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Got mine yesterday....:yes: |
Awesome... ! it's super fast shipping... I pretty much order everything I can from there...
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Has anyone tried the castle hydra controllers in a car?
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My Jazz 55-10-32 is still working great with my 8 pole Neu 1912. Brakes like a demon. :)
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Who carries the Jazz controllers? I went ahead and got the turnigy and it looks like its going to work. I now am needing a good controller that will handle up to 5S and 6S for a basher but it has to have brakes. My 9920's are great, but get really hot under racing /bashing conditions even with near stock gearing. I'm running it with a 7XL and 8XL on two basher emaxx's.
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Also, does the jazz 55-10-32 have a linear throttle curve in "car mode"? I've noticed that the HV110 and Sentinel both exhibit an "all or nothing" throttle behavior. In other words, the throttle on these airplane controllers seems to act as though my throttle exponential is set to +50%. So once I hit about 50% throttle, the truck accelerates like its WOT and is very hard to control on a small tight track. |
My Jazz controllers are one, if not the smothest HV controller I have. It doesn't act like the airplane controller at all in car mode. The controller will respond to all your throttle commands. This videos I made were with the 40A version: http://www.youtube.com/watch?v=-yrzb2EYsug, http://www.youtube.com/watch?v=9330XxFGth0
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The only thing I would add is that if you go with a HV setup, pick an ESC that will handle at least 2s more than you plan to run. The back-EMF from the motor braking at high voltage can get quite high and may exceed the FET and/or capacitor ratings. And if you plan to use lipos, be aware that these higher-voltage pulses could negatively affect them, but have no actual comparison data to support this - just common sense.
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I wonder if the sampling rate is too slow? I noticed spikes bigger than that (up to 4v) with my Neu 1512/2d on 4s...
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Might be something to look into. I know I was using an analog display (to capture those peaky spots), but maybe the inertia of the moving needle caused some overshoot? I know that my Fluke 87 didn't catch spikes that high, but figured it was the slow sampling rate...
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Same findings while braking using 10s1p A123, Jazz 55-10-32 and a Neu 1512/2Y in a 11lbs truggy.
Here is a graph of 3 accelerations and brakings. The green curve shows motor RPM. -> Voltage rose between 1-1.5V while braking -> Amps spiked at below 20A while braking |
Hmm 20 amps while braking...I thought it would be more. Nice setup...
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Most A spikes I've seen under hard braking was less then 3A.
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When did you order yours?
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what's the size difference?... I'm waiting for 2x 1527's now....
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Did anyone already mention the new Kontronik Jive HV/LV ESCs? They're basically improved Jazz's and the HV versions can handle up to 12S!
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what kind of amps can that thing handle?
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The spec sheet can be found here.
They did not rate it yet for burst current. The smaller one is rated for 60A cont and the bigger one for 80A cont. The product description in german states that whith proper cooling they are able to provide up to twice the amount of Amps continouus (120 or 160A). I guess burst current may be 20% higher off those doubled values. Theoretically those ESC should be able to push a 1:5 rc car (5.5 and 7KW continouus with 12s Lipo and 3.7V per cell). Judging from my eagletree records which show Amp peaks of up to 120A on the Jazz 55-10-32 i run (speced for 65A burst), i have no doubts about their statement that those continouus Amp values are minimum values (which can be doubled with proper cooling). 2 interesting features on the jive series ESC: they are waterproof and do have an integrated switching BEC up to 12s lipo. Small downside. Only forward with brakes (no car mode with reverse). |
Hello guys!
Although the thread is a bit old, I've got excited about the Kontronik 55 controllers. I've got a MBX-5T truggy and I want to use 2x 4s 4900mah FP packs( 8s in total). I'll use my old 1950/10 motor. Gearing will be something like 17-20 pinion teeth over the standard spur size of the truggy( sorry, I don't know what's the size of the spur). Will the Kontronik be able to handle this setup? I might use additional cooling and so forth, but I need something to handle the truggy with some level of effeciency? |
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I think the stock spur is 48T. With 8S I would first try a 13 or 14T pinion just to see if the Kontronik will handle the load. |
As your motor will spin at almost 40000rpm with 8s you should start with smaller pinions as Lutach already suggested it: 12, 13 or 14.
With a 13 tooth pinion your cars top speed will be around 40mph. Differential Ratio: 4.6 Transmission Ratio: 1 Other Ratio: 1 Spur Tooth Count: 46 Pinion Tooth Count: 13 Total Voltage: 29.6 Motor KV: 1333 Tire Diameter (inches): 5.6 Tire Ballooning (inches): 0 Motor Current Draw: 0 Motor coil Ω: 0.017 Spur/Pinion Ratio: 3.54 : 1 Total Ratio: 16.27692 : 1 Tire Circumference (inches): 17.59 inches (446.86 mm) Total Motor Speed: 39456.8 RPM Vehicle Speed: 40.39 mph (64.87 km/h) Estimated Adjusted Speed: 38 mph (61 km/h) - 5% loss Effective KV Value: 1333 Here is a video with the shortest gearing (1:12,13) i used with the Jazz 55 (with 10s1p A123 around 30v and 30000rpm at full speed) and the corresponding eagletree graphs: whole run, 1 minute in detail, speed passes. There was no cogging but i sometimes noticed a very small delay (say 0.2sec) when starting from a stand still and hitting full throttle. I still use a small heatsink "glued" to the Jazz 55-10-32 cooling plate. With better cooling mods RC-helicopter flyers push this small ESC up to 4KW. |
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