Testing 2.5mm and 5mm width rubber O rings on MX 2.8 Badlands. 90mm Inside diameter w/video

[Mongoose]

I ordered 3 7/8 x 1/8 or about 98 mm x 3.5 mm, and 90 hardness A couple days ago, but has not shipped yet.
https://www.amazon.com/gp/product/B0051XZ1GE/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

I would have liked to have gone harder but the 90’s weren’t the right size on McMaster. I’m looking forward to what you think of them.

Also I think the OD I wrote down is a lug height too big or something. I may have had the line sitting on a lug and didn’t see it when I took the measurement. This is why I shouldn’t do that kind of thing at midnight ?. I will recheck later tonight.

 

[Goingnorth75]

I would have liked to have gone harder but the 90’s weren’t the right size on McMaster. I’m looking forward to what you think of them.

Also I think the OD I wrote down is a lug height too big or something. I may have had the line sitting on a lug and didn’t see it when I took the measurement. This is why I shouldn’t do that kind of thing at midnight ?. I will recheck later tonight.

I hope harder is not to brittle, I also wanted to stay between 3 & 3.5 mm thick, time will tell. I usually end up going from one extreme to another so 70 is probably perfect......

 

[Mongoose]

Alright the 99mm x 3mm look to be “good” but I would rather have gone with the 2mm or 2.5mm width.

The ID looks like a winner though.

 

[jondilly1974]

Alright the 99mm x 3mm look to be “good” but I would rather have gone with the 2mm or 2.5mm width.

The ID looks like a winner though.

View attachment 67059

View attachment 67060

Are you leaving the braided line on too?

 

[Mongoose]

Are you leaving the braided line on too?

No, I decided not to add it. If this works well I will switch all of mine to o-rings. I had a tire done in 15 seconds, waaay better than 5 minutes a tire ?.

 

[Goingnorth75]

Well 90 hardness has zero stretch..
Crushed wheels, trying to stretch out a bit and will see if it works.

 

[Mongoose]

Well 90 hardness has zero stretch..
Crushed wheels, trying to stretch out a bit and will see if it works.

Ah man, that sucks. Wonder if they can be heated to stretch them?

 

[Warby]

Well 90 hardness has zero stretch..
Crushed wheels, trying to stretch out a bit and will see if it works.

Mine looked like that at first but have stretched a bit and look ok now.

Edit: actually after a closer look at yours they do look very tight.

 

[Goingnorth75]

I stretched them over a 30# dumbbell, got 6 inch snow so I can wait a bit.

 

[Warby]

Now, after running:

 

[Warby]

After more running on gravel this time. 3 of 8 broken orings but still held in by glue.

 

[Goingnorth75]

Ran a couple batteries through mine yesterday in the snow and some grass without gluing and they stayed on, still a little tight but may stretch out more. No flat spots.

 

[Notorious J]

Got a good run through the grass today. Will have to see the video, but ballooning stayed minimal. Happy with the 95 x 2.5 so far and since I plan to run it in grass and dirt only, pretty sure they'll hold up.