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Old 08-07-06, 03:38 PM   #1
gbowne1
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Gripshift 3x7 (21sp)

Hi all!

I have a gripshift problem. They're really clumbsy shifting. They go back and forth all directions, and from tight to loose and everything in between.

I love the shifters and how they're "supposed to work", but mine don't do as I have seen them do on brand new bikes, etc.

How do I identify which version I have? How do I get them cleaned and adjusted properly? How does the cable set up supposed to work? Are there any tricks and tips they don't show you on how to do this? Sometimes they even bump shift like when I jump off a curb they move enough to shift into a different gear. Sometimes the shifters even get stuck too.

These are the 3 front / 7 rear Gripshift units I got on my handlebars. One even says gripshift 5 and the other says gripshift max, along with some others.

There outta be a huge wiki page or FAQ on gripshift and building a great gripshift setup.

Greg
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Old 08-07-06, 07:17 PM   #2
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The gripshifters I put on my wife's and daughter's bikes work so well that I wonder why they're not more popular. You won't have trouble finding negative comments about them on the internet.

You need to find shifters that are made for 3X7 and you need to make sure to get the ones that are designed to work with Shimano if you have a Shimano rear derailer. The 3X7 shifters are getting pretty scarce, but you may be able to find them on eBay. The ones on my daughter's bike are SRAM Rocket 9 speed. I think they're fairly high end. The ones on my wife's bike are a cheaper model SRAM 7 speed, but they work just as well. Maybe the expensive ones will last longer. A lot of people have trouble with the cable routing inside the shifter, but I think the shifters are normally sold with the cables installed. Be sure to study how the old cables are routed when the time comes to replace them.

That's about all I can tell you about gripshifters because thay's about all I know.
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Old 08-07-06, 07:31 PM   #3
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www.sram.com has a lot of pdf covering different SRAM components. Look under technical. Nashbar might have some of these. SRAM makes two series, one compatible with Shimano type RD, the other compatible with SRAM RD. One pair I had lasted about 13k miles before getting flaky. They do wear out eventually and get flaky in the indexing, start to slip and won't hold position. They are incredibly easy to disassemble but there is not much fixable inside, hardly anything to it, very simple mechanism. Unless it is dirty you best start casting about for a replacement.
Steve
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Old 08-07-06, 09:00 PM   #4
gbowne1
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Thanks for your help.

I think I'm off to the local bike shop to ask the tech a few questions.

Greg
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Old 08-07-06, 09:22 PM   #5
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Before blaming the shifters, check your cable tension and derailluer adjustment, and even the mechainical state of the derailluers. A friend of mine, who hammers on her big ring all the time, couldn't get her front derailluer to downshift. She had neglected to oil the pivots and the derailluer had rusted from her sweat. A good shot of PB Blaster, chased with Tri-Flow, fixed it.
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Old 08-08-06, 05:01 AM   #6
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Quote:
Originally Posted by gbowne1
I have a gripshift problem. They're really clumbsy shifting. They go back and forth all directions, and from tight to loose and everything in between.

I love the shifters and how they're "supposed to work", but mine don't do as I have seen them do on brand new bikes, etc.
From your description the easiest repair would probably be to replace your shifters. Replacements aren't too expensive.

Look at your rear derailleur. If it says "Grip Shift" on it, you need ESP 7-speed shifters. If it says "Shimano" on it, you need MRX 7-speed shifters. New shifters will come with new cables already installed in them which eliminates the hardest part of the project.
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Old 08-08-06, 07:34 AM   #7
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As an FYI, I have two bikes with the same gear configs, derailers, etc. but they have different SRAM shifters. On one bike, they have the the Revo-shift grips, which switch to the bigger gears by twisting away. The Grip-shift models switch to the bigger gears by twisting towards you.

The Revo shift works like a charm. Very fast, no searching or waiting.

I agree that you should check the SRAM site, as there is a lot of good info there. Good luck and let us know how you make out.

Last edited by Javan; 08-08-06 at 07:42 AM.
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Old 08-08-06, 07:47 AM   #8
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Nashbar has 7-speed gripshift on sale really cheap at the moment.
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Old 08-08-06, 05:09 PM   #9
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Quote:
Originally Posted by Javan
As an FYI, I have two bikes with the same gear configs, derailers, etc. but they have different SRAM shifters. On one bike, they have the the Revo-shift grips, which switch to the bigger gears by twisting away. The Grip-shift models switch to the bigger gears by twisting towards you.

The Revo shift works like a charm. Very fast, no searching or waiting.
Look more closely, Revo shifters are Shimano, not SRAM.
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Old 08-08-06, 07:42 PM   #10
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Quote:
Originally Posted by Retro Grouch
From your description the easiest repair would probably be to replace your shifters. Replacements aren't too expensive.

Look at your rear derailleur. If it says "Grip Shift" on it, you need ESP 7-speed shifters. If it says "Shimano" on it, you need MRX 7-speed shifters. New shifters will come with new cables already installed in them which eliminates the hardest part of the project.
That's the same thing that I told him, except for the part about looking for a derailer that says "Grip Shift" on it.
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Old 08-09-06, 02:25 AM   #11
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Quote:
Originally Posted by Dirtdrop
That's the same thing that I told him, except for the part about looking for a derailer that says "Grip Shift" on it.
Were there actually "Grip Shift" specific derailleurs? I thought everything Shimano made was a version of Deore.
Tim
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Old 08-21-06, 11:34 PM   #12
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They say Grip Shift. I heard that there were so many different versions of the Grip Shift line that it would be hard to know exactly what to get.

Right now I have to examine which bikes I am going to keep.

My first custom bike was a 10 speed $5 garage sale mountian bike that I modded to 24 speed. My problem then is that I had an 8 cassette and a 7 shimano thumb shifter. I put all XT parts on the bike (except for the levers) and had new MAVIC wheels built with QR hubs.

I eventually thought about having a custom frame built just for me (when the $$ for that comes my way). I got a ton of stuff I want on my custom bike but probaby won't get right away.

I have the front shocks on my two soft tails, and they are loose.. wayyyy loose.. I'm thinking they have to be redone now.. since it's probably been a while since they been looked after properly.

Greg
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Old 08-22-06, 01:47 AM   #13
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If he has a Shimano derailleur, he'll need an "shimano compatible" derailleur. If it's a SRAM derailleur, he'll need something that says ESP on it.
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Old 08-25-06, 11:44 PM   #14
gbowne1
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Here are 5 of the 6 bikes I have:

Diamondback Crestview
Diamond Wilwood
Takara 10sp (converted to 24 speed)
IronMan Triathlon Pro (Titanium frame?)
Magna CR Cliff Runner 88 Full suspension
Magna XL2

I also have a 18 or 21 speed Schwinn but it's buried in my garage and I can't get to it yet to identify it

I like both of the Magna's but some day I want my own hand built frame

Greg
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Old 08-25-06, 11:56 PM   #15
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The Magna CR has/had a 36 spoke rear hub on it that was geared like this:

14, 16, 18, 20, 22, 24 and 28.

the teeth are approx 1/2" apart center to center

The largest gear is about 4.5" dia.

The spoke holes are ~.3125" apart. and are ~.125" dia.

Inside the small gear says Falcon 5D0 US PAT5569107

The width between the flanges is ~2.125"

the total length from end to end including the wheel studs is: 6.5"

It was on a wheel that got dished out badly.. the tire reads 26x2.10" TIANDI brand

Obviously I can't save the rim but the tire is good so I cut the spokes they appeared to be 2x.

Greg
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Old 08-26-06, 07:33 AM   #16
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I like both of the Magna's but some day I want my own hand built frame
LOL.
Thanks for the laugh to start a sunny Saturday morning.
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Old 08-28-06, 10:59 AM   #17
gbowne1
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Hmm whassofunny?
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