Uri's Big bird build journal

[Superbad]

Well the yellow and red should stand out real well .
seeing how my wife works for UPS Ill tell her to keeep a eye out if it come through her branch LOL

[murankar]

Shouldn't be. HD is in MASS which is about 4 hours North of me as of right now. Should be here Monday or Tuesday; Wednesday at the latest. Thank you for the offer though.

[Superbad]

That was a Joke
something is really wrong if dose come this way first

[murankar]

Yeah, I was in class and could really focus on the forum. Sorry I didn't catch the humor.

[murankar]

Oh and I did send my vcontrol to Texas.

[Superbad]

Right

[Superbad]

So what do you have left to get for it just packs

[murankar]

About 8 EC5 female connectors, 2 male ec5 connectors balance leads extenders,12 awg wire for extending the rear packs to the front, 6 6S 3300 packs, One extra battery tray and that should be about it. Oh yeah the top half of the modular PRC para boards, maybe 2 of those.

[Lee]

I'm really happy with my Revolectrix Platinum 3300 packs.
Plenty of power, stay cool and very low IR.

[murankar]

I was looking at some packs today and this is what I found:

All data is as advertised

Pulse Ultra 3300 35C 6S $82.99 492g
GensAce 3300 35C 6S $75.05 539g
Revolectrix 3300 40C 6S $64.11 500g
Revolectrix 3400 30C 6S $55.56 495g
Opti Power 3500 35C 6S $89.99 575g
Opti Power 3000 30C 6S $94.99 456g

So I think I am definitely going the Pulse Ultra. One they are easily purchased State Side, Cost effective for the capacity and discharge ratings. Weight is not exactly the best but a few grams here or there is not that bad. If I would have spent the big money on the Motor and ESC I could get my electrics down to about 1775 grams. Right now this bird is going to be a pig on 570's. I might go with 575s in the future.

[Superbad]

Have you looked at these

http://www.buddyrc.com/glacier-45c-3300 ... ttery.html

[murankar]

Those things are bricks, lol. no but I just did. What i found is that the 30C 3300 6S are still hevier than the pulse Ultra 35c 3300 6s. All though I will keep those in mind since I have not bought the batteries yet.

[Superbad]

The way the packs are in that heli weight shouldnt really be a factor size is the biggest thing
seen lots of treads were the motor pinion would hit the front pack and cut it open and short it out and bam flame on goblin

[pvolcko]

Can always put a top plate of CF on the battery to prevent that.

[murankar]

When I looked at the batteries I just looked based on weight C-rating and capacity. My main focus for it was to look at the weight differences. Since this will be in the 550 class build weight has everything to do with it. Because this size kit uses mostly 700 sized components they tend to be on the heavy side of things. Now if you can stretch your 550 to 600 then cooking with gas. What I like is that when you stretch a 550 to 600 it gets way light for a 600 sized heli. I would like to make this kit light but on the other hand I have already ordered all the main parts. So for now it is what it is. At the moment I have all the components picked out, some of them are no where near the lightest, quit honestly I cant see spending $355 on a motor right now.


So this is what I am looking at right now:

Motors:
XNOVA 4025-560 Shaft B $220 384g
Knotronic Pyro 650-62 $355.90 290g
Quatum 4125-560 Kv $69.99 340g
Scorpion 4025-550 Kv $169.99 354g

ESC
YGE 90 HV (OPTO) $249.99 53g
Hobbywing Plat Pro V3 100A $129.99 110g
CC Phoenix Edge 120 w/ BEC $229.46 149g
Kontronic Jive Pro 120 HV $599.90 140g
Scorpion 50V 90A OPTO $199.99 150g

I already mentioned the batteies. The one thing I just noticed (and now to late) is the cheapest motor would have been the best compromise for savings in both cash and weight. SAB has this kit coming in at 2400g without batteries. What I don't know is what electrics they weighed their machine with. While going through the servos I decided to give up on the search for now. I just don't know what servos to look at for campairson. I am not looking at stats right now ust weight and cost. I ordered the BK 7001 and 7006 servos. I know what those weigh and what they cost as for brands like MKS, Xpert, Graupner, Align, KST (if they even make this size). Since I am on Vcontrol the FBL unit is not even a topic of discussion. Now if someone wants to add the info by all means do so. It would still be interesting to see the numbers.

[cml001]

Plus one to the cf plate atop the pack. I can only speak of my personal experiences.. Love my MKS... I use the HBL960 & HBL990 HV combo.. Not their most or least expensive servo.. But they are plenty fast fast and have more than enough torque. The ESC.. I'm a Castle guy.. Now here there has been some discussions at the field.. A lot of guys on the 700 class are using a 120.. The Edge or Talon.. Ive got the 160 in mine.. U can save on weight here but must realize ur own style/ability in collective management since the 120 can be kinda close.. But Botos, Maxwell... Tons of guys opt for the 120 due to weight savings and still hammer the piss out the bird... Motor.. U guys know I love KDE. Most guys I fly with use Scorpion and love them... I do hear they are ruffed on packs. Never tried one myself.. Got a KDE & haven't looked back.. Pros & cons... The only negative on the KDE is that they are a bit on the heavy side.. But, they have enough ass that in the air u won't notice a bit! Torque.. That's what they should have named their motors.. Torque'y as all get out! Love it! U don't bog a KDE! So my birds are a bit of a pig due to overkill in ESC and a heavier motor.. Plus I currently use a 5000mah pack where a 4500 would save some weight.. But I've had a few aggressive pilots fly my birds and they all say that in the air.. It doesn't feel heavy.. So I guess I'm right where I want to be. My 2 cents.. Saving a few pennies up front can cost dollars in the end.. Looks like u r making good choices.. I can say the u will be happy with Castle, KDE, or Pulse.. What do u have already in the stock pile again.. Thread is getting long.. My memory is short. Lol

[murankar]

So with your choices yes its going to be a bit heavy even for a 700. Its easier for you to just use 710mm blades. The 570 can swing 575s with out stretching the frame. Here in lies the problem, I have not found 575mm blades yet. So I am stuck trying to keep it light. I like floaty personally and the only way to get that is though either weight reduction or bigger blades. Now this frame does go 600mm with a new boom and couple gears and that's it. One of the main reasons why I chose this size is for the auto ability. Lighter helis auto better that simple.

[cml001]

Yeah.. I use 696s on my E7SE.. The 716s were too floaty.. Yes I do realize my set up is a 700 vs ur 570.. I was trending the brands for u tho and what to expect with them. What components do have already? Id go with the CC Edge 120 & the KDE 600XF 1100 G3 if it's a 6s set up.

[murankar]

Scorpion HKIII 4025-550 KV / Hobbywing 100amp Pro Platinum / BK Servos 7001/7006 / Vbar Neo & UI Sensor / Ultra Guard / Pulse flight packs and rx pack.


BTW do you have the weights on your servos? Be interesting to see if they are lighter than the BK 7001/7006 servos. As advertised the BK servos are 68g each.


Yeah I want to get floaty without breaking the bank. YGE is way to much but save a ton of weight. I guess I am making some sacrifices in lieu of savings. At the same time with out getting extremely cheap. Its a balancing act.

[Lee]

I have the Scorpion motor. Plenty of power, does run hot though, but thats normal for scorpion.
I'm running the CC Edge 80HV works great.
Revolectrix has a US warehouse.