noname said:Hi... my advice?... get a set of 170 cranks... 165 are too short.... u'll
get more power and more consistency using 170. !72.5 is way too long for u
specially if u r kind'a short person u know... thats the reason because u
have pain on your knees (not new), ALthoug i can use 172.5 i might suffer
some pain in my knees because of that little difference.
"172.5 is way too long for u", so, " get a set of 170 cranks". Do
you really think that 2.5mm is "way too long"? If the OP is having
knee pain, it is more likely due to the cleat alignment, and/or saddle
position[height, kops]. Here see what Sheldon has to say:
http://www.sheldonbrown.com/pain.html#knees
Pain and cycling, in general: http://www.sheldonbrown.com/pain.html
I have to believe that for all but a true professional bike racer,
changing out cranks for 2.5mm is a waste of time and money. Sure, if
you are replacing your wornout crankset, or building a new bike, then
go to the 170, but don't do it just to change size.
Quoted message said:
Probably u'll feel some performance difference with 165, why? because the
torque is a lot less than with a 172.5 especially in higher gears (hope ur
not one of those riders). If i was u i would get a set of 170 set of
cranks... 165 are too short even for u.(if u are using the same bike ull
feel the difference, maybe with another frame u wont, it depends not all
the bikes are the same set ups)
As experience, books always say something. formulas for this and this and
people from the LBS giving u advice about what is ok and what is not ok.
(some LBS people havent riden even in a tricycle but they had read a lot).
The problem is that rules arent always the same, rules and formulas depends
of many factor and usually they take only an average person.
Fausto coppy style was awefull but the guy was god damm fast... good
example right?
AN extreme case i remember, over here in xxxx a triatlhete woman. She had
the best bike in the market, the guys from the store were trying t get the
best position for her (she wanted the same) blah blah... I saw her last
custom made bicycle... was something hmmm... weird... she was pettite too..
well that day this woman went there to try that new frame (the 4th one), I
saw her on hte parking lot riding and I notice that no matter what frame
they built for her, her style will continue being crappy. I have no idea if
she is still trying to get a position as Greg Lemond but I bet that the
store people didnt say that the problem was her and her shortness to this
poor woman, there was nothing else to do. besides taking her money... or
maybe teach her how to really ride a bike and improve her style (no store
will teach u that)
So, you are saying, because she is short, they can't build a bike to
fit her? That is the whole idea of going custom, to be able to cut the
tubes to nonstandard sizes. If they can't size the bike properly, it
is either their incompetence or her requesting/demanding incorrect
lengths.
Quoted message said:
As a general rule, usually short people have problems with their position
over the bike specially if the style and tecnnique is bad. Dunno if this is
your case... but usually thats what happens.
As a general rule, really tall people have problems with their
position over the bike especially if the style and technique is bad.
This statement is as absurd as yours. If your style and technique is
bad, your height isn't the issue.
Quoted message said:I saw in nashbar i think a set of cranks quite cheap and they look cool
too...
Cya...
PS: numbness in my hands <--- the seat is pointing to the ground, set the
seat level with the ground thats all u have to do, btw maybe you ride
putting all your weight over the front of the bike, and if thats the
case... i thnk we found the source of all your problems.
There are way too many people giving advice, as absolutes. If I have
learned nothing else on these newsgroups, it is that when it comes to
bicyle fit and sizing, there are few absolutes.
Life is Good!
Jeff
