Possible Kontronic HV purchase...

[lincpimp]

Really thinking about buying this:

http://www2.towerhobbies.com/cgi-bin...?&I=LXGCX1&P=7

I have two 5s lipos and an aveox 1300 kv motor, I would like to put it in my hyper 7. Been itching to try out a hv setup and 10s is HV! Already have the mount, parts, etc. Figured that I could find a use for the 1800kv motor too, maybe in one of my stampedes, or a 5s setup in a light emaxx. Anyone have any thoughts on this? Keep in mid that I will not be paying the list price!!

[Serum]

I would go for a bk 3695 and a Neu motor. Enables you to use motorbrakes for a tad more money.. Shoot Mike an email, i am sure he can help you out, i think he has got something laying around..

[lutach]

The BK 3695 is only good for 42K rpm with a 2 pole motor. I have one in my Ofna buggy with a Hacker C50 13L and it almost at the rpm limit. That Jazz controller is a well built machine. You will like it a lot. I have a few of them.

[Serum]

since you can choose the kv of the motor you don't need to worry about that.

But it doesn't work AT ALL with the neu though, i forgot about that.

Point is you can get a normal car setup at about the same price.

the 42K limit isn't a big deal, lower KV/more torque..

[othello]

The Jazz 55-10-32 has 2 car modes. one with proportional brakes and reverse and one without reverse. I use the first mode and can lock all 4 wheels on tarmac with a 1:8 Buggy if i hit the brakes to hard.

My Neu 1512/2y (1400kv) already spins at 42000-44000rpm with 10s A123 (= 8s lipo) @10A. Your aveox 1300kv motor would spin at almost 50000rpm with 10s lipos. That seems crazy high. A lower KV motor (around 1000kv) would be a better fit for 10s. Or use this motor with 8s.

The BK ESC would only spin a 2 pole motor @42000rpm. Like Lutach already mentioned with Jazz controllers you are buying a quality product. Never heard of any Kontronik ESC going up in smoke (like schultzes, BKs, Castles ...).

[lincpimp]

My main desire was to try a 10s system and also give kontronik products a try. I had figured that a l can length motor on 10s will be sufficient to run a light buggy to around 40mph. My 5s packs are good for about 50amps continuous, which should be ok. Everyone here who has a kontronic esc seems to like it and I know that aveox make good motors. Figured I would give it a try.

[Serum]

Hmm, looks like i am starting to suck more and more..

i assumed it was an airplane controller..

[lincpimp]

Thats ok, we all get old

Just joking.

I figured that it was worth a try as the whole setup will cost about the same as a 1515 neu motor by itself!

[Serum]

why is there a special car version of the jazz 55 and the 70?

[lincpimp]

Originally Posted by Serum

why is there a special car version of the jazz 55 and the 70?

Kind of like the old quark air masters that had all of the programming in them and you just selected what application you were going to use from a menu. This is nice as most companies charge a premium for their car software and do not give a choice in controller usage.

[othello]

Those ESC have more car modes and are intended for 1:10 cars. They have a cell limit of 10 cells (NICD/NIMH).

But besides the software the Jazz 80 and jazz 70 car is identical. Some guy in germany even uses his Jazz 70 with 12 cells NimH.

All Jazz controllers (without the car extension) are multipurpose ESC which have 2 car, heli and Aircraft modes.

Jazz ESC are picking up momentum in germany when it comes to 1:8 car use. Most guys use the Jazz 80 with a Fun 600/21 (or 25) in their Emaxx, Ezillas, twinforce or 1:8 Buggys with 4s lipos. My first setup im my buggy was a Jazz 80 with a fun 600/25 and 12 cells Nimh. This components still are working great in my Ezilla. But the Kontronik motor is not as efficient as a Neu and will heat up (thus needs a fan and/or heatsink). Due to the Amps flowing (around 100A burst) when only using 4s the Jazz 80 needs at least a heatsink.

Kontronik btw doesn't recommend Jazz ESC (without car extension) for car use.

Originally Posted by othello

Kontronik btw doesn't recommend Jazz ESC (without car extension) for car use.

Who said that? I've heard the opposite from Kontronik...

FWIW, I run a Jazz 40-6-18 on 4S in a 1:10 buggy. They work great, and the latest version 8 firmware has fixed one bug I used to experience, and improved the braking/reverse algorithm since version 7.

My BJ4WE has the Jazz setup right now. I was running it in my old RC10 when I posted some results of it. The beauty of the low voltage Jazzes is that they have a builtin switching BEC.

Well I've got a 1:8 conversion in the works, but haven't finished it yet. It's been months since I started it! Hopefully I'll get it finished soon so that I can post my experiences. I plan to run a Jazz 55-10-32 and a Neu 1912/1Y on 10S Lipo in it.

[othello]

Some guy in germany had troubles with a jazz 80-6-18 and Plettenberg Maxximum in a Emaxx. When going from full throttle to say half throttle the motor followed immediately his command: for him it was like braking. While jumping it was troublesome (now he uses a Schulze and does not experience the same behavior).

So he called kontroniks support and their answer was that he was the only one experiencing this behavior and ultimately he should have been using a Jazz car and that they do not recommend other Jazz controllers for car use.

That is the story behind it!!!

Your future 1:8 setup sounds interesting. The Jazz 55-10-32 is a powerfull ESC and is used in helis at up to 4KW (10s and 120A). The 1912 should run very cool. Don't forget to post pictures and comments on this setup. Sounds very promising. Good Luck with your future conversion.

[Serum]

so no technical or software differences in both controllers?

[Serum]

Great info. Will try that controller with a low KV neu.

Good info on the motor as well. Do you know what type of segmented rotor they use? sliced or sintered?

Sounds like the motor is less ideal than i hoped for. Guess the price says it all, you get what you pay for, right?..