BIGVAN3 Posted December 21, 2011 Share Hello Guys I went tubeless about 2 mounts a go. Is there a scale of sum sort where you can seehow meany bar's your tyres need 2 be according 2 your weight? I am heavy... 111kg's.The one guy at the shop i did my conversion said tubeless should not go over 2bar's but another guy at another bike shop said i must run my back tyre at a min of 2bar's cos of my weight. What bar's must my tyres be at? front 1.8bars and back 2bar's? And what is the min and max for tubeless? bike: hard tail 26tyres: Xkings continental trails: WC.. lots of sand and small rocks. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/ Share on other sites More sharing options...
TNOSE_E Posted December 21, 2011 Share If I was you I would def not go under 2bar. I would stick to around 2.2. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1553960 Share on other sites More sharing options...
andretraut Posted December 21, 2011 Share At your weight, I would also go minimum of 2bar at the back. I inflate my tyres 3bar for tarmac training, and 2- 2.5 bar for off road, depending on the terrain. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1553962 Share on other sites More sharing options...
Jakkals. Posted December 21, 2011 Share no wonder my ass is taking strain on 2.5bar, im only 70kg. any recommendation for what i must run my tubeless? Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554021 Share on other sites More sharing options...
_freak_ Posted December 21, 2011 Share I tip the scale at 80Kg and ride 1.6-1.8 bar, works for me... just dont know why anyone would ride tarmac with this MTB... Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554030 Share on other sites More sharing options...
RiderX Posted December 21, 2011 Share The one guy at the shop i did my conversion said tubeless should not go over 2bar's Id like to know which shop it was that said you should not inflate over 2 bar. Personally I never run less than 2 bar, usually 2.3 bar. Only when conditions are exceptionally sandy would I run 2 bar. Running a too low tyre pressure risks damaging the tyre bead especially when going over rocky terrain and/or doing drops etc. Rather get a fatter tyre and run a higher pressure. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554034 Share on other sites More sharing options...
Johan Bornman Posted December 21, 2011 Share Tyre pressure should be terrain dependent. If there is the slightest chance that a rock will cause the rim to bottom out against it, up the pressure. I can see why people want to ride with tyre pressure as low as possible - traction is good then. However, a dented rim could spell the end of your ride or race. With new-tech rims such as Stan's rims that don't have a long sidewall, a dent could spell the end of the rim. Older rims absorb the impact in the sidewall, which can be bent back by a skilled mechanic. Stan's rims absorb the impact directly in the rim cavity. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554035 Share on other sites More sharing options...
Dicky DQ Posted December 21, 2011 Share I am 98kg and still run 1.8-2bar, but it is tricky now as on some seated climbs with dips in them i bottom out. so at 110kg i would say run between 2 and 2.2 bar depending on tire. My rule of thumb is if I bottom out seated on a climb grinding I am probably just under pressure. When going down I am normally out of the saddle so a the legs are also part of the shock system so not much of an issue there. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554036 Share on other sites More sharing options...
Ikonic Posted December 21, 2011 Share I am 85kg and run my rear tubeless tyre between 1.7 - 1.8. Never experienced problems with any damage to the rim. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554040 Share on other sites More sharing options...
_freak_ Posted December 21, 2011 Share terrain is key!! Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554042 Share on other sites More sharing options...
BIGVAN3 Posted December 21, 2011 Share Thanks guys. Going to do koeburg tomorrow. Will run it at 2.2bar. Will see how it dos in the sand and grips on the loses rock. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554098 Share on other sites More sharing options...
BIGVAN3 Posted December 21, 2011 Share Id like to know which shop it was that said you should not inflate over 2 bar. Personally I never run less than 2 bar, usually 2.3 bar. Only when conditions are exceptionally sandy would I run 2 bar. Running a too low tyre pressure risks damaging the tyre bead especially when going over rocky terrain and/or doing drops etc. Rather get a fatter tyre and run a higher pressure.It was a shop here in the cape. don't want 2 name names. Think he may have been one of the young guys that helps out now and then. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554100 Share on other sites More sharing options...
Clinton1 Posted December 21, 2011 Share I tip the scale at 80Kg and ride 1.6-1.8 bar, works for me... just dont know why anyone would ride tarmac with this MTB... Because they don't have two bikes and they wish to get in some distance training that they can't at their local trails? To all: Do these numbers differ dramatically if you are using tubes? Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554102 Share on other sites More sharing options...
Zac.A Posted December 21, 2011 Share no wonder my ass is taking strain on 2.5bar, im only 70kg. any recommendation for what i must run my tubeless? I'm 60kg and ride at 1.2 at the front and 1.5 at the back.Maybe 0.1 more for you, or 0.2...Also depends where you're riding. Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554116 Share on other sites More sharing options...
Tjokkits Posted December 21, 2011 Share have x king protection, fairly new to these tyres (not UST but ride them tubeless) weight eh hem 74kg, had on 2 bar this weekend and although really fantastic on crawling over rocky terrian i felt overall things were a bit bumbpy, will experiment with lower pressures on the next ride Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554118 Share on other sites More sharing options...
NotSoBigBen Posted December 21, 2011 Share I'm 95kg's and old so use old school 'measures' .... 30psi front35psi back Link to comment https://forum.bikehub.co.za/topic/111195-tubeless/#findComment-1554124 Share on other sites More sharing options...
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