KS16s Tube Size

[Slartibartfast]

Hello, I'm needing to replace the inner tube of my KS16s and am having trouble determining exactly what tube I need. I've kind of been assuming I need a 16-inch tube with a "bent" valve stem but just want to be sure.

Thanks.

[Marty Backe]

21 minutes ago, Slartibartfast said:

Hello, I'm needing to replace the inner tube of my KS16s and am having trouble determining exactly what tube I need. I've kind of been assuming I need a 16-inch tube with a "bent" valve stem but just want to be sure.

Thanks.

Of course it's easiest if you order one from a EUC dealer because then you'll be assured of getting the correct size.

The critical aspect of the "bent" valve stem is that you get one that is bent in the correct direction. You'll discover that the most common bent valve tube has the bend going 90-degrees (perpendicular to the tube). Those won't work because the valve will hit the shell. You need the valve to be bent inline, or parallel to the tube, or close to it.

For example, this is the tube that you would want to get (whether from EWheels or another source): https://www.ewheels.com/product/16-x-1-95-innertube/

[Slartibartfast]

Arr nice, thank you.

I did check the Kingsong site and it had a dropdown list enabling you to select the size you were after but no indication of which size you would actually want. Unfortunately eWheels won't send things to Australia but I'll check some other stores tonight but if all else fails it looks like a 16-inch tube off AliExpress should get me through.

And thanks for the tip about the direction of the bend in the valve stem. I had naively thought one would be able swivel the direction by loosening a nut at the base (I've seen them like this before) but this is clearly something I will need to check. ?

[Rywokast]

these work for kingsong, good for spares though if you are in need of one now may want to get it from amazon for much faster shipping https://www.aliexpress.com/item/Inner-Tube-16-x-2-125-with-a-Bent-Angle-Valve-Stem-fits-many-gas-electric/32753850037.html?spm=2114.search0604.3.108.13821798GKzJ1D&ws_ab_test=searchweb0_0,searchweb201602_5_10065_10068_10130_10547_10059_10884_10548_10887_10696_100031_10084_10083_10103_10618_10139_10307,searchweb201603_16,ppcSwitch_5&algo_expid=7abb47dd-9386-4f22-961b-186f178f26d6-16&algo_pvid=7abb47dd-9386-4f22-961b-186f178f26d6&priceBeautifyAB=0

[The Fat Unicyclist]

I have some tubes sourced directly from King Song, and this is the one for the KS-16S...

 

[Mono]

6 hours ago, Marty Backe said:

The critical aspect of the "bent" valve stem is that you get one that is bent in the correct direction. You'll discover that the most common bent valve tube has the bend going 90-degrees (perpendicular to the tube). Those won't work because the valve will hit the shell.

3 hours ago, Slartibartfast said:

And thanks for the tip about the direction of the bend in the valve stem. I had naively thought one would be able swivel the direction by loosening a nut at the base (I've seen them like this before) but this is clearly something I will need to check. ?

There are two ways/directions to install the tube. The sidewards bent valve hits the shell only if installed turning outward. Chances are 50/50 if one doesn't pay attention.

On the InMotion V8 I found that I can also use standard tubes without any modification (so far I used already three different types of bicycle tubes without a problem). A spacer put over the valve inside the rim may also help to make a standard tube work for other EUCs.