caution!! "the box and the battery" e-raptor 50

[PDC]

Hi!

Did fly the 29´th cycle on my first e-raptor 50 today, number two is already ordered, ....but....take care with the axis ending just above the batteri.

I guess this is 100% my own fault, but have a look at the pictures below to see what happens when this "the box" axis work its way some few milimeters down in a tp Pro-lite battery.

The pinion axis is submerged one or two milimeters below the bottom of the "box" base where the battery is mounted just below.

Not sure if it have been like this all the time, and I just missed this submerged axis, or if it has worked its way down in the battery.

Until further i guess that I simply have mounted the axis this way, and that I too have overseen the hazard when I mounted the battery.

And, not to forget, the e-raptor, the box and the prolite batteries have been working great together until this prob. 90 "fail 40" today.


Regards

Paul


http://www.helifreak.com/album_mod/upload/df33dd3fd20cd1fe83ef6014112feff3.jpg

http://www.helifreak.com/album_mod/upload/cdd569efaae50de5fa0f08e6a7b43c32.jpg

http://www.helifreak.com/album_mod/upload/80c9844047e95f380fb4866b75440049.jpg

http://www.helifreak.com/album_mod/upload/310207fffdbc85709a32a49a5eb1d3e4.jpg

[WillJames]

I feel your pain. Mine got through the shrink wrap and barely marked the insulation on the leads.

I have to fly with the flat side of my pack turned up to keep this from happening.

Glad to see you did not wreck the heli.

[PDC]

Hi Baja170!

That was a close call you had there ;-), one milimeter from a short circuited battery I guess....

As you can see on my pictures I too fly with the flat side up.

Now I have adjusted the shaft so it is level with the base of the "box", hope the pinion will still fit in the top when I mount the box again.
Also I have placed several spacer layers of tape on the base of the "box", hope these two "adjustments" will cure the problem in the future.

Again, until now very happy with the box, and the prolites.

When my rappy fly again it will be with the neu motor and the ultimate bec, hope there will be no radio problems when I shift from my receiver akku to a switching BEC. Time will show.

http://www.helifreak.com/album_mod/upload/771b6c4e2c7a3c3f9ee455927b478745.jpg

[WillJames]

I am very happy with my box and 10s2p Pro lite myself. very good through 32 cycles so far. Only complaint I have with the coinversion is the roll rate is slow with all that weight of the pack so low in the frames. Other than that it is a rocket ship!! I am runnig the Hacker C50-15XL and the 77-O. So far great combo!!

Pretty addicting.

[blakka_1]

Have you tried those lighter paddles yet Will?, if so then how was the flip rate after changing to lighter paddles?. Have you tried adding more cyclic pitch?, I am running 7 degrees cyclic pitch on aileron and elevator and it's very quick, I tried 8 degrees but the Rappy didn't like it (sounded like It wanted to boomstrike during flips). I been using 7 degrees cyclic pitch for ages now, it's safe. :)

[WillJames]

Yres I have tried V's, Stock, Stock ccut down by HC and the Green paddles. The Greens were the fastest but still a lot slower than the flip rate. I was running enough cyclic to bind at full + or - Collective qand it still rolled slow. You could throw in a little collective to make it look like it rolled faster, but.... It has to do with how far down all that weight is when you run your pack right on top of the struts. For instance, most non-conversion machines have the CG WAY higher up in the frames. Overall I LOVE the converted Rappy, this is my only complaint with it.

[Albig]

You can mount packs on the side if you'd like to get the vertical CG a little higher.

Get yourself 2 5s2p packs and put one on each side and connect them with a Y harness.

All E Raptors had the batteries mounted there before the intro of the 10s2p packs.

The roll rate on my CCPM CF E Raptor is quite fast even with the batteries low.

Al

[WillJames]

I tried to run two Duralite 5s2p packs and even with making custom holders for them, I could not get the CG right and still fly the heli with a Canopy. Hammer helped and we gave up because we just could not get it right, and I cannot see the heli good enough to fly without a canopy.

[Albig]

How come you couldn't get the CG right because you could get it far enough aft or forward?

It takes some creative canopy work but I've been able to get it correct on several differnt setups.

I have never tried it with a Boxed set up in a plastic Raptor yet. I'm going to assume that you cant get them far enough forward because you motor is mounted pointing backwards.

I can see where that would be a problem. Here's how I solved it:

Al

[blakka_1]

Will, get Vic at Vblades to custom make you some 15g paddles, 5g lighter then the 20g greens. I know Colinb on HF had Vic make him some custom V paddles. :)

[WillJames]

WOW Al, Nice!

Yes by the time you get the packs far enough forward, you could not run a canopy, you also don't really have anything good to mount them to way up there without fabricating something. We tried a lot of ideas, but it just was not happening.

Good idea about the paddles Blakka. I am a little afraid it would makethe heli to pitchy in FFF on a windy day, it is already a handfull with the greens, but I know V Paddles are a lot more stable than the greens... Interesting idea. :)

[PDC]

Think I know what happened...the drive shaft where the pinion is mounted have a flat spot for the pinion set screw.

When I mounted the pinion with the pinion set screw in the lowest part of this flat spot, and the box was mounted in the Raptor, the drive shaft was 1-2mm too long, or the flat spot for the pinion set screw was placed 1-2mm too high on the drive shaft, or it was 1-2mm too narrow....in other words, I had to use my dremmel tool again to extend the flat spot on the driveshaft downwards, so the whole driveshaft could be raised with these 1-2mm to get free of the battery pack.