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  • bartroosen's entry Easy Bluetooth Subwoofer Speaker (80W) is a winner in the Box Contest 2017 contest 1 month ago
  • bartroosen's entry Easy Bluetooth Subwoofer Speaker (80W) is a finalist in the Box Contest 2017 contest 1 month ago
  • bartroosen's instructable Easy Bluetooth Subwoofer Speaker (80W)'s weekly stats: 2 months ago
    • Easy Bluetooth Subwoofer Speaker (80W)
      15,312 views
      315 favorites
      27 comments
  • bartroosen commented on bartroosen's instructable Easy Bluetooth Subwoofer Speaker (80W)3 months ago
    Easy Bluetooth Subwoofer Speaker (80W)

    dissable ad blocker, wait 5sec and skip right above that's all

    Nice! Thank you very much

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  • bartroosen commented on bartroosen's instructable New Powerful 1800W Electric Longboard3 months ago
    New Powerful 1800W Electric Longboard

    Topspeed on flat roads is 40kmh and the time I went 45kmh I was going down a bridge, full throttle and sudenly I crashed.I always track my runs and the speeds are very precise.

    I felt only 2 times until now. The first time (40kmh) I felt with my first build due my brake because they were programmed at 100% so insane braking power when riding 40kmh so I felt pretty hard.Next fall was also with my other build (45kmh) because there was a tiny cable from the trees which laid over the bike pad VERY dangerous, damn I felt so freaking hard.Really everything I carried with me was broken (phone,bag,jack,clothes and big wounds).This build is really much better and smoother and I'm more carefull these days ;)

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  • bartroosen commented on bartroosen's instructable Easy Bluetooth Subwoofer Speaker (80W)3 months ago
    Easy Bluetooth Subwoofer Speaker (80W)

    Thanks!Sorry but I don't know that, I don't notice that the 2 L and R speaker aren't the same

    Thanks man! I will check out that module maybe if I make a new speaker!

    Thanks!and yeah they are both different but it doesn't influence the audio.

    View Instructable »
  • bartroosen commented on bartroosen's instructable New Powerful 1800W Electric Longboard3 months ago
    New Powerful 1800W Electric Longboard

    Thanks!

    Oh yeah I know what you mean! Damn that's a really good and clean idea! Thanks!

    Thanks man!Everything looks good exept the 25T and 12T pulley.I have also used a 12T before and it was skipping while braking/accelerating so I would really recommand a 30T and 15T pulley.This will keep your topspeed around that 45kmh.

    I see you got some 83mm flywheels, the 30T will be perfect. I'm making the same for my next build.I slightly changed the 3D parts to fit the pulley and stuff like that so if you want the 3D file let me know ;)

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  • bartroosen commented on bartroosen's instructable New Powerful 1800W Electric Longboard3 months ago
    New Powerful 1800W Electric Longboard

    Yeah that's true the cells can be very dangerous!If they get punctured they are dead and can catch flames so you can always protect them a little bit more than what I did.I'm thinking of placing some thin hard plastic underneed the rubber.

    Thanks!In our city me and my friend are the only one riding an esk8 and we have almost the same boards.I have no riding video's yet of my new longboard but rode around 100km on it and it rides so much better than my previous build, especially the esc is much better.It's hard to make video's and I'm scared to film with my phone while riding because previous time I felt against 45kmh going downhill and my phone, backpack, jacked broke and a lot of wounds, so I'm a bit scared but I have a few video's of my friend's esk8. I will try to share them ;)

    Haha yeah that would be awesome!I have uploaded every video I have at the moment of riding our esk8.https://drive.google.com/folderview?id=0B_Jx_l9eKipoWTBKbVNUT2xnR0UThey are in the same folder were I put my runtastic logs so everybody can see the video's :)

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  • bartroosen commented on bartroosen's instructable Easy Bluetooth Subwoofer Speaker (80W)3 months ago
    Easy Bluetooth Subwoofer Speaker (80W)

    Thanks man, I really appreciate these comments!

    Thanks! and nice good luck

    Thanks!Yeah I know what you mean, but it's only noticable at very low volume so when I'm listening to music at normal volume level you can't even hear it.There are also small modules you can put between your aux to filter that bit of a noise.

    Thank you so much!

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  • bartroosen commented on bartroosen's instructable New Powerful 1800W Electric Longboard3 months ago
    New Powerful 1800W Electric Longboard

    Hi, yeah a lot of people are asking me this but if you're cruising forward there's really no problem at all.Only if you take a corner you lean to one side so in my case if I take a corner to the left the powered wheel will not have that much grip so it can slip.But I almost never accelerate when taking corners so really no problem with 1 motor.

    Thank you so much! I really appreciate nice comments :)Yeah I made also an esk8 for my friend and we are the only 2 in our city with an esk8 so everyone is always watching when we are cruising :DThanks for voting! I really hope to win something nice because I feel that I can never stop this hobby, maybe after a few months my new esk8 will be finished and then I will try to sell this one ;)

    Thanks!Never had issues because dirt or rocks came into my motor.Also rain was no problem at all, the only thing is that the board and your legs will be dirty as f*ck if you drive through rain or wet roads.

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  • bartroosen's instructable New Powerful 1800W Electric Longboard's weekly stats: 3 months ago
    • New Powerful 1800W Electric Longboard
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      116 favorites
      11 comments
  • bartroosen commented on bartroosen's instructable New Powerful 1800W Electric Longboard3 months ago
    New Powerful 1800W Electric Longboard

    The bms will not power off the battery when they are below a minimum voltage but the esc has overdischarge protection, so if the the voltage is lower than 3,2V/cell the esc will turn of and the battery can not be drained ;)I did some test runs and also cruised until the esc stopped because of the low voltage and the power cut of around 19,5V so that's perfect.

    Hi thanks!I don't use the bms output to power the esc, The esc is directly connected to the battery to give me the full power I need :)I only use the bms to charge the batteries and balance the cells.

    Thank you very much! :)I have not completely designed this power supply but changed some things.This charger was a broken so I changed the chip and voltage to get a constant current out of it to power the BMS. Now the power supply puts out 25,3V and around 4A charge current.Most power supplies are constant voltage so they won't work like this power supply was normaly designed as a constany voltage ps.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard3 months ago
    Powerful 2000W Electric Longboard

    Hi!1) if you want a 10S battery, I should go for a VESC. you can put 20 cells under your board if you make a ''2 layer pack'' 10 cells behind each other is around 50cm so perfect.2) I don't have a schema for the balance wires but you can easy search it on the internet3) It doesn't matter if the XT60 gets wet, if it gets really wet just clean it after your run.I rode a few times in nasty weather and there were no problems.4) My battery was never hot only the esc and the motor became hot but that's normal.5) Yep you can use that remote. Also perfect to use it on a VESC.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard4 months ago
    Powerful 2000W Electric Longboard

    https://drive.google.com/file/d/0B_Jx_l9eKipoT3hxL...https://drive.google.com/file/d/0B_Jx_l9eKipoTE1TT...These are 2 video's but we wanna make more "good" video's to put them on youtube.

    Yeah that's perfect you can find me as Bart Roosen, facebook is easier for me.

    Thank you!- For measuring the voltage left in the battery, I used a small "6S lipo voltage indicator'' which can be plugged in into the balance connector of the battery to check the voltage of each cell and the total voltage, they are very cheap.- Yeah you can still ride it like a normal board, there's a little bit more resistance but not that much.- Well if you're accelerating very hard, then the motor sound is also pretty loud but that's handy to let people/bikers know that you are behind them so they need to watch out if you pass them.I'm building a new build at the moment which should be finished in 2 weeks, I did some changes and I'm also going to make an instructable of my new and better electric longboard ;)If you want I can already share some parts which I should really rec...

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    Thank you!- For measuring the voltage left in the battery, I used a small "6S lipo voltage indicator'' which can be plugged in into the balance connector of the battery to check the voltage of each cell and the total voltage, they are very cheap.- Yeah you can still ride it like a normal board, there's a little bit more resistance but not that much.- Well if you're accelerating very hard, then the motor sound is also pretty loud but that's handy to let people/bikers know that you are behind them so they need to watch out if you pass them.I'm building a new build at the moment which should be finished in 2 weeks, I did some changes and I'm also going to make an instructable of my new and better electric longboard ;)If you want I can already share some parts which I should really recommend to use instead of some parts in this instructable?

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard4 months ago
    Powerful 2000W Electric Longboard

    Hi man!I have not done a acceleration test VS the boosted board but I can tell you some specs which I tested.I made the same electric skateboard as in this instructable for my friend so now he has the same only difference is that I connected the batteries to a BMS. So it will make sure every cell has the same voltage, also while riding.1) I did a few range tests and I can cruise more than 16km on his board so that's awesome. Top Speed is tested on a smooth road and was 42kmh.2) I have driven through wet surface and the board was completely wet but had no problem, the esc and the motor are waterproof so make sure there can go water directly into the battery (it's no problem if the xt60 connectors get wet).3) I have bought everything double to make another esk8 for my friend.One motor is ...

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    Hi man!I have not done a acceleration test VS the boosted board but I can tell you some specs which I tested.I made the same electric skateboard as in this instructable for my friend so now he has the same only difference is that I connected the batteries to a BMS. So it will make sure every cell has the same voltage, also while riding.1) I did a few range tests and I can cruise more than 16km on his board so that's awesome. Top Speed is tested on a smooth road and was 42kmh.2) I have driven through wet surface and the board was completely wet but had no problem, the esc and the motor are waterproof so make sure there can go water directly into the battery (it's no problem if the xt60 connectors get wet).3) I have bought everything double to make another esk8 for my friend.One motor is powerful enough in my opinion.I will post a few video's to see the acceleration of it.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard4 months ago
    Powerful 2000W Electric Longboard

    Hi!Thanks man love to hear that!I'm building my second esk8, in about a month I will upload the new instructable of the build process so stay tuned ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard5 months ago
    Powerful 2000W Electric Longboard

    Hi man thanks!-The total voltage is 22,2V because I have made a 6S2P battety pack. 2 batteries are always in parallel to double the capacity.-It doesn't matter how low the power of the charger is, it will only take longer to charger.With this charger it had to charge around 5h and my new charger only takes 1,5h.If you wanne ask more fb is easier for me ;) (Bart Roosen)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard6 months ago
    Powerful 2000W Electric Longboard

    This time I'm using a SK3-236Kv. But I should suggest to go for the NTM-270Kv or SK3-280Kv. I just used the 236Kv because hobbyking has sended me the wrong motor for my previous esk8.Link to the remote http://www.ebay.com/itm/262779892776

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  • bartroosen commented on JessieV93's instructable DIY Electric Long Board6 months ago
    DIY Electric Long Board

    were did you get the ''double'' trucks from?

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard6 months ago
    Powerful 2000W Electric Longboard

    Hi man do you have fb it's much easier to talk or something else?I get a pretty good range around 14km with 40km topspeed. If you gear for a lower topspeed (30kmh) you will get around 20km it's just a choise if you wanne get faster is lower range ;)For the motor I should suggest another one with a lower kv like the SK3 280Kv or the NTM 270Kv, these are better in terms of torque and power.https://hobbyking.com/en_us/turnigy-aerodrive-sk3-5055-280kv-brushless-outrunner-motor.html?___store=en_ushttps://hobbyking.com/en_us/ntm-prop-drive-50-60-270kv-2400w-1.html

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard6 months ago
    Powerful 2000W Electric Longboard

    Thanks man!I've sold this esk8 and I currently making a new one so instructable coming after a month I guess.There are a few things which I have changed for my new build.First of all the ESC, I have bought a 120A car ESC which is so much smoother in acceleration and wont struggle when braking. it has a program card and has much more options then the 120A boat ESC.The second thing I changed is the charger, I went for a BMS for my 6S2P lipo pack (the same pack with the same cells as I used in this build). This BMS is capable of charging the pack with a current of max 12A so that's fast enough.And the last thing is the remote, I found a very nice compact one on ebay for like 20€ and it's so much better than the big G2TB controller I had before.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard6 months ago
    Powerful 2000W Electric Longboard

    Hi,Don't remove the black circlips but you need to make sure that the circlips can rotate free when the motor turns.If you make a picture of the motor srewed on your motormount, I can tell you if it's right ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard7 months ago
    Powerful 2000W Electric Longboard

    You can directly solder them after you bought them ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    Nowp the balance charger will do this ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    Hi man and Thanks!The range I could get was like 15km.My friend also wanted to make a esk8 so that's why I have everything double ;)

    But now I have sold mine and I'm making a new one with a slightly better ESC and faster charging

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    Hi, you have the esc programcard? just pull the triger in the opposite direction while riding forward and the board will brake.Do you have set the braking ''%'' ? maybe it's on 25% and it is just so weak that you can barely feel it, so you can try putting it on 50%

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    That's really perfect!

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    I don't know another place to buy but I should use this one: https://hobbyking.com/en_us/turnigy-aerodrive-sk3-5055-280kv-brushless-outrunner-motor.htmlHigher torque and topspeed with the same setup will be like 38kmh.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard8 months ago
    Powerful 2000W Electric Longboard

    Yep that's no problem, but think about the max speed which will be like 45kmh, but maybe you want a high topspeed ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard9 months ago
    Powerful 2000W Electric Longboard

    Ja er zijn nog enkele die ongeveer dezelfde specs en prijs hebben en die zelfs beter zijn voeg ma anders toe op facebook -> Bart Roosen

    Er zijn wel een paar dingen die ik zou veranderen maar dan kan ik u misschien beter bereiken via facebook?dan kan ik mijn tips die ik heb wel meedelen met u

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard9 months ago
    Powerful 2000W Electric Longboard

    I use a 12V 5A power supply but you just need power supply of 50W or more and a voltage between 12-16V i guess, but it's in the discription of the lipo charger ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard9 months ago
    Powerful 2000W Electric Longboard

    No problem ;) and yep, that's correct

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard9 months ago
    Powerful 2000W Electric Longboard

    Thanks man!Well I have a picture wich will make clear how to connect the balance cables to a 5S pack, so it will be in the same way as a 6S pack ;)For the links, you need to dissable adblock and then open them, wait 5 seconds and 'skip ad' right above in the corner.

    Yep I need to connect both to charge it

    Thanks!Yes I only used the 320kV motor ;)The other 236kV motor was delivered wrong but is also a very good motor.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Yes you can do that, but you can also change the transmission or use a lower kv motor (my type has 3 versions 236kv, 275kv and 320kv) so the topspeed will be lower and the motor will have more torque so will consume less power ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Thanks man!I will take a look on it!

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Yep underneed the rubber is the balance port of the battery pack, so it is a little bit protected for water.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Hi,I have made a kind of extended cable for the charger so I can plug it more easy into the board.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Hi,Hill climbing is no problem but of course it depends on the steepness of the hill you want to ride.Do you have something easier to conversate like facebook or google hangouts, So I can give you the tips I learned and explain you some small things I should change?

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Hi,I would really like to help you with your project so if you have any questions just ask ;)1. The boat ESC has forward, reverse and braking function which is standard enabled but you can change it with the programming card.2. Well the Kv rating is depending on the speed you want to reach.I will give 2 examples by calculating:- a 320kV motor with 30/15 pulley will give you a speed of 46km/h in theorie- a 236Kv motor with 30/20 pulley will give you also like 46km/h in theorie.They will have the same torque if the speed of the board is the same because you gonna change the transmission.It's true that a lower Kv motor has a higher torque but these motors should be used in airplanes with no transmission.The only option to get more torque is to change the transmission to a lower speed of th...

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    Hi,I would really like to help you with your project so if you have any questions just ask ;)1. The boat ESC has forward, reverse and braking function which is standard enabled but you can change it with the programming card.2. Well the Kv rating is depending on the speed you want to reach.I will give 2 examples by calculating:- a 320kV motor with 30/15 pulley will give you a speed of 46km/h in theorie- a 236Kv motor with 30/20 pulley will give you also like 46km/h in theorie.They will have the same torque if the speed of the board is the same because you gonna change the transmission.It's true that a lower Kv motor has a higher torque but these motors should be used in airplanes with no transmission.The only option to get more torque is to change the transmission to a lower speed of the board like 36km/h for example.Or you can use more cells to get a battery pack like 8S, 10S or 12S to get more power and torque.3. And yep but I have used 6S for the first reason because it's much cheaper, 6S ESC are very cheap like the 120A boat esc and I haven't had problems, the motor is running fine and don't gets really hot. Right now I use like 75% of the motor capacity (1800W and the max of the motor is 2300W) so if you use 10S and calculate 10*3,7*80A will be like 3000W but the motor max will still be 2300W so I guess like 75% I'm using now.4. The battery pack under my board hasn't a BMS but the ESC will stop when a cell of the battery is below 3,2V. The cut off voltage can also be changed with the program card.I'm charging the batteries with a 6S balance charger but you can also use a 6S BMS board and mount it under the board which is more easy to charge it.

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard10 months ago
    Powerful 2000W Electric Longboard

    Thanks man yeah it's so fun to ride!And I'm not going to make a video how I made it because thid instructable already explaines everything?If you have some questions just ask me and I will explain it ?

    The controller is like a rc-car controller so you can also brake with the controller.You can adjust the brake power with the programming card, the brake power is now on 25% so if that's not enough you can easy program it to like 50% or 75% ;)

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  • bartroosen's instructable Powerful 2000W Electric Longboard's weekly stats: 11 months ago
    • Powerful 2000W Electric Longboard
      24,870 views
      413 favorites
      60 comments
  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard11 months ago
    Powerful 2000W Electric Longboard

    Thanks

    Nope just the XT60 connectors to turn it on

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard11 months ago
    Powerful 2000W Electric Longboard

    Hi,I spent like 300€ (320$) for the parts I needed to make my longboard electric.

    No, the longboard is not included so 400€ if you want the total costs

    The exact weight is 6,3kg.Well if you buy the 250W charger it will take only 1 hour to charge.With the 50W charger which I have now it takes 5hours so that's my next upgrade :)

    Because you need to lean left or right on the board to steer.So the truck axle will move while steering.

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  • Portable Bluetooth Speaker 2x3W Finished !

    In my other bluetooth speaker I have used a audio usb so it's explained there already ;)

    Yep they are just rubber wrist bands ;)

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard11 months ago
    Powerful 2000W Electric Longboard

    1 cell is made for 5A charging constant, and I have 2 cells in parallel so that means the pack can be charged at 10A.The charger is also 10A and 250W so it will be max charging at 10A.This should not effect the batteries lifetime.

    Thank you very much!Nice I'm looking to see builds from other people :)I will add a new pictures of the complete schema of the wirings to make everything clear.

    Or this pack is also very good but it's ticker and you can't disassemble it:https://hobbyking.com/en_us/turnigy-5000mah-6s-20c...It's a 6S 5Ah pack so you need 2 of these to get 10Ah

    Thanks man!

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  • bartroosen made the instructable Powerful 2000W Electric Longboard11 months ago
    Powerful 2000W Electric Longboard

    Hi,I should recommand this battery if the single cells are not available:https://hobbyking.com/en_us/multistar-high-capacit...Multistar does not glue their batteries so you can easily disassemble the battery to have the single cells (10Ah) seperately so you can.Here's a link how it looks like when you open the pack:http://www.electric-skateboard.builders/t/how-i-ma...

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  • bartroosen commented on bartroosen's instructable Powerful 2000W Electric Longboard11 months ago
    Powerful 2000W Electric Longboard

    Yes, the esc is made to be cooled by water but you don't need to do that.The esc max amps are like 100A at startup and like 60A when I'm cruisingAnd the esc isn't getting very hot

    If you really want hub motors, I can recommand these:- Dual Hub Motor (130kV 6S)http://diyelectricskateboard.com/diy-electric-skateboard-kits-parts/electric-skateboard-hub-motor-dual/- Single Hub Motor (130kV 6S)http://diyelectricskateboard.com/diy-electric-skateboard-kits-parts/electric-skateboard-hub-motor-single/It's a good brand and you can buy new wheels for the hub motors wheels:http://diyelectricskateboard.com/diy-electric-skateboard-kits-parts/hub-motor-replacement-wheel/The 83mm wheels will go 40km/hThe 90mm wheels will go 45km/hIf you use a single hub I should use the 83mm wheels (it has more torque with 83mm then 90mm)When you want Dual hubs you can choose 83mm or 90mm, will both work fine ;)

    You need to use flux and then it will solder very good

    It's very nice and clean looking with hub motors, but I can't find the ''kV'' rating in the discription on ebay?I guess like 110kV but you need that to calculate your max speed of the board. They are also pretty expensive? (300$)And if they are 110kV you need 8S to go 40km/h.When you use 6S you won't hit 30km/h.ESC's above 6S are much more expensive (like 100$ for an ESC 8-12S)This one has 2 hubmotors so you will need 2 esc's (200$)And then you also need a battery and a controller (150$)Only 650$ for this and believe me you need a lot more like chargers, wires, and stuff so...And what if the wheels are old, can you buy new for hub motors? I don't know :)I like the normal motor setup with pulleys and a belt because you can choose the speed depending on the transmission.

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