Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the October Giveaway for the Haven Bicycle Co. beach cruiser


Skipping Gear
#1
Hi new user here. Need advice.
I fine tuned my bicycle Schwinn High Plains Aluminum Paramount design USA made MB, with Shimano 7 speed 200GS rapidfire shifters. Had the bike for 18 years and always worked fine. But had a clicking noise so I retuned front and rear derailleurs. (The noise turned out to be elsewhere)
But in doing this I discovered that my rear derailleurs shifts fine from smallest gear(outside) to the largest gear(inside) but shifting from the largest gear to the smallest always misses the third smallest gear and double shifts from the fourth gear to the second smallest. Just cannot tune that out.
Everything works good and is clean and lubricated. No Idea?? Maybe in the shifter itself? Thats clean and lubricated too.

BTW in looking at different sites for instruction I found this one to be the best.
Never Give Up!!!
  Reply
#2
If all your cables are lubed and working smoothly I'm thinking it could be a bent derailleur hanger. Here's video that shows how to repair it, but you'll need a special tool:

http://bikeride.com/derailleur-hanger-alignment/

The tool costs about $50, so you might be better off taking it to your local shop for a quick alignment.
  Reply
#3
(04-11-2010, 03:34 PM)Alex Ramon Wrote:  If all your cables are lubed and working smoothly I'm thinking it could be a bent derailleur hanger. Here's video that shows how to repair it, but you'll need a special tool:

http://bikeride.com/derailleur-hanger-alignment/

The tool costs about $50, so you might be better off taking it to your local shop for a quick alignment.

Thanks for reply. I was leaning toward the shifter mechanism missing a detent. Shimano 200GS 7speed rapid fire. Checked your shifter overhaul info. Got about half way in but did not want to pull the cable out, so cleaned and lubed again. BTW be very careful with spray cleaners some like Barryman Carburetor cleaner is tough on paint. Not recommended with painted parts.

Tried adjusting cable barrel again and same result still missing one 3rd smallest sprocket on the way down, going up toward hub is OK. Weird.

Will look at derailer although I set that following Parks and your info and it looks OK.
Never Give Up!!!
  Reply
#4
Hi Alex looked at your bent hanger video than looked at mine. Its a solid part of the frame about 3/8 thick, very strong and putting a straight edge against it does not show distortion. I think the derailer would break before the frame could bend.
But will take is to a bike shop for a looksie. I did all I can.
Never Give Up!!!
  Reply
#5
It also could be your cable housing or your derailleur adjustment cable or it could be like Alex said too. Just go back over what all you have done and make sure you did it the right way its so easy to goof I should know have done it so many times until its not even funny. lol Good luck and let us know what you find out and how you fix it too.
My dad always told me a Sledge a matic can fix any thing.
  Reply
#6
(04-11-2010, 04:42 PM)Surly LHT Wrote:  It also could be your cable housing or your derailleur adjustment cable or it could be like Alex said too. Just go back over what all you have done and make sure you did it the right way its so easy to goof I should know have done it so many times until its not even funny. lol Good luck and let us know what you find out and how you fix it too.

Thanks for advice guys took it to a bike shop and they confirmed that its as I suspected, the handlebar shifting mechanism is worn in that spot. It is the Shimano 200gs 7speed model.
He showed me replacement shifter units for both sides that come as set, these were the top mounted push pull units.Said the new stuff is not as durable.

He also looked over my 1992 Schwinn and said they do not make them as they use to I should hang onto the bike and live without one gear.

I agree unless anyone can recommend a suitable replacement or fix. Its a under bar two lever push push system. Thanks yoall.
Never Give Up!!!
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
13,642
05-19-2014, 11:52 AM
Last Post: nfmisso
 
11,514
08-25-2013, 08:26 AM
Last Post: 1FJEF
 
6,548
02-01-2013, 10:02 AM
Last Post: Bill
 
21,394
10-11-2012, 01:17 PM
Last Post: chainslip

Forum Jump:

[-]
10 Latest Posts
[Sponsored] Souke Sports Cycling Apparel...
Yesterday 09:40 PM
What was your first bicycle?
Yesterday 03:42 PM
WD40 on chain?
Yesterday 07:29 AM
VINTAGE DERAILLEURS: Campagnolo 50s-80s
Yesterday 02:37 AM
What's your No.1 concern when you purcha...
10-17-2021 09:18 PM
Chain skips under heavy load when pedall...
10-17-2021 06:18 PM
Gears changing by themselves
10-17-2021 06:05 PM
Bike evaluation
10-16-2021 02:06 AM
V Brakes just won’t adjust properly
10-16-2021 12:19 AM
Is this frame dent a concern?
10-13-2021 04:50 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Souke Sports
27 posts
no avatar 2. Criminal
11 posts
no avatar 3. ReapThaWhirlwind
10 posts
no avatar 4. Zviedrs
9 posts
no avatar 5. Jesper
8 posts