Weird noise from the rear end

1738 Views 7 Replies 5 Participants Last post by xTheEc0, 9 mo ago

Kenkong

Discussion Starter · May 10, 2022

So I just picked up an r7 not too long ago and right now I have a little over 120 miles on it. My concern is on deceleration (not twisting the throttle at all) it makes a weird noise that I believe is in the rear end of the motorcycle as like when you put a playing card between the wheel on a regular bike and it makes that sounds, if that makes sense. My question is what could be the cause of that sound or is it because the bike still has to break in? Also when starting the motorcycle the abs light is on until I start moving then it goes away. Is that normal too.
TIA

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xTheEc0

· #2 · May 10, 2022

ABS light is normal, it turns off after it does some self test or whatever, which is at 12kmh/7mph ish (whatever is the 'default' no throttle speed in first gear)

The noise on decel could be loose chain.
Last weekend buddy ridding besides me also noticed noise
We even did silent checks where i would clutch in and turn off engine to listen.
Gone after tensioning the chain a little
Per spec its supposed to be 45~50mm iirc, mine was 65mm ish.

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Jtmoat123

· #3 · May 12, 2022

Kenkong said:
So I just picked up an r7 not too long ago and right now I have a little over 120 miles on it. My concern is on deceleration (not twisting the throttle at all) it makes a weird noise that I believe is in the rear end of the motorcycle as like when you put a playing card between the wheel on a regular bike and it makes that sounds, if that makes sense. My question is what could be the cause of that sound or is it because the bike still has to break in? Also when starting the motorcycle the abs light is on until I start moving then it goes away. Is that normal too.
TIA

I had the same issue. It was my chain. After the chain was tightened I have not heard anything!

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Pocket-Rocket

· #4 · May 12, 2022

Jtmoat123 said:
I had the same issue. It was my chain. After the chain was tightened I have not heard anything!

Glad to hear things have been going well with your R7 since @Jtmoat123! How long have you had your bike for?

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Pocket-Rocket

· #5 · May 12, 2022

Have you tried tightening the belt to see if that helps @Kenkong?

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Jtmoat123

· #6 · May 12, 2022

Pocket-Rocket said:
Glad to hear things have been going well with your R7 since @Jtmoat123! How long have you had your bike for?

I’ve had it since November. I have alittle over 400 miles as it just started to warm up in Michigan.

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Ei900

· #7 · 9 mo ago

Is it common for the chain to loosen after a couple of hundred miles? I have around 220 miles and noticed a sound today as well. I take a look and the chain has too much slack.

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xTheEc0

· #8 · 9 mo ago

If the chain wouldn't randomly get longer we wouldn't need to adjust it : )

Mine needs adjusting quite often since I like doing clutch up wheelies which stresses the chain (sudden power) and constantly stretches it out.
But even with such abuse, if it's adequately cleaned and lubed it will not just snap in half after reaching 'maximum length' or whatever.

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