GAUI X5 12S Upgrade Parts!

[FailureToFly]

Originally Posted by dantemcc

Can u buy em online? I looked for hours yesterday after finding this thread and couldn't locate anything. Not even on the Gaui website.

Just noticed something. Does the X5 require a longer shaft? I see in the upgrade parts it has a motor shaft in it. I was thinking of running a 700m or a 4035-500 in it. Would those shafts lengths work?

You can't buy it as a kit though you can buy the various parts. You don't need anything bar the 14 or 15T pinions for a 6mm shaft and the black main gear if you have other ESC/motors. I bought the 70A HV ESC because it was a dirt cheap ESC for the project but I didn't buy the long shaft Gaui motor as I found a HKIII 4035-500 with std shaft cheaper. The only reason the X7 uses the long shaft is that it uses a bottom bearing for the motor where the X5 doesn't. As far as I am aware the normal shaft will work fine.

[dantemcc]

Originally Posted by FailureToFly

You can't buy it as a kit though you can buy the various parts. You don't need anything bar the 14 or 15T pinions for a 6mm shaft and the black main gear if you have other ESC/motors. I bought the 70A HV ESC because it was a dirt cheap ESC for the project but I didn't buy the long shaft Gaui motor as I found a HKIII 4035-500 with std shaft cheaper. The only reason the X7 uses the long shaft is that it uses a bottom bearing for the motor where the X5 doesn't. As far as I am aware the normal shaft will work fine.

Okay, thanks for the info.

[Michaelinpr]

You dont need the black new main gear either. Yes with the 4035-500 you have a lot more torque and power but I dont think you will ever get to the point of drawing that kind of power from it. If you are flying as hard as Matt, JC and the other Gaui pilots then it wont hurt to go with the new gear for piece of mind.

Remember that a motor will only draw as much as it needs to. Not what it can draw. The 4035-500 is made for a 10-12 lb. heli. The X5 is around 6 lb +.

With the fear of repeating myself, I recommend the 4025-550 motor with a 13 to 15 tooth pinion. More than enough power, 100 grams lighter and much cheaper. If you can still find an HK4025-550 they are giving them away at around $120. Or even the new HKIII-4025-550 for $220 list. The HK 4035-500 is $250 list.

On my X5 running 2500 rpm, 12.5 degrees pitch and jamming the sticks in opposite corners I saw a max peak wattage of 3200. Higher than I thought but still not close to the peak watts on the 4035-500's 4600 watts for 5 second bursts.

@ Dantemcc-Longer shafts will be fine. It doesnt hit anything in the frames. A little close to a frame spacer but no big deal.

EDIT:

4025-550 for $160. All I could find so far. Shipping will be a little more I guess but still a good savings.

http://www.espritmodel.com/scorpion-...ss-motors.aspx

Another one direct from Scorpion $143

http://www.scorpionsystem.com/catalo...5/HK-4025-550/

EDIT again:

Or this motor from Quantum. $150 from HD.

http://helidirect.com/quantum-outrun...kv-p-25512.hdx

[dantemcc]

Are a pair of 6s 3300 45c batts to big for a 12s setup? I know on the vids I've seen from gaui, they use 2650. I got the 6s 3300 45c for my 600pro and was wondering if yall thought they would be a little to much?

[Michaelinpr]

Way too much. 2650 is an extreme max in my opinion and even then the heli is nose heavy. I use 2200's and have the esc on the rear of the frame. Perfect CG. Of course flight times will be reduced a little. I fly 4 minutes of moderate 3D with each lipo cell ending at around 3.78-3.80v

[dantemcc]

Originally Posted by Michaelinpr

Way too much. 2650 is an extreme max in my opinion and even then the heli is nose heavy. I use 2200's and have the esc on the rear of the frame. Perfect CG. Of course flight times will be reduced a little. I fly 4 minutes of moderate 3D with each lipo cell ending at around 3.78-3.80v

I was hoping someone wouldnt say that

[dantemcc]

Looks like i wont be able to use my 700m after all. Internally damaged as i just found out. So have to be another motor. Other than the ones mentioned, would the 600mx 510kv or the 700mx be adequate?

[Michaelinpr]

Based on the specs the 600mx would work great.

[dantemcc]

found a 600mx in the sale forum and a 4125-560 quatum motor on another wone. Both basically the same price, trying to see which would be best.

[dantemcc]

Just got my X5 and I'm building her now.

[Michaelinpr]

What motor did you finally decide on Dantemcc?

[McCollister911]

I'm thinkin about using this hk2 4225-550le I've had waiting for a home. It's only 390gr. Has anyone confirmed TP 2250 doubled up will squeeze under the narrow formula canopy

[dantemcc]

Originally Posted by Michaelinpr

What motor did you finally decide on Dantemcc?

Quantum 4125-560. Ran into a little snag. The shaft is 6mm and the pinion I got with the kit is 5mm. Not to mention the main gear is slant and I couldnt find a 14t slanted gear anywhere that would work for the X5. So went to Empirerc and bought the new black gears and the 14t 6mm pinion. I just hope it gets here before Saturday or else I'm going to have to go back on the road and not be able to fly it. GRRRRRRRRRRRRRRR

Originally Posted by McCollister911

I'm thinkin about using this hk2 4225-550le I've had waiting for a home. It's only 390gr. Has anyone confirmed TP 2250 doubled up will squeeze under the narrow formula canopy

I bought 2200 and 2400 zippy packs and they fit fine. Not sure if they're the same size as the TP packs, but they fit.

[dantemcc]

The only "mistake" I made in this bird, I bought a120hv for what was suppose to be a Goblin 700 build and I changed my mind and bought this. It's difficult finding a place to put the esc, since obviously it wasnt made for it.

[nameci]

Does Align 600MX motor(12S motor for 600EFL Pro) and CC Phoenix 85HV work for 12S conversion? Does the motor need any modification to work? What tooth pinion needed?

I was thinking of using 2650mAh batteries I have for Protos/Trex 500 for 12S set up. It would be nice if I can pull it off so I can share the batteries with other 500s I have.

[Michaelinpr]

Originally Posted by nameci

Does Align 600MX motor(12S motor for 600EFL Pro) and CC Phoenix 85HV work for 12S conversion? Does the motor need any modification to work? What tooth pinion needed?

I was thinking of using 2650mAh batteries I have for Protos/Trex 500 for 12S set up. It would be nice if I can pull it off so I can share the batteries with other 500s I have.

That motor combo will work fine. 13 to 16 tooth pinion to get desired head speeds. The motor has a 6mm shaft so you will need to use Outrage Fusion 50 pinions. I am not sure about the bolt pattern for mounting. I would assume that it would or with very slight modification.

[FailureToFly]

You can also use the 14 and 15T Gaui pinions for the 4035-500 motor which are 6mm.

[nameci]

Thanks!

I also have a spare 700MX motor. Is 700MX motor over kill and too heavy?

[bgymr]

This thread was awesome to get my 12s gaui started. Thanks everyone.

I ended up with the Quantum 4125 motor and the Hobbywing 70HV esc.

One quick question. Do you guys run the battery fence with the 12s setup? Is there a chance that gaui comes out with a battery fence for 12s?

I run 1800 and 2200 sets. I just put the heli together so havent' been beating them up but easily get 4 minutes and I was running 2800 on accident. I have now setup the governor and will probably run the stock HS once I get everything straghtened out which will be 85% throttle to get 2500rpm. That is 12s with a 560 motor with a 14 tooth pinion and 120t main. This is my first big electric heli, and it sounds mean.

Are there enough 12s X5 pilots to start a sticky for the batteries? I would like to get more info on those. To decide on batteries I had to PM people or look at teh sticky above and divide by two.

Thanks again!

[FailureToFly]

I always use the battery fence.

I run 2200 30C lipos and I could not for love or money get the formula canopy to fit. The FES works great though. I use two 30C 2200 Turnigy blues strapped together (stacked vertically) and they have been absolutely awesome and are still going very strong 13 months later through two hot 40 degree C Melbourne summers. No puffing and they don't get hot; warm certainly but never hot.

I still run the 70HV ESC and no issues there apart from the crummy soft start.

At ~2500 rpm on 12S is extremely powerful. ~2750 is pretty insane and I now prefer the lower HS for the extra flight time. The heli is still very fast and plenty powerful at low HS.

I get 4 min (I land immediately) of 3D with a 4035-500 and my lipos down to 3.76v-3.78 at the lower HS. 3m15s on the higher setting. I run a flat TC as well.