Kagama Kagama 6S - Servo issues after 2 packs

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Horatio said:
I'm a firm believer in buying quality servos. The difference is perceivable, especially when you are timed racing around on a twisty carpet track. Likewise, you can definitely get used to a 'connected', low latency system and fast (quicker than 60°/0.08s) servos.
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Some "cheap" servo brands are way better than what you would expect e.g. AFRC which are relabeled AGF servos and sometimes "quality" brands have atrocious internal build quality e.g some Hitecs I've disassembled and examined.
 
Horatio said:
Newer ones have 'magnetic' hall effect sensors which are much better.
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Not always, Promodeler servos use japanese Noble extreme long life pots which are actually more expensive than hall sensors due to the failure mode being predictable. A failing pot can be detected early while a hall sensor just stops working without warning. Promodeler makes servos for military and industry and that's important there.
 
Atomic Skull said:
Not always, Promodeler servos use japanese Noble extreme long life pots which are actually more expensive than hall sensors due to the failure mode being predictable. A failing pot can be detected early while a hall sensor just stops working without warning. Promodeler makes servos for military and industry and that's important there.
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'Long life' pots still rely on 'fingers' and contacting physical rails.

Whilst I'm sure expensive pots can be accurate whilst in tip top condition, accuracy will still drift
with wear, necessitating maintenance schedule for pots. Not an issue necessarily on mil-spec stuff, but likewise, a more precise, reliable and consistent Hall effect sensor can be utilised and scheduled for 'maintenance' just the same - by replacing old for new, long before failure occurs, whilst still enjoying the benefits of accuracy and consistency.

My older Hitec ranger 40 FM radio had pots that required cleaning every few months. It was a PITA. 😅

You'd be hard pressed to find a mission critical, control console with pots. Statistically speaking, hall sensors have a significantly lower failure rate, so for mission critical components, hall sensors not only perform better but are demonstrably more reliable.

MIL-R-39023 (old) and MIL-PRF-39023 (new) are the US spec for pots and mechanical sensors. I highly encourage people NOT to read it - because it may induce coma! 🤣

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It's bad enough listening to guitarists turning crunchy pots on their amps! 😅
 
Nobel makes pots that are rated for 1 million, 5 million, and 10 million cycles. The 1 million cycle version will last years, the 5 million cycle pots would probably outlast the bushings in the brushless motor. The brushless motors in standard size servos are rated for around 20,000 hours for noname chinese motors and 28,000 hours for the Japanese Namiki motors used in some midrange and high end servos.

The motor is the difference between the $60 KST BLS815X and the $130 KST X20-9650. Except for the cheap commodity motor in the BLS815 and the expensive Japanese made motor in the X20-9650 and external cosmetics they are the same servo with the same electronics and gears and same internal build quality Specs are identical, the only real difference is that the Japanese motor is about 8% more efficient and lasts a bit longer and for that you pay twice as much.
 
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KnowAir said:
IDK why, but I have had the least success with TC servos. I’m talking strictly RTR. I imagine the servos they sell are better. The RTR servo in the 6s rigs performs fine, just didn’t last. I went through 2, my brother cooked 3. All in short order.
By comparison, he loves his Spektrum RTR servos, and we’ve both had better results from TRX standard servos than the TC units.
Exception being the Sledge, that servo sucked balls too. My UDR servo is quite weak also, but hasn’t given up yet.
You can buy a $30 servo that will easily outlive the stock TC servo, but maybe a tad slower. Or, spend $50 and have more speed, torque and longevity.
I know many go even higher in the range of $100, but IMO just not worth it.
Depends on your budget I suppose.
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I installed a spectrum receiver and I have to continuously re bind it. Spectrum servos have lasted in my stock Arrma rugs.
 
Futaba for me only.

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Protek & AGF servos for me. The low profile servos I've fitted in my 1/10 buggies are outstanding.

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Being a bit of a heli guy and fixed wing old school guy,i cant recomend hobbyfans servos more highly,availabe from alliexpress,dirt cheap,super reliable and on 8.4 bec their 55kg units are great value,albeit a bit noisy,something that dosent bother me on a basher.


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Can anyone tell me and or show me how to wire PP56kg monster to the esc and direct wire to a battery?
I understand what I need to do... I just want to make sure I'm doing it right
 
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