Kontronik Jazz 55-10-32 for 8s buggy;-)

[el tomaso]

Hello fellow rc-addicts!

I bought a used Kontronik Jazz 55-10-32 today, hoping to do an HV buggy setup.

I have been reading about HV setups for 1/8 buggies and trucks, and I have seen several people have success with and recomend the jazz. Othello among others.

If I have understood what I've read and heard, the jazz can be used in cars with pistol-radios without a "pistix"? I will need a bec, which HV bec do you recomend? I only know of the CC bec-pro. Or am I better off with a reciever lipo?
Is there anything else I need to know?

The jazz will be used in my tekno eight with a medusa 36-60-1300kv on 8s. I have also bought a used MBX6 to connvert, maybe I will leave my tekno 8ight on 6s and give the HV setup to the mugen.

Thanks for any help or advice.

Thomas Garvik from Norway

[nuz69]

1300kV would be maybe a little too much for 8S 60mm motor no ? Put a small pinion !

[suicideneil]

http://www.western-robotics.com/hercules-BEC-HV_hp.html

Comes highly recommended :)

[lutach]

Solid controller and a 1000-1200Kv would be ideal. I used the 40A 10S version in my heavy truggy and it lasted a long time. The only thing that I need to do to get it going again is solder a new capacitor and the + wire. My 55A never had any issues and they are very under rated controllers (A heat sink is recommended though to keep temps down specially with the high starting power a vehicle needs). I would recommend a RX pack though. I use one with all my HV set ups. I just wish Kontronik would have the same features as most car controllers do nowadays.

[el tomaso]

Thanks very much for quick input!

I am happy to hear that the esc is good for cars and pistol radios, even though I was fairly sure, I wasn't certain. Needing a pistix, that aparantly is not easy to get anymore, would have been a bummer to say the least. Thats why I didn't get a castle esc, even though I got offered a good deal. Luckily I got an even better deal on the jazz 60 dollars max in norwegian kroners.

I know medusa 36-60 1300kv is a bit high kv for 8s, but so is 36-60 1600kv for 6s and that setup works perfectly in the tekno 8ight now. Its geared low at 13/48, with 12/50 as the lowest option. Using the speed calc I found that with gearing at 13/48 both setups give the same speed at 40mph. Thats why I think it might work, after all people run their castle/neu 2200 and 2650kv too on 6s. Now thats madness IMO, but madness seem like fun I admit that

Also, I have the 1300kv on the way, it should have been here before the 1600kv.... I ordered the 1300kv and the new one piece, 3-shoe clutch adapter w. shoes, bells and all from impakt first. Then I was not sure if it would maybe be slow, so I ordered a 1600kv too from mike the day after the 1300kv shipped and figured I would always need a motor. Nice to get one more while they last too.

I hope the setup will work, I have some help from the motor-mount transfering alot of heat from the motor and using the whole chassi as a heatsink. The mechanical brakes with 0% brake set on the esc/motor will help ease the load too. And I imagine the clutch makes accelerating from standstill easier as well. I don't know if it will make that much difference, but I have a feeling these things are part of why the current setup performs so well and stays cool.

Even if it all works out, I will still be looking at used motors in norway for a milder kv. I remember seeing a medusa 850kv, and a 1515/2Y/F sell not long ago.

Long post, I appreciate any input, thanks,

Thomas Garvik

[othello]

Solid piece of hardware. Mine even worked without heatsink used in my 3.9-4Kg Buggy with a Neu 1512/2Y (1400kv). With heavier vehicles a small heatsink is recommended. I fed it with 9-12s A123 (11-12s with a Neu 1515/2Y - 1100kv).

A more up to date software would make it even better as Lutach already mentioned.

I would not worry using a 1300kv motor with 8s lipo (as long as you can gear your car for higher motor rpms). My old Crono buggy used a 52t spur (more likely to be found in a truggy nowadays) and had an overall gearing of 1:13.2 with a 13t pinion. Perfect in conjunction with a high revving motor in a buggy. Tons of power, low amps and long runtimes. My Neu 1512 with 1400kv reached well into the 42000-45000rpm range and stayed reasonably cool.

[el tomaso]

I have read a little bit about programming the jazz, and one thing I notice is that the manual is very hard to understand. I see one needs a jumper to program it manualy, I didn't get one. Is it supposed to short the three pins? I could make my own then...

I hope its not too much to ask, but could any of you kontonik experts write up a quick set-up guide for lipo powered cars, I tried searching but I only found quides for heli setups.

Thanks for you help!

Thomas Garvik