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How to tune internal gears?
#1
Hallo,

I have a bike with internal gears:
5 speed Sachs Torpedo Pentasport.

It has two adjustment cables from both sides of the rare wheel.
I just can't get it out, how to use them to tune the gears.

Does anyone have the same or similar gear hub and can share the knowledge?
  Reply
#2
Interesting, I've never seen one of these. It appears most online information is in German only. If you can't speak German or work with a google translation you might try emailing Sachs/SRAM (http://www.sram.com) directly to see if they have any materials on this.
  Reply
#3
http://www.ureader.de/message/684679.aspx Wrote:So geht's bei der zweiseiligen Pentasport:
1. Zur Einstellung den 4. Gang einlegen und Pedalarm dann 1-2 mal
durchdrehen, damit der Gang einrastet.
2. Dann an beiden Seilzgen die Fixierhlse gerade so weit aufschieben,
da das Zugkettchen straff ist. Das Zugkettchen darf dabei *nicht*
herausgezogen werden.

Anschlieend die Kontrolle rechtes Zugseil:
- 2. Gang einlegen und Pedalarm 1-2 mal durchdrehen
- Die Einstellung des rechten Zugkettchens ist zu lose, wenn es sich von
Hand noch weiter aus der Kettenleitmutter herausziehen lt.
- Die Einstellung des rechten Zugkettchens ist zu stramm, wenn der
Schalthebel nur schwer in Position 2 zu bringen ist
Ggf. rechtes Zugseil dann nochmal einstellen

Und die Kontrolle linkes Zugseil:
- 1. Gang einlegen und Pedalarm 1-2 mal durchdrehen
Falls das Zugseil zu lose oder zu stramm ist (siehe rechts Zugseil),
dann das linke Zugseil nochmal einstellen
1. Select fourth gear, turn crank 2-3 times to complete gear change.
2. move bushing on both cables until both chains are just taut, chains must not be pulled out!

control of right cable
- select 2nd gear and turn crank twice
- if you have difficulty to select 2nd gear, cable is too tight. If you can pull the chain a bit further out of the gear it is too lose.

left cable
- select first gear, see description right cable

If you find something else, please post, I will tr to help
  Reply
#4
Thanks,

I will try those recommendations.

Regards
  Reply


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