Dansy

My Feedback: (53)

rm

My Feedback: (27)

The software is for setting parameters such as brake, bec, telemetry, etc. Where are you setting endpoints?

Brenner

As near as I can tell the endpoints are set by moving the throttle stick through its complete range of motion.

I am attaching the Kontronik manual for people to look through.

Brenner ...

wattsup

My Feedback: (1)

Well after 50 flights I decided to service my Brenner V2 CD and Neu motor and all seems well with no visible signs of wear and tear so as I stated in an earlier response I would consider telling everyone of my modification after a number of flights. Wait for it, wait for it.....Ceramic bearings! I am still averaging 2200-2500mah per Masters flight (even in the winter winds here in Tennessee) and could not be more pleased. Wish I would have thought of this 5 years ago! Regards, Everette

Brenner

Hey Everette,

Which bearings have you replaced with ceramic bearings?

Brenner ...

wattsup

My Feedback: (1)

Hi Brenner, I replaced the bearings in the Neu F3A motor. It not only runs smoother but consistently cooler. To me, increased heat equates to a loss of energy. I know because I have always kept records (as you know) of every flight (times, temperature of the motor & CD, end of flight voltage readings and mahs restored to the battery after charging) no matter which plane or motor I chose to fly. Maybe for once I figured it out! Everette

Brenner

Hey Everette,

Ceramic bearings will be able to spin faster, which will help with the motor because the Nue f3a motor spins at about 43,000 rpm. You can also consider ceramic bearings with phenolic races instead of steel races. Phenolic races have less weight, so they can also spin faster. We use these types of bearings for the main bearings in the V4 Drive. It lets us upsize the bearings without having to accept a lower speed rating.

High speed bearings are typically shielded because rubber seals burn up in high speed bearings. However, it is possible to get bearings with non-contact rubber seals. Non-contact rubber seals are removable so it is possible to regrease the bearings when the grease dries up. This is usually how motor bearings fail.

One final thing to note is that motor bearings should be "electric motor quality" bearings. These bearings have tighter clearances specifically for electric motors. If you use bearings that have loose clearances, (like bearings with a C3 clearance rating...) you might get unacceptable variation in the air gap between the rotor and the stator.

Brenner ...

wattsup

My Feedback: (1)

Thanks Brenner, your response contains a lot of very useful information. The bearings I found are "electric motor quality' but have the steel races. Now to come up with bearings with the phenolic races and non-contact rubber seals. It may take a bit of digging but I will find them in the near future. Thanks again, Everette

wattsup

My Feedback: (1)

Hey Brenner, I noticed there have been in excess of 1600 "views" since my last response on 3-10-19. I sure hope all these pattern flyers have found a "pearl" they can use. Again, thanks for all you and Mike have done for us. Regards, Everette

FLYERSG

Brenner: Did you ever complete the installation/setup of the Kontronik Jive 120 and give it a try? If so, do you have any feedback? I have a number of Kosmiks and Jive Pros in my heli fleet but have not yet tried one in my pattern ships.

Mike

ltc

My Feedback: (3)

Brenner

Hey Mike,

I finally got to fly my Kontronic Jive 120 ESC.

I am flying my Jive 120 without a heat sink. (it comes with a heat sink if you want to use it..) I am also flying it with a Bert Dekker custom-wound motor with a Throttle Tech device, and I am using 23" props. I am currently flying with 6000mah Thunderpower packs, but I think I will switch to the 5800 LiHV packs that Mike Mueller is selling. I don't need the extra power, but the 100g weight saving is very compelling. All of this is flying in a BJ Craft Element.

The ESC is supposed to have telemetry but I haven't had the time to get it working yet so I can't report on internal ESC temperatures. Freewheeling is activated, and the PWM frequency is set to auto-adjust from 32khz to 64khz. The whole setup is very quiet. After about half throttle the sound doesn't really change much at all, but the power produced definitely does. I am not yet prepared to claim that the ESC is making my system quieter, because my V4 has been very quiet like this ever since I upgraded the main gears to lapped gears.

After my first flight, I reduced my throttle ATV to 80%. At this setting, I had as much power and speed as I thought I would need. This setup was still very fast, and it had unlimited vertical at half throttle. After another ten or so flights I increased my throttle ATV to 90%, and I am considering going to 100%. I very rarely fly at full throttle, but I find that there are certain maneuvers where an extra boost of power is helpful. One example of this is upline snaps.

My P19 flights are consistently drawing about 3500 mah, and I am getting through the F19 pattern with not much more than 3700 mah. I think that I am benefiting from the active freewheeling circuitry in the ESC because I can draw up to 5000 mah if I put in a full throttle flight. This is not practical though, because the plane flies way too fast.

With an ambient temperature of 15C my motor is coming down at about 55C, and my ESC is coming down at 35C. My ESC is located directly in the airflow from the cheater hole in the front of my plane, and my motor is not directly located in any flow of outside air. Regardless though, I think I have more than enough margin in both my motor and my ESC for hot summer days.

I set the brake up at its lowest setting, and this seems to be just right. I don't think I'll be changing it from this setting.

Throttle response is very smooth and linear, and I don't have any lurches on final approach like I used to have with my Jeti Mezon.

All in all, I am liking everything so far. If I can consistently put flights in long term with less than 4000 mah, I will be very happy.

Brenner ...

FLYERSG

Brenner, thanks for the information. I'll be using the Jive Pro 120 and a JETI TelMe module in my Eternity bipe with your V4 drive. Did you program modes and 1 and 3, and then setup the brake in the K-Config software?

Mike

Brenner

Hey Mike,

Yes, I did. I also upgraded the ESC Bios to the latest version as well.

Brenner...

FLYERSG

Do you recall the Min and Max PWM Brake settings you used in K-Config? Also, did you use the default settings for positive and negative brake slewrate?

Mike

Brenner

big_G

Burned up a Kontronik 600-94 Saturday on an upline. ESC works fine on an unloaded motor (Spin 99). V4 Contra looks fine. No loose magnets or drag in the motor. Motor has been only warm after landing up to this point. Using about 30% brake. Are there any known issues or conflicts? Going to replace both the motor and esc.
Thanks, Gary

Brenner

big_G

Thanks, Brenner

big_G

[QUOTE=Brenner;12527395][/QUOTE
]Brenner, Which Castle esc? (any hv?)... Also, I have a new YEP 120hv (YGE clone). Any experience with them?
Thanks, Gary

Brenner

Hey Gary,

Any High Voltage Castle should work.

I don't have any direct experience with the YEP.

Brenner ...

JAS

My Feedback: (2)

What about the OS on the 600?

Brenner

J Lachowski

My Feedback: (46)

Answer is yes JAS. I run the Kontronik 600-94 10 pole motor on the V4 contra with the OS ESC.

big_G

On the Kontronic 600-94, what should I set the static amp limit at? I'm currently at 85 amps, about 65% atv.