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Old Jun 16, 2014, 04:11 AM
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New Product
RJX Vector 700 coming July 4 2014







Rjx vector 700 (2 min 3 sec)

IMG 5891 (1 min 58 sec)

Vector FF in thailand (2 min 12 sec)


http://helidaily.com/rjx-hobby-vector-700-coming-soon/

Another heli I have to get...
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Old Jun 16, 2014, 11:06 PM
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Not crazy about the full fuse or the landing gear, I'd prefer skids and a canopy.

I'm building an RJX X-Treme 600 right now and the quality is at least as good as Align, probably better. One thing I like about it is that RJX uses oversized bearings on everything, the front tail drive bearings are as big as the mainshaft bearings (6x19x6 vs 10x19x6)

The only problem with RJX helicopters is that getting parts for them in the US is a pain in the butt. If you live in Europe you're set but RJX seems to have been cursed when it comes to finding a good US distributor.
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Old Jun 17, 2014, 05:29 AM
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I absolutely love the full fuselage on the Vector...not only does it look cool but the shape is also unique...actually looks like a shark from head to tail. The airframe looks like a unique design too. I wonder why they went with the longer main pulley belt though. Anyway I like the anti-rotation link as well as the head design. The precut cooling vents for the ESC is sweet. Definitely going to get one of these before I get a Mostro and a Goblin Speed.
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Old Jun 17, 2014, 02:13 PM
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Originally Posted by TheKingPhisher View Post
I wonder why they went with the longer main pulley belt though.
Because the belt belt drives an intermediate pulley which directly drives the tail belt pulley and the pinion on the main gear.



12S is more efficient but you have to use a motor with less efficient windings (thinner wire, more turns) High KV motors are more efficient (thicker wire, fewer turns) but you have to use 6S which is less efficient. This setup is the best of both worlds.

Most commercial motors use turns with multiple strands because they are easier to manufacture (it's harder to wind a motor with thick copper wire) which is a bit less efficient than a motor that uses single wire turns.

Here's a 600MX rewound with single strand turns (not my motor)

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Old Jun 17, 2014, 06:59 PM
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Quote:
Originally Posted by TheKingPhisher View Post
...Definitely going to get one of these before I get a Mostro and a Goblin Speed.
is it going to be also after you get that jr 700 you wanted too?

Quote:
This just moved to the top of my to buy list and from JR too!
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Old Jun 18, 2014, 01:58 AM
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It's right below the JR which I have preordered.
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Old Jun 20, 2014, 10:40 PM
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Originally Posted by Atomic Skull View Post
Because the belt belt drives an intermediate pulley which directly drives the tail belt pulley and the pinion on the main gear.
Yeah but my question is more about why they went with that type of design vs something like the Goblin and Mostro? Is there any advantage to that specific implementation or are they doing it just to be different?
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Old Jun 21, 2014, 09:26 PM
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The precut cooling vents for the ESC is sweet. Definitely going to get one of these before I get a Mostro and a Goblin Speed.
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Old Jun 21, 2014, 10:30 PM
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Stop being a Jackass....everyone knows who you are...

Too chicken to use your old account?
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Old Jun 22, 2014, 04:52 PM
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i like the a/r linkage design, haven't seen that before, it makes sense.
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Old Jun 22, 2014, 09:17 PM
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Yeah it looks pretty interesting. So far there are about 4 different AR design types out there.

1. The traditional pin in elongated vertical slot
2. The triangular "A Arm" bracket used in Thunder Tiger and JR helis
3. The slightly different captured elevator servo link in horizontal slot used in the Compass Warp
4. The cantilever design in the RJX Vector

There may be others but those are the ones I've seen so far.

That said I'm still questioning why they went with a long main belt but are not using a "reduction gear"? If you look at the intermediate gear notice the small intermediate "pinion" that meshes with the main gear. It looks to be the same size as the motor "pinion"...which means it's not doing any additional gear reduction?
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Old Jun 23, 2014, 06:01 PM
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Originally Posted by TheKingPhisher View Post
That said I'm still questioning why they went with a long main belt but are not using a "reduction gear"? If you look at the intermediate gear notice the small intermediate "pinion" that meshes with the main gear. It looks to be the same size as the motor "pinion"...which means it's not doing any additional gear reduction?
The motor pulley drives the secondary pulley which is larger, so the pinion spins at the same speed as the larger pulley not the motor. Also an S3M belt has larger teeth than a module 1 gear so the tooth counts are going to be different for the same diameter.
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Old Jun 23, 2014, 08:15 PM
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Ah ok I understand now...thanks for the explanation.
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Old Jun 23, 2014, 10:15 PM
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The maingear looks the same as on my X-Treme 600 btw which would make it a 100T 14mm thick CNC slant gear. If it's like other RJX helicopters they will have used M4 bolts that thread into tapped holes in the mainshaft on each side of the hub instead of jesus bolts.
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Old Jun 25, 2014, 04:57 PM
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i hate the captured slot style a/r design. It relies too much on things being very well aligned.
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