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11-10-2005 07:49 AM  14 years ago
robogyro

rrNovice

MALAYSIA

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Hi! and Dear all Scale Heli Fans,
I used to own a white Hirobo 30 Lama and been reading alot of its in runryder forum.I want to share my opinions on this heli for all members out there.This heli look great both on your living room and in the air.It is
cheap to start off with in scale heli.Every Heli had it pro and cond but I have only been listening to the pro side of it.Here,I will tell you the cond and by no means offending the product or manufacturer but a matter of opinions and for all future owners to decide before buying.

My ex- Lama,new OOB, is a 2 bladed rotor, 2004 model, The white plastic is well made but unfortunately,it turn Yellowish in color overtime due to oxidation.

I used a new OS 37 eng,but it struggle to lift off terra- firma and you had to be careful with the throttle.Too rapid a decel and it drop like a brick. This engine is underpowered at 15% 'cool power' ,use 30% and you had a screaming engine!The truss tail assy is too heavy for this engine.

I upgrade to an OS 47,more power but heavier.I found it a bit better but the vibrations is terrible.It crack the hori-stab 0402337 and canopy 0402353.You can see the cabin 0402342 virtually "dancing" when doing a low fly by.Stick it up with 3m double face tape,nil help.Yes,I am using Ms composite blades 550,brand new.

I placed my 2700 nmh 4 cell batt on top of the fuel tank to keep the c of g in check but combine with the 47 eng weight, the rear plastics undercarriage 0402330,start to sagg! Not a pretty sight with a pretty heli.

This Lama is using the old shuttle meachanics and the tail rotor config
are really bad!
The push pull rod, hook up to the tail pitch lever 0402313 using adj-stopper 2526003 and tend to loosen it self overtime!. How much can you tightened and loctite a M3X3 set screw?


The ZS tail pitch plate 0402205 arm is soft and can flex. Couple with the pitch lever arrangement (no bearing)and you get plenty of slop.This heli is very difficult to set as it has a tendency to yaw and drift to the left.I am using a gy401 and s9254 for the tail.On Normal mode,no wind cond,it hold it tail straight but started to drift slowly on it own.On AVCS mode it hold for a while but in fwd flight. it start to drift on it own.

I think I had said enough of it "cond" points and I had spend more on upgrading by replacing the sloppy rotor head with metal stab,0402582,
metal washout 0402599,swashplate2530004,delrin gear 0402574 and added features using ball link on tail lever,radius arm 0402511,replacing the push pull rods 04022231 ,tailhousing 04121482
modify the tail push pull rod using steel rod and ball links etc ,etc.

I had tried to modify everything I can think off from the Hirobo Spare Parts List Catalog 2004, but not the tail as it had reach it design limitation.Sadly after spending much money and times
on it, I had decided to sell it off.Maybe the Heli is meant to stay on the shelf for your eyes only but not for performance when flying straight and level.

Maybe and hopefully,Hirobo will improve on it and bring out it flying potential.

I am planning to get the Schweizer which is using the same mechanics as the Lama but a least you can modify the tail rotor assy with 0403251 and 0402576 from the GPH346 set up.

As I say, this is only my opinions and any suggestions are most welcome for the pleasure of this hobby and all runryder members to share....

Happy flying
RoboGyro

Freya-Evo 90
Se 90
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11-10-2005 10:35 AM  14 years ago
Bjarte

rrApprentice

Norway

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Hmmm robogyro,it sounds a little bit strange to me that your OS 37 struggles with lifting the Lama off the ground. I have an OS 37 on mine, and it`s plenty enough power for scale-flying. I am using 15% nitro.

Bjarte
Norway
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11-10-2005 12:06 PM  14 years ago
robogyro

rrNovice

MALAYSIA

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Hi Bjarte,
This part of the world is real hot and outside ambient temp OAT,can
soar to 36 C at midday especially during the Hot season.
Couple with high humidity ,I believe the air become less dense,thus the
engine has to work harder to compess the air to gave the required torque/power.This extra work also increase the temp of the engine thus
overheat. 90 engines, no problem here.Maybe some one out there can gave a scientific explanation.

Robogyro

Happy flying.....
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11-10-2005 05:17 PM  14 years ago
Gstjohn

rrApprentice

Shreveport, LA

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yea your problems are really strange. I have the white new version with the hirobo/enya 36 in mine and with 30% cool power I can lift off in hot and high altitudes (5,000 ft ASL and 100 deg. F) here in colorado with plenty of power. I have never had a CG issue and I have heavily detailed the coclpit, engine and tail areas of my Lama. as for the tail control I have never had any problems with this setup at all. as for the shaking I would have suspect that the blade balance or head balance is off, because I have flown mine now for almost 2 seasons with no shaking issues. I even painted a set of fiberglass blades! I did of course balance everything perfectly.Greg "G-Dog" St. John, Team Lowerheli.com, Optipower USA, VP/ Powermaster fuels, BK Servos
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11-10-2005 05:58 PM  14 years ago
reddragon

rrElite Veteran

Brooklyn, N.Y.

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You're right about the WHITE plastic. Aside from the polypropylene plastic (milk jug) all white plastic will tend to "age and yellow" over a period of time especailly when subject to model fuels and the elements. The Hirobo Schweizer 300 has the same mechanics and has some of the same issues with slop. I did replace the stock swashplate with a metal one from Century on my Schweizer 300. The thin tail rotor pitch wire was replaced with a beefier one I made from music wire. I haven't had drift or power problems as mentioned. I have used the Thunder Tiger .39, OS .32 SX-H and the OS .37 as well. The tail is a bit lacking on both models but I guess it is also due to the age of the design. Hopefully Hirobo will update their line soon.Wayne - Fly it like you stole it! You're in good hands with Runryder!
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