V12

[Suicidl]

V12 just starts taking off when turned on. The screen is not working as well. 

[Nostris]

Could you explain in more detail. Has the wheel recently been dismantled or worked on? 

[alcatraz]

What?

I know this is late but to the OP I have heard about this problem with the wheel taking off. It happens when the motor is installed backwards.

[Freeforester]

21 minutes ago, alcatraz said:

What?

I know this is late but to the OP I have heard about this problem with the wheel taking off. It happens when the motor is installed backwards.

Yep, Chooch even showed folks how to do it on a video, not great for the decor istr!

[mrelwood]

6 hours ago, techyiam said:

If I am not mistaken, the 80/90-12 tire is a bit larger than the 3.00-12 tire.

It of course varies by tire model, but usually 3.00-12 is larger. 80/90-12 is especially noticeably less tall.

3.00-12 vs 80/90-14:

[techyiam]

6 hours ago, mrelwood said:

It of course varies by tire model, but usually 3.00-12 is larger. 80/90-12 is especially noticeably less tall.

3.00-12 vs 80/90-14:

Typo? You meant to type 80/90-12?

Assuming that was a typo, then I may have been mistaken since you are showing a counter-example. In your example, the 3.00-12 is a knobby, whereas the 80/90-12 is a cross-trek/rain tire for pavement.

3" = 76.2mm  <  80mm.  Not sure why a 3.00-12 tire would be wider than a 80/90-12 tire.

I do see that the 3.00-12 tire would have a larger overall tire diameter than a 80/90-12 tire.

In any case, good to know. Thanks.

 

(1) 3.00-12: both the tire section height and tire width is 3" = 76.2mm.

     3" x 2 + 12" = 18" overall diameter. 

(2) 80/90-12: the tire width is 80mm, and the tire section height is 80mm x 90% = 72mm.

      80mm x 90% ÷ 25.4 x 2 + 12 = 17.67" overall diameter 

Interestingly enough, I just measured the width of my 2.75-12 tire. It is 72mm or 2.83". Tire was mounted and inflated. So it's 2 mm over the rated width.

Edited June 27, 2023 by techyiam

[Funky]

34 minutes ago, techyiam said:

Typo? You meant to type 80/90-12?

Assuming that was a typo, then I may have been mistaken since you are showing a counter-example. In your example, the 3.00-12 is a knobby, whereas the 80/90-12 is a cross-trek/rain tire for pavement.

3" = 76.2mm  <  80mm.

In any case, good to know. Thanks.

 

 

He was just giving example.. The 80/90 tire in picture is K66, which are not been made in 12".

Edited June 26, 2023 by Funky

[mrelwood]

2 hours ago, techyiam said:

Typo? You meant to type 80/90-12?

No, it was just to compare the tire widths. Those were the only relevant examples I had.

2 hours ago, techyiam said:

3" = 76.2mm  <  80mm.  Not sure why a 3.00-12 tire would be wider than a 80/90-12 tire.

In the motorcycle world it seems that more than the actual precise measures, the size classifications represent certain size groups and styles. Just like a 16” EUC can have a specified tire width from 1.95” all the way to 3”, affecting the actual outer diameter by quite a bit. And some 2.75-14” tires fit the V11, and some not even close (SR244).

2 hours ago, techyiam said:

(2) 80/90-12: the tire section height is 80mm, and the tire width is 80mm x 90% = 72mm.

      80mm x 90% ÷ 25.4 x 2 + 12 = 17.67" overall diameter 

Now that’s an actual typo!  You switched the “width” and “height” around. But your calculation is correct!

2 hours ago, techyiam said:

Interestingly enough, I just measured the width of my 2.75-12 tire. It is 72mm or 2.83". Tire was mounted and inflated. So it's 2 mm over the rated width.

And most 16x3” and 18x3” tires are around 2.7” wide… Btw the rim width also affects the installed tire width (and outer diameter).