 475mm blades I have are the Gaui woodies. They work pretty good.

Carl

[probe3]

For the people flying with shorter boom... did you leave the tail servo in the frame or move it out to the boom ? I have both FP 2170 and 2500 lipos which I'm going to continue to use.

Can anyone recommend tail boom servo mounts for the Gaui short boom ?

[celter]

Why would you move the servo out on the boom? The Hurricane is already a bit tail heavy. And by the way, the shorter Gaui tail control rods are now available from Readyheli.

[Mikej]

During the last couple of weeks, after a close encounter of the worst kind with the tarmac, I have been running the short boom with 500mm blades and 475mm blades and must admit I like the way looks now and the way it flies, I think, is much better.

The short boom makes the Hurricane look more in proportion.

Carl

Quickster,

Does using the 475's affect stability at all ??.

Thanks,
Mike.

[bclong21]

I just started using the 475's with the short boom and it feels MUCH better- easier to control as the tail doesn't want to dip everytime you pull on the elevator. The response is better and more accurate in a hover- it feels more like my 450 xl with the hard red dampeners in the head now. I agree with the others that it looks much more in proportion with the short tail also.

[Stallion]

Today after three successful flights with the long boom and 3200mAH packs (still tail heavy) i converted to the short Boom but still with the 500 RCP carbons. I thought i shold be better balanced now but what the f***
is this? Now it is heavy on the nose with these 3200 mAH packs. I put my 2500mAH FP 25C packs on and now the CG is right where it should be. Still charging so no in flight experience!

Does anyone know how to get this bird balanced with heavy packs???

Don't get me wrong i really like this beast. I can fly it if it is tail or nose heavy. I only have to trim it but i have read when it comes to loops and rolls it is better to be correctly balanced! especially for a beginner like me!

P.S.: i have to say it looks quite nice with this shorter tail!

[odieser]

I am flying with air thunder packs (2200 Mah) with the short tail and the 500mm woodies and It is perfect cg no trims required I can hands off the sticks for a few second no problem

[Mikej]

Today after three successful flights with the long boom and 3200mAH packs (still tail heavy) i converted to the short Boom but still with the 500 RCP carbons. I thought i shold be better balanced now but what the f***
is this? Now it is heavy on the nose with these 3200 mAH packs. I put my 2500mAH FP 25C packs on and now the CG is right where it should be. Still charging so no in flight experience!

Does anyone know how to get this bird balanced with heavy packs???

Don't get me wrong i really like this beast. I can fly it if it is tail or nose heavy. I only have to trim it but i have read when it comes to loops and rolls it is better to be correctly balanced! especially for a beginner like me!

P.S.: i have to say it looks quite nice with this shorter tail!

You could move the rudder servo onto the boom using the Trex 600 boom mount - that should help with the balance with the 3200 packs.

[Stallion]

So back from the flight test! With the heavy 3200mAH packs and nose heavy Heli. But i had another problem i couldn't fix. I had Tail Vibrations really bad. So i adjusted the belt tension back and forth but nothing worked. I have at spool up light head vibs but at normal headspeed it is gone and no problem with the longer boom.

Any ideas were the vibs could be coming from? I had a bad crash the other day. But i changed nearly everything. Frame; bearing; shaft; spindle; Main gear; tail-shaft; blades; fly bar.

Thanks guy's for the input. If i get the vib's under control i will get a servo boom mount to adjust the CG. But for now i will convert back to the long boom and.

[Fredrick]

Feel sorry for you stallion:(
did you check the bearings and the skrew/rod that goes thrue there???
i had the same problem, tokk of the hole set of tailbladegrips from the tailshaft, wiggled it forth and back a few times and saw that the round metall that keeps the bladegrips together,the one you atached to the tail shaft was turning.
check it out.

[Stallion]

thanks for your condolences! :-)
I have the T-REX 600 Tail hub and blade grips to prevent tail kicks and i flew with them after the crash and the long boom no problem. I think i may have a bent rotor head (the thing that holds the yoke) and i will check the 8mm one way bearing shaft as well. I hope the motor didn't get punched. the noise is louder then bevor i think. I will tear it down again and see.

I will report if i find anything unusual!

[bclong21]

check the roller for the tail belt- Mine was freezing up and was causing a little vibe because it burnt the bearing up.

[ianjh123]

Stallion, I have the tail vibration problem. I have tried replacing everything, but nothing fixes it. Even Trex tail grips. It happens at about 1800rpm for me, so I can fly at 2200 with no problem until the battery voltage drops, the head speed drops, and the vibrations starts again.

I have a Trex CNC tail to replace it but the Trex belt must be a slightly different pitch and I need to modify the Trex tail pulley to fix it. Work in progress, but the Trex tail is very nice quality wise.

[Stallion]

So guys i changed the first Gaui gear against a Revco 68T first gear and a Revco 23T pinion. During gear change i found a missing spacer on top of the one way bearing. i adjusted the back lash and testet is without blads an the short boom. Still vibrations at higher head speeds and at spool up. Switched to the long boom and only a second during spool up and the perfect. After the gear change i had cooler packs and esc and i think i can get another minute out of them. Revco Gears are the best!! And i moved the packs a little forward to get it more balanced. Still have to trim a bit forward.
Charging and flying tomorrow!!!!!

[Kepler]

I have now done the short boom converson and must say that the 475mm blades suit the stock motor power much better then the 500mm blades. Hardly any bogging during hard manuvers now and flight time has improved by about 1/2 a minute. Roll and stability is still very good including fast forward flight. The only thing missing is the initial pop but thats just for poses anyway.