Question about Cycling

Open Question

Hi, I have a Raleigh Kalahari mountain bike with

Hi, I have a Raleigh Kalahari mountain bike (UK Model) with Shimano 21 speed derailleur, with Altus C10 trigger shifters which are beneath the handle bars. For health reasons I need to use it to get fit, but on trying it, the screw on the bottom of the trigger for the rear cog set dropped out and while I have put a new one in, I can only change by 2 or 3 lowest cogs. When I adjusted the tension of the cable I could get the top 3, but not the range of 7. It seems as if the trigger itself is faulty, only moving the cable a little.. Can I get into it and see what the problem is, in which case do you have a tech drawing, or does it have to be replace? What do they cost to replace?
Grateful for your reply.



Posted by on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 6 Answers

SOURCE: I have a Shimano Deore XT rear derailleur. At the

The screws on the derailleur set the positional limits for the derailleur; if your description is accurate and it is always one position behind until the middle gears, I would guess it is not these screws causing the problem, but rather the cable tension is a little to low. There is a typically a knurled knob on the back of the derailleur that can adjust cable tension. Unscrewing it a little will tighten the cable. There may be other adjusters if you follow the cable up to the shifter. Try changing it in small increments (eg 1/8 to 1/4 turns) and go through shifts from high to low before determining if it is helping or not.

Posted on Jun 30, 2009

  • 1138 Answers

SOURCE: Adjust Shimano Acera back derailleur

There is a limit screw on the body of the derailleur that you have to back out slightly. You can tell which one of the two it is by watching carefully as you adjust it. It takes a phillips screwdriver.

Posted on Aug 03, 2009

  • 60 Answers

SOURCE: mountain bike advise

sounds like a pretty good bike for what you will be using it for

Posted on Oct 22, 2009

Testimonial: "Hi prncdrkns, Thanks alot for the advise buddy, i will get this one cheers i appreciate it alot!!"

  • 484 Answers

SOURCE: Need to replace a Shimano 7 speed SIS rear

Go to for pretty great step-by-step instructions with diagrams and pictures on the procedure. It would be easier to see than to try to tell.

i hope this helps you out,

Posted on Oct 23, 2009

  • 2334 Answers

SOURCE: my mountain bike will not

The problem lies in cable. Check out what make of front derailleur (cog shifter) you have (Shimano, SRAM, e.t.c.). Then visit the manufacturers website and check out for technical info and settings.

Posted on Jun 02, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How do I install a mountain bike (21 speed) roller/changer

If you can figure out what it's really called look it up at

Go here for a great resource for procedures...

Point to the bike and it will highlight a link.

May 27, 2011 | Shimano Deore LX Mountain Bike Front...

1 Answer

Where can i get replacement front derailleur? or specs sheet ?thanks peter

The documentation I found says the Front derailleur is a Falcon MF 31 T.

But there's more that needs to be known about it.

It appears to be a Top Pull, meaning the cable approaches it from above and the 31T means it works with a front chainring of 31 teeth.

We need to determine the exact outside diameter (to the .1 mm) of the seat tube as the clamp must be precisely fitted. Typical measurements look like 28.6 mm or 31-1/8".

Once you know that you can go anywhere (eBay, for example) and order the same pos derailleur or upgrade to a Shimano Deore or above mountain derailleur.

Google this but keep in mind you still need to specify the clamp size
"shimano front derailleur top pull 31"

Feb 20, 2011 | GMC Topkick Dualsuspension Mountain Bike...

1 Answer

I bought a mountain bike with Shimano Altus gears over the net with most of the assembly in place. Have indexed the rear gears which work fine. Did the same for the front deraileur works changing up but...

There are a couple of possible problems. You can try backing off the cable tension a little bit at the shifter and running back and forth through the gears adjusting as you go till it hits 2nd coming down.You can also try backing off the High limit screw on the derailleur. This will allow the shift to start a little farther from the bike hopefully hit 2nd. Hope this helps.

Sep 12, 2010 | Mountain Shimano Altus Front Bike...

1 Answer

Mountain bike advise

sounds like a pretty good bike for what you will be using it for

Oct 22, 2009 | Cycling

1 Answer

Where can I find a drawing of a 21 speed 26" mongoose duel supp rear deralier so I can see how the cable runs? If it has a Shimano Altus rear derailleur, you can look here: or here:

Oct 16, 2009 | Mongoose Sector 26 Men's Full Suspension...

1 Answer

Need to replace a Shimano 7 speed SIS rear derailleur for a Quest Omega 21 speed mountain bike

Go to for pretty great step-by-step instructions with diagrams and pictures on the procedure. It would be easier to see than to try to tell.

i hope this helps you out,

Sep 27, 2009 | Shimano Cycling

Not finding what you are looking for?
Cycling Logo

Related Topics:

345 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cycling Experts


Level 3 Expert

80531 Answers

Michial Gueffroy

Level 3 Expert

1138 Answers

Andrew Taylor
Andrew Taylor

Level 3 Expert

20941 Answers

Are you a Cycling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides