Cyclone on a Simplex drop-out...
#1
Thread Starter
Senior Member

Joined: Jun 2021
Posts: 2,028
Likes: 2,015
Bikes: '38 Schwinn New World, '72 Peugeot PX-10, 78 Raleigh Comp GS, ’80 Peugeot TH-8 tandem
Cyclone on a Simplex drop-out...
Is mounting a Suntour Cyclone MKII RD on a Simplex DO (older, non-threaded) just a matter of tapping the hole, or does a stop have to be ground into the DO as well?
*this is a not an 'important', sought-after or collectible frame, and I don't care about modifying it- though if it does require grinding a stop I may just slap a claw on instead.
*this is a not an 'important', sought-after or collectible frame, and I don't care about modifying it- though if it does require grinding a stop I may just slap a claw on instead.
Last edited by ehcoplex; 09-26-22 at 05:30 AM.
#2
Grinding would be required. I have a frame with a brazed-on stop at 7:00, but it still had to be ground from the 7:00 to 9:00 positions. My TdF was tapped and ground long ago, no brazing.
__________________
72 Fuji Finest 72+76 Super Course, 72 Gitane Tour de France, 74 P-10 & 79 Tandem Paramounts, 76 Grand Jubile,84 Raleigh Alyeska, 84 Voyageur SP, 85 Miyata Sport 10 mixte 89 Cannondale ST400 and a queue
72 Fuji Finest 72+76 Super Course, 72 Gitane Tour de France, 74 P-10 & 79 Tandem Paramounts, 76 Grand Jubile,84 Raleigh Alyeska, 84 Voyageur SP, 85 Miyata Sport 10 mixte 89 Cannondale ST400 and a queue
#3
Senior Member




Joined: Apr 2012
Posts: 21,767
Likes: 5,668
From: Middle Earth (aka IA)
Bikes: A bunch of old bikes and a few new ones
This is useful info on simplex drop outs (and other drop outs as well):
https://www.redclovercomponents.com/blog/1
Maybe look for a shimano crane RD if you don't want to grind a stop on the DO?
https://www.redclovercomponents.com/blog/1
Maybe look for a shimano crane RD if you don't want to grind a stop on the DO?
#4
Full Member


Joined: Sep 2008
Posts: 321
Likes: 93
From: Santa Cruz, CA
Bikes: Miyata six-ten, Miyata Grand Touring, Univega Sport Tour, Univega Gran Turismo, 80's Trek MTB, 2008 Dahon Mariner
[QUOTE=bikemig;22653419]This is useful info on simplex drop outs (and other drop outs as well):
https://www.redclovercomponents.com/blog/1
Nice article!
Cheers
Nubra
https://www.redclovercomponents.com/blog/1
Nice article!
Cheers
Nubra
__________________
Give thanks, for unknown blessings are already on their way.
~Native American Prayer
Give thanks, for unknown blessings are already on their way.
~Native American Prayer
#7
Fuji Fan

Joined: Mar 2009
Posts: 1,885
Likes: 338
From: Central IL
Bikes: Was Fuji and got my grails (Pro, Pro SR, Design Series, & Ti). Now I hunt 50's/60's road bikes.
It is too bad that the photos are not in the post below, since Rootboy had nice photos of a custom made adapter.
~ Campy Nuovo Record on the Simplex dropout * Execution
I bought an adapter and derailleur from Rootboy several years ago and I might end up mounting it on my purple Gitane TdF. If so, I will try to remember to take photos.
RIP Rootboy. I hope you have a tailwind...and don't need your thorncatchers.
~ Campy Nuovo Record on the Simplex dropout * Execution
I bought an adapter and derailleur from Rootboy several years ago and I might end up mounting it on my purple Gitane TdF. If so, I will try to remember to take photos.
RIP Rootboy. I hope you have a tailwind...and don't need your thorncatchers.
Last edited by beech333; 09-26-22 at 05:21 PM.
#9
Fuji Fan

Joined: Mar 2009
Posts: 1,885
Likes: 338
From: Central IL
Bikes: Was Fuji and got my grails (Pro, Pro SR, Design Series, & Ti). Now I hunt 50's/60's road bikes.
You mean "aren't" in rootboy's thread. That is a real shame; I remember this, and had a notion to copy them, but ultimately didn't. Has anyone tried to resuscitate them using the Wayback Machine? Does that not work if they were stored on another site?
I wonder if I should try measuring it. I do have access to cmm's and laser scanners, though I don't know what I would do with those measurement results. I certainly don't want someone else making money off of his ideas.
Last edited by beech333; 09-26-22 at 05:53 PM.






