Mountain Biking Association of Dublin



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1
Buy and Sell - Public / Re: Six Six One Evo knee pads, size M, 20
« Last post by ruth:D on 03, December, 2019, 04:22:40 PM »
Hey Ruth, Ill take them for Luke.
Great
2
Buy and Sell - Public / Re: Nestling light, Free
« Last post by ruth:D on 03, December, 2019, 04:22:02 PM »
Gone
3
Buy and Sell - Public / Re: Six Six One Evo knee pads, size M, 20
« Last post by AussieSteve on 03, December, 2019, 01:20:38 PM »
Hey Ruth, Ill take them for Luke.
4
General Discussion - Public Forum / Found a wheel
« Last post by Kieran S on 03, December, 2019, 08:38:54 AM »
Does anyone know anyone that might have lost a 26 inch in Dundrum?
5
Buy and Sell - Public / O'Neal MX Goggles, New in Box, 25
« Last post by ruth:D on 01, December, 2019, 12:32:23 PM »
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Buy and Sell - Public / Nestling light, Free
« Last post by ruth:D on 01, December, 2019, 12:04:43 PM »
I bought this on Amazon a few years ago and have since replaced with better lights. It does work but not sure how long it lasts, should be at least an hour and not sure if reliable but if maybe someone wants to try out a night spin and this could do for a short spin....

Anyone interested before it goes to WEE?

7
Buy and Sell - Public / Six Six One Evo knee pads, size M, 20
« Last post by ruth:D on 01, December, 2019, 11:58:47 AM »
In great condition.
I bought then a couple of years ago but didn't wear much cos they were always too big for me.

Size M
20

This is them: https://www.chainreactioncycles.com/mobile/ie/en/sixsixone-evo-knee-ii/rp-prod141634
8
Buy and Sell - Public / Re: 2018 Rocky Mountain Instinct BC Edition (Large)
« Last post by WeekendWarrior on 29, November, 2019, 02:45:44 PM »
Price dropped!
9
Tech Talk - Public / Re: Tyre pressure??
« Last post by StuntBikeSteve on 11, November, 2019, 12:10:33 PM »
Also missed is the type of terrain you're riding...
Running circa 40psi is probably fine if you're just riding the Coillte trails however, once you venture off those and onto the natural trails you will have to run significantly lower pressures to obtain the level of grip required to even stay on your bike irrespective of any puncture worries..!
Hope this helps..!

10
Tech Talk - Public / Re: Tyre pressure??
« Last post by saccades on 11, November, 2019, 11:24:22 AM »
Something missed so far here on all the advice you have been given is rim width.
 
The wider the rim, the lower the pressure you can go (so long as the tyre you are fitting isnt grossly outside the recommended fit (i.e 19mm can take a 2.35 max) so if you have some old school 19mm rims and weigh ~100kg you might struggle to go lower than 30 psi and keep the tyre on the wheel.
 
 I know starting at 40psi is way too high, back in the day Id run 35psi at ~120kg all up with 2.35s on a 19mm rim, any lower and Id rip the tyre off.
 
Something else to look at is what type of flats are you getting.
 
Thorn/nail = go tubeless (could be the tyre starting to perish too if they are old).
Pinchflat = go tubeless (or add an extra 5psi) , could be riding style too, ploughing through obstacles instead of riding them
Other = check your rim tape, also once tyres are starting to be worn out youll get more flats, could just be perished tyres.
 
The reduction in noticeable punctures is a nice side benefit of tubeless, the main one is the lower tyre pressure required giving you better rolling resistance and more grip when riding.
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