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  1. P

    Turnigy Watt Meter vent

    Would the Turnigy Watt Meter succomb to a premature death if I sealed off the vent on the underside of the unit? Has anyone tried running a sealed unit?
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    The importance of good quality torque plates

    OK, This is what I assume might have happened. Tightening the pinch-bolt is what initiated the failure (the crack that you noticed). The spreading of the dropouts, caused by the wedging from the axle, further weakened the bond, to the point that the only place the bond had any integrity was in...
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    The importance of good quality torque plates

    +1 I suspect this is the main problem.
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    neptronix, I remember reading about issues when using TVC but can't remember what they are off-hand, so I simply avoid it and use TCS instead. TCS 95% will get you ~4.13v - 4.14v. I believe you can set in 1% increments via software only. Otherwise 5% increments via the charger. Also don't use...
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    cwah, Sorry, It isn't literally called "passive mode". Press the mode button until you reach "Balancer Mode" Just charge/discharge in lipo mode and monitor closely. Doing so will reveal any bad cells. From what I've read, it isn't worth the hassle, or the return shipping cost, to exchange lipo...
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    I see your logic neptronix. Thanx
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    Neptronix, Do you find that these dud cells diminish in capacity faster (compared to a healthy cell) over time?
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    First off, I don't know how high the cell voltage will terminate at TCS 75%. What I do know though, is that at 40% TCS, the cell voltages terminate at ~3.85-3.86v. So at TCS 75% your probably looking at a significantly higher termination voltage. Disregard the % capacity values computed by the...
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    Hyperion EOS 1420i NET3 14s Balance Charger...

    Need more info. What size packs are you charging? Lipo? Are these new packs?
  10. P

    resistor on 100v lipo pack

    Ahh Yes, You're right. I overlooked this possibility for those that leave their batteries connected. In my situation I will be removing the batteries to charge and for the brief periods that I leave them connected when not riding, the battery drain is not a concern. I'll simply turn off the...
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    resistor on 100v lipo pack

    Yes, you would need a switch capable of handling the high "DC" voltage and amperage. Unfortunately these are big and expensive. By using a precharge resistor in parallel you can get away with using a switch with a somewhat lower rating (although you may have to replace it occaisionally). This...
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    resistor on 100v lipo pack

    It would be cool if you could include a feature to switch on a booster pack.
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    resistor on 100v lipo pack

    Why is everyone using 2 switches? All you need is one, with the precharge resistor wired in parallel. Flip the switch one way (the normally open position) to connect only the precharge circuit, flip it the other way and it shorts out the resistor, closing the primary circuit. Am I overlooking...
  14. P

    Kickstand

    Doh! :shock: You are one brilliant dude! Thank You!
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    Hyperion 1420i For $110!!

    Betcha he'd show up if we started a wheelchair category on the forum. I can visualize Dual Clyte wheelchair applications. Those guys don't know what they're missin. Think of the amount of lipo they can pack under that seat. :P
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    Hyperion 1420i For $110!!

    Well, if you don't have the manual, do a google search with your model #. Surely there must be a site revealing the specific features of your laptop.
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    Kickstand

    Thanks for your thorough response Joe Perez. Although I still have my concerns about deforming the aluminum frame, I'm favouring this kickstand.
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    Hyperion 1420i For $110!!

    This is the ultimate USB isolation solution http://www.wheelchairdriver.com/hyperion-1420-bluetooth-conversion.htm However, Be aware that doing this mod voids the warranty.
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    Is one torque arm enough?

    I totally agree with you. I believe the epoxy method could work in a torque arm application, providing the axle nuts are tight and the cutouts for the dropouts are snug. But I can also forsee problems when using regen or when there is excessive force applied to the torque plate in the same axial...
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    Is one torque arm enough?

    Well, Being a certified welder, you can imagine what my biased opinion would be regarding this "glue". I had my doubts just like you guys. A company I worked for was testing this glue-bonding method with aluminum. I was truly shocked when I examined the results of the stress test. The aluminum...
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    Is one torque arm enough?

    Glad to hear you resolved the rocking issue keysersoze. Seems like you did a thorough prep job. Gotta be the poor quality epoxy.
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    Kickstand

    Thanks for the detailed post with great pics Joe Perez! Looks like a quality product. Wish my bike had a mounting plate like yours :cry: That would eliminate my main concern of deforming the aluminum frame. You could really tighten that sucker down. Does this model have more ground clearance in...
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    Are ATX power supplies adaptable to the 1420i?

    There is logic to my madness. If you connect USB cable first and then make the mistake of connecting "+" next ...POOF :shock: We are only human and mishaps occur. Just ask the lipo guru's with KFF. For me, It's easy to remember "negative first, positive last". This leaves only one more cable to...
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    Is one torque arm enough?

    keysersoze310, You had a problem with a very loose fitting axle, resulting in a lot of rocking play in the torque arm and loosening of the axle nuts. Did you ever resolve this issue? If you continued to ride in this state, something is bound to fail. The integrity of the doctorbass torque arms...
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    Kickstand

    Another interesting option. Please post your impressions when you get it mounted.
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