Rattle on right side exhaust / battery

[CB1100i_imp]

Hey guys I have a couple questions hopefully someone has some sort of input.

I noticed last year I started to get some sort of rattle within the right side of my exhaust. I first noticed this after a good 90 minute ride. Came home wanted to hear the bike after a longer ride so revved to around 3000ish rpm. I can’t remember if it’s the acceleration or deceleration that caused some sort of rattle on the right side alone.

First thought was perhaps something got in there, was put in there, baffle is wearing down, or even broken. I tightened up my clamps / heat shields but still the problem persists.

Spoke with a mechanic while buying fork oil for a different bike, he said start by taking the mufflers off. If the sound continues then you know it’s not the muffler. I will be doing this hopefully in a few here. Thought my battery was good and charged but couldn’t get the bike to start.

After fully charging it and testing with a multimeter I’m getting a reading of 12.39 which is I remember correctly is a battery on its way out. I did purchase the OEM yausa? Been a few years since I’ve had it but now they’re around 160-200.

Anyone have any battery recommendations? Or would you even change the battery yet? I know everyone has their own opinion. Looking for something fresh. Buy one from farm and fleet, get OEM, go Amazon. Too much to choose from.

What are your thoughts on the exhaust? I noticed I can’t remove the baffles? I have no idea what the next step is besides getting it started and checking to see if the noise happens when cold.

Side note - I have yet to go for a ride this year. Battery was apparently too dead to start so took it inside for a charge before putting on the bike.
Apologies for the long winded post. Hoping to get some help here

[pekingduck]

What year/model do you have? The rattle could be a loose/broken baffle weld or catalytic convertor, or broken heat shield. If you could duplicate the noise by riding it and getting it hot, put it on the centerstand, then duplicate it by running it up and down in gear.

Use a mechanics stethescope, or a long screwdriver with your ear to the handle end, the tip moving along the exhaust.

As far as the battery, it looks like the OEM Yuasa and the Yuasa replacement are lasting about 5-6 years, about average. I have found that the cheaper Amazon batteries work as well, and cost a fraction of Yuasa price. And no real advantage to be had from lithium ion.

[peterbaron]

@cb1100i ..."I noticed last year I started to get some sort of rattle within the right side of my exhaust...... mufflers....."

Based on the above info, I assume you either have EX or DLX
Using a rag, you can also block one muffler and then the other for a few seconds and listen to see if the noise changes. Also, is there any difference when the engine is cold vs hot, lower or highr engine rpm??

@pekingduck......mechanics stethescope, or a long screwdriver with your ear to the handle end, the tip moving along the exhaust.. This is an excellent and professional method for determining the source of noise.

[Cormanus]

"Mummy, what's that man doing with a screwdriver in his ear?"

[CB1100i_imp]

"Mummy, what's that man doing with a screwdriver in his ear?"

? - edit: went over my head Jesus Christ… lol

@cb1100i ..."I noticed last year I started to get some sort of rattle within the right side of my exhaust...... mufflers....."

Based on the above info, I assume you either have EX or DLX
Using a rag, you can also block one muffler and then the other for a few seconds and listen to see if the noise changes. Also, is there any difference when the engine is cold vs hot, lower or highr engine rpm??

@pekingduck......mechanics stethescope, or a long screwdriver with your ear to the handle end, the tip moving along the exhaust.. This is an excellent and professional method for determining the source of noise.

My bad forgot to add the details. 2014 dlx with 8.4k miles
Took it for a ride still couldn’t get the sound to come out.
Cold the noise isn’t happening, only when the bike seems to be good and hot (after 90 minutes of riding)
Tried cold up to 4k - noise. Rode for 5 minutes same thing no noise.
Maybe I’m losing my mind.

Took off the mufflers, tried that out too. No noises whatsoever. Tried banging on the muffler to knock anything loose / listen to noises - nothing.

check engine mount bolts, etc. bang on pipe with palm of hand. also might be the center-stand banging on pipe wile riding, make sure rubber stopper is there when its up. 0.02

12.3-12.4 is ok. I got lithium from auto zone for it (NOCO) for not much money, only because they had it in stock, think it was 120? not really a fan but its been flawless so far.

Awesome ty for the recommendation wasn’t sure if lithium’s were alright read in a different post not to use so no clue.
Started the bike ride for 5 minutes tried to start again but nothing. (Was fully charged) Charged again started up several times no issues. Tested the voltage when cranking last night and that’s when it wouldn’t start again. Going to try another crank test today see what happens.

Will do - the only time I’ve noticed rhe noise is after riding a long period, sitting in neutral at home then revving to 3-4k.

What year/model do you have? The rattle could be a loose/broken baffle weld or catalytic convertor, or broken heat shield. If you could duplicate the noise by riding it and getting it hot, put it on the centerstand, then duplicate it by running it up and down in gear.

Use a mechanics stethescope, or a long screwdriver with your ear to the handle end, the tip moving along the exhaust.

As far as the battery, it looks like the OEM Yuasa and the Yuasa replacement are lasting about 5-6 years, about average. I have found that the cheaper Amazon batteries work as well, and cost a fraction of Yuasa price. And no real advantage to be had from lithium ion.

2014 dlx 8400 miles forgot to add of all things.
The rattle isn’t all that bad just kind of annoying knowing that it could make the bike sound like cuss. Took the mufflers off and damn I prefer that so much.
Heat shield are the pieces attached to the muffler/exhaust portion under the engine? The right side was a titch easy to unscrew so we hope that’s it but never really thought that would be the cause due to the 2 sections of rubber in between everything.
I’ll report back after more of a ride now that today is nicer. Gotta throw those mufflers back on

Appreciate all the help. I know it’s not a huge issue but it’s an issue that’s constantly popping up in the back of my mind. Typically like to take care of these annoying issues.
Who knows if this is the issue might just keep the mufflers off and take off the center stand or create a shim of sorts to keep it off the chain