> Y’all should have gotten DM unicycles with the DM splined hub. No
> squeaking with that hub. Just rock solid quiet riding.
Me too. I wasn’t aware of a squeaking issue before this.
JF
From the descriptions by Jeff and Chris it is clear how cotterless and
cottered connections are tightened. Not so for splined. Are the ridges
(splines?) tapered on hub or crank (or both), or are they straight but
then so accurately machined to fit that there is no play at all?
Klaas Bil
On 11 Jun 2001 14:14:49 -0700, danger_uni@yahoo.com (Kris Holm) wrote:
>Hi,
>
>Cotterless and Splined cranks are the worst and best types of axle/crank
>arm connections, respectively.
>
>The below description of cottered cranks is good; I’ll expand on the
>splined description:
>
>Basically a splined axle has ridges ground into the axle that exactly fit
>into notches cut into the hole in the crank arm. When you slide the crank
>arm onto the axle the ridges and knotches fit into each other and prevent
>the crank arm from turning on the axle. You can have from 6 to 48
>knotches, or “splines” on an axle, depending on the brand.
>
>This technology is used in many areas of industry for connections that
>receive high torque. It is much stronger than a 4-square taper axle and
>does not have a tendency to work loose, which is why it is the best
>system for unicycle axles. Unfortunately it is much more expensive.
>
>-Kris. — Jeff Lutkus <lutkus@unicyclist.com> wrote:
>> These are ways that crank arms attach to hubs. My description is
>> probably not substantial enough to explain what these are if you have
>> not seen them already. If you’re still interested, ask someone at a
>> bike shop.
>>
>> Most unicycles (and bicycles) these days used cotterless connections.
>> The crank arm has a square hole. The hub is almost rectangular in shape
>> (it’s tapered so as you press the crank arms in farther, the fit is
>> tighter.)
>>
>> Cottered is the older technology (used in the schwinn I bought on
>> e-bay) and uses a circular hole in the crank arm, rather than square.
>> The hub is cylindrical, with a flat notch cut out of the side. A cotter
>> pin is like a bolt – threaded on one side, so you can attach a nut to
>> it, but more triangular on the other side. The cotter pin goes through
>> another hole in the crank arm, and goes against the notch in the hub.
>> The wedge nature of the cotter pin allows you to get a tight fit.
>>
>> I know very little about splined crank arms and hubs, except that they
>> are supposed to be able to take the most abuse without deforming. I get
>> the impression they are closer related to the cotterless setup, but
>> will not describe further, as I’ve never examined one.
>>
>> Jeff Lutkus jack of all trades, master of none
>>
>> — Trevor Coultart <coultart.remove.this@mac.com>
>> > wrote: A couple of words keep cropping up here which I don’t
>> > understand, (I know, I could just use a dictionary, but I guess I’m
>> > after meanings in the appropriate context!)
>> >
>> >They are:
>> >
>> >-“Cottered”
>> >
>> >-“Splined”.
>> >
>> >–
>> >Trevor Coultart (Anecdotal and/or amusing quotation currently
>> >unavailable)
>>
>> _____________________________________________________________
>> Free e-Mail and Webspace - http://Unicyclist.com
>
>
>__________________________________________________
>Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only
>$35 a year! http://personal.mail.yahoo.com/
–
“To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:” “Mossad, Dani Halutz, John Walker”
From the descriptions by Jeff and Chris it is clear how cotterless and
cottered connections are tightened. Not so for splined. Are the ridges
(splines?) tapered on hub or crank (or both), or are they straight but
then so accurately machined to fit that there is no play at all?
Klaas Bil
On 11 Jun 2001 14:14:49 -0700, danger_uni@yahoo.com (Kris Holm) wrote:
>Hi,
>
>Cotterless and Splined cranks are the worst and best types of axle/crank
>arm connections, respectively.
>
>The below description of cottered cranks is good; I’ll expand on the
>splined description:
>
>Basically a splined axle has ridges ground into the axle that exactly fit
>into notches cut into the hole in the crank arm. When you slide the crank
>arm onto the axle the ridges and knotches fit into each other and prevent
>the crank arm from turning on the axle. You can have from 6 to 48
>knotches, or “splines” on an axle, depending on the brand.
>
>This technology is used in many areas of industry for connections that
>receive high torque. It is much stronger than a 4-square taper axle and
>does not have a tendency to work loose, which is why it is the best
>system for unicycle axles. Unfortunately it is much more expensive.
>
>-Kris. — Jeff Lutkus <lutkus@unicyclist.com> wrote:
>> These are ways that crank arms attach to hubs. My description is
>> probably not substantial enough to explain what these are if you have
>> not seen them already. If you’re still interested, ask someone at a
>> bike shop.
>>
>> Most unicycles (and bicycles) these days used cotterless connections.
>> The crank arm has a square hole. The hub is almost rectangular in shape
>> (it’s tapered so as you press the crank arms in farther, the fit is
>> tighter.)
>>
>> Cottered is the older technology (used in the schwinn I bought on
>> e-bay) and uses a circular hole in the crank arm, rather than square.
>> The hub is cylindrical, with a flat notch cut out of the side. A cotter
>> pin is like a bolt – threaded on one side, so you can attach a nut to
>> it, but more triangular on the other side. The cotter pin goes through
>> another hole in the crank arm, and goes against the notch in the hub.
>> The wedge nature of the cotter pin allows you to get a tight fit.
>>
>> I know very little about splined crank arms and hubs, except that they
>> are supposed to be able to take the most abuse without deforming. I get
>> the impression they are closer related to the cotterless setup, but
>> will not describe further, as I’ve never examined one.
>>
>> Jeff Lutkus jack of all trades, master of none
>>
>> — Trevor Coultart <coultart.remove.this@mac.com>
>> > wrote: A couple of words keep cropping up here which I don’t
>> > understand, (I know, I could just use a dictionary, but I guess I’m
>> > after meanings in the appropriate context!)
>> >
>> >They are:
>> >
>> >-“Cottered”
>> >
>> >-“Splined”.
>> >
>> >–
>> >Trevor Coultart (Anecdotal and/or amusing quotation currently
>> >unavailable)
>>
>> _____________________________________________________________
>> Free e-Mail and Webspace - http://Unicyclist.com
>
>
>__________________________________________________
>Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only
>$35 a year! http://personal.mail.yahoo.com/
–
“To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:” “Mossad, Dani Halutz, John Walker”
From the descriptions by Jeff and Chris it is clear how cotterless and
cottered connections are tightened. Not so for splined. Are the ridges
(splines?) tapered on hub or crank (or both), or are they straight but
then so accurately machined to fit that there is no play at all?
Klaas Bil
On 11 Jun 2001 14:14:49 -0700, danger_uni@yahoo.com (Kris Holm) wrote:
>Hi,
>
>Cotterless and Splined cranks are the worst and best types of axle/crank
>arm connections, respectively.
>
>The below description of cottered cranks is good; I’ll expand on the
>splined description:
>
>Basically a splined axle has ridges ground into the axle that exactly fit
>into notches cut into the hole in the crank arm. When you slide the crank
>arm onto the axle the ridges and knotches fit into each other and prevent
>the crank arm from turning on the axle. You can have from 6 to 48
>knotches, or “splines” on an axle, depending on the brand.
>
>This technology is used in many areas of industry for connections that
>receive high torque. It is much stronger than a 4-square taper axle and
>does not have a tendency to work loose, which is why it is the best
>system for unicycle axles. Unfortunately it is much more expensive.
>
>-Kris. — Jeff Lutkus <lutkus@unicyclist.com> wrote:
>> These are ways that crank arms attach to hubs. My description is
>> probably not substantial enough to explain what these are if you have
>> not seen them already. If you’re still interested, ask someone at a
>> bike shop.
>>
>> Most unicycles (and bicycles) these days used cotterless connections.
>> The crank arm has a square hole. The hub is almost rectangular in shape
>> (it’s tapered so as you press the crank arms in farther, the fit is
>> tighter.)
>>
>> Cottered is the older technology (used in the schwinn I bought on
>> e-bay) and uses a circular hole in the crank arm, rather than square.
>> The hub is cylindrical, with a flat notch cut out of the side. A cotter
>> pin is like a bolt – threaded on one side, so you can attach a nut to
>> it, but more triangular on the other side. The cotter pin goes through
>> another hole in the crank arm, and goes against the notch in the hub.
>> The wedge nature of the cotter pin allows you to get a tight fit.
>>
>> I know very little about splined crank arms and hubs, except that they
>> are supposed to be able to take the most abuse without deforming. I get
>> the impression they are closer related to the cotterless setup, but
>> will not describe further, as I’ve never examined one.
>>
>> Jeff Lutkus jack of all trades, master of none
>>
>> — Trevor Coultart <coultart.remove.this@mac.com>
>> > wrote: A couple of words keep cropping up here which I don’t
>> > understand, (I know, I could just use a dictionary, but I guess I’m
>> > after meanings in the appropriate context!)
>> >
>> >They are:
>> >
>> >-“Cottered”
>> >
>> >-“Splined”.
>> >
>> >–
>> >Trevor Coultart (Anecdotal and/or amusing quotation currently
>> >unavailable)
>>
>> _____________________________________________________________
>> Free e-Mail and Webspace - http://Unicyclist.com
>
>
>__________________________________________________
>Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only
>$35 a year! http://personal.mail.yahoo.com/
–
“To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:” “Mossad, Dani Halutz, John Walker”
> A couple of words keep cropping up here which I don’t understand> They
> are: “Cottered”
“Cottered”, is when Andy or Connie grabs your arm and says “Come here for
a second…”
> -“Splined”
“Splined”, is what Peter Bier has to do with slow learners; “I 'splined
that one to ya mate already!”
-Rick
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
> > A couple of words keep cropping up here which I don’t understand> They
> > are: “Cottered”
>
> “Cottered”, is when Andy or Connie grabs your arm and says "Come here
> for a second…"
>
> > -“Splined”
>
> “Splined”, is what Peter Bier has to do with slow learners; "I 'splined
> that one to ya mate already!"
- “Loctitorium”
John Childs invites you into his garage, which is also his “Loctitorium.”
JF
I can cure all the crazy people who have a screw loose. :^?
john_childs
>From: John Foss <john_foss@asinet.com>
>
> - “Loctitorium”
>
>John Childs invites you into his garage, which is also his “Loctitorium.”
>
>JF
Get your FREE download of MSN Explorer at http://explorer.msn.com
I can cure all the crazy people who have a screw loose. :^?
john_childs
>From: John Foss <john_foss@asinet.com>
>
> - “Loctitorium”
>
>John Childs invites you into his garage, which is also his “Loctitorium.”
>
>JF
Get your FREE download of MSN Explorer at http://explorer.msn.com
I can cure all the crazy people who have a screw loose. :^?
john_childs
>From: John Foss <john_foss@asinet.com>
>
> - “Loctitorium”
>
>John Childs invites you into his garage, which is also his “Loctitorium.”
>
>JF
Get your FREE download of MSN Explorer at http://explorer.msn.com