hey all i did an install review here http://www.thumperta...install-review/
This will be my riding review
so this weekend I did a 2 day ride in northern Ontario.
the trails were everything from dry dusty beach sand to wet beach sand to rocky and roots, muddy and wet rocks to top soil and even some pavement
the ride was round 140 km on day one and 90km on the second.
on the first day I checked all four pressures and I found the low tire pressures was right were I left them a couple days before when installing them
front was 12.5 psi and rear was 10 psi
the tubliss high pressure was down. although jeff from tubliss told me this will happen via permeation . we spoke about using nitrogen instead of normal compressed air and jeff said in his extensive testing nitrogen was slower in losing air to permeation but does not completely stop it.
another thing to remember is that each time you check the pressure the tubliss losses air as you can hear the air rush out as it is under high pressure but low volume of air.
I was finding that I would lose about 5 psi each time I checked the pressure.
jeff was telling me that he runs his tubliss at 125 psi that way once he checks the pressure it will naturally drop to 100-115 range. he said that during his testing they tested the tubliss to 200 psi although 100 was the sweet spot so that's what they suggest in the instructions.
I ran with 110 psi front and back.
I found that the tubliss system was pretty much invisible, meaning I did not know any different from normal tubes. that being said I was at 12.5 psi in the front tire and 10 psi in the rear. which is what i ran with standard duty tubes
next I lowered the pressures to 10psi in the front and 8 psi in the rear. I started to notice a difference in traction. and also I noticed that in rocks/gravel about half the size of my fist I did not even feel. I also noticed that I was more stable when I pull a wheelie. I believe that this is to the fact that the tire with all the weight of the bike and me that the tire contact patch is more "square" instead of arched. it felt like the bike did not want to fall to the right or left as easy as when I was at higher pressures, while standing it up at 20 km/per hour
on the second day I lowered pressures to 8 psi in the front and 6 psi in the rear. and I found it was the same increase in traction again. but even pounding through the rocks I was not "pinging" in to the rim like with normal tubes.
to be honest at one of the gas stops on the second day I raised the pressures to 10 psi in the front and 8 psi in the rear. as the ride went from 60 km/per hour to first gear rock crawling and I found that this was the sweet spot for me and my riding. if I was as only doing low speed single track or cross training on logs and rocks then I will lower the pressures to maybe round 5 psi front and back. and maybe even lower
the tires I installed with the tubliss were the motoz tractationator S/T and I found that all of the different terrains from sand to rock to pavement I did not have any issues with stability or rolling of the sidewalls or traction.
I couple times on old gravel back roads i was doing round 80 km per hour and the tires/tubliss felt pretty balanced. no vibrations or any thing weird.
over all i am very happy with my purchase. i will say the install was different and took me 2 tries to get it right but over all i am smiling when i tell all my riding buddies about tubliss and how much i love the improvement in traction and rim protection and also not having to carry spare tubes and tire spoons.
tubliss is truly "bliss"