Rear derailleur & fender mishap
02-10-18, 03:29 PM
#1
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
Rear derailleur & fender mishap
2.3 miles from my car. ugh. pulled the junk down & out & was able to pedal back as a single speed. loosened the fender nuts & straightened that out too. wasn't pretty but it got me back. if I bend the fender stays back, I can salvage the fender but the derailleur is toast
Last edited by rumrunn6; 02-10-18 at 03:40 PM.
02-10-18, 04:08 PM
#2
Senior Member
Join Date: Dec 2010
Location: northern Deep South
Posts: 9,002
Bikes: Fuji Touring, Novara Randonee
Liked 2,006 Times
in
1,256 Posts
Pretty impressive! Did a stick get into the chain and you pedaled it into the derailer?
The fender is pretty simple, bending the stays should be fine. I suspect you'll need to do a proper derailer hanger alignment, as well as inspecting drive side spokes, before you finish the derailer replacement.
The fender is pretty simple, bending the stays should be fine. I suspect you'll need to do a proper derailer hanger alignment, as well as inspecting drive side spokes, before you finish the derailer replacement.
02-10-18, 04:34 PM
#3
Senior Member
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Liked 644 Times
in
365 Posts
That's not an expensive derailleur so I'd probably replace it too. If pushed, however, I think I could probably bend it back straight enough to work with just my hands. 7-speed isn't too picky about perfect alignment.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
02-10-18, 11:49 PM
#4
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,185
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Liked 3,992 Times
in
2,373 Posts
Don't forget to check that axle for straightness. The freewheeled hub makes this possibility greater then a cassette one.
Across my office is a Campy NR rear der that I wrapped up above my frame late one night. In my case the dropout was still good but the rack, fender, der, chain, wheel/axle all took a hit. In my case I rode into a pot hole and the collapsed rim allowed a spoke to bow out and catch the cage. Not the first or last time this has happened. Andy
Across my office is a Campy NR rear der that I wrapped up above my frame late one night. In my case the dropout was still good but the rack, fender, der, chain, wheel/axle all took a hit. In my case I rode into a pot hole and the collapsed rim allowed a spoke to bow out and catch the cage. Not the first or last time this has happened. Andy
02-11-18, 11:49 AM
#5
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
Pretty impressive! Did a stick get into the chain and you pedaled it into the derailer?
The fender is pretty simple, bending the stays should be fine. I suspect you'll need to do a proper derailer hanger alignment, as well as inspecting drive side spokes, before you finish the derailer replacement.
The fender is pretty simple, bending the stays should be fine. I suspect you'll need to do a proper derailer hanger alignment, as well as inspecting drive side spokes, before you finish the derailer replacement.
re: hanger alignment, so those parts are separate?
02-11-18, 11:52 AM
#6
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
02-11-18, 11:54 AM
#7
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
02-11-18, 12:28 PM
#9
Senior Member
Join Date: Dec 2010
Location: northern Deep South
Posts: 9,002
Bikes: Fuji Touring, Novara Randonee
Liked 2,006 Times
in
1,256 Posts
Not knowing the bike, and guessing a bit looking at the pictures, I think the derailer hanger is part of the frame on this bike. It's the tab hanging down and behind the wheel dropouts. Eyeball it when you take the old derailer off, and if it's obviously bent in (or out) take a big adjustable wrench and try to straighten it. If shifting can't be tuned in with the new derailer by adjusting cable tension, take it to your LBS to get it checked out.
02-11-18, 01:05 PM
#10
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
trying to figure out the correct replacement part. found these two any opinions?
TX75
https://www.amazon.com/dp/B003ZMDJSK...XFURGNTS&psc=0
TX55
https://www.amazon.com/dp/B003ZM9RDQ...XFURGNTS&psc=1
TX75
https://www.amazon.com/dp/B003ZMDJSK...XFURGNTS&psc=0
TX55
https://www.amazon.com/dp/B003ZM9RDQ...XFURGNTS&psc=1
02-11-18, 01:28 PM
#11
Senior Member
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Liked 644 Times
in
365 Posts
I doubt there is any performance difference between those two derailleur offerings.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
02-11-18, 07:16 PM
#12
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
thanks. just gave the wheel a better look after washing it. all spokes are intact (attached at both ends) & feel like they all have the same tension. but I did find one with a dent. also when I spin the wheel it has an irregularity at one point so that it taps a brake pad. guess I'll get the spoke replaced & wheel trued. I guess the offending stick broke & flew away. it's all my fault completely. the muddy trail was like glue so I was riding the edge over some leaves to avoid the mud in this spot
02-11-18, 09:07 PM
#14
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
02-13-18, 12:28 PM
#15
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
took the wheel & derailleur down to our LBS. owner says go get the bike & I'll set you up while you wait. not kidding you. an hour later & $90 I'm good as new. told him he robbed me of my street cred by fixing my bike for me. he just smiled & said but now he has piece of mind
he had what looked like a no-name unit in a drawer out back
left the spoke & just tweaked a few spokes
left the cable just trimmed it & shortened some excess cable at the top & replaced the small section of housing at the derailleur
also he was able to tweak the alignment of the new unit (incl hanger) which I think was his main interest. the old hanger looked fine but his replacement had a hanger attached, so ...
of course we had to listen to ea. others stories, but it's all time well spent.
he had what looked like a no-name unit in a drawer out back
left the spoke & just tweaked a few spokes
left the cable just trimmed it & shortened some excess cable at the top & replaced the small section of housing at the derailleur
also he was able to tweak the alignment of the new unit (incl hanger) which I think was his main interest. the old hanger looked fine but his replacement had a hanger attached, so ...
of course we had to listen to ea. others stories, but it's all time well spent.
Last edited by rumrunn6; 02-13-18 at 12:31 PM.
02-13-18, 09:23 PM
#16
Senior Member
good upgrade
the logo's are scraped off but it resembles an Altus derailer
main point being, the main body pivot is thicker aluminum vs the stamped steel plate on your dead one. Less wiggly, more precise shifting
the logo's are scraped off but it resembles an Altus derailer
main point being, the main body pivot is thicker aluminum vs the stamped steel plate on your dead one. Less wiggly, more precise shifting
02-13-18, 09:44 PM
#17
Senior Member
Join Date: Aug 2017
Location: Central Io-way
Posts: 2,690
Bikes: LeMond Zurich, Giant Talon 29er
Liked 643 Times
in
480 Posts
Yipes! I have yet to have this happen, reason: Pure stupid luck!
I'd agree this looks to be an altus, so you even got an upgrade!
Ironically I purchased a new in package tourney RD today for my beater. The older style then yours. I'm curious because the majority of nasty failures I've seen like that have been Tourney derailleurs. Is there something about them that causes this, or are they just not as forgiving if you put a lot of miles on them?
I'd agree this looks to be an altus, so you even got an upgrade!
Ironically I purchased a new in package tourney RD today for my beater. The older style then yours. I'm curious because the majority of nasty failures I've seen like that have been Tourney derailleurs. Is there something about them that causes this, or are they just not as forgiving if you put a lot of miles on them?
02-14-18, 04:41 AM
#18
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
02-14-18, 04:44 AM
#19
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
I don't think sticks play well together with spokes & derailleurs regardless of brand. btw mine did not have a lot of miles on it
02-14-18, 10:02 PM
#20
Senior Member
Yipes! I have yet to have this happen, reason: Pure stupid luck!
I'd agree this looks to be an altus, so you even got an upgrade!
Ironically I purchased a new in package tourney RD today for my beater. The older style then yours. I'm curious because the majority of nasty failures I've seen like that have been Tourney derailleurs. Is there something about them that causes this, or are they just not as forgiving if you put a lot of miles on them?
I'd agree this looks to be an altus, so you even got an upgrade!
Ironically I purchased a new in package tourney RD today for my beater. The older style then yours. I'm curious because the majority of nasty failures I've seen like that have been Tourney derailleurs. Is there something about them that causes this, or are they just not as forgiving if you put a lot of miles on them?
02-15-18, 02:01 PM
#21
aka Tom Reingold
Join Date: Jan 2009
Location: New York, NY, and High Falls, NY, USA
Posts: 40,660
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Liked 2,622 Times
in
1,525 Posts
Your noname derailleur may be better than the one it replaced.
No need to change spokes. Slightly bent spokes are OK, as they can still maintain tension.
No need to change spokes. Slightly bent spokes are OK, as they can still maintain tension.
__________________
Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
02-15-18, 02:29 PM
#22
Senior Member
Thread Starter
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 29,593
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
Liked 3,610 Times
in
2,358 Posts
Thread
Thread Starter
Forum
Replies
Last Post
Caliper
Cyclocross and Gravelbiking (Recreational)
5
09-06-18 01:59 PM
Thulsadoom
Bicycle Mechanics
2
08-21-11 11:47 AM
