1982 suntour cyclone Mark 2 rear derailleur issue
11-13-20, 09:09 AM
#1
Senior Member
Thread Starter
Join Date: Mar 2016
Location: North of Boston
Posts: 898
Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 211 Post(s)
Liked 199 Times
in
147 Posts
1982 suntour cyclone Mark 2 rear derailleur issue
Hi
I found out there is no tension on the RD.
The coiled metal circle creating the tension is broken or unattached.
Can this be fixed, or do I need a new derailleur?
Appreciate any and all help
I found out there is no tension on the RD.
The coiled metal circle creating the tension is broken or unattached.
Can this be fixed, or do I need a new derailleur?
Appreciate any and all help
11-13-20, 09:54 AM
#2
Senior Member
Join Date: Jun 2006
Posts: 20,305
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 3464 Post(s)
Liked 2,829 Times
in
1,995 Posts
Even back in the day, spare parts were tough, there was a minimum purchase.
Look for a similar bodied Mech, or just a replacement in toto.
Look for a similar bodied Mech, or just a replacement in toto.
11-13-20, 10:10 AM
#3
señor miembro
Join Date: Dec 2018
Location: Pac NW
Posts: 6,623
Bikes: '70s - '80s Campagnolo
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 3886 Post(s)
Liked 6,480 Times
in
3,206 Posts
You cage tension spring is broken. I've never replaced that type, which is difficult to remove. This version of the Cyclone isn't that expensive. You can sometimes find them at a good co-op for under $10.
11-13-20, 11:12 AM
#4
Senior Member
If it were still 1982 you could pretty easily source a spring, not so much today. Best option today is either replace, or find a parts donor. Can't think the time required to find/obtain/dissect a donor would be worthwhile dollar-wise, but if you like tinkering, it's tinker-ful.
__________________
Fuggedaboutit!
Fuggedaboutit!
Likes For pcb:
11-13-20, 11:51 AM
#5
Phyllo-buster
Join Date: Jan 2010
Location: Nova Scotia
Posts: 8,847
Bikes: roadsters, club bikes, fixed and classic
Mentioned: 133 Post(s)
Tagged: 0 Thread(s)
Quoted: 2298 Post(s)
Liked 2,054 Times
in
1,254 Posts
It's the best reason to pull apart a Suntour derailleur after a couple of years of all weather riding. Water gets inside and the spring rusts. It may take years but they will fail.
Last edited by clubman; 11-13-20 at 12:22 PM.
Likes For clubman:
Likes For Vintage_Cyclist:
11-19-20, 10:22 AM
#8
Senior Member
Join Date: Jun 2009
Location: Brooklyn, NY
Posts: 512
Bikes: 1970s Coppi/Fiorelli beater, 1973 Raleigh Competition, 1972 Bob Jackson, 1970 Cilo Sprint-X, 1985 Fuji Touring Series IV, 1969 Legnano Roma
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 217 Post(s)
Liked 198 Times
in
129 Posts
facing the exact same problem - and now that i have a donor, any pointers on how this particular type of spring can be prised out?
edit: solved... copious penetrant, and then used fragments of the broken old spring as a tool to dig down into and under the replacement spring, making it pop out ... eventually
edit: solved... copious penetrant, and then used fragments of the broken old spring as a tool to dig down into and under the replacement spring, making it pop out ... eventually
Last edited by niliraga; 11-19-20 at 11:24 AM.
11-19-20, 11:59 AM
#9
Senior Member
Join Date: Feb 2008
Location: Peoria, IL
Posts: 4,476
Mentioned: 86 Post(s)
Tagged: 0 Thread(s)
Quoted: 1829 Post(s)
Liked 3,375 Times
in
1,580 Posts
Glad that the OP is getting some help on the issue. I know I've seen people discuss this same spring failure on the C&V group in the past.
and if it is any consolation, the first generation Cyclone derailleurs had springs break too, even though they were a different design. Here's a photo of one of mine...
I really only use SunTour derailleurs on my bikes with a ton of miles, so I haven't abused my Campy or Shimano or SRAM derailleurs. Do they have similar spring failures??
Steve in Peoria
(hopefully one of my old Campy Nuovo Records won't break on my next ride)
and if it is any consolation, the first generation Cyclone derailleurs had springs break too, even though they were a different design. Here's a photo of one of mine...
I really only use SunTour derailleurs on my bikes with a ton of miles, so I haven't abused my Campy or Shimano or SRAM derailleurs. Do they have similar spring failures??
Steve in Peoria
(hopefully one of my old Campy Nuovo Records won't break on my next ride)
11-19-20, 04:48 PM
#10
Full Member
I have a Mark II that I mangled the cable bolt on. I could take it apart if you need the spring from it. I put my Allen wrench in it crooked when tightening the screw onto the cable and rounded it out. The rest of it is fine, but does have some rust on a couple pieces. Condition of the spring is unknown but it's still springy.
11-19-20, 09:48 PM
#11
Senior Member
Join Date: Nov 2013
Location: Near Pottstown, PA: 30 miles NW of Philadelphia
Posts: 2,186
Bikes: 2 Trek Mtn, Cannondale R600 road, 6 vintage road bikes
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 472 Post(s)
Liked 1,028 Times
in
404 Posts
I've fixed that problem twice now. One Cyclone broken as purchased and the other broke just 5 miles from the car. Both RDs have been serving mankind faithfully for years now. Search C&V via Google. There are threads here somewhere.
11-20-20, 05:07 PM
#12
Senior Member
Thread Starter
Join Date: Mar 2016
Location: North of Boston
Posts: 898
Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 211 Post(s)
Liked 199 Times
in
147 Posts
Thank you all.!!
And I sent BIKETALES a PM.
Thank YOU !!!
The spring would fix my RD !!!!
Greatly Appreciated
And I sent BIKETALES a PM.
Thank YOU !!!
The spring would fix my RD !!!!
Greatly Appreciated
