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Shimano 600 tri color downtube shifters question

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Shimano 600 tri color downtube shifters question

Old 06-11-11, 05:38 PM
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scale
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Shimano 600 tri color downtube shifters question

I have a set on a bike i have. The bike is completely dismantled and now that im ready to put the shifters back on, i cant figure them out. THey are indexed/friction but they appear spring loaded which i guess makes sense.

I have a set of suntours and those stop when they are parallel with th downtube. These you can push past that point on the front gear selector almost so much that it is pointed straight down. what is going on here? IM sure i have somthing wrong. Seems like it should be pretty straight forward but it has me confused.
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Old 06-11-11, 06:32 PM
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do you have the shimano boss covers on? are the bosses in the right position? are you talking about both shifters or just the left/front one? the front one is sort of springloaded adn should be installed pointing down. then as you tightedn the screwturn it around and it should stop just above being parrellel to the DT.

if you having trouble with the right/rear post a few pics

when you install the boss covers make sur the fat part of the inner ring points toward the headset. it is about 10:00 on this pic

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Old 06-11-11, 06:40 PM
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There's a spacer, that you must have if you got them on(?), with a little tab on the outward facing side, this tab needs to be parallel to the down tube and pointed up/toward the head tube. When in your highest gear on the rear shifter, that shifter should be parallel with the DT and only move back/toward you (when seated).
The front shifter has an offset that allows the lever to sit slightly above the DT, theoretically to make it easier to grab. It is spring loaded. When you first put it on, it's pointed down toward the front hub, rotate it up going towards the seat until it stops and then tighten the D ring to secure it.
Sounds like you may have the front spacer pointed back toward the bottom bracket (?).

edit: BG beat me to it AND with pictures.

Last edited by MalcolmsFrejus; 06-11-11 at 06:41 PM. Reason: Day late and a dollar short
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Old 06-12-11, 09:02 AM
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well after messing with it a bit....it appears to only affect the front shifter on the left side. THe rear is fine. The front one works although you can turn it past the "paralell with the down tube" postion which seems odd.

THe groove in the spacer is lined up as it should be (meaning the first bit that goes on the frame boss is pointed the right way because it is keyed and it can only go on in one poisition. THe spring is preloaded a bit. ALthough i must still have somthing incorrect.

IT appears to function fine between the 2 front rings....no over throw or anything yet the shifter can be turned this extra amount. THis side appears to be friction only where as the rear is indexed.

Thanks for the help.
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Old 06-12-11, 03:34 PM
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then I think you either mounted it wrong or it is broken. when first installed it, (the shifter) it should be pointing down. after you tighten it down most of the wasy you push it tot he rest position just above parrellel to the FT.
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Old 06-20-11, 07:19 PM
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odd...

i pulled it back apart tonight. i made sure that the tab was up toward the headtube.....and it is. I have to start with the lever pointing downward because that is the only way it will fit on. As i lift it ...it comes to a dead stop when it is in line with the downtube. IT wont turn any farther. It is almost like it is under spring tension and i have to crank it up before placing it on the post. THe problem is i dont know how to turn the thing and hold it there while placing it on the post.
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Old 06-20-11, 08:06 PM
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well i just had another really long stare at it and the only way it goes together and pulls the cable to move the fd is to install it so the tab faces the bb. This side must be broken in some way.....perhaps the indexing....who knows. It is friction only at this point and it turns past paralell with the down tube. I guess who cares. IT works...and shifts smoothly. TIme to stop farting with it and start riding it.
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Old 06-21-11, 04:50 AM
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https://techdocs.shimano.com/media/te...9830612533.pdf
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Old 06-21-11, 06:43 AM
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After mounting it on the boss with the tab facing the headtube, you rotate the shifter counter-clockwise to wind up the built in spring. The lever should come to a stop slightly elevated from parallel with the downtube. Tighten up the mounting screw so the spring doesn't move the lever back up. This lever is not indexed. It is a "retrofriction" design. The spring helps you shift up to the large ring and resists you shifting to the lower ring. The idea is to equalize the force needed to move the lever in each direction.

Edit: I see that the tech document posted by OndrjP_SK explains this already.
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Old 06-21-11, 07:08 AM
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Well, you have all of the directions. The lever should come to it's stop about 10 degrees CW of parallel with the downtube, otherwise the shift cable can become excessively loose when shifted to the inner chainring.

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Old 08-30-18, 08:44 AM
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Thanks a bunch!

Life saver! Thanks for the info on how to mount the left shifter lever! !!
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Old 08-30-18, 09:35 AM
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Originally Posted by scale View Post
TIme to stop farting with it and start riding it.
where's the fun in that actually good advice, one thing the Clunker challenge has taught me is riding a bike for more than just a short shakedown cruise really gives time to identify all the tweaks/upgrades/fixes it needs. I may be guilty of over-wrenching and under-riding.
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Old 08-30-18, 05:32 PM
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I've been briefly flummoxed by these shifters more than once myself, but always got it right eventually.

Also this reminds me of a pair of oddly 5-speed indexed Ultegra bar-end levers I found for a great price after the seller admitted something wasn't right with them. I bought them actually planning to run five speeds, but later discovered the lever was mounted on the "pod" 90-degrees off from where the boss was supposed to be positioned.
They turned out to be nine-speed.
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Old 08-30-18, 08:33 PM
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The spring-assist and not-parallel-to-the-down-tube is a high-end Shimano down tube (left) lever feature. Dura-Ace and 600 (6400-era) at the very least, sometimes 105. It confused me at first, but then I read up and it made sense.
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Old 08-31-18, 02:40 PM
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Originally Posted by RiddleOfSteel View Post
The spring-assist and not-parallel-to-the-down-tube is a high-end Shimano down tube (left) lever feature. Dura-Ace and 600 (6400-era) at the very least, sometimes 105. It confused me at first, but then I read up and it made sense.
I'm so smitten by the ease of use and installation of the DA7700 and DA7800/7900 down tube shifters, I even figured out how to mount them on Cannondales, Kleins, and piggy-back mounts where you can't "rotate them against the spring" the 270-degrees needed.

Definitely made sense to me after I figured it out.
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