Raptor 60 V2
Well, if everything
had gone to plan I would not be writing about the Raptor 60 at this point in
time. I would be writing about my TSK Acrostar and telling you the benefits
of a full metal heli and about the precision from a more precisely built machine!
That would be the plan. However, thanks to gravity, dumb thumbs and a general
moment of brain fade, the Acrostar lies in a cardboard box in the garage ready
for the ceremonial burying. This is the first lesson to be learnt, metal bends.
The damage didnt look bad, but it was a case of lots of little things
adding up to quite a bit.
The tail boom was not bent, but pushed up inside the heli 2-3cm. Head bent,
tail bent. Etc etc .
So after a bit of an add up I found that for the same price as repairing the
Acrostar I could buy a new Raptor 60V2.
The Acrostar after its crash.
was a very good model, although the head was difficult to set up and it only
liked a certain head speed. To high it shook, to low it nodded. It did fly very
well, nice and fast, very smooth, and it loved BIG loops and slow rolls. It
won its first outing in Sportsman despite my nerves. Sniff, its dead.
So enter Raptor 60V2, stage left.
I decided that I was in this for fun and not for glory, so binned the idea
of buying another expensive heli (at the moment). Sure the Vigors and Calibers
are very nice, but I could not bring myself to part with that sort of cash to
purchase one, let alone fly and repair it when it goes in (and it will). You
buy it to fly it, not put it in cotton wool and look at it all day. (Or do you?).
I found the Acrostar had me shaking nervously enough as it was. Then there is
the Raptor 60. Cheap, some say disposable J. But is it just a cheap, prehistoric
Velociraptor, as Hirobo say in there ads for the Sceadu?
Well, after owning a Raptor 30, and having a good run with it, I thought Id
give it a shot. A few minutes on the Internet one Friday night saw an order
placed withe Stephen at www.cyberheli.com. Three days later and a package arrived
at work. Two nights later it was assembled ready for the radio.
I think Im going to like this one. The kit is all in numbered bags, with
good instructions as is pretty normal with most manufactures. I wont go
into building detail cause its very easy, with everything fitting as per
the instructions. There is also an ARF kit available that is 90% assembled.
The Raptor 60 uses metal upper and lower side frames, while using plastic for
the bearing blocks, tail boom bracket and cooling fan subassembly. This give
a very strong unit with plenty of support to areas of high loading. Using the
plastic avoids using metal angle brackets, or putting bends in the metal frames.
The landing skids mount to plastic rear frame and to the cooling fan casing
at the front. Metal frame spacers are used to allow the frames to be tightened
securely without distorting any plastic components. The whole frame is light
and easy to work with. One complete side can be removed without upsetting the
gear mesh or engine alignment. Slots have been added in the frames to allow
for different gear ratios and for different engines in the 60- 90 classes.
This is rather beefy, compared to my Acrostar. With 670 blades the total rotor
diameter (1545mm) is more than my Acrostar with 680s (1535mm). The head
is made of composite (plastic). It is also a large version of the 30, with the
exception that the pitch link is on the leading side of the grip, whereas the
30 are on the trailing. This caused a moment of confusion when checking things
out, as the pitch increases when the swash plate moves down and decreases when
the swash plate moves up, opposite to the Raptor 30. I have now started to watch
what the blades are doing when checking my radio, and not looking at the swash
plate. I have 13+ /10- Pitch range with no binding, so there is a good range
available to any flying style. The main shaft is a 12mm hollow type with the
main shaft locking ring screwing into the main shaft with two 3mm socket screws.
That should stop it from going anywhere! The head is dampened with two large
dampening rubbers and the main blade grips has dual ball bearings with a single
thrust bearing in each. The Blades supplied with the kit are 660mm woodies with
a 16mm blade root. As much as I dislike wooden blades, this pair seemed well
made and had identical C.G. and weight. They needed no balancing at all. Thunder
Tiger have included a plastic clip-in spacer, which is for use with 12mm blades,
as part of the kit. I will be using 670mm SAB blades. The flybar is on top of
the blades allowing for a shorter main shaft. Overall the head is very strong
and I wait with interest to see how it behaves.
The Raptor uses mechanical mixing with one servo for each operation. The swashplate
is supported on four sides with good amounts of movement available. The Acrostar
used 120deg CCPM that showed a small amount of interaction and required three
good servos of the same type and Swash plate movement was restricted due
to binding in the head. With the mechanical mixing there is no interaction and
it allows for different servo combinations to be used. Suitable for both the
beginner budget and those without one.
The tail rotor pitch set up is basically an enlarged version of the 30. The
tail pitch control lever has a good fit to the ball link giving no slop at all.
The tail gearbox is nice and simple with the two gears meshing well with very
little friction. Shim washers were supplied, but not needed. The supplied tail
blades are good to begin with, but I have heard that they are not up to Fully
Blown 3D flight. Mind you, Im not up to that either so no worries there.
Standard tail rotor diameter is 260mm so larger diameter carbon blades would
sort that out.
The Raptor 60 uses the Constant Drive Tail Rotor System from the Imperio. The
stainless\ aluminium drive shaft is a nice snug fit through the support bearing
in the tail boom. The drive from the main rotor is via a constantly driven gear
to a drive pinion set which is mounted in the tail boom bracket. The gears are
large and have a good amount of contact area that has a preset gear mesh. This
was spot on, and allows for a very free running system. Again the whole assembly
is supported with a number of bearings.
The OS61SXH-WC came straight from the Acrostar and after fitting the fan and
clutch for the Raptor slotted straight in without problem. I did have to cut
the canopy slightly to allow for the bigger muffler I had on the Acrostar. Better
to cut a $40 canopy than a $200 muffler!
I am using Futaba 9202 servos for all swash plate controls, 9001 on throttle
and a Futaba 401 gyro with digital 9253 tail servo, PCM receiver. What I would
call a good middle of the road set up.
|Raptor 60 V2
|Main Rotor Dia: 1545mm
||Tail Rotor Dia: 260mm
|Gear Ratio: 1: 9.3: 4.65
||TT Weight 4668g / Mine was 4830g with 1700mah Rx pack
Well, so far so good. The hover is Very stable, even more so than the Acrostar.
The head appears to be very good with no nodding or shaking at ANY speed. I
have run it at many different speeds and it seems happy to stay where I put
it. Obviously as the speed increases the response increases and at a higher
speed in Idle up it becomes very lively. Forward flight is good with no pitching
and it shows a good turn of speed. The balance point is right on the main shaft,
which is good for 3D, however I will add some weight to make it slightly nose
heavy to help the F.A.1. flying style I want to use it for. Big loops and rolls
The woodies are fine & track well. I have since removed them and fitted
the SAB 670 blades. This required drilling out the blade root bushes to 5mm
as the standard SAB blades are 4mm. To my surprise the SABs needed no
retacking & were bang on. This shows that the original woodies were
a good set with two identical blades supplied. The pitch & throttle curves
have both been dropped back a few points due to the efficiency of the composite
blades. The mechanics are smooth and quite with no apparent vibrations.
I like it! It certainly flies very well and shows plenty of potential. It shows
incredible value for money, and certainly out specs some more expensive machine
as far as features go. I guess now its just a matter of burning some fuel
and putting some time on it to see how it stands up. I do not foresee any potential
problems and think that Thunder Tiger have a real winner on their hands with
this model. Most manufactures have responded to the Raptor 30 with several new
models being released lately to compete. I wonder what the 60 market has to
come. Top marks to Thunder Tiger for stirring the pot again.