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Author Topic: new cranks time then..  (Read 783 times)
_tom_
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new cranks time then..
« on: January 16, 2006, 22:51:53 PM »
No shops will fit me a new helicoil in my old raceface crank arm for some reason, so I'm turning to buying a new crankset. I was gonna get hones but I'm not sure about their external bearings thing, and I'm really heavy so they might not hold up? I was runnning FSA Smack Daddies on my bmx for over 2 years no problems and am currently running them on my mtb with a single front chainring. This would all be fine but I want to switch to 2 or maybe 3 chainrings as I only really ride XC anyway, and they are heavy for XC! I have snapped cheapo flexy cranks before and its not fun so I want something that can stand up to aggressive xc and maybe light street/mini ramp riding. I dunno what to get, theres so much on offer. These seem pretty nice and get good CRC reviews but what do you lot think?

http://www.chainreactioncycles.com/Reviews.aspx?ModelID=7607

The other option would be to get a DMR spider which allows the use of 2 chainrings instead of one which I have now and get a 22mm drill bit for drilling out the spindle hole? What do you think about this?

Cheers!
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Re: new cranks time then..
« Reply #1 on: January 16, 2006, 22:54:16 PM »
middleburns all the way ... on square taper tho .. isis sucks ... youd do well with  hones or xt chainset tho ... dont bother with putting 3 pieces on they suck on anything but bmxes
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_tom_
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Re: new cranks time then..
« Reply #2 on: January 16, 2006, 23:02:28 PM »
I thought square taper was worse for some reason..
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Re: new cranks time then..
« Reply #3 on: January 16, 2006, 23:09:00 PM »
if fitted by hamfisted mechanics then yes square taper is bad ... but ive ridden tapers forever .....

using a middleburn chainset and a raceface taperlock bb with locktited crank bolts and done to the correct torque ...

never had a problem and anyone who knows me will tell you im a harsh rider .... 2 frames in as many months this year ... baws ....

isis has to small a taper on it to provide a good fit there is always some movement in it (to small to feel but its there ) and if you have movement on a spline you have wear on the softer material (crank arm)  plus the bb bearings are toooo small
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Re: new cranks time then..
« Reply #4 on: January 16, 2006, 23:13:03 PM »
Quote from: Sideshow Barbie on January 16, 2006, 23:09:00 PM
if fitted by hamfisted mechanics then yes square taper is bad ... but ive ridden tapers forever .....

using a middleburn chainset and a raceface taperlock bb with locktited crank bolts and done to the correct torque ...

never had a problem and anyone who knows me will tell you im a harsh rider .... 2 frames in as many months this year ... baws ....

isis has to small a taper on it to provide a good fit there is always some movement in it (to small to feel but its there ) and if you have movement on a spline you have wear on the softer material (crank arm)
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_tom_
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Re: new cranks time then..
« Reply #5 on: January 16, 2006, 23:28:45 PM »
ahh ok so square taper, got it. Middleburn are pretty dear but I like how you can customise em on crc! Anything good in the budget end of cranks?
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Re: new cranks time then..
« Reply #6 on: January 16, 2006, 23:30:28 PM »
just go for saint you won't be sorry
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Re: new cranks time then..
« Reply #7 on: January 16, 2006, 23:32:58 PM »
how about a pair of middleburns for 50 quid ? taper lock 113mm bb for 20 ?

pm me if interested ..
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_tom_
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Re: new cranks time then..
« Reply #8 on: January 17, 2006, 13:49:30 PM »
Quote from: Sideshow Barbie on January 16, 2006, 23:32:58 PM
how about a pair of middleburns for 50 quid ? taper lock 113mm bb for 20 ?

pm me if interested ..

PM'ed

The thing is tho, I checked out the Middleburn site and its saying Isis is stronger etc.. I've never seen Isis on cheaper bikes, only square!
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Re: new cranks time then..
« Reply #9 on: January 17, 2006, 14:16:28 PM »
not saying this to sell mine cos i dont think they are what your needing .. mines have the dual spider on so can only take big and middle rings no small

but i believe its all marketing hype .. from the point of view of having seen many more isis cranks die from hard use than good quality tapered cranks .... 

xtype / saint style is the way forward but i do believe that a good quality set of tapered cranks and a good quality bb will outlast a good quality set of isis ... which has been proven in the area where i live when im still on the original set of cranks and bb and everyone i know with isis has been thro lots of race face sigs and gigapipe dhes ... and without a taper play can develope between the cranks and the bb

the tapered weak thing coms from people using s**t componants like fsa power pros and un52/72 bbs which snap ten a penny and the cranks round like there made from stilton !
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_tom_
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Re: new cranks time then..
« Reply #10 on: January 17, 2006, 14:41:59 PM »
Quote from: Sideshow Barbie on January 17, 2006, 14:16:28 PM
not saying this to sell mine cos i dont think they are what your needing .. mines have the dual spider on so can only take big and middle rings no small

but i believe its all marketing hype .. from the point of view of having seen many more isis cranks die from hard use than good quality tapered cranks .... 

xtype / saint style is the way forward but i do believe that a good quality set of tapered cranks and a good quality bb will outlast a good quality set of isis ... which has been proven in the area where i live when im still on the original set of cranks and bb and everyone i know with isis has been thro lots of race face sigs and gigapipe dhes ... and without a taper play can develope between the cranks and the bb

the tapered weak thing coms from people using s**t componants like fsa power pros and un52/72 bbs which snap ten a penny and the cranks round like there made from stilton !

Nah I dont think your middleburns will be what I want then, I need something small (like 22-24t) for my xc, going through muddy fields with a 39t is near impossible!

Any other cranks you can recommend on a budget? Another alternative (and my preferred method if possible) is re-helicoiling my raceface crank arm. How do I determine what type of helicoil thread and size I need?
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Colver
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Re: new cranks time then..
« Reply #11 on: January 17, 2006, 14:43:45 PM »
Quote from: Sideshow Barbie on January 16, 2006, 22:54:16 PM
middleburns all the way ... on square taper tho .. isis sucks ... youd do well with
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Re: new cranks time then..
« Reply #12 on: January 17, 2006, 14:55:36 PM »
which side is it ? if its left hand threaded side be prepred to pay through the nose for it cos those aint common ... plus there may not be enought material for a helicoil due to ribbing or hollow insides perhaps ...
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_tom_
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Re: new cranks time then..
« Reply #13 on: January 17, 2006, 15:12:52 PM »
Quote from: Sideshow Barbie on January 17, 2006, 14:55:36 PM
which side is it ? if its left hand threaded side be prepred to pay through the nose for it cos those aint common ... plus there may not be enought material for a helicoil due to ribbing or hollow insides perhaps ...

Its drive side so regular thread. There is enough room for a helicoil, as it had one fitted before, it just came out when I changed pedals and broke. So at least I know it is possible for one to go in. Just got no idea what I need to get as a replacement!
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_tom_
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Re: new cranks time then..
« Reply #14 on: January 17, 2006, 22:57:40 PM »
no one knows about the helicoils?
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