Aha, you are right -- imagining back to when I have the shifters off the bike, they will ratchet without resistance in the "upward" direction and with resistance on the "downward" direction, this last being the direction that the derailleur spring would pull them. I confused the pull of the derailleur spring with an internal spring.
On Sat, Mar 9, 2013 at 6:40 AM, Matt Beebe <[email protected]> wrote: > That's not actually how it works- the internal cog in the silver shifter > is not spring loaded at all; it is simply friction'd against the inner wall > of the shifter mechanism. As a cog it is toothed, though, and the Silver > lever itself holds a pawl which grabs the wheel in one direction and floats > (ratchets) in the other. > > In summary the Silver mechanism is a friction shifter with a pawl/cog that > ratchets when pulling the cable, and grabs the cog to rely on its friction > to stop it from sliding back. > > The only reason I know this is because I have worn out the pawl in a Silver > shifter, and took it apart to overhaul it. > > Matt > > > On Friday, March 8, 2013 11:36:52 AM UTC-5, Patrick Moore wrote: >> >> There is an internal wheel that is spring loaded against the pull of >> the derailleur spring but ratchets via friction only in the opposite >> direction. That is, when you pull against a derailleur spring, the >> device ratchets and the resistance is friction only, but when you are >> moving the cable "with" the derailleur spring, the ratchets catch the >> internal spring loaded wheel and add additional resistance against >> slippage. >> >> Simplex's retrofrictions (IMO, even better than the SunTour system in >> the Silvers) is even nicer feeling, tho' that may be due to the small >> shifter barrels. >> >> And my right side Silver doesn't do this. Would like help in >> troubleshooting or a not-too-expensive replacement. >> ______________________________ >> >> On Fri, Mar 8, 2013 at 9:30 AM, Michael <[email protected]> wrote: >> > Looks like a mini-ratchetting system. Like micro-indexing or something. >> > >> > So I am guessing that when you shift gears, the ratchet mechanism holds >> > the >> > derailer in place over the cog so you will not have the chain slip off >> > if it >> > isn't a perfect shift, like what happens in pure friction shifting? >> > >> > That would be a nice improvement over friction, as I have had the chain >> > drop >> > to higher gear when standing. Ouch!! >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups >> > "RBW Owners Bunch" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an >> > email to [email protected]. >> > To post to this group, send email to [email protected]. >> > Visit this group at >> > http://groups.google.com/group/rbw-owners-bunch?hl=en-US. >> > For more options, visit https://groups.google.com/groups/opt_out. >> > >> > >> ____________________________________________ >> >> BUSINESS BUILDING COME-ON!! >> $300 off a $600 resume + letter or Linked In profile package with >> referral that leads to full price sale! Refer two full-pay clients and >> you get the package for free! >> >> I am not cheap, but I am very good. So they say. >> >> Patrick Moore, Ph.D, MBA, ACRW, Albuquerque, NM, USA >> http://resumespecialties.com/index.html * [email protected] >> __________________________________________________________________________ > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en-US. > For more options, visit https://groups.google.com/groups/opt_out. > > -- __________________________________________________________________________ BUSINESS BUILDING COME-ON!! $300 off a $600 resume + letter or Linked In profile package with referral that leads to full price sale! Refer two full-pay clients and you get the package for free! I am not cheap, but I am very good. So they say. Patrick Moore, Ph.D, MBA, ACRW, Albuquerque, NM, USA http://resumespecialties.com/index.html * [email protected] __________________________________________________________________________ -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
