|Friction Shifting question||Lone Gunman|
Feb 17, 2002 10:27 AM
|I have been searching sites for old parts and am wondering about a hyperglide style freewheel 6/7 speed that I saw for sale. Do these style freewheels shift any smoother than just the straight cookie cutter freewheels?|
|re: Hyperglide freewheels||guido|
Feb 17, 2002 12:39 PM
|Yes, hyperglide freewheels shift cleaner than straight cookie cutter freewheels. Along with Shimano's new "slant parallelogram" rear derailleurs, they helped make the first click shifters possible.
BTW, I'm looking for a 13 or 14-26 six speed freewheel. Where'd you find these HG freewheels?
|a few options||johan burnt eels|
Feb 17, 2002 1:03 PM
|for price alone the sachs 6/7/8 speed freewheels at both nashbar and performance are hard to beat but....
|UDA MAN!!! and 3 more questions...||Lone Gunman|
Feb 17, 2002 3:53 PM
|A followup question, I am wondering if the 28 will work with my derailer setup, I have no idea of it's limitations. I kinda live in a highly area and ride a triple but don't have to rely on it except for the lowest 4 gears on occasion. This rebuild has a 40 front chainring and in doing some of the charts a 40/28=39GI which will be in the range of use of my triple. It is a late 70's era Shimano 600 RD, cage size is a normal double, longer cage derailer is not an option as I want to keep this bike time period correct as possible. Even if it doesn't work, great link of the site for HG freewheels @ $20!! I may get a HG just to smooth out the shifting of the beast. 2 followup questions: Does that mean a hyperglide chain also? And possible to go 7 speed on the rear of the 126mm hub I am using?|
|sort of answers....||johan burnt eels|
Feb 17, 2002 6:23 PM
|7 speed on 126mm rear spacing usually works - depending on your hubs flange width and spacing - if you are building up the rear wheel then i dont see any problems.
i and many others have used the sachs pc-58 ($12 & technically 8 speed) with my 7 speed freewheels (dura-ace 12-19 and sachs 13-24) with great results but if you are not certain make sure your derailleur wheels and chainrings are ok with its narrower spacing.
the question of what the largest gear that your rear derailleur can handle i really wouldnt know. i guess it would be comfortable with a sachs 13-26. depending on whether you have 700c or 27inch wheels that gives you by my calc's with 40.4 and 41.5 which is still pretty good. i dont have experience with with the shimano 600.
my advice would be to buy two freewheels - most shimano and sachs items use the same tool. but if you look through the loose screws stuff you can perhaps tailor a single freewheel with 1 or 2 extra cogs if you are not averse to greasy hands and the odd swear word. and weight wise if you are interested its generally in this order from low to high ( for 7 speed =280 grams to 440 grams) regina america, shimano dura-ace, suntour , shimano hg/sachs.
and im not the man - i just happen to be thinking of a build of something a little retro-ish and have been weighing up all sorts of variations. hope to be of help.
|Ghosts from the past return.||guido|
Feb 17, 2002 7:47 PM
|My first real bike had Shimano 600 on it, HG 6 speed freewheel.
40-28 is plenty of gear if you're in decent shape. If not, it'll get you in decent shape! I never thought HG chains were worth a damn. They got flexy really fast. A standard Sachs PC-51 works great, and won't ruin your budget.
I have a 7 speed Suntour freewheel on 126 mm dropouts, but recently tried a Sachs 7 speed from Nashbar and it didn't screw on enough to clear the chainstay. Bummer. See my post to your post above, about freewheels. 6 speeds fit with plenty of clearance in 126 mm dropouts. Ultra 7 with narrower gaps between sprockets, will fit, but there's only 2 mm or so of clearance on the seat stay.
Wow, HG freewheels for $20.? Where?
Feb 17, 2002 9:14 PM
|My beaters will continue to beat! Your sources even have a 14-28, all useable gears for commuting and touring.|
|re: 'Slant parallelogram rear derailers'......||Rusty Coggs|
Feb 17, 2002 3:44 PM
|Actually invented by SUNTOUR in 1964.Shimano and others were not able to 'copy' them for 20 years.Shimano gets the nod for index shifting in 1985.|
|re: Friction Shifting - a different question||johan burnt eels|
Feb 17, 2002 1:09 PM
|how much dexterity and skill would be needed to friction shift an 8 or 9 speed freewheel or cassette.
i managed 7 speed just fine and am wondering if i would need the touch of a lesbian to precisely shift a smaller spaced cog setup. im not racing anymore but am looking to build something a little different.
stupid - yes, determined - no.
|re: Friction Shifting - a different question||scottfree|
Feb 18, 2002 5:37 AM
|Can't speak to nine speeds, but I friction shift eight no problem. If you can find NOS or good used Suntour Power Ratchet shifters, I would imagine they'd give you the touch needed the shift nine.|| |