Shopping list... any advice / confirmation ?

[kkwait]

Hi everyone,

I'm planning on buying a Hurricane 550. I tried to find every useful information I could need about motors but it's not always very clear, especially for a French speaking person ! ;)
I won't do any 3D, just "regular" slow and fast flying an some gentle loops and rolls...

Here's my shopping list :

- Hurricane 550 Pro 3d combo http://flying-hobby.com/catalog/product_info.php?cPath=3_30_36&products_id=1825

I'll ask Fung if it's possible to switch the GY401 for a LTG2100 (what do you think ?)
And what about the motor ?
From what I've understood, the best for what I want to do would be :

.Z20 980KV (or 1470 ?... not sure)

.Is the Gaui 75A ESC ok or should I go for an Align or else ? (I have the Gaui 12A on my EP100 and it works pretty well, a little hot but...)

.The BEC... same question, is the Gaui one ok ?



- Crash Parts Set http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=1569

- maybe an extra Main Blades pack (wood) and another Tail blades pack...



Thanks !! :)

[mysticmead]

the Gaui BEC is fine, it's the exact same as the Align BEC.. the Gaui 75a ESC should be good as well for your use. Z20A-980 is what you want for the motor. GY401 is a great gyro and easier to setup than the LT2100.. the crash kits is a good kit to have on hand along with a couple extra sets of main blades, tail blades don't normally get broken in a minor crash and you'll have an extra set in the crash kit. I would also order a couple extra main shafts, flybars and feathering (spindle) shafts.

[worldofmaya]

You can't compare a Align Esc with Gaui Esc... the Gaui is much better. Governor and Align Esc is a no-go!
The Z-Power is much more effective and runs cooler! You'll get longer flight times. 1470KV has lot's of power. If you're doing sports flying the 980kV works nice too with less power consumption. Exchanging things is most the time no problem!
Don't know which upgrade are part of this kit but these two upgrades are really worth it's money:
CNC Elevator Lever No: 204614
CNC Pitch Roll Arm No: 204612
The CNC Swashplate Guide No: 204677 is something nice too but not as necessary as the arms and the lever!
-klaus

[kkwait]

OK, thanks.

I forgot to ask about the gears... Will the stock gears "fit" with the Z20 980KV motor ? (the motor provided with this combo being the Gaui 1100KV)

[mysticmead]

yes, the stock gears fit the z20A..

[skydude]

Don't know which upgrade are part of this kit but these two upgrades are really worth it's money:
CNC Elevator Lever No: 204614
CNC Pitch Roll Arm No: 204612
The CNC Swashplate Guide No: 204677 is something nice too but not as necessary as the arms and the lever!
-klaus

What is the advantage of these parts?

--

[mysticmead]

the CNC pitch/roll arms and elevator arm allow you to NOT offset at the servo wheel. just makes it easier to set it up. the swash guide.. that makes sure the swash doesnt twist (anti-rotation)..

[kkwait]

Technical question : what's the point of the offset on the servos and control levers ?
Is it for a more accurate control / less "loose", "lag" (sorry, don't the terms in english :oops: ) ?

[mysticmead]

well...IF this were a plane and not a heli, then yes, it would be a good thing to have the offset.. on the heli, it serves no purpose at all and only makes setting the heli up a lot harder than it needs to be. When Gaui designed the heli this way they may have thought that since it was good on a plane it would be good on the heli... oh well.. at least there are alternatives such as the CNC parts to correct it.. as well as these to make setting up the offset easy.
http://www.readyheli.com/Custom_Heli_Parts_Spektrum_Carbon_Fiber_Servo_Do_p/chp-g012.htm
http://www.readyheli.com/Custom_Heli_Parts_Futaba_Carbon_Fiber_Servo_Doub_p/chp-g010.htm

[mjdee14]

make sure you are getting a 14t and 15t pinion....I find the 14t works very well with the Z20-980...others like the 15t...

If the kit doesn't have a spare one way bearing OWB order one, they slip or break...and you'll be grounded.

[dave26985]

Yes, but make sure you order the 20tooth OWB to replace the stock 19 t, as it is much beefier

[kkwait]

"beefier" ?! What do you mean ? :thinking
I do love meat but...;)

So, the "perfect" order for what I want (smooth flying, gentle loops and the longest flight time possible :lol: ) would be :

- Hurricane 550 Pro 3D Combo http://flying-hobby.com/catalog/product_info.php?cPath=3_30_36&products_id=1825
(with Z20A 980KV http://flying-hobby.com/catalog/product_info.php?cPath=18_76&products_id=1018 )

- Crash parts set http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=1569

- 20T One way gear assy http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=2068

- 14T Pinion gear http://flying-hobby.com/catalog/images/901401-Pinion%20Gear%20Pack-14T.jpg

- Extra main masta pack http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=124

- Extra flybar http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=120

- Extra spindle shafts http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=116

- Extra main blades pack http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=1189

Is it right ? (Thanks guys !)

[mysticmead]

that should be a great setup...you'll love the heli

[worldofmaya]

Don't forget the CNC lever and arm! A must-have! No offset and much more stable than the plastic one!
-klaus

[skydude]

IF this were a plane and not a heli, then yes, it would be a good thing to have the offset.


I have been wondering for some time also, what is the design goal of the offset? You say it is good for airplanes. In what way?

My servo horn looks like a cheese grater after 5 hours of trying to match up that offset.

--

[skigolfmike]

My servo horn looks like a cheese grater after 5 hours of trying to match up that offset.

Really? The big wheel with JR servos actually had holes that matched the control arm. The one arm that I did drill, took about 5 minutes to make using the Finless method.

Here's a list of things I'm about to order for spares:

550 Wood Blades
0 Degree Alignment Tool
CNC Stop Plate
Flybar
Feathering Spindles
Main Shafts
Tail Rotor Blades
Skid Dampers
Tail Boom
20T OWB Gear

[skydude]

Really? The big wheel with JR servos actually had holes that matched the control arm. The one arm that I did drill, took about 5 minutes to make using the Finless method.


Yeah, that would be nice. Futaba didn't have that option. Twas a pain for sure. Probably should have bolted the crank to the horn as recommended. Even then I don't think it would have hit the spline exactly and would have still needed trim. I had it stuck in my head I was going to get it to zero trim. Kept thinking 'I am am going to get it this time'. Before I knew it it was 1:00 am.

[xodarap1]

kkwait, The only thing I would add to your shopping list would be a 16T pinion matched with 500mm blades for that Z20A. (Oh.. and a tail spindle shaft)

With the 16T at lower RPM you can get some extra flight time for nice easy flying. It's amazing how well this heli performs even at lower head speeds for easy cruising around. When the pitch curves are tweaked a bit, the Z20A does perform well with the 16T.. (but not with larger than 500mm blades). It works well with the 500mm blades even though it has less torque due to the slightly higher base head speed.

skigolfmike, I have two brand new sets of Gaui 550mm wood blades (PN# 204303) here sealed in the plastic packaging that I would like to sell or even trade for 500mm wood blades. I have the short boom and run carbons most of the time anyway, so these blades are looking for a new home. If you or anyone else wants them at cost + shipping just let me know.

Steve

[mysticmead]

I have been wondering for some time also, what is the design goal of the offset? You say it is good for airplanes. In what way?

My servo horn looks like a cheese grater after 5 hours of trying to match up that offset.

--

here's a link that explains why an offset is a good thing .. but only on control surfaces that move.. like a rudder.. or elevator in a plane.. on a heli, it's pointless..
http://members.cox.net/bdfelice/Ackerman/ackerman.htm

[kkwait]

kkwait, The only thing I would add to your shopping list would be a 16T pinion matched with 500mm blades for that Z20A. (Oh.. and a tail spindle shaft)


Ok, so... 16T pinion instead of 14T...
The kit only comes with a 15T pinion, right ?

Tail spindle shaft... you mean Tail Output Shaft http://flying-hobby.com/catalog/product_info.php?cPath=3_30_37&products_id=1183 ?

And for the servo arm / lever issue, anybody knows if the DX821 servos in the combo now come with these large wheels ?
If not, I can add only the CNC elevator lever to get rid of the offset... as it's possible to do so on the aileron levers by moving one ball...?!

[xodarap1]

I wouldn't just get the 16T, but it would be nice to have one in addition to the 14T and 15T so that you can experiment to find the best pinion. It's well worth taking the time to find the sweet spot with the pinion/throttle/pitch settings that will work best for you to maximize your flight times based on YOUR flying style. It could mean a minute or more of extra flight time when you find the best setup for you.

Yes, that is the tail output shaft I meant. It's cheap and nice to have on hand.

I'm using the CNC levers with the the included DS821 servo arm (the middle holes) and it works fine. The CNC levers are the way to go.

If you need pictures to help in putting it all together, just let us know and we'll post the pics for you.

[kkwait]

Are these the CNC levers ?
http://flying-hobby.com/catalog/product_info.php?cPath=3_30_38&products_id=1409

They look pretty much the same as the stock ones... with 4 holes for the balls.

I think I'll go with the ready-heli CF spektrum arms and keep the offset (if it was designed this way, maybe it's not useless)...

[worldofmaya]

Yes and this one http://flying-hobby.com/catalog/product_info.php?cPath=3_30_38&products_id=1021
Pitch/Roll have 4 holes you have to take the two diagonal through the middel. Have a look there:
http://www.gaui.com.tw/en/H550_Upgrade_Parts_Assembling.pdf
-klaus

[mysticmead]

those are the upgraded arms.. they do look similar, but on those arms when the balls are place in opposing corners, the offset is gone. the only other benefit of the new arms is.. they're not plastic and therefore are stronger and won't flex. that being said.. using the CF offset plates from readyheli makes setting up the offset very easy for a lot less money. even though the offset was designed into the stock setup it serves no real purpose on a fixed surface.. it was intended for a moving control surface like a rudder or elevator on a plane.

[worldofmaya]

I heard at least here from two pilots with offset arms (right setup no bending) that their plastic levers broke. I never used them... setting up isn't that hard, just a little geometry. But I wouldn't trust them...
-klaus