phatboytwo
Dirt Disciple
Just for info These stronglight cranks with BB and 42T ring are lighter than the Tune sixpack cranks+Royce BB+42 ring by 45g
Stronglight chainset
- Thread starter phatboytwo
- Start date
phatboytwo
Dirt Disciple
sorry got that abit wrong Royce BB with the stronglight ,sixpack Ti bb with the Tune
non-fixie
Senior Retro Guru
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somewhat dependent upon which side o' ye olde puddle one calls their place o' abidementation
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The grass is always greener (or more French-threaded) on the other side of the puddle.
bikeworkshop
Old School Grand Master
It's a beautiful, simple chainset, but...Stronglight 49D. Low Q-factor, low weight, small BCD. What's not to like?
Small bcd means bent rings - I've seen these stronglight and ta bcd rings folded almost in half many times.
And with many front derailleurs, the rh arm clacks on the cage in top - (specially index compatible with its own design requirements)
bikeworkshop
Old School Grand Master
... so that's light, Yes, strong, No
non-fixie
Senior Retro Guru
I have quite a few '5 vis' chainsets om my bikes and never experienced any flexing, let alone bending of chain rings, but maybe I'm just not strong enough.
And yes, the low Q factor comes at the expense of having to use a front derailleur with a flat outer cage plate. Which is one reason why I like early Campagnolo Ergo shifters for 'modern' shifting.
bulgie
Dirt Disciple
I have quite a few '5 vis' chainsets om my bikes and never experienced any flexing, let alone bending of chain rings, but maybe I'm just not strong enough.
And yes, the low Q factor comes at the expense of having to use a front derailleur with a flat outer cage plate. Which is one reason why I like early Campagnolo Ergo shifters for 'modern' shifting.
Yes, 5-vis rings have been strong enough for countless Clydesdales on MTBs, not to mention tandems.
I used to compete in Observed Trials, and would bash my TA 5-vis rings on rocks and logs pretty often, usually only bent one or a few teeth, which I could straighten on the spot with a 4" long adjustable wrench. Sometimes (or maybe usually? I forget), the bent tooth would break off instead of straightening, but then the ring kept working, as near to perfectly as I could tell. Yes I went through a couple rings that way, but that's the name of the game in Trials whatever brand of cranks you run, unless you have a dedicated bashguard, the kind that attaches to the frame and can take real impacts. I never bothered with one of those, since I sometimes used my big chainring teeth to help me get over a log. That was back in the '80s, and my Trials bike was more of a "mountain/Trials" than pure trialsin. I used it as a general-purpose MTB also. So it had a front derailer and a double, with the small ring used for Trials, teeth of the big ring exposed. Fun times!
bikeworkshop
Old School Grand Master
It's the 52s that fold generally, and it could easily be cheap aftermarket rings which you probably can't get nowdays.
And I'm looking at a sample size of hundreds, where a few have folded - i remember one bike the bent ring had actually cut through the chainstay!
And I'm looking at a sample size of hundreds, where a few have folded - i remember one bike the bent ring had actually cut through the chainstay!
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