Banging Derailleur

[calabash]

HELP! Just replaced the derailleur on my mtb. It is rattling and hitting my frame when I go over uneven terrain. Any suggestions would be greatly appreciated.

[word]

Waiting for the comments on the title of this one....

[TNT1]

 

Any suggestions would be greatly appreciated.

 

On this website? That's like a red G-string to a bull.

 

[word]

Bob, I knew you would be first to comment but your comment disappoints. I was expecting something more risque.

[bustthesickness]

are you sure it's not the chain that is too loose and hitting the frame? If you put the chain on the biggest front blade, and the biggest cog on the rear cassette, does the sound still happen? If not, it's the chain too loose. Take out 4 links and see then.

[TNT1]

I'm trying to behave after that poll went up about who stirs the most, and I was nominated...

[Piernas Flacas]

Is it the front or the rear that is banging?

[calabash]

thanks guys!

[Daxiet]

Considering the query is vague, I suspect the only derailleur that could possibly "bang" would be the rear one. There is a screw on the back of the derailleur on the where the DR is able to swing forward or back. By tightening this screw you increase the tension on the spring that forces the DR back. Perhaps it is too loose, or perhaps your chain is indeed too long,  which could only have happened had you change to a short cage rear DR from a Long Cage.

 

[calabash]

Thanks, it is the rear and not the chain that is banging. I actually changed for a short to a long cage. This could explain it. Gonna try that skrew.

[fandacious]

 

I'm trying to behave after that poll went up about who stirs the most' date=' and I was nominated...

[/quote']

 

its just a nomination. in order to be awarded the title, you'll need to keep up the good work.