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Type: Posts; User: Ross Kean

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  1. Replies
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    RE: Help me convert this power supply

    It all depends upon what you are planning to charge. If you are charging relatively small 2 and 3 cell (LiPo) packs, you might be OK - don't try to charge a 5S 3000 mAhr pack. Keep in mind that...
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    7
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    829

    RE: Help me convert this power supply

    A 10 ohm resistor will load the 5V line to half its maximum of 1 amp. The PS only is capable of 100 watts on the 12 (13)V side. THis might do it but you might need a higher resistor (20 ohm?) on...
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    1,353

    RE: MRC Super Brain 989

    I will be interested to see whether this charger lives up to its hype. MRC has had some "issues" in the past. Initially, I thought this might be a pretty good charger for the money but was quite...
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    RE: Crack in starter battery casing...

    You definately cooked it!! A typical 7 aH field battery should be charged at c/10 - 700 milliamps at most. Some will charge them at up to 2 amps but it doesn't do the battery any favors. Keep to...
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    19
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    3,841

    RE: MRC SuperBrain "989" Charger

    The maximum current at various voltages (total watts) is a critical specification for anyone buying a charger; especially a fairly "high-end" instrument like this one. I understand that the maximum...
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    3,841

    RE: MRC SuperBrain "989" Charger

    I strongly agree that an independent review would be very helpful. I know that there were safety related "issues" with a previous MRC charger and I suspect that there will be some reluctance from...
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    RE: Cutting reciever wire bad idea?

    Very bad idea. You could significantly reduce range.!!

    Ross
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    641

    RE: What's The Matter With The Forums Site

    I am still getting some links, pictures and adverts that come up with the "red X".
  9. RE: think a tower 75 at 90$ is great? what about a mag 91 at 63$ then???

    I just checked the website and they are listing the Sanye S91A at $82.30. Has the price jumped by $20? (Still a pretty good price but with shipping and probably no domestic warranty, it is hardly...
  10. RE: Marez on Parallel Operation - One more time.

    Everyone is entitled to an opinion. Unfortunately, the opinion expressed pays little attention to all of the possibilities. First of all, it would seem to me that the most likely mode of failure is...
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    RE: Capacity of DuBro Sub C NyStarter?

    If this is the one:

    http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXD702&P=0

    it is 1300 mAh

    Ross
  12. RE: Peak charging NiMH packs: do you or don't you? General consensus...

    :D Heavy water is D2O where "D" is heavy hydrogen or deterium. (one proton and one neutron for deterium and just a proton for hydrogen).

    I also peak charge both NiCd and NiMH packs - mostly...
  13. RE: Peak charging NiMH packs: do you or don't you? General consensus...

    Thats OK. I was just trying to inject a little humor into an argument that people are getting far too excited about!

    "EDIT AGAIN: It can also be called Hydrogen Oxide."

    My EDIT: Since we...
  14. RE: Peak charging NiMH packs: do you or don't you? General consensus...

    How about dihydrogen monoxide (H2O)??

    Sorry, I just couldn't resist (or should I say impede?)

    Ross :D
  15. RE: Sig Champion Fuel. Did I fry my engine.

    The black may be simply due to a loose muffler bolt. In many two strokes (especially if you are not using a muffler gasket) the oil will come out black due to minute particles of aluminum caused by...
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    RE: Fuel starvation in a dive?

    If you are accelerating in a dive, the fuel will remain in the back of the tank. If the fuel level is at least a third full, you will be OK on a modest (non-accelerating) downline. Otherwise, you...
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    RE: Over rated batteries?

    You are discharging at too high a rate (C/2) to compare to the manufacturer's ratings. To check the ultimate capacity, you should probably discharge at a c/5 or c/10 rate to around 0.9V. If you are...
  18. RE: Need to increase the system memory on server

    Me too

    2:51 PM Atlantic time
  19. Replies
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    RE: Does nitro fuel evaporate ?

    Some fuel constituents are volatile and as other have said, open fuel will suck up moisture from humid air. The amount depends on the amount of air circulation (a few litres of humid air doesn't...
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    RE: YS-45 FS Issues

    Dave

    Thanks for the fast response. I evidently made some incorrect assumptions with the limited (incorrect) information I had when I tried to set the engine. I actually managed to get an...
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    YS-45 FS Issues

    The RCU search function doesn't work very well with numbers!!! I looked back over the last 20 or so pages and didn't find anything relavent so forgive me if this has been dealt with before. I...
  22. Thread: decals

    by Ross Kean
    Replies
    11
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    1,150

    RE: decals

    If you can exactly match the red background, you could print red background on white decal paper, cut out the whole works in one piece and paste it on. I suspect, however, you would not get a...
  23. Thread: CBA II

    by Ross Kean
    Replies
    4
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    416

    RE: CBA II

    All it needs is a capability for a higher load! It would be nice to have something capable of testing larger packs (without paying big bucks). Unfortunately, even if they came up with a version...
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    RE: mousse can muffler?

    The mousse can on the SPAD website http://www.spadtothebone.com/SPAD/Mufflers/ uses the front half of the muffler as the header. I have tried it and it works well. Nothing extra to buy.
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    RE: NiMh 1.2 volts ?

    1) Your batteries are likely toast although you might try using a slow charge to bring them back.
    2) NiCd batteries have the same nominal 1.2 V as NiMH so NiCd won't help very much.

    I suggest...
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