Check the front lay shaft bearing for play/noise. These can and do wear/dry out mainly due to overtightening the drive chain.It's also possible one or more of the gearbox bearings has had it. Ignore the the brake caliper comment. They will just bind or tick, excessive brake dust, you'll feel resistance/loss of performance and possible blueing of the disc/s in extreme cases. What you're describing is drive/transmission issues. Check the wheel alignment, the rear sprocket carrier bearing, rear wheel bearings these can dry out with no play. Also check every link in the chain, then check swing arm and shock linkages.
Ignore the the brake caliper comment. They will just bind or tick, excessive brake dust, you'll feel resistance/loss of performance and possible blueing of the disc/s in extreme cases. What you're describing is drive/transmission issues.
Quote from: Gnasher on 22 August 2023, 09:11:32 amIgnore the the brake caliper comment. They will just bind or tick, excessive brake dust, you'll feel resistance/loss of performance and possible blueing of the disc/s in extreme cases. What you're describing is drive/transmission issues. (for now) as the OP has said at a constant speed the noise isn't there , just when accelerating. If it was the calliper the noise would potentially be different as speed increases but wouldn't stop when you stop accelerating. As the noise appears to only be there as speed is being increased, you need to look at things that are only affected by increased load. Chain, sprockets, output shafts and alignment of all of these things (wheel alignment). Looking at brakes would be VERY low on the list.
Just a suggestion, but needs care and two people when doing it.Try simulating acceleration with the bike of the centre stand foot on the brake and bike in whatever gear it sounds worse in open the throttle a bit that will put pressure on the bearing and allow you to locate wher the noise is coming from.Anytime i have had to do this it is on a lift tied down