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Marty Backe

My 84-volt Nikola Triumphs, Tribulations, and Failures

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5 hours ago, Unventor said:

Ohh I forgot you had other wheels to ride, almost :ph34r::P

Those could have been good time too to test the KS16X :whistling:

:roflmao:

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7 hours ago, Marty Backe said:

It's no fair that your odometer is spinning and mine is stuck at 100-miles :furious:

If you come to the ride Sunday I’d let you take it for a spin as long as you promise to not burn up my MOSFETs. 😁

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So is Jason going to accept returns of the $2000 time bomb?  I feel sorry for him, but surely people can't feel confident in this wheel.

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1 hour ago, Jim Martin said:

So is Jason going to accept returns of the $2000 time bomb?  I feel sorry for him, but surely people can't feel confident in this wheel.

+1 for no confident here

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21 minutes ago, Han Vo said:

+1 for no confident here

It might be a Chinese retaliation to you Americans and only your wheels are tainted. :P

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Today I checked out Ali and can now see that the Nikola is available in black or white according to :

https://www.aliexpress.com/store/product/GotWay-new-unicycle-84V-Nikola-17-inch-electric-unicycle-2000W-motor-1600wh-big-battery/3896031_32966472876.html?spm=2114.12010612.8148356.13.3c861baeH6OPHi

With the white being the white we know and the black looking like the plus.

I don't even know who I am anymore at this point.

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9 minutes ago, Mike Sacristan said:

Today I checked out Ali and can now see that the Nikola is available in black or white according to :

https://www.aliexpress.com/store/product/GotWay-new-unicycle-84V-Nikola-17-inch-electric-unicycle-2000W-motor-1600wh-big-battery/3896031_32966472876.html?spm=2114.12010612.8148356.13.3c861baeH6OPHi

With the white being the white we know and the black looking like the plus.

I don't even know who I am anymore at this point.

ooooh~ they sell Nikola without battery :shock2:

@Marty Backe can I use ACM2 battery in 84v Nikola? Are the battery and connector the same??

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1 hour ago, Harold Farrenkopf said:

It might be a Chinese retaliation to you Americans and only your wheels are tainted. :P

Haha, probably so, they are trying to extinguish us Americans one face plant at a time.... We're doomed, time to open my own american made EUC company

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12 minutes ago, Kens said:

ooooh~ they sell Nikola without battery :shock2:

@Marty Backe can I use ACM2 battery in 84v Nikola? Are the battery and connector the same??

I really don't know. I haven't looked closely at the battery configuration on my Nikola.

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I really hope this is isolated and not effecting all of them. 

I think I assumed the boards came from a supplier assembled ready to be hooked up and that supplier knows what they are doing. 

This seems like non electrical minded folks are just slapping them together and if it powers on QC is passed. 

The addiction level of this hobby makes us want the new gen wheels but it would seem smarter to wait for a long time before pulling the trigger. 

Buying an MSX now makes perfect sense as its proven to be one of the most reliable wheels ever made. Problem is "new shinny itis" has me wanting a nicola or 16x. 

I'm sure the "plus" with the 247s will be bullet proof but that price jump is a little steep in my opinion. 

I'm crossing my fingers and toes that Marty's will conquer over heat hill once its its fixed and the other wheels in the wild are fine.....but in light of the hot glue discovery and the way assembling works, makes it unlikely that only one board had hot glue used. 

Huge thank you to Marty for putting himself, and his wallet on the line to stress these wheels to the max!

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32 minutes ago, Flying W said:

I really hope this is isolated and not effecting all of them. 

I think I assumed the boards came from a supplier assembled ready to be hooked up and that supplier knows what they are doing. 

This seems like non electrical minded folks are just slapping them together and if it powers on QC is passed. 

The addiction level of this hobby makes us want the new gen wheels but it would seem smarter to wait for a long time before pulling the trigger. 

Buying an MSX now makes perfect sense as its proven to be one of the most reliable wheels ever made. Problem is "new shinny itis" has me wanting a nicola or 16x. 

I'm sure the "plus" with the 247s will be bullet proof but that price jump is a little steep in my opinion. 

I'm crossing my fingers and toes that Marty's will conquer over heat hill once its its fixed and the other wheels in the wild are fine.....but in light of the hot glue discovery and the way assembling works, makes it unlikely that only one board had hot glue used. 

Huge thank you to Marty for putting himself, and his wallet on the line to stress these wheels to the max!

Thanks.

I have to be honest that I'm not sure when I'll try overheat hill again with the Nikola. I'd like to enjoy riding this wheel during the summer. It could be mid July or later before I get mine back. If it fails again there goes my summer. Maybe I'm done with the Nikola. I'm in a holding pattern with no info about what's going on. I just saw another video by Lin (owner of Gotway) where he's on a long journey to Tibet. So who knows if the lights are on at Gotway right now :confused1:

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7 minutes ago, Marty Backe said:

Thanks.

I have to be honest that I'm not sure when I'll try overheat hill again with the Nikola. I'd like to enjoy riding this wheel during the summer. It could be mid July or later before I get mine back. If it fails again there goes my summer. Maybe I'm done with the Nikola. I'm in a holding pattern with no info about what's going on. I just saw another video by Lin (owner of Gotway) where he's on a long journey to Tibet. So who knows if the lights are on at Gotway right now :confused1:

Is that the rider going through water with it?

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2 hours ago, Kens said:

ooooh~ they sell Nikola without battery :shock2:

@Marty Backe can I use ACM2 battery in 84v Nikola? Are the battery and connector the same??

yes, same as v3s+ and monster as well

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5 hours ago, Jim Martin said:

So is Jason going to accept returns of the $2000 time bomb?  I feel sorry for him, but surely people can't feel confident in this wheel.

one isolated incident proves a QC oversight, nothing more.. if there were reports left and right of this happening, or if say this was confirmed to be an issue by gotway, or you cracked yours open and saw the same issue then I'm sure yes but as of now this is an isolated incident.. I ordered the nikola 2100 a week ago when I get it I'm going to be opening it up to have a look

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5 minutes ago, Rywokast said:

one isolated incident proves a QC oversight, nothing more.. if there were reports left and right of this happening, or if say this was confirmed to be an issue by gotway, or you cracked yours open and saw the same issue then I'm sure yes but as of now this is an isolated incident.. I ordered the nikola 2100 a week ago when I get it I'm going to be opening it up to have a look

I don't think I'd feel confident riding up the hills where i live knowing in the back of my mind i might be hitting the floor because the mosfets burnt out , if marty didn't find this out it could of been okay worse depending where you ride

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15 hours ago, Marty Backe said:

But if my theory holds, seems to me that every Gotway wheel that has an inner row of MOSFETs (not just the Nikola) is a time-bomb waiting to blow. Now I think the other wheels (MSX, Monster, etc) are using the bigger MOSFETs and the hot-glue thermal barrier might not be an issue for those. But when they switched to the smaller MOSFETs, the assembly process became the weak link. 

 

5 hours ago, Jim Martin said:

So is Jason going to accept returns of the $2000 time bomb?  I feel sorry for him, but surely people can't feel confident in this wheel.

 

3 hours ago, Han Vo said:

+1 for no confident here

Plausible theory regarding the bigger MOSFETs saving the other wheels from assembly issues manifesting Marty, and justified reactions from you others - Gotway screwed up here, such a shame following the MSX slam dunk last year (in competition with the other manufacturers with regards to issues reported for the flagships). Remains to be seen how widespread an issue this is for other Nikola owners though. Since I've personally put my Nikola through the paces with my own climbing load test I feel that I'm as confident as I can be for any unicycle with regards to my own wheel and that it will handle the load I'll put on it. Comparing my V10F and Nikola experiences with Marty's suggests my V10F is either worse than the V10F Marty tested, or my Nikola is better than Marty's was.  I personally believe it's the latter.

Regardless, that helps me, but does not help anyone else. It could mean I was one of the few lucky ones with the Nikola, or instead that Marty was one of the few unlucky ones, or that it's 50/50 or whatever. We haven't heard of any other reports as of yet with burned MOSFETs however, but then explicitly pushing the wheels under these conditions are not common either, and perhaps the same error would cause issues for riders with more normal riding patterns in the long run.

Only time will tell, and of course this causes a lot of uncertainty and doubt.

In an ideal world I'd like to see Gotway rush a new motherboard/wheel to Marty for immediate retesting (and it'd make sense in term of damage control you'd think), alas Gotway doesn't seem to really care much about these things.

 

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14 minutes ago, Rywokast said:

one isolated incident proves a QC oversight, nothing more.. if there were reports left and right of this happening, or if say this was confirmed to be an issue by gotway, or you cracked yours open and saw the same issue then I'm sure yes but as of now this is an isolated incident.. I ordered the nikola 2100 a week ago when I get it I'm going to be opening it up to have a look

Unfortunately you will discover that it's impossible to inspect the middle row of MOSFETs without de-constructing the control board assembly. And then you may need to buy replacement thermal transfer sheets to reassemble it.

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10 minutes ago, stephen said:

I don't think I'd feel confident riding up the hills where i live knowing in the back of my mind i might be hitting the floor because the mosfets burnt out , if marty didn't find this out it could of been okay worse depending where you ride

just do it and if you her the incessant beeping heard in martys video STOP lol.. and at that point you should probably inspect your wheel

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Posted (edited)
5 minutes ago, Marty Backe said:

Unfortunately you will discover that it's impossible to inspect the middle row of MOSFETs without de-constructing the control board assembly. And then you may need to buy replacement thermal transfer sheets to reassemble it.

I would be fine with that, already have sheets laying around anyways.. I didn't pay 2200 for something that's going to conk out on me :p

Edited by Rywokast

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11 minutes ago, meepmeepmayer said:

If it is really glue (looks like it), I wouldn't buy a Nikola now, at least from Ali or any other source without excellent service. Because then all boards might be affected and it is no isolated incident, just the first.

With the uncertainty if they will use a better board in future 84V Nikolas I wouldn't buy a Nikola now, too.

2 good reasons to wait. Frustrating, but the reasonable thing to do. I'm certainly waiting until more info comes up.

Though I certainly appreciate any involuntary beta testers ordering the 2100Wh one and giving us a look (if only at the crash and subsequent service odyssey:D).

I have the 84v 1600 Nikola from Jason now, and about 3 weeks ago ordered the 100v 1845 from Ali.  I guess you can say I took a major risk, oh well, gotta roll with it.

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Posted (edited)
14 minutes ago, Jim Martin said:

I have the 84v 1600 Nikola from Jason now, and about 3 weeks ago ordered the 100v 1845 from Ali.  I guess you can say I took a major risk, oh well, gotta roll with it.

You're be covered by EWheels if this is a bigger issue. With Ali you're probably screwed :unsure: I'm exaggerating a bit of course. Worst case you'll have to get a new control board, but dealing directly with China for this will probably not be fun experience.

One upside to all of this is the Nikola is an amazing riding wheel. It would really suck if we had to deal with these inconveniences for a mediocre wheel.

Edited by Marty Backe

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