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Speedy

Rockwheel GT14 - detailed review

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Hi,

Thanks a lot for your review. I just ordered one of these a few days ago, before I read your post, and I'm a complete beginner! Do you think you could post a few more details about your shunting mod and a picture of where you soldered the motherboard?

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Hi,

Thanks a lot for your review. I just ordered one of these a few days ago, before I read your post, and I'm a complete beginner! Do you think you could post a few more details about your shunting mod and a picture of where you soldered the motherboard?

Hi Nekko,

I did not solder anything on the motherboard. What you have to do is to take off the plastic cover on the side of the unicycle to reveal the motherboard and battery. Next, unplug the battery from the main motherboard connector and the charger connector, then remove the battery from the unicycle. Carefully cut through the shrink wrap around the battery. There are 2 layers of shrink-wrap around the battery, cut only one layer at a time. You can patch up the shrink wrap later with scotch tape or similar.

After removing the shrink-wrap, the battery cells and BMS ( battery management board) are protected by some kind of plastic/fibre plates which are taped in place. You only need to remove the plate which covers the exposed side of the BMS. Carefully cut this away, taking care not to short any components.

Now the BMS is revealed, and you will spot that there are a total of 4 big mosfets on the board. The one that is located apart from the other 3 is the over-charge protection, do not worry about that one.

Looking at the BMS, you can see that both the over-charge & under-voltage protection actually has one more empty spot each in which you can solder a transistor. The empty spot on the under-voltage section needs to be shunted the exact same way as the 3 mosfets, like this:

battery.JPG.29dfa0f0ac77d1730aa5df020f8f

Solder a short wire like the red line shows. Make sure each is at least 1.5mm2 gauge...

 

Regarding the app to connect to the wheel, I recommend you use Gotway 3.4.53 which you can download directly to your android phone from HERE

I tried the Rockwheel app which you can download directly HERE, but I could not manage to connect. Please give some feedback if you manage to make it work ;)

 

Edited by Speedy

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Many thanks again for your detailed explanations, much appreciated. I haven't received my Rockwheel yet, and I'll probably hesitate to open it at first, since i won't need to push the wheel for now. I will switch it to soft riding mode through the app for sure though. Will let everybody know how I like the wheel after I've had the chance to practice with it for a while, since I'm still in the throes of waiting for it from Aliexpress... :lol:

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Nice review! Could you post a pic including the ninebot so we can see a size comparission? Thank you.

Edited by Viktiga

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Bottom line, I think it deserves a lot more attention than it has got. Rockwheel got very close on this one, but still so far away :P

This must be a huge problem for them. I mean there is just a handfull of guys that are willing to open up their BRAND NEW expensive EUC. Imagine receiving a broken Iphone or a laptop and then open it up and start fixing it instead of just sending it back:)

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Hi.

Really good review. 

I also have a GT 14 and it is my first unicycle.

I like this a lot. But i cannot compare. I have met the same problems rurning Ith gt14. The pedals are touching the ground if you try to so short turns. 

For the problem of the app, i have the same problem. The app is shuting down every time i try to connect the bluetooth.

I tried the app given by speedy and it works perfectly.

But could you explain to me the differents modes?

 

I am french and my english is not perfect so sorry for the mistakes.

Moreover i have difficulties to understand what soldering i have to do to prevent fall down?

I also have done a little modification  because there is no pas on the side and it hurts mu legs. 

I have found a enpansed plastic pad that i put on the wheel with velcro strip. It allows me to put in and put out if i need to open the unicycle to see the inside.

I think i will soon add a lamp on the front with a battery "power bank " type with 3w usb light. Maybe i will show you once done.

@SpeedyCould you post a picture "before / after" in order to see the difference and to understand what you have done?

Another last question: 

What app are you using to control your speed during riding?

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dont want to bash this review speedy, however i ordered the same unit a few months before he did. Comparing it to a KS800W, MCM4(minus the issues that will be fixed soon), its like day and night.  Heck even the KS500w is way better. Bluetooth connection problems, battery issues, old design. Pedal design is old also, I would recommend someone to spend $250 USD more for a 10x better current model. New riders with no electrical experience will get hurt on this, and this is documented on every case of this model .

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9 minutes ago, 1kw said:

dont want to bash this review speedy, however i ordered the same unit a few months before he did. Comparing it to a KS800W, MCM4(minus the issues that will be fixed soon), its like day and night.  Heck even the KS500w is way better. Bluetooth connection problems, battery issues, old design. Pedal design is old also, I would recommend someone to spend $250 USD more for a 10x better current model. New riders with no electrical experience will get hurt on this, and this is documented on every case of this model .

Which KS model do you have?

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ks800w 640wh and the older ks500w( same 500w motor as rockwheel) couple generics, everything but a msuper really lol

Edited by 1kw

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15 hours ago, 1kw said:

ks800w 640wh and the older ks500w( same 500w motor as rockwheel) couple generics, everything but a msuper really lol

Very nice! Will KS14 500w be sufficient for city/park playing?

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Hi,

Thanks again Speedy for the review. I received my wheel and am very happy with it, although of course I've never owned another model so I can't compare to other brands.
I find the construction very sturdy, and clearly the wheel packs a punch. I can't comment on maneuverability as I can't ride properly yet, lol.

Both apps provided by speedy connect to the wheel. The Gotway app seems to have more options as far as different modes go. Not sure about all the differences between all the different modes.

I asked a friend to solder the battery board for me as per Speedy's advice, but he found out that the board on my wheel is different from Speedy's and we ended up leaving the wheel as it is. Could be it's a new board designed to remedy the previous problems the wheel had?

Anyway, here goes :

 

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IMG_3620.jpg

IMG_3621.jpg

IMG_3623.jpg

IMG_3624.jpg

IMG_36251.jpg

IMG_3625.jpg

Edited by Nekko

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