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 Post subject: RD problem
PostPosted: Sun Mar 22, 2015 2:11 am 
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friendly kitty
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I've got an old Kona that wont shift through the whole cassette. It's an 3x8 speed with Shimano index shifters. It'll shift from 8 (smallest cog) to 4, then the shifter has no more resistance to shift to the 3 larger cogs, the shift lever moves freely. I had the bike set up SS, but the friend who I'm giving the bike to wanted gears, so I put everything back how it was when I got it. The FD works fine, just can't figure out the RD. I don't think it's a cable issue.

Any ideas on what the problem might be?


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 2:35 am 
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friendly kitty
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Joined: Sat Feb 02, 2013 10:27 pm
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Location: NoVA
When adding tension does it shift into each gear cleanly (8-7-6-5-4) then just stop climbing?

...sent by dixie cup/string


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 2:40 am 
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friendly kitty
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Yes, it shifts perfectly fro 8-4, then no tension at the shift lever to go the remaining 3. I can pull the exposed cable on the top tube with my hand and it'll shift to the 3 big cogs.


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 2:45 am 
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friendly kitty
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Location: NoVA
One of two ideas.
Pull the cable and lube it. Before setting tension be sure that the shifter is in the 8th or most relaxed position. Also practice safe shifting, and add a mouse condom.

...sent by dixie cup/string


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 3:03 am 
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friendly kitty
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Joined: Mon Dec 29, 2014 10:56 pm
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Location: Grand Prairie, TX
I had to throw our an old 8 speed shifters because the pawls inside the shifter (the part that clicks) freezed up pretty badly and I couldn't fix it. Try some videos about these old shifters:

https://www.youtube.com/watch?v=AKLejn7f_Po


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 3:04 am 
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friendly kitty
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Location: Grand Prairie, TX
https://www.youtube.com/watch?v=0Wtb57AXD0o


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 3:21 am 
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friendly kitty
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Thanks, southsideguy! The first video nailed it, the pawl wasn't engaging, a little lube and it's fixed!

Now I can give the bike to my friend and hopefully new riding partner!


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 3:41 am 
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friendly kitty
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Flyin_W wrote:
One of two ideas.
Pull the cable and lube it. Before setting tension be sure that the shifter is in the 8th or most relaxed position. Also practice safe shifting, and add a mouse condom.

...sent by dixie cup/string


Thanks for the help, W! I'm fresh outta mouse condoms, got some tape on there now.


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 3:48 am 
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friendly kitty
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Location: NoVA
Good catch on the shifter pawls. Your gift is kind, and friend is fortunate.

...sent by dixie cup/string


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 4:19 am 
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friendly kitty
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My friend has helped me more than a few times, it's the least I can do, gave him some Teva's too, just need him to get a helmet.

I am gonna miss that old Lava Dome, hopefully I'll still get to visit 8-)


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 Post subject: Re: RD problem
PostPosted: Sun Mar 22, 2015 9:45 am 
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bad kitty!
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Nice catch Southsideguy!


Magura :)

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DIY all the way


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 Post subject: Re: RD problem
PostPosted: Mon Mar 23, 2015 1:47 am 
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friendly kitty
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Joined: Mon Dec 29, 2014 10:56 pm
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Location: Grand Prairie, TX
I just went through this on while getting my mom's old SJ-FSR ready to ride again... I couldn't fix hers... even degreasing it and relubing, it was just siezed. I swapped her little ancient LX shifter over for am XTR I had. LoL. She'll never know how cool she is.


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 Post subject: Re: RD problem
PostPosted: Mon Mar 23, 2015 1:54 am 
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friendly kitty
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southsideguy wrote:
She'll never know how cool she is.


Lol!

Thanks again, southsideguy! Rode with my friend today, he really likes the bike and it shifted perfectly! :handgestures-thumbup:


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