Fibretech FlyPAN 2015 Dual Diag 12S

[okp]

yes, but does it mean that you have your power supply not connected to your wall domestic electricity ?

 

[torqueboards]

yes, but does it mean that you have your power supply not connected to your wall ?

Depends - the power supply should have an on/off switch even if its connected to the wall. Does yours not?

 

[okp]

it does... when I said that the charger was OFF, it meant that the power supply switch was turned off.

 

[okp]

well, I finally made it. that was though. really. I need to find a way to get rid of this spark when connecting the lipo to the charger. Something was also probably wrong because I had a short spark when connecting the lipo to the eboard power switch where usually I don't have any spark (and never had one) but this time I had a short one... then powered on the board... was OK, some tx trigger pulls... wheels rolling.

I then come back to big spark land... trying to connect the lipo to the charger. I have this first massive spark, then I try to plug it again, spark is smaller.. then again ... commitment.. and I got both wire plugged. Man... what a journey, this was getting me mad as you don't expect it.. after 30 minutes you just woke up... and especially in a short apartment where a small issue can take big proportion... I would like to avoid dropping the lipo from the 3rd floor to the ground on guys scooters... just neighborhood friendship.

I then went for the balancing cable.. and got the battery identified as a 10S... the battery is now charging...

thanks to torque and richard for the fast/quick support. much appreciated guys.

here is the video... welcome to sparkland !

[youtube]SEKz0md2-M0[/youtube]

 

[okp]

just back from the short session. got measurements for you

I also got video footage in 2K 30fps.. just to try.. I will check if it's OK later on today - I just extracted one for the guys that would like to see the torque at half throttle

[youtube]iYnpXeu1gak[/youtube]

and some short stills

I just did smooth cruising (didn't pull the trigger more than 2/5 (less than half) and I reached easily 35km/h with a tremendous torque which is already quite impressive if you curve fastly). You also feel slightly the additional weight compared to the 7S setup. But this thing is rock solid and even a bit scaring when you first try it.

My lightweight body armor...

and the figures : around 11 miles distance for 3196 mAh (I did bunch of small hills)

happy easter guys.

 

[Hightower]

Awesome okp! Happy Easter to you as well. It looks like a beautiful day for a ride. Unfortunately it's cold and rainy here in NY, so no riding for me today.

You gotta love the power in a 10s build. I was at a friends birthday party a couple nights ago and brought my board to show it off to my friends. Well they were all too drunk to ride it, as I woudn't let them, but we had fun watching it scream down the driveway and knock over big beer can pyramids lol.

How much throttle did you used to hit 35kph? I was at 2/3 throttle and hit 40kph and didn't want to go an faster for fear of my life! Also, I wonder what your acceleration is set to. I didn't notice a big difference between very high and high on mine.

Hope you're enjoying the holiday!

 

[okp]

great ! my acceleration is set to ... slow ! I was running medium on the 7S and that was quick impressive. But for the dual 10S... I think medium could be crazy.

very high?! you are a beast ! I hit 35km/h (not miles but km/h), that was my first test and wanted to be sure that i get more familiar with this new board

got a feedback from Bruno, great - in fact I just need to add a JETI Anti Spark connector on the charger side (or solder a 10 ohms resistor on the negative discharge bullet connector) and that should me ok ! Honestly for 13 euros - I am gonna get it in a French store... it worth it, every cents !!!

I was racing with an electric bike .... the guy stopped and shared his bike with me. Pretty awesome stuff.. !

Another view on Paris

 

[plottjs]

Hey okp,

not sure if you figured out your 10S charging situation but I may be able to help. I have been running 10S on my board for quite some time now and had the same sparking issue as you. I even made a 10s balance port just like you.

Using a 1010B+ iCharger, here is what I do (never had an sparks with this method)

1. Turn on power supply and iCharger
2. Plug in 10s balance port
3. plug in red main
4. plug in black main

When taking it off the charger, do the process in reverse

1. unplug black
2. unplug red
3. unplug balance cable
4. turn off power supply/icharger

 

[okp]

hey, thanks for your feedback; in fact I have not a 10S balance connector, but two 5S separated connectors connected to a balance board which makes 10S on purpose before charging. The issue is that if I try to connect both 5S to the balance board I will burn the balance connector (especially the LAST RED and the FIRST BLACK which make the junction) because, as torque explained before, each cell (from each 5S) may have different voltage and high current will be conducted through small wires; this is why I have two choices, either I build one 10S balance connector (which I don't want, especially because I am not a huge fan of sparks and I'm done, I prefer riding!), or I just get the 10 ohm resistor and connect it to the negative of the charger... or the JETI ASC 5.5mm which integrates it.

I will go for the JETI ASC !

 

[torqueboards]

It's weird how you have that spark issue. An anti-spark would fix it on the positive or negative wire. You can search for it online too.

Usually the spark only happens when current is flowing through the other end and you are completing the circuit.

I charge 6S packs in parallel for my 12S setup and it's perfectly fine. I never get any sparks. Quite odd IMO.

 

[okp]

yes, maybe it is the 3010b charger which is behaving this way. But honestly this morning I was scared, almost gave up but you guys convinced me to continue!

without you this shot would perhaps not have been taken

 

[Philosopher]

Just finished reading this whole thread. love what is going on here.
I am sooo torn between a powered standing scooter and a powered longboard. Seems that the scooter could more safely go faster (dual disc brakes, etc....) But your long boards are so very rad!
-Philosopher

 

[okp]

thanks! this thread is dedicated to the community - Without ES, none of this would have been possible.

The longboard is great fun, you don't have to get to mad speeds to have huge fun. My girlfriend is also following me and we are cruising together ! great moments.

go england ! floating on earth.

 

[torqueboards]

I doubt it would be the iCharger's issue. iCharger's are pretty solid. Best most affordable chargers IMO.

Just install an anti-spark resistor on their and you should be fine.

I remember before when I didn't have an anti-spark and I connected around a friend he ran away lol was scared.

 

[okp]

damn, bad evening news. I just wanted to charge the lipo, being confident after this sunny morning ride after being awaken in sparkland... to prepare for tomorrow's session.

I had a first big spark when connecting to charger which I was expecting, same as the last video, but at second try it went OK. Negative, positive discharge wire connected.

Then I connected the balance board and I had a spark on it. This spark has literally destroyed the little connector from the balance board and also part of the balancing on battery side.

Check the photo below... damn!

the battery seems to behave really weird...if anyone has a clue of what's going on, please advice

this is getting more complicated than I thought ! of course, I have checked, the (series) balance connector which has no short circuit to it - even if it's out of service now but it was a lovely balance board (7 euros without shipping) anyway. RIP !

I know this may sounds a bit childish for many people but I don't play with 42V balancing connectors and soldering in a really small/tiny apartment with no plan B at the 3rd floor... if I had a house, well why not.. but not here. From my point of view, why would you want a 10S lipo to have 2x5S balancing connectors as a finished product... 10S is 10S for discharge and 10S for balancing. That's a no brainer, especially for lipos.

=> got Bruno directly on a friendly call, he's going to arrange a collect by UPS on tuesday / so he does the adequate wiring. Much appreciated ! That will also allow an additional quality check to ensure everything is fine because I got the balance board toasted and it was plugged correctly (so I can keep the wolf from the door - in case!).

- SPARK : JETI Anti Spark (on order)
- 2X5S + Weird battery behavior : UPS Collect by Bruno

Hopefully I'll get back soon on track!

 

[thepronghorn]

Those two pins on your balance connector that are getting black should have the same voltage, so it's weird why they are making such a spark when they are shorted together through the balance board. Perhaps you could try measuring the voltage across those two pins with a multimeter before you plug into your balance board.

 

[okp]

yes these are also my thoughts but I have a doubt.. I slept on it ... Nevertheless, I am still going to send back the lipo to Bruno because I want to be sure the lipo is not damaged or has additional quality check and a nice "professional" 10S balancing connector but look at this :

- my toasted 10S balance board has two 5S balance connectors in series, one for each 5S (the last red connects on the PCB with the first black)
- Is there a specific order or location to plug each 5S into each balance connector of the balance board...?

my thoughts are that the same 5S connector from the battery always have to go to the same balance connector... so there is only ONE way to make the 2X5S a 10S.In other term, you cannot mix the A and B balance connectors from the lipo to the balance board.

Maybe I am wrong, just pushing something that came out of my mind and has not been addressed here yet.

 

[okp]

meanwhile, I am back from riding, I just can't charge the lipo because you know why, but I can use it

almost 18km distance for 3200 mAH used .. I just pushed the throttle in a clear, non pedestrian, safe area and got easily to 42km/h at half throttle.

so I would estimate with good throttle management to get like 40km of distance coverage with my setup... and a top speed... of I don't want to know

If anyone has a clue about the wiring feel free

 

[Hightower]

Ouch! Sorry to see your troubles with the new board. I took my board into the local RC shop that kicked me out a couple weeks ago. They were pretty impressed with my work! However, the shop owner begged me to let him "Fix" my batteries. He said that everyone buys HK batteries, which is fine because they are cheap, but he said that 80% of RC fires are caused by HK's pos/neg connectors (The red tipped 4mm). So for $10 and 20 mins later, he re-tipped my pos/neg leads and sent me on my way with a reassuring pat on my back.

It doesn't look like the pos/neg leads are the cause of your problems though. Your issue seems to be in the balance cables...I have yet to parallel balance charge as I only have 2 lipos, and charging them one at a time doesn't take me too long.

I first attach my batteries to my iCharger, THEN I power on my power supply and begin charging. I'm not sure if this is the correct order, but it seems the safest in my head.

 

[Hightower]

okp What app do you use to log your travel data?

42km/h?! You are pushing me to go faster now

Once you hit that 40km/h speed it gets pretty scary lol

 

[okp]

well IMO, the major danger is to get used to the speed... then you almost feel it as normal.. then if no luck something bad usually happens !

I use Endomondo on my iPhone, you also have a vidometer application that allows you to add an overlay while filming. Basically, I just start endomondo, put it in my pocket and go riding and check it when I am back at home. I don't have the objective to go faster always, just enjoying the ride and I notice that sometimes I go around 40km/h, but I hardly feel it while riding in fact.

my main priority (except having fun) is to ensure that I am riding on safety, for me and the pedestrians. I never ever push the trigger when I think there could be danger around. You never know, but if you ride often, you could anticipate many of the danger that may occur from others (and also from too much confidence !)

have fun ! this setup is way more fun than my old 7S and has a pretty impressive distance coverage for such power and torque.

 

[thepronghorn]

yes these are also my thoughts but I have a doubt.. I slept on it ... Nevertheless, I am still going to send back the lipo to Bruno because I want to be sure the lipo is not damaged or has additional quality check and a nice "professional" 10S balancing connector but look at this :

- my toasted 10S balance board has two 5S balance connectors in series, one for each 5S (the last red connects on the PCB with the first black)
- Is there a specific order or location to plug each 5S into each balance connector of the balance board...?

my thoughts are that the same 5S connector from the battery always have to go to the same balance connector... so there is only ONE way to make the 2X5S a 10S.In other term, you cannot mix the A and B balance connectors from the lipo to the balance board.

Maybe I am wrong, just pushing something that came out of my mind and has not been addressed here yet.

Yes that makes sense. If you switched A and B, you would be plugging ground into the full battery voltage, which would definitely vaporize your connector.

 

[okp]

some news guys ! The battery has been sent back to Bruno and he is actually modifying free of charge the balance connector and also doing a quality check which is very friendly/nice of him. I will get it by early next week - wednesday I think, if sent monday.

regarding the sparks... just got the measure :

fear ! I will keep you posted. I should be editing the video tomorrow if I have enough time.

 

[okp]

the revolution will not be televised!

 

[okp]

hope you like it - quick editing ! watch in HD 1080.

[youtube]n5BKXNxPkAM[/youtube]