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Old 08-28-2018, 01:36 PM   #1 (permalink)
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Default Bought a used 770 V2 w Leggero upgrades

So I'll likely have lots of questions. Plan on running it on 12S since I don't fly crazy, and I'll probably get a sub-500kv motor for it for lower head speed--likely 1500 ish. What motor shaft diameter/length should I be looking for?

Which on-line manual will be closest to what I'm getting? V2 or Leggero?

Supposed to get a ship notice any time, so I should have it ready to fly when things cool off.

Dan
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Old 08-28-2018, 02:22 PM   #2 (permalink)
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The biggest assembly difference between the Leggero and the regular V2 is the canopy mounts. Everything else in the upgrade is essentially a lightweight version of the old parts, so either manual will suffice. Does it have the one-piece 700X tail case too? If so, that would be a significant difference.

One bit of advice: If the heli is still using machine screws to hold the bottom frame to the upper frame, replace them with self-tapping screws. The machine screws strip easily. I used these on my two Protos Max V2s: https://www.mcmaster.com/#99397a445/=1ecss27
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Old 08-28-2018, 05:07 PM   #3 (permalink)
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Don't know yet on the tail case. Ordered screws, thanks Alan

Dan
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Old 08-28-2018, 08:00 PM   #4 (permalink)
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Quote:
Originally Posted by TheBum View Post
[SNIP]
One bit of advice: If the heli is still using machine screws to hold the bottom frame to the upper frame, replace them with self-tapping screws. The machine screws strip easily. I used these on my two Protos Max V2s: https://www.mcmaster.com/#99397a445/=1ecss27
Quick question. If the existing machine screws have already cut their threads, are these still better than leaving the machine screws in? I can see it would be better with a new frame where no threads have yet been cut. But for an existing frame; what light can you shed?

Paolo
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Old 08-28-2018, 08:45 PM   #5 (permalink)
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Default Bought a used 770 V2 w Leggero upgrades

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Quick question. If the existing machine screws have already cut their threads, are these still better than leaving the machine screws in? I can see it would be better with a new frame where no threads have yet been cut. But for an existing frame; what light can you shed?



Paolo


Yes, they’re still better because they cut deeper threads.

The tipping point for me was when I was putting together my Evo 700 and the lower frame screws that double as servo mount screws stripped. The mount is adjustable and I wasn’t confident that it wouldn’t slip with stripped threads in the screw locations.

At the time, I went ahead and did my non-Evo 770 with the self tappers too (the box had enough screws to do two helis). I’m in the process of switching over to an Evo boom, so I’m doubly glad I did it.
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Old 09-06-2018, 01:45 PM   #6 (permalink)
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Okay, heli showed up yesterday. I'll need motor/blades so far. I can't find the Xnova 4535-460kv anywhere. Anyone know where it might be bought? Which shaft?

I can get the KDE 700XF-455-G3, and I'm assuming the 51mm shaft would work since I read in the forum that 34.5 is too short. Anybody use it?

Dan
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Old 09-06-2018, 02:40 PM   #7 (permalink)
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Okay, heli showed up yesterday. I'll need motor/blades so far. I can't find the Xnova 4535-460kv anywhere. Anyone know where it might be bought? Which shaft?

I can get the KDE 700XF-455-G3, and I'm assuming the 51mm shaft would work since I read in the forum that 34.5 is too short. Anybody use it?

Dan
I'm running an Xnova XTS 4530-480 on my 770 swinging Align 780m blades. I don't think you fly any more crazy than I do.

If you're still set on the XTS 4535-460, Only Fine Helis lists it as in stock:
https://www.onlyfinehelis.com/XNova-...YY_p_5325.html
I believe you need the A shaft. You could contact Shannon and find out which shaft that one has.
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Old 09-06-2018, 05:29 PM   #8 (permalink)
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Thanx for that screw link. I just ordered a box and may get a couple more in the future just to keep on hand.



Quote:
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One bit of advice: If the heli is still using machine screws to hold the bottom frame to the upper frame, replace them with self-tapping screws. The machine screws strip easily. I used these on my two Protos Max V2s: https://www.mcmaster.com/#99397a445/=1ecss27
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Old 09-06-2018, 11:58 PM   #9 (permalink)
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Yes thanks for the tip. I will try and fine some...hopefully locally.
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Old 09-07-2018, 04:31 PM   #10 (permalink)
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Thanks, Alan. Dan
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Old 09-07-2018, 06:10 PM   #11 (permalink)
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I ordered them. Hopefully they send them to me. (Canada)
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Old 09-11-2018, 03:09 PM   #12 (permalink)
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Well I received the screws today. $10.46 for the screws and $20.22 for shipping plus tax. total $32.21

Oh well..I have them.
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Old 09-11-2018, 03:16 PM   #13 (permalink)
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Well I received the screws today. $10.46 for the screws and $20.22 for shipping plus tax. total $32.21

Oh well..I have them.
It's not a whole lot less shipping in the US, since they only ship UPS. I wish they'd offer a USPS option.
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Old 09-11-2018, 09:08 PM   #14 (permalink)
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I added a bunch of metric bolts etc to my order that I was getting short of to amortize the shipping cost some. I have the new screws in the bird now. Stripped it down and I'm in the middle of rebuilding it just for peace of mind and to learn what's what. Only one stripped screw head so far.

Dan
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Old 09-12-2018, 02:59 PM   #15 (permalink)
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I called Shannon to check on the Xnova 4535-460. I was looking for an 8mm shaft since that's what the pinions I have are, but he clued me into the adapter (which was in some assorted parts, I just didn't know what it was) so I ordered the motor. That should be just about the last piece of the puzzle. I'll try to finish it up next week and get it in the air.

Dan
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Old 09-12-2018, 03:05 PM   #16 (permalink)
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Did you also get the 6mm ID bearing with the assorted parts?
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Old 09-12-2018, 03:36 PM   #17 (permalink)
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Yes, I found that too. Dan
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Old 09-12-2018, 03:44 PM   #18 (permalink)
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That motor is a brute! I love mine.
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Old 09-12-2018, 09:18 PM   #19 (permalink)
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I wish I could fly like a brute.

Alan, thanks for all the good advice so far. May be back atcha for more. Lets hope the rain is done for a while. Heading to Texoma this weekend for family time. Lots of trees, no helis going.

Dan
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Old 09-18-2018, 03:07 PM   #20 (permalink)
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So, into electronics now. The HW 200 has 8 gauge wires which I can't fit into the EC5s I'm using on the batteries (I'd like to keep them with EC5s for multi bird usage. I could do a couple of things and I'm wondering if they will work.

1. I can open up the EC5 plastic housing a bit with a drill so the 8 gauge fits through the housing, or--I can take enough silicone off the wire where the housing needs to fit and use a couple layers of heat shrink instead--thinner insulation. Any better solution?

2. The tinned ends of the 8 gauge are too thick to fit into the male bullets, so I could dremel their diameter down enough to fit into the bullets. OK move?

I won't be pulling 300 amps crazy 3d so I'm thinking that amp wise the EC5s are enough.

thanks, Dan
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