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Old 11-05-18, 11:13 PM
  #1801  
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Originally Posted by mountaindave View Post
Lots of half-step plus granny bikes recently - very cool!
Iíve never rode one before. I like the idea of it though, should be fun. The top mount shifters should make it a little easier for me to get used to.

I canít decide on a couple things for the bike. Plenty of time to decide over winter.
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Old 11-06-18, 12:01 AM
  #1802  
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Originally Posted by natterberry View Post


Iíve never rode one before. I like the idea of it though, should be fun. The top mount shifters should make it a little easier for me to get used to.

I canít decide on a couple things for the bike. Plenty of time to decide over winter.
I sort of geek out about them. Mind posting the FW sprockets and chainring combos? I'll work up a gear ratio sheet.
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Old 11-06-18, 01:16 AM
  #1803  
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Dag-nabbit @natterberry that thing looks fine!
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Old 11-06-18, 07:33 AM
  #1804  
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Originally Posted by mountaindave View Post
i sort of geek out about them. Mind posting the fw sprockets and chainring combos? I'll work up a gear ratio sheet.
28/45/50

14/16/19/23/27/30
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Old 11-06-18, 08:05 AM
  #1805  
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Originally Posted by natterberry View Post
28/45/50

14/16/19/23/27/30
Looking at your photo, I guessed that the FW was not original - itís not big enough. Your current FW wonít act as a half step. I have the exact same crank setup but use a different 5s FW. Yours is in orange, mine is in green:



To understand these charts, one must have a basic understanding of a half step setup. The step between FW sprockets should be twice the step between chainrings. This allows each step in the FW to be split in half by a concurrent shift up front (a double shift).

I have used gear ratios under each chainring, not inches. Second, the percents represent the amount of change between gears when one double shifts. The firth column, K, represents the deviation of a double shift (both FW and chainring) from a single shift (chainring only - in this case, 11.1%). Ideally you want a 0% deviation, but thatís not possible. To evaluate the efficiency of a half step setup, I then find the sum of the absolute values of the %deviation. The lower the number, the closer the setup is to ideal. I have not yet found a more ideal setup than a 50/45 and this particular 5s 14-32 FW.

Probably way more math than you wanted this early, but there it is. If anyone wants the spreadsheet, Iíd be happy to share. One can also more visually see the steps on the HTML5 gear calculator website: http://www.gear-calculator.com

Last edited by mountaindave; 11-21-18 at 09:37 AM.
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Old 11-06-18, 10:30 AM
  #1806  
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The '82 catalog lists the 14-16-19-23-27-30 freewheel as stock for the 614. Probably would have benefitted from a xxxx-28-32 at the large end, but that would probably have required a longer FW cage.
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Old 11-06-18, 01:34 PM
  #1807  
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Originally Posted by madpogue View Post
The '82 catalog lists the 14-16-19-23-27-30 freewheel as stock for the 614. Probably would have benefitted from a xxxx-28-32 at the large end, but that would probably have required a longer FW cage.
Good research on your part, bad research on Trekís part. They should have been more familiar with slide rules!
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Old 11-06-18, 03:06 PM
  #1808  
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Originally Posted by mountaindave View Post
They should have been more familiar with slide rules!
For reasons vhich at this moment must be all to obvioussszzzz....

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Old 11-06-18, 07:31 PM
  #1809  
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Originally Posted by mountaindave View Post

Looking at your photo, I guessed that the FW was not original ...

Probably way more math than you wanted his early, but there it is. If anyone wants the spreadsheet, Iíd be happy to share.
Thank you for this, Dave. Very informative. Would you mind sending over the spreadsheet? Iíd like to play around with it a bit.
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Old 11-06-18, 10:12 PM
  #1810  
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Originally Posted by natterberry View Post
Thank you for this, Dave. Very informative. Would you mind sending over the spreadsheet? Iíd like to play around with it a bit.
PM sent
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Old 11-07-18, 10:59 PM
  #1811  
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Looks like Iíll be switching up my gearing some, I should be able to make a nice setup. Using gear-calculator to help visualize, looks like buying a 48t ring and moving my 13-28 from the 760 should make for nice steps.

Just picked up one of the CR18 wheelsets from Velomine, Iíll pick those up on the way home.

Edit: Harris Cyclery also has Nittoís ďMarkís RackĒ on closeout for $99.95. Iíve been eyeing those anyway, had to nab one yesterday.

Last edited by natterberry; 11-07-18 at 11:06 PM.
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Old 11-20-18, 06:49 PM
  #1812  
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I upsized my 610! I swapped an Ď84 22.5Ē 610 and an Ď86 560 for this long legged and prestine 24Ē 610! I loved the bike in 22.5 and itís only better in the right size!
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Old 11-20-18, 07:50 PM
  #1813  
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My 560 needs tires.







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Old 11-21-18, 09:23 AM
  #1814  
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Originally Posted by natterberry View Post
Edit: Harris Cyclery also has Nittoís ďMarkís RackĒ on closeout for $99.95. Iíve been eyeing those anyway, had to nab one yesterday.
Thanks for that. Just ordered one along with a Nitto seatpost that I "needed" to get free shipping.
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Old 11-23-18, 08:14 PM
  #1815  
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My beloved 660. I guess it's not technically a 660 anymore, as just about everything has been changed to Shimano 600/tri-color. A few finishing details to take care of over the winter, but I love this bike.
Here's my thread about it: My recent find: '85 TREK 660

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Old 12-01-18, 12:32 PM
  #1816  
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Thanks to Shrevvy, another Trek added to the stable. Going to be fun comparing it to the 760.

Itll be receiving Shimano 6207/6208.

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Old 12-02-18, 10:08 PM
  #1817  
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My 1982 412. The frame is from Craigslist, the drivetrain is entirely from the co-op and the cockpit is mostly new bits. The frame is nothing special, but I like the build and it makes for a great brevet bike on a budget.

- 1982 Trek 412
- Nitto Noodles wrapped in Brooks microfiber tape. Nitto technomic stem
- Gilles Berthoud Aspen Open atop a VO long set back post
- NGC500 calipers and kool stop salmon inserts paired with new Gran Compe aero levers
- Sugino XD 48-36-24 triple stripped and polished on a Tange bottom bracket
- Shimano XT m735 rear and Deore front derailleur. Ultegra 12-27 cassette shifted by 9 speed Shimano bar ends
- 36h Velocity Dyads laced to White Industries MI5 hubs. DT Swiss competition spokes. VO faceted fenders
- Avocet quill pedals, straps and cages
- Nitto m18 front rack

Mandatory at-service-station-during-a-ride shot

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Old 12-02-18, 10:17 PM
  #1818  
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Originally Posted by fliplap View Post

My 1982 412. The frame is from Craigslist, the drivetrain is entirely from the co-op and the cockpit is mostly new bits. The frame is nothing special, but I like the build and it makes for a great brevet bike on a budget.

- 1982 Trek 412
- Nitto Noodles wrapped in Brooks microfiber tape. Nitto technomic stem
- Gilles Berthoud Aspen Open atop a VO long set back post
- NGC500 calipers and kool stop salmon inserts paired with new Gran Compe aero levers
- Sugino XD 48-36-24 triple stripped and polished on a Tange bottom bracket
- Shimano XT m735 rear and Deore front derailleur. Ultegra 12-27 cassette shifted by 9 speed Shimano bar ends
- 36h Velocity Dyads laced to White Industries MI5 hubs. DT Swiss competition spokes. VO faceted fenders
- Avocet quill pedals, straps and cages
- Nitto m18 front rack

Mandatory at-service-station-during-a-ride shot

That sounds like some sweet equipment on there! I'd love to see more pix!
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Old 12-03-18, 02:39 AM
  #1819  
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@fliplap that is a stunning 412! Proper 25.5" size and everything. My '80 412 with the same tubing etc is such a nice rider. Plenty capable, classy, with great ride and road manners. Ace fender line work there, as well as color matching the saddle and bar tape.
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Old 12-03-18, 05:15 AM
  #1820  
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Originally Posted by fliplap View Post

My 1982 412. The frame is from Craigslist, the drivetrain is entirely from the co-op and the cockpit is mostly new bits. The frame is nothing special, but I like the build and it makes for a great brevet bike on a budget.

- 1982 Trek 412
- Nitto Noodles wrapped in Brooks microfiber tape. Nitto technomic stem
- Gilles Berthoud Aspen Open atop a VO long set back post
- NGC500 calipers and kool stop salmon inserts paired with new Gran Compe aero levers
- Sugino XD 48-36-24 triple stripped and polished on a Tange bottom bracket
- Shimano XT m735 rear and Deore front derailleur. Ultegra 12-27 cassette shifted by 9 speed Shimano bar ends
- 36h Velocity Dyads laced to White Industries MI5 hubs. DT Swiss competition spokes. VO faceted fenders
- Avocet quill pedals, straps and cages
- Nitto m18 front rack

Mandatory at-service-station-during-a-ride shot

Beautiful.

What bags did you choose? Is the front stable without a decaleur?
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Old 12-03-18, 01:39 PM
  #1821  
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Originally Posted by eom View Post
Beautiful.

What bags did you choose? Is the front stable without a decaleur?
I made the bags. That front bag has stiffeners on 5 sides, velcro on the bottom and a tombstone loop, so it's really solid, but it's also only 6" tall. I made it for fair weather events and it isn't big enough for a ride where I'd need more layers, or an unsupported 600km. I'll likely need a decaleur for its incoming, taller, pocket-i-er, replacement.

Oh, and in case anyone was wondering, those are 700x32mm Panaracer Paselas. The frame will just barely clear 700x38 Voyager Hypers without fenders. Chain stay clearance is the limiting factor, dimpling would make them clear with flying colors.

Last edited by fliplap; 12-03-18 at 02:35 PM.
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Old 12-06-18, 07:05 PM
  #1822  
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Here's my Emonda. Only thing that are still original on it are the handlebar, frame and fork. Everything else has been upgraded and changed. In a few short weeks, I plan to replace the handlebar too. But I do love this beauty.
The Batbike
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Old 12-06-18, 07:18 PM
  #1823  
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Whoa whoa whoa whoa whoa! David, that is a little too new and fast looking for a mirror��
Remove the mirror and go put this picture in the road bike sub forum. ��
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Old 12-06-18, 07:47 PM
  #1824  
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^^^^ But first, show us the mirror. I'm always curious about mirror options, whether it be for drop bars or uprights.
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Old 12-06-18, 08:00 PM
  #1825  
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Originally Posted by Classtime View Post
Whoa whoa whoa whoa whoa! David, that is a little too new and fast looking for a mirror��
Remove the mirror and go put this picture in the road bike sub forum. ��
I know the mirror throws folks off, but that little bad boy has saved my hide many times out. People here in Los Angeles, drive like A$$holes.
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