rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 435 ONLINE 42 EVENTS SEARCH REGISTER  START HERE
 
1 page389 viewsPOST REPLY
A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

.
.
e-Align T-REX 450-500-600 > T-REX 600 Stretched 600 for 3D?
 
 
Dakine
Elite Veteran
Location: OC, Commifornia

Has anyone stretched a 600 for 3D? If so, which parts, motor, batteries did you use?

I'll also do a search next .

Tony Rawlings, What good is 911...cops can't be everywhere...use 1911.
05-07-2008 05:26 PM
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

WHAT

For best 3D use an 8s LiPo setup with a Neu motor and Rotor Tech 610mm blades.

If you want a larger wait for the 700E.





... BTS
05-07-2008 06:50 PM
 
 
lovetofly
Senior Heliman
Location: Dallas, TX - USA

But what if we can't wait?

I built a flybarless stretched 600 running 710mm mains and 105mm tails a few months ago with 12S 5000mAh, Z50A-600 motor, raptor 60 tail drive shaft and a custom boom from Phil Lennert in Australia.

Awesome bird. Fly's great! Talk about fast cyclic - blows even the most hyper 50 size away (unless it's also flybarless). No need for me to wait for a 700E (which may never show up).

If you don't go flybarless it's a bit more work since you need some additional head mods, but flybarless is the only way to go IMHO.

My parts/mods list(most of it anyway):
Longer CF tail boom from Phil
Raptor PV0194 tail drive shaft (minor grinding needed)
longer tail supports (solid 24" CF)
CC85HV
Z50A-600 (565KV) w/13T straight
(backup motor is Neu 1915/1Y with 12T)
dual battery supports in front, allowing two 5000mAh batts at near horizontal orientation.
Xmseller CNC bearing blocks, tail servo mount, tail boom clamp
I also used the AL pieces from the stock bearing blocks in the tail boom clamp instead of the 6 plastic ones.

Then there's the custom flybarless head... (phase1)
I used 10mm long swash ball links from Vario for direct swash to blade grip connections.
Custom servo arms were about 18 or 19mm long (I think), and I eliminated the bellcranks.
This worked very well, tho a bit touchy on the collective.
I modified the mixer arms as on trextuning.

The next head (phase2) will be using some sort of mixer arms or longer blade grips arms to get a bit more resolution (tho it's not bad the way it is). I'm currently engineering the details for the new head now.

Enjoy!
05-07-2008 08:16 PM
 
 
efliernz
Senior Heliman
Location: Hamilton, New Zealand

Lovetofly...

Awesome summary of your setup.

How is the Z50 holding on??? I've heard mixed reports about them staying tight (well, getting loose) in the bearings.

I am too, looking at 12S (2 x 5000mA 6S in series) stretched but for AP reasons. What headspeed are you getting?

Cheers,

Pete, Trex 500, Trex600 Al, Low-volt alarms - check the gallery for my alarms ,GY401, DX7.
05-08-2008 01:07 AM
HOMEPAGE  
 
 
lovetofly
Senior Heliman
Location: Dallas, TX - USA

Well, I didn't get more than a dozen flights on the stretch before it was damaged (not from a crash, but something else ). Anyway, so far everything was perfect. I expect the bearings in the Z50A to go pretty fast (tho no faster than my Neu's), but they are VERY easy to change and I'll be ordering some in bulk soon. Given the easy maintenance on the Z-power and how well it performs, I LOVE it. Bearing changes in a Neu are a PITA.

Headspeed with this config was around 2000 easily and could be less and still be awesome. The best part is the amp draw...highest peak I could get was 76Amps, and hover was at 18Amps at full headspeed (down a couple more if you drop the headspeed). The motor was the only thing that was warm at all. No bogging either...it was amazing.

AUW should be just under 10 lbs, tho I didn't put it on a scale yet. This would be perfect for AP if you put an 11T or 12T pinion. I bet you could fly 15 or 20 mins like that. Get flat bottom blades and you'll be blown away by the added endurance.
05-08-2008 03:24 AM
 
 
efliernz
Senior Heliman
Location: Hamilton, New Zealand

Thanks mate.

I want a headspeed around 1600-1650 so using an 11T in governer mode with the CC85HV looks like a great option.
I'm not a hard pilot - I just need a setup that will carry my 360 mount/video camera and have a chance of auto'ing in if required. Something my 12lb Trex600 will never do.

I've found the motor & esc is available in Australia so I'll order them.

I'm getting a stretched Torque-tube system made at the moment. I'm flying into the US for Oshkosh in July so I'll get some semi-symm 710mm blades sent to my sister's house in WI. Much easier than convincing a US shop to post down under...

Pete, Trex 500, Trex600 Al, Low-volt alarms - check the gallery for my alarms ,GY401, DX7.
05-08-2008 03:51 AM
HOMEPAGE  
 
 
helimatt
Key Veteran
Location: Lafayette, IN

lovetofly,
Sorry if I missed it in the posts: assume you are running trex 600 metal grips or others on the main? How are the grip radial and thrust bearings holding up? Other than the flybarless and the bearing blocks, the head and shaft are stock?

Sounds like a nice ship.

Never, ever, ever, ever give up.
05-08-2008 04:03 PM
 
 
lovetofly
Senior Heliman
Location: Dallas, TX - USA

Yes, stock Align metal grips, head and shaft. Bearings are fine so far. I ran some calculations and load stresses with 710mm mains at 2000rpm are about the same as 600mm at 2500rpm. Target rpm is about 1950 or so...which is plenty with flybarless. If running a light 710 blade then stresses will be that much less. No issues so far, but have relatively few flights. I'm currently redesigning the head for improved feel. Otherwise I'm loving it!

Bigger IS better.

Hey Pete - Have you found some good semi-sym 710mm blades? Let me know if so.
05-08-2008 07:47 PM
 
 
efliernz
Senior Heliman
Location: Hamilton, New Zealand

710 blades - Will do. I have to order them in (once I look/find some) so others may have better luck.

Did the Z50-600 fit inside the standard fram or did you go "aftermarket"?. I already have some G10 frames with bigger holes for the bigger motor... I've been looking at this for a while More now that I am flying a video camera.

Pete, Trex 500, Trex600 Al, Low-volt alarms - check the gallery for my alarms ,GY401, DX7.
05-08-2008 08:57 PM
HOMEPAGE  
 
 
misskimo
Veteran
Location: Alaska 12 years before , mississippi for 31 y

hey , fun 710 heli forsure, I had my older 600 converted to a 700, it had the avant head on there and HFE frames , YEH! those 9650 servos still delievered too! theres a video in my gallery of the trex 700 I did last fall. I converted it back to a 600 last week and will convert my other trex with rotorworkz HFX frames into a 700 due to taking the avant head off and putting it back on my Evant! the avant head is sure easy on the servos, align head needs the bigger servos for 710s. 2000 HS is Nice, motor I liked the best , is the actro 32-3 with a 17t pinion , gov , emulity gov, CC 85 and ThunderPower V2 6s3850 X 2

Do-Yo-Thang! !:~) Team ThunderPower, Minicopter & Spartan Gyros
05-09-2008 12:17 AM
 
 
lovetofly
Senior Heliman
Location: Dallas, TX - USA

I'm using the stock CF frames, with the motor area cutout with a dremel to fit the Z50A-600. The motor is just barely wider than the inside width of the frames. The Neu 1915 is a tad wider but also fits fine with the frame cut, or aftermarket frames.

How's that Actro? I've heard stories of those occasionally throwing magnets? Looks like an awesome motor tho...I considered it too, but the price put me off as compared to the Zpower (and the Zpower works so well already).
05-09-2008 02:37 AM
 
 
misskimo
Veteran
Location: Alaska 12 years before , mississippi for 31 y

hey , the % of a mag coming loose is so remote, dont worry about it , yeh! it is costly , but you will never have to worry about another one , they have replacement bearing and shafts. any time you get an actro , its wise to take it apart and locktite the bearing to the shaft, over time they will start spinning on the shaft, Actros should locktite them but they dont for some odd reason , but after you do, great power , way better than that peice of junk Z motor

Do-Yo-Thang! !:~) Team ThunderPower, Minicopter & Spartan Gyros
05-09-2008 02:45 AM
 
 
lovetofly
Senior Heliman
Location: Dallas, TX - USA

The Actro does sound awesome, but for now the cheap Z works great at 1/3 the price! I've heard the Z50A-600 is slightly better in terms of power than the Actro 24-4 (or was it the 24-3?). That 32-3 is definately going to be a bruiser!

Also, the Neu 1915/1Y is pretty amazing in this bird. Might rival the 32-3. I only got two flights out of my new Neu though, before it slipped the shaft inside. I think it had too much power for its own good. Got it back, but haven't flown it again yet.
05-11-2008 08:58 PM
 
 
misskimo
Veteran
Location: Alaska 12 years before , mississippi for 31 y

hey ! naw the Z motor has about 3 to 5% less power than the 24-4. whats your temps after a flight with the z motor ? all the actros come down at 120 to 130 F , so back to back flying is pos.

yeh! I got a 1915 1.5Y I tried in it too, yeh! it produces about the same power , but after the flight , 170F I like back to back flying

Tony

Do-Yo-Thang! !:~) Team ThunderPower, Minicopter & Spartan Gyros
05-12-2008 01:23 AM
 
 
1 page389 viewsPOST REPLY
XHELI.COM . Autography FlightPower . Advantage Hobby

.
.
e-Align T-REX 450-500-600 > T-REX 600 Stretched 600 for 3D?
  UPDATE SCREEN   PRINT TOPIC Advertisers 

Subscribe to This Topic

Thursday, July 24 - 7:06 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie