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Chain Slap....!!!


dalem44
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Sorry to bring up posts that are 5 years old but I thought that it's easier than starting a new topic.

My question is this: my mtb gets terrible chain slap when riding over bumpy terrain! Could this be that the chain is too long? How do I check?

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Helicopter tape is the monkeys nuts.

That velcro also sock does well.

A good old tube is very "authentic".

I have also successfully used an old mtb tyre with the bead cut off and cable tied to the stays. Works well and is very good at reducing the noise caused when it slaps.

 

Best solution is naturally to get a ss .... Until you ride a proper ss frame (no tensioners to take up chain slack) will you be able to appreciate how silent it is oon the single track and how noisy a conventional geared bike is.

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Hey just saying.

 

Try the old tyre...it ads a bit of spunk vs the obvious tube option.

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My question is this: my mtb gets terrible chain slap when riding over bumpy terrain!

 

HTFU and ride in your big blade. ;)

 

Chances of chain slap in your granny blade is much higher.

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It is the clear 3m tape referred to by another poster. They use it to protect our cover parts of propellers or helicopter blades.

 

Will find out more later re the specifics and post again.

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Most offroad motorcycle shops also sell a clear 3m protective tape, tough and works well.

 

I know Cayenne Honda at Kyalami had it in stock.

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Sorry to bring up posts that are 5 years old but I thought that it's easier than starting a new topic.

My question is this: my mtb gets terrible chain slap when riding over bumpy terrain! Could this be that the chain is too long? How do I check?

I think you need to put the chain on the big ring up front and the largest cog at the back and then check the position of the rear derailer cage, the derailer cage should be hanging down relatively straight. Not sure if thats right but thats how I do it and have no issues. I use a inner tube wrapped around the chain stay and that is covered with a chainslap sock to neaten it off.

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It is the clear 3m tape referred to by another poster. They use it to protect our cover parts of propellers or helicopter blades.

 

Will find out more later re the specifics and post again.

Most offroad motorcycle shops also sell a clear 3m protective tape, tough and works well.

 

I know Cayenne Honda at Kyalami had it in stock.

 

More details and pricing, please, shot, fellas.

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I went from X9 to XTR 2011 RD , chain slap virtually disappeared and I like jumping things and getting a little air .

Its the standard XTR 2011 med cage shadow , I have to absolutely slam the bike , ie land really badly after getting some air before I get any slap. I was pleasantly surprised when I discovered that - chain slap is miff , sometimes it sounds like you breaking something.

 

The latest XTR with the clutch must have no chain slap whatsoever

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http://www.vikingtapes.co.uk/Aerospace/3M_Helicopter_Tapes/

http://www.mtbrider.com/showthread.php?18279-helicopter-tape

http://singletrackworld.com/forum/topic/heli-tape-is-it-worth-it

http://www.tweekscycles.com/Product.do?method=view&n=3553&p=16495&c=215&utm_source=Google&utm_medium=Base&utm_campaign=Frame%20Protection

 

http://www.tweekscycles.com/oncirrus/3/images/brand/column/3m.jpg 3M Leading Edge (Helicopter) Tape

AEH86741HS £13.16

You Save 20% SRP £16.45

http://www.tweekscycles.com/oncirrus/system/trans.png

http://www.tweekscycles.com/oncirrus/3/images/product/enlarge/pit_leading-edge-tape.jpg

Description

 

Genuine 3M Helicopter Tape, don't be fooled by cheap imitations! Thanks to genuine 3M adhesive this stuff stays stuck and doesn't lift or peel.

Super tough, adhesive clear polyurethane tape produced by 3M. The ultimate in leading edge tape.

Often referred to as 'helicopter tape' this super tough tape was developed to protect the leading edges of helicopter blades.

Size: 4" wide. Sold Per Metre.

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If you want to prevent chain slap another solution could be a small chain guide:

http://www.bikeradar.com/mtb/gear/category/components/chain-guide/product/review-bionicon-v02-chainguide-12-46125

 

To protect the frame with something that you can colour code, why not use old (or new) ESI Silicone grips or something similar. Just cut them open on the one side, wrap around and fasten with cable ties. Ta daaaah! Looks good, is light and comes in lots of different colours.

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I think you need to put the chain on the big ring up front and the largest cog at the back and then check the position of the rear derailer cage, the derailer cage should be hanging down relatively straight. Not sure if thats right but thats how I do it and have no issues. I use a inner tube wrapped around the chain stay and that is covered with a chainslap sock to neaten it off.

 

The rule of thumb is to break the chain, route it over the big/big combo bypassing the derailleurs. Measure where the chain joins and add one link. On FS bikes you may have to add a bit more length due to chain growth through the travel range, but this is a good starting point.

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