King Song S18 Discussion

[mrelwood]

 

5 hours ago, Purplecycle said:

 when I pull the wheel upwards and the suspension ‘opens’ completely,

If you have to pull the wheel for the suspension to open up completely, the mechanism has way too much friction. The air pressure in the shock should easily push the wheel to the extreme upright position.

14 minutes ago, Jon Stern said:

What about people who prefer Pepsi? Or those like me who don't drink soda at all?

While I clearly see the humor and embarrassment in having Coke cans as an official means of repair in a new $2000 wheel, look at it this way: If there were a set of suitable spacers available at Walmart for $11.99 which you only needed to trim a bit, would you consider it being a reasonable deal? Or would you rather buy a $.49 can of soda, pour it in the sink, and cut the required spacers from the empty can?

Edited September 14, 2020 by mrelwood

[Jon Stern]

1 minute ago, mrelwood said:

While I clearly see the humor and embarrassment in having coke cans as an official means of repair in a new $2000 wheel, look at it this way: If there were a set of suitable spacers available at Walmart for $11.99 which you only needed to trim a bit, would you consider it being a reasonable deal? Or would you rather buy a $.49 can of soda, pour it in the sink, and cut the required spacers from the empty can?

I don't shop at Walmart. I'd probably find something that worked "as-is" from McMaster-Carr.

I'd also be annoyed at having to do any of this on a $2,000 purchase, and would probably swear never to be an early adopter again.

[evX_Mick]

1 minute ago, Jon Stern said:

I don't shop at Walmart. I'd probably find something that worked "as-is" from McMaster-Carr.

I'd also be annoyed at having to do any of this on a $2,000 purchase, and would probably swear never to be an early adopter again.

McMaster FTW

[Stillhart]

34 minutes ago, Jack King Song said:

The point being is that you have to add shims to above the axel. Coke cans are easily accessible 

Your use of the word "you" here concerns me.

[Jon Stern]

42 minutes ago, Jack King Song said:

The point being is that you have to add shims to above the axel. Coke cans are easily accessible 

What about Wong Lo Kat cans. Do they work?

Edited September 14, 2020 by Jon Stern

[Electric Dreams]

41 minutes ago, Jon Stern said:

What about people who prefer Pepsi? Or those like me who don't drink soda at all?

 any metal shim is fine. 
If you dont like soda then they offer juice in cans too  

[mrelwood]

1 hour ago, Stillhart said:

Your use of the word "you" here concerns me.

If this is indeed what the user must do, maybe KS could offer free sodas to the workers, and add empty used cans in the shipping box? Preferably rinsed after use.

 And to cut down the install time in half, ship the wheel disassembled. User assembled S18s might even have gotten better reviews.

[Seba]

7 hours ago, eve said:

@Seba Is it safe to leave batteries detached from my S18. Right now its disassembled. I charged them to around 60%-70% before disassembly.

Sure, you can even store them for weeks without any harm. Just for sure it's best to check voltage of both packs before reconnecting to verify that both are at the same voltages.

[redfoxdude]

3 hours ago, mrelwood said:

If you have to pull the wheel for the suspension to open up completely, the mechanism has way too much friction. The air pressure in the shock should easily push the wheel to the extreme upright position.

I might be nitpicking, but wouldn't pressure in the negative chamber actually oppose full extension? The shock would want to naturally settle where both chambers are in equilibrium, which may not be the full upright position, depending on the chamber pressure settings.

Still, you shouldn't have to pull very hard to get it to full extension, and I know on mine, I can pretty easily compress/actuate the suspension with just one foot, without my full weight on the pedal.

Edited September 14, 2020 by redfoxdude

[Planemo]

1 hour ago, redfoxdude said:

I might be nitpicking, but wouldn't pressure in the negative chamber actually oppose full extension?

True, which is why dual chamber air shocks usually use less (or the same) negative as positive. The negative is only there to provide small bump compliance (to assist the initial movement of the shock due to internal friction) and to help provide a more linear curve, like a spring would.

[Beachboy]

21 hours ago, Purplecycle said:

Below is the pic

That was in no load position, i dont see any problem with it since when under load/pressed the shock should be away from that protuberance even when you jumping around. 
Btw is your suspension arms plays freely? Whats your shock air chambers pressure?

Edited September 14, 2020 by Beachboy

[RockyTop]

Just for the record, million dollar motors are sometimes shimmed with Coke cans. They seem to last just as long as stock shims. 

1st Tech-  We need about 0.020” more. 
2nd Tech- How many Coke cans is that? 
1st Tech - just use the 0.020 stock shim. 
2nd Tech- we are out. 
1st Tech   Sigh ...... two Coke cans...... 

[Beachboy]

20 hours ago, Jack King Song said:

 any metal shim is fine. 
If you dont like soda then they offer juice in cans too  

@Jack King Song
Yo man, make us a tutorial vids will ya..

also I would like to stress out that all of your bolts sucks, and then I cannot find replacement for the suspension bushings..dont tell me I’ll have to make it out of coke can too..

 

 

Albeit those problems your company gave us, I STILL ❤️ S18, I said that coz i dont want you guys to lock my wheel 🤣🤣🤣🤣🤣

Edited September 14, 2020 by Beachboy

[eve]

I asked my dealer for a new fender because this doesnt seem like a misaligned tyre. I even measured the distance to suspension rods and all 4 are the same distance. 

What do you think @Jack King Song? 

The rubbing keeps me up at night. 

Thx @Seba Do i need to buy a device for volt measurements? Is it expensive? Maybe i can go ask an electrician or some store to check them. 

[redfoxdude]

2 hours ago, eve said:

I asked my dealer for a new fender because this doesnt seem like a misaligned tyre. I even measured the distance to suspension rods and all 4 are the same distance.

It could be that the sliders aren't sitting at the same level. If one is slightly lower on one side, then it contorts the fender a bit, which can cause tire rubbing. Mine came with a shim on top of the motor-wire side, and when I was putting mine back together, I found that omitting it did cause the fender to get closer on that side, even though the motor was sitting centered between the rods. From your photo, it looks like it could use a shim on the side that's on the left of the photo.

Needing a shim is definitely annoying, and King Song should improve their tolerances on their motors/mounts, but it's too bad that not everyone's S18 is arriving properly shimmed 🙁

Edited September 14, 2020 by redfoxdude

[Christophe Maziere]

I've just received my precious S18. What is your tyre pressure? I weight 68 kg (150 lbs) Thanks

[onizukagto]

9 hours ago, eve said:

I asked my dealer for a new fender because this doesnt seem like a misaligned tyre. I even measured the distance to suspension rods and all 4 are the same distance. 

 

The rubbing keeps me up at night. 

 

Just tell her to stop but with a stern voice. 

That's what i tell my missus when it's a school night and i need my sleep. works..... most of the time. 

[redfoxdude]

I've had fun putting this video together. Data nerds rejoice 😂

Some folks say that a big wheel is basically like suspension, and I put that to the test.

[Seba]

10 hours ago, eve said:

Thx @Seba Do i need to buy a device for volt measurements? Is it expensive? Maybe i can go ask an electrician or some store to check them. 

When owning any EUC it's best to have some tools for checking and maintenance. Decent multimeter is such a universal tool, as you can use it to check/verify many things. You can get one for less than 100$, but keep away from cheapest models. It's best to look for models with at least 4 full digits and voltage measurement error of no more than 0.5 %. Good models are Axiomet AX-585B, GW Instek GDM-452 or UNI-T UT56. They are not autoranging (so you have to manually select measurement range), but they are cheap and good. Of course you can buy more expensive model.

With multimeter you can easily check following things (this is not an exhaustive list):

• check charger output voltage to check if it's working correctly
• check battery voltage or measure individual cells when troubleshooting battery problems
• check for wire or circuit continuity, button correct operation etc.
• check for short circuits
• check motor coils resistance
• verify charging current

...and lot more.

Edited September 15, 2020 by Seba

[390f758c-6420-4afb-8066-fd]

hi all

I've never step foot on an electric unicycle, but I have a booster Rev and xiaomi electric scooters so not complete noob at rideables

Do you believe S18 is good or bad purchase for a beginner to EUCs? This is assuming an S18 without any defect/QC issues

thanks!

[Beachboy]

1 hour ago, redfoxdude said:

I've had fun putting this video together. Data nerds rejoice 😂

Some folks say that a big wheel is basically like suspension, and I put that to the test.

Nice video..👍👍👍

 

21 minutes ago, 390f758c-6420-4afb-8066-fd said:

hi all

I've never step foot on an electric unicycle, but I have a booster Rev and xiaomi electric scooters so not complete noob at rideables

Do you believe S18 is good or bad purchase for a beginner to EUCs? This is assuming an S18 without any defect/QC issues

thanks!

If no trouble with money then go for it..altho would be safer to learn with slower wheel like KS14D IMO

[Electric Dreams]

15 hours ago, Beachboy said:

@Jack King Song
Yo man, make us a tutorial vids will ya..

also I would like to stress out that all of your bolts sucks, and then I cannot find replacement for the suspension bushings..dont tell me I’ll have to make it out of coke can too..

 

 

Albeit those problems your company gave us, I STILL ❤️ S18, I said that coz i dont want you guys to lock my wheel 🤣🤣🤣🤣🤣

Locking your wheel anyway  jk ofcourse
 

If you are speaking of the suspension spacers, changing from spring spacers to normal ones. The video has already been made, however it needs upper level management for it to be approved. 

Edited September 15, 2020 by Jack King Song

[FinRider]

2 hours ago, redfoxdude said:

I've had fun putting this video together. Data nerds rejoice 😂

Some folks say that a big wheel is basically like suspension, and I put that to the test.

This video brings up the MOST IMPORTANT aspect of having a suspension wheel, be it the V11 or the S18. Suspension DRAMATICALLY increases safety.

However, as has been stated before, it does induce a less "safe" riding style bc you adopt to the suspension and this brings with it less need for knee-suspension. A small thing to keep in mind if you hop from a suspended wheel to a non-suspended wheel.

[Electric Dreams]

12 hours ago, eve said:

I asked my dealer for a new fender because this doesnt seem like a misaligned tyre. I even measured the distance to suspension rods and all 4 are the same distance. 

What do you think @Jack King Song? 

The rubbing keeps me up at night. 

Thx @Seba Do i need to buy a device for volt measurements? Is it expensive? Maybe i can go ask an electrician or some store to check them. 

Sorry you are experiencing this, a quick fix currently is to place a shim on top of the axel on the side that the wheel is leaning towards, so on the right in the case of this wheel. 

[FinRider]

2 minutes ago, Jack King Song said:

Sorry you are experiencing this, a quick fix currently is to place a shim on top of the axel on the side that the wheel is leaning towards, so on the right in the case of this wheel. 

I have a similar issue with mine and I will be shimming it when I tear down the wheel to put in thrust bearings / nylon shims for the suspension.

I am looking forward to your video about this @Jack King Song --> If it can not be fixed easily, then I may return my wheel as defective.

I really feel that KS needs to step up the game and:

a) admit and identify the deficiencies with the early batch wheels

b) issue a "parts kit" to all early batch owners (or their dealers) and have them sent out free of charge in order to fix these deficiencies