R/C Tech Forums - View Single Post - NEW HOBBYWING STOCK SUPERCHARGED SOFTWARE
Old 04-29-2010 | 11:37 AM
  #28  
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razzor
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Joined: Aug 2005
Posts: 2,812
From: Durban, South Africa
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Originally Posted by steliosh
You don't need to flame me, it was a only a joke. A coincidence really... HW said "TNT" and then the "grenading" comment, it was really something so appropriately comic! I have PAID for my equipment, so I'm allowed to point to a good joke, when I see one!

Anyway, back to business:
I tested briefly the newest SW with mixed results.
First of all, I set it up as per the HW PDF recommendations, that is:
9. Option 8
12. Option 7
13. Option 3
14. Option 5
15. Option 2

I didn't have your settings with me, at the track, so I went on by the pdf...

I remind that I run a 1/5 motorcycle with Xerun 60A and Nosram 13.5T sensored, geared in the longish (as I already wrote in the other thread).

Well... At first I did a medium throttle warm up lap, it all went fine, then on the main straight (60m plus...) I open the throttle fully and the bike wheelied to God and tumbled! It caught me by surprise, to be honest! I didn't expect it to do so with a "humble" 13.5T!!!! I turned around and started running the main straight up and down, doing wheelies! It was huge fun! Anyway, I remembered why I went to the track (there were no... spectators, as well!) so I started lapping...

At one time, after about 3-4 minutes, I drove the bike to the pits, to do some tinkering with the suspension. I didn't shut off the Rx or Tx, just did my work for a few seconds, then sent it out in the track and it was going SLOWLY! Slowly as in 27T tin-can brushed! What the heck?!

I returned the bike to the pits, lcd card in hand, I reran everything once, then did the Tx/Rx settings again and sent it out. It again had huge (wheelie!) power, so I started lapping normally... and carefully due to the newfound power! At around 3 minutes, it slowed down again. The battery I was using was a hardcase 3200/20C from rcmart. I removed the battery, let everything cool down for a few minutes, not that the motor was hot to touch, but anyway, I had to make sure everthing on the chassis was still tightly bolted and visually intact...

So, new battery installed, a Turnigy 3300/30C, the bike is going fast for three minutes, then it slows again. Turn it off, rerun the settings with lcd card, rerun the Tx/Rx settings, send it out, it is fast again!
I did it three times with this battery, with capacity to spare...

What gives here?!!!

I have to say, I installed the FW from my computer at home, twice, as usual with the latest FW's just in case, and had set the battery cut off at 3.0V.
I never really ran out of battery juice, or had any "thermal" issued with either the ESC or the motor. They were both warm, but easy to touch, and are both in the airflow, plus the ESC fan is always working.

Any ideas, anyone?!!!
Most likely problem is the esc is activating the lipo voltage cut off.
Check it and set to 3v or 3.2v.
Also using a battery around 3000mah is very likely not going to last longer with the supercharge feature.
We are close to cut off using 5000mah batteries in a 5 min race.
The new software uses a lot more mah compared to the old pre supercharge versions.
Only other possibility is temp cut off which you can disable and try but do check that esc is not getting hot.
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