Project Thread: Morphine Prototype

[gwhy!]

Dont get ali tubes to make shims, All you need is some flat 1-2mm ali sheet its easy to cut with tin snips and very easy to bend into any shape that you need.

[SHiFT]

FYI:

A 4 inch long piece of black ABS pipe cut into 2 pieces did the trick.

I just cut it lengthwise, and clamped it around the tube with the motor mount. The pipe is not even bolted in and it's very solid. Kudo's to Recumpence's design as it clamps extremely tightly.

I've since put a full battery through the system at full speed (mostly), and I had 0 problems.

Now it's time to work on another battery for higher speed, rear geared hub, and some cosmetics.

Even with only 1 battery, I feel like if I pin the throttle and pull up a bit, I could do a wheelie. But I like my skin on my body and not the road, so I haven't tried that yet.

Awesome, stuff. Can't say enough good stuff about Recumpence's Drive system.

[AussieJester]

There will be nothing wrong with the cells in the battery
but if you dont want it I'll happily take it need more packs
For my rc heli

KiM

[SHiFT]

So quick question. I FINALLY got my replacement battery from HobbyKing - the wait there is horrendous.

So, I will hook these up together for discharging, but for charging should I charge them together to maintain the balance, or charge them separately? It better to charge separate right? Just asking to be safe, because I don't want to find out the hard way.

Thanks!
SHiFT

[Andje]

what kind of charger are you using?

[SHiFT]

I have two Zippy 5000mAh 6s 22.2v batteries

Charger is:
Hyperion EOS 1420i NET3

Thank you

SHiFT

[Andje]

same charger as mine; you will leave the two bats connected via a red and black to make your 12s, this leaves you a red and a black from each batt that goes to your charger. If you only have two batteries I would balance charge them every time by connecting the two balancing jst's. Then you tell your charger to be set for 44v or 12s and then set it for 5 ah and then just start. It will say it reccomends balance leads unless they are plugged in, but they don't need to be if the two batteries start off balanced and are used together they will tend to stay balanced for months as long as the cells don't drop below 3.5v. So if you bury them in your bike you can still charge just via the main +/- leads or if you have them easily available you can just balance charge them every time. If you ever step up to 4 batts for 12s 10ah then you could "bulk" charge them as one large 12s block, but to balance charge you would have to parallel the balance wires or take apart the pack to balance each brick.

[SHiFT]

Awesome. Thank you for the info. I'll go with your recommendation.

SHiFT

[SHiFT]

So I hooked up my second battery as you recommended. I've got both balances plugged in with the batteries in series. Only thing is. It's charging at less than a half amp... It has been charging now for over 2 hours. Am I doing something wrong? I have it all setup the same way as the single battery with the exception of the total voltage and cell count. Any ideas would be appreciated. I am mostly just worried I am charging them for too long and risking a fire.

Thanks,

SHiFT

[Andje]

no; there is no such thing as charging for too long, only charging too high. With the hyperion you should be able to have good peace of mind for charging your lipo; it's almost certainly the safest method there is, and there is really no chance of fire if your batts have never been mistreated and you never leave them unobserved for more then about an hour. If you drained a cell past 2v or were charging without the balance taps then things could get wonky, but I have done both these things accidentally and have been lucky with my lipo not puffing or burning. It's like when you are riding; with vigilance and following the rules you are in a very safe realm.
Now, if you are charging your batts to 48v you should be able to get up to about 10 amps of charge current (550w/50w=11 amps~). You could be restricting it either in the charge settings under your primary menu; there is a digital setting for max amps, or it could be that your powersupply isn't capable of putting out enough power to get your hyperion to it's 550w charge max. What PSU are you using?

[SHiFT]

Ok that's good to hear. Makes me feel a LOT better. The batteries are up at 49.xxx volts right now. I am using a Meanwell, the small one, and input is 29.xx amps according to the hyperion menu. The menu says the batteries are only at about 87% charge.
Amps are set to 10.0a, it is what the menu had set as the default for a 10,000mah 12s battery.

Thanks,

SHiFT

[sn0wchyld]

Yes, 5000mAh is nothing, I basically got 4 test runs in today, and decided not to run the battery out too much. This relates to the "almost" dying part - but I touched the soldering gun, the soldering clamps annnnnd... both leads of the other LIPO battery. Yes, it sparked in my face. Yes, it instantly melted the contact points on the soldering clamp and the leads of the battery. Yes, I felt like I almost died. And no, I'm not touching that battery again. I am a noob with anything related to this, and even more so with LIPOs. I'm not taking the chance using a battery that might have sustained damage and just ordering another one. In the meantime, I'm running on one.

To be honest mate I think the battery would probably be fine, so long as the short was for a brief moment. do you have a lipo charger that can check the IR of the pack? How long did the flash last? do you recall if the pack got warm at all?

I, and quite a few others from what Ive read have on occasion shorted out lipos for brief periods. And yea, its one way to get the adrenalin pumping!!! In my case I had decided to test my connectors, before sliping the cover on 'em.... just plain stupid. luckily the flash was only for a moment, and apart from a bullet connector with a gaping chasm down one side there was no harm done. the discharge wires and pack didnt even get slightly warm, and it didnt change their IR or capacity at all. And I've been using it for months since with no issues.

[recumpence]

Your pack is fine. The wire blew as a fuse would. The pack is fine.

I actually plugged two packs together once. WOW was that freakin CRAZY!!!!

Both packs were fine. The wires exploded, but the packs were fine.

Matt

[sn0wchyld]

lol. new marketing ploy... 'lipo packs, now with built in 4mm fuses!!'

[SHiFT]

Haha. K, thanks for the info. It's good to know in case I ever do that again.

[Gordo]

I did not see anyone tell you to not bolt through a tube, ever. It will just crush the tube unless you weld a small piece of pipe in the frame where you are clamping. And welding on Al is no good.

[SHiFT]

That's great advice, never thought of that. I did the PVC route this time, but now I know for the future.

Thanks.

SHiFT

[SHiFT]

I finally finished my bike. It's not elaborate, but it's done for the most part. Thanks so much for all the advice and assistance, I'd never have even started this project were it not for the information and expertise available here.

SHiFT