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Posted

No diffs for the user but some issues for the mechanic who has to hou kop, when tuning RR. I think it is a gimmick. Buy whatever is cheapest or more readily available at present and forget about it.

Posted

Would you be asking about dual control using RR or triggers using regular?

 

Once you get the hang of the derailleur (RR) its pretty much the same but can be a bit more succeptible to cable wear. I think it might be beacuse the spring has to pull it up onto a bigger sprocket.

 

The shifter is a very personal thing and you will either love it or hate it. I love mine!
Posted

At the moment I am using the rapid rise model. Once you get used to the idea that up is down and down is up, or was that up..., they are easy to use. I tried going back to the "normal" derraileur, but that messed up my auto pilot. So now I am a rapid rise man.

It just feels normal to press the big leaver (both sides) to go faster and the smaller one to get the cadence up for that climb.

Buy whatever you like or can find. But stay with the one you choose.
Posted

No diffs for the user but some issues for the mechanic who has to hou kop' date=' when tuning RR.?I think it is a gimmick. Buy whatever is cheapest or more readily available at present and forget about it.

 

[/quote']

 

 

 

I've been riding and tuning a rapid rise derailleur for more than a year now and I still haven't got my head around it. I'm forever turning the damn screw in the wrong direction and getting my mind in a muddle over what should really be a simple problem smiley9.gif smiley9.gif

Posted

Tuning a rapid rise derailleur is easy. It's low normal so tune it in the low gear. Then there is nothing to remember.

 

Of high normal and Low normal I prefer Low normal (Rapid Rise).

The low normal position makes for easy down shifts and because you not forcing the chain, but rather have to wait for the shift gate to lift the chain, the chain tends to last longer. Forced downshfts are responsible for lots of broken chains.

the first derailleurs were low normal. Then someone changed it.

All rear derailleurs should be low normal. Whether fitted to a Rapid Fire trigger or a Dual Controlm I prefered the Low Normal.
Posted

setting up a Low normal derailleur is a piece of cake:

 

1) fit it to the bike.

2) set the limit screws

3) connect the rear derailleur cable to the derailleur while the derailleur is in rest position under the largest sprocket and the shifter is in the Low gear position.

4) tighten the cable bolt and take up the slack with the barrel adjuster at either the shifter or rear derailleur and shifter if its the older RD-M952 Rapid RISE.

5) Up shift and check visiually if the deraileur is lining upunder the sprockets.

6) If yes for 5), then fit chain.

7) If no then there is slack inthe housing / housing end cap interface. Ensure all end caps are seated properly on the housing.

8) repeat 5)

9) repeat 6)

 

go ride, feel it

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