3D Hobby Shop 71" AJ Slick - Build & Fly thread - Page 1572 - RC Groups
Thread Tools
Jun 11, 2012, 04:38 PM
doh!
ryan_m's Avatar
Quote:
Originally Posted by Manta1
ooooh!! vey cool.. So hows the "vectored thrust" with the 18x8 for the low and slow stuff?
It honestly doesn't feel much different than the 380 with 19x10. Bit less prop torque to contend with in a hover, but otherwise it seems to feel much like the 19x10 did. But the speed factor is much better, and that is exactly what I was after!
Sign up now
to remove ads between posts
Jun 11, 2012, 04:54 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by zmonster97
I would be using electric and four digital servos. So, since you only use up 450mah in 8 flights, I could get away with a 1300mah battery?
I'm running a 2S 1550 25C GensAce into a BEC Pro for Regulated @ 6V to the Savox TG Servos. Works out great. No issues.
Last edited by heritageflyer; Jun 11, 2012 at 06:54 PM. Reason: Fixed the C rating
Jun 11, 2012, 05:39 PM
RC Pilot / Photographer
-= GYRO =-'s Avatar
Quote:
Originally Posted by Irg
I'm using a 1000mah 3s pack on a 72SC electric. 8 flights sucks down about 450mah with four digi servos.
not sure of why to run a seperate battery to the servos? Why not just tap into the main leads with the BEC?
Jun 11, 2012, 05:42 PM
Team Aztech Aeromodels!
zmonster97's Avatar
Quote:
Originally Posted by -= GYRO =-
not sure of why to run a seperate battery to the servos? Why not just tap into the main leads with the BEC?
Personal preference. I just wanted the receiver power separate from the main power.
Jun 11, 2012, 05:42 PM
Team Aztech Aeromodels!
zmonster97's Avatar
Quote:
Originally Posted by heritageflyer
I'm running a 2S 1550 30C GensAce into a BEC Pro for Regulated @ 6V to the Savox TG Servos. Works out great. No issues.
OK, maybe I'll go with that. Except I'll go with the 25c.
Jun 11, 2012, 05:49 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by -= GYRO =-
not sure of why to run a separate battery to the servos? Why not just tap into the main leads with the BEC?
I like Redundancy. Run through three bad packs (dropping cells) like I have in the past two months and watch your planes get beat up coming in. Then you can see why the redundant and isolated power sources.

Spektrum Receivers (and others have their limits too), like to reboot in air if you get a brownout on voltage. Just dumped the 57 SC in again yesterday off an old pack that couldn't cut the heat. Rebooted the Receiver and ESC. Going to add a separate 2S 1550 flight pak (borrowed from the 71) and 10A BEC to run the Rcvr and Servos now at 6v.

Same 6S 5000 pack with a weak cell got me twice in the 71 Slick, but at least in the Slick, I had a (Controlled) hard landing because the Receiver and Servos were isolated.
Jun 11, 2012, 05:51 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by zmonster97
OK, maybe I'll go with that. Except I'll go with the 25c.
It probably is a 25C. Have to look again...

If you are still looking for servos let me know.


Correct, 25C.
Last edited by heritageflyer; Jun 11, 2012 at 06:54 PM.
Jun 11, 2012, 06:02 PM
RC Pilot / Photographer
-= GYRO =-'s Avatar
Quote:
Originally Posted by heritageflyer
I like Redundancy. Run through three bad packs (dropping cells) like I have in the past two months and watch your planes get beat up coming in. Then you can see why the redundant and isolated power sources.

Spektrum Receivers (and others have their limits too), like to reboot in air if you get a brownout on voltage. Just dumped the 57 SC in again yesterday off an old pack that couldn't cut the heat. Rebooted the Receiver and ESC. Going to add a separate 2S 1550 flight pak (borrowed from the 71) and 10A BEC to run the Rcvr and Servos now at 6v.

Same 6S 5000 pack with a weak cell got me twice in the 71 Slick, but at least in the Slick, I had a (Controlled) hard landing because the Receiver and Servos were isolated.
maybe I'm missing something, but on a 8s, (2x4s 4000 25c) if one entire pack dumps, the other pack is still 14-16v, and the BEC is regulating 6v out... so it shouldn't affect the BEC's ability. I wire my bec to the leads PRIOR to the ESC... so event if I drop a cell or 2, my BEC shouldn't loose power, right?
Jun 11, 2012, 06:05 PM
Registered User
What's different between the gas and electric versions ? I want to go electric but only the gas versions are in stock. The manual is kind of light in this area. The manual shows an electric and says the firewall-thrust washer distance is 80mm, which would lead me to believe the box is 90 mm longer on the electric. I could kluge a box extension, that way I could convert to gas later.
Last edited by BOBHEND; Jun 11, 2012 at 06:16 PM.
Jun 11, 2012, 06:06 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
Quote:
Originally Posted by -= GYRO =-
maybe I'm missing something, but on a 8s, (2x4s 4000 25c) if one entire pack dumps, the other pack is still 14-16v, and the BEC is regulating 6v out... so it shouldn't affect the BEC's ability. I wire my bec to the leads PRIOR to the ESC... so event if I drop a cell or 2, my BEC shouldn't loose power, right?
Sometimes cells open up...when they do...no power...period...but the same thing can happen to a receiver battery....it's all point of view, and preference...

SteveT
Latest blog entry: My hangar...
Jun 11, 2012, 06:07 PM
Team Aztech Aeromodels!
zmonster97's Avatar
Quote:
Originally Posted by heritageflyer
It probably is a 25C. Have to look again...

If you are still looking for servos let me know.
Was I ever looking for servos? But no, I won't need servos.
Jun 11, 2012, 06:22 PM
Team Aztech Aeromodels!
zmonster97's Avatar
Does anyone know how tall it is from right in front of the landing gear to the ground?
Jun 11, 2012, 06:23 PM
Registered User
robj's Avatar
Quote:
Originally Posted by BOBHEND
What's different between the gas and electric versions ? I want to go electric but only the gas versions are in stock. The manual is kind of light in this area. The manual shows an electric and says the firewall-thrust washer distance is 80mm, which would lead me to believe the box is 90 mm longer on the electric. I could kluge a box extension, that way I could convert to gas later.
Typically you just have to make some longer extensions for the electric motor. Open up some holes for cooling. The cowl is a little different(not as much access, stops at the firewall). The 72 and 74 are "gas" kits but work fine as electrics.
Jun 11, 2012, 06:55 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by -= GYRO =-
maybe I'm missing something, but on a 8s, (2x4s 4000 25c) if one entire pack dumps, the other pack is still 14-16v, and the BEC is regulating 6v out... so it shouldn't affect the BEC's ability. I wire my bec to the leads PRIOR to the ESC... so event if I drop a cell or 2, my BEC shouldn't loose power, right?
So you've got some redundancy in Dual Packs. I don't in either plane, since one is 4S 4000 and the other is 6S 5000.
Jun 11, 2012, 06:56 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by zmonster97
Was I ever looking for servos? But no, I won't need servos.
Guess not, I thought you were working your way through components.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Poll 3D hobby shop 51" slick or 55" SHP? appleflyer 3D Flying 24 Mar 24, 2009 07:29 PM
Video 3D Hobby Shop's AJ Slick Clark Warfel Electric Plane Talk 3 May 08, 2008 08:31 AM