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Old 08-26-2003, 10:11 AM   #1
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Default Ultimate Discharge Tray

I just bought the new Rayspeed EXCEED Discharger from SpeedTech RC and I think it's the best tray available, especially for 3300s. The tray provides automatic cutoff (no more having to keep an eye on the lights to prevent too deep a discharge) and two separate discharge rates.

Some specs from SpeedTech:
Battery type: Sub-C NiMh, NiCD
Cells: 1,3,4, o4 6 cell
Mode: Equalizing (5 Amp discharge), Conditioning (1 Amp discharge)
Cut off voltage: Ni-MH (0.9V) NiCd: (0.1v)
Built in single fan
Led lights: Red = Power, Auto cut: yellow
Case size 161 x98 x47mm (which is about 6 1/2 inch x 4 inch x 2 inch)

It's a solidly built and compact unit and well worth the $56 price.
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Old 08-26-2003, 01:43 PM   #2
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Thank you for the review, i had been looking at this for awhile.
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Old 08-26-2003, 03:07 PM   #3
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Where can you get them from?
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Old 08-26-2003, 03:20 PM   #4
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I am not too crazy about traying Nimh.

I think the trays take them down too far and effects the life of the cell. I usually dump them at 20amps to .90 per cell and there is enough of a bounce back on voltage not to effect the batteries and their life. With a tray you slowly force the batteries down and they cannot recover the voltage, which is what you need especially if you store your batteries for 2 to 3 weeks or longer.

When I would tray Nimh cells would go funny and start false peaking after resting. I have not trayed some 3300s I bought in Jan and the numbers I am still happy with. You can ask many sponsored guys and they probably don't tray.

With Nicads tray them dead short them sure, not Nimh. They are like apples and oranges, totally different.

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Old 08-26-2003, 04:11 PM   #5
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There is a big debate over whether 'to tray or not to tray' 3300s, however from my experience, traying always helps. Firstly, it drains the batteries further which gives them more run time and voltage when they are charged again, and secondly, it helps to equalize the cells all to the same voltage which helps performance.
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Old 08-26-2003, 05:04 PM   #6
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what up 2 tenth?
Are you racing tomorrow at the rain city? maybe I'll see you there tomorrow Franko
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Old 08-26-2003, 05:37 PM   #7
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Yeah, I should be there Franko. My SD is finally hooked up well with a fresh set of CS-27s. Just to stay on topic, I'll be bringing the new discharger if you want to check it out.
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Old 08-26-2003, 06:52 PM   #8
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I'll be there tomorrow. If Peter isn't there than I'll be buying a new set of the 27's (the dish rims a sweet, and they won't bend). I wanna see the new chassis on the Yok. Oh yeah, this is the discharger forum, oops . Well just to stay on topic, I can't wait to see the tray!
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Old 08-26-2003, 08:56 PM   #9
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Hmmm sounds interesting sam. Just wondering, if we race 19T tomorrow, is it on foams or rubber?
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Old 08-26-2003, 10:30 PM   #10
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Yeah, I was wondering what the whole story on 19 turn tires was. I heard we won't be switching to foam till the new carpet shows up?

-Ryan "Ski bum" Robison
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Old 08-27-2003, 08:41 AM   #11
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Tomorrow, erm, today the 19T class will be on rubber tires. Some people wanted to switch to foam right away but Debbie said no way. They still haven't figured out how much to charge for tire truing, and need more time to setup the tire truing area.
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