My bike is new like almost out of the factory... ...with 90,000 km's on the clock...
The rear part is dancing samba when I corner and I was wondering IF anyone has ever changed those two very big rubber bushes at the base of engine that mount on the frame.
IF anyone has, can you please tell how hard this process is and IF you saw any difference after installing new ones.
Well funny you should mention!
Two days ago I felt the bike was getting a ‘little loose’ upon investigation I too thought it was these bushes were wearing out, but it was the two M10 nuts holding the rubber mountings that had come loose! So a quick tighten and then an additional half nut has cured the problem!
Mine are super tightly screwed in...
Still I suspect that this behaviour can be also a combined situation coming from worn front suspension bushes AND engine rubber bushes.
have you taken a good look at your shocks?
Shocks are relatively new YSS gas/oil hybrid for Honda SH300.
Dirt cheap ones for 120 euros the set, so yes maybe these aren't as good as they should.
Makes sense to swap when I have time (ie after I die!!)
from your description of the ride/handling I would be looking at a completely shot shock and here a hand test has some value.
Clearly a shock that fails a hand test is trash. Any shock that's leaking oil is also trash.
let us know when you pin down the cause.
I checked the shocks, rock solid...
if not that then only issues really are with the nylon bushes inserted into the sub frame tube or engine bearing mounts maybe
I didn't even know these nylon bushes exist.
Posibly those need to be renewed anyway.
Samba... de Janeiro!
i presume rock solid in the sense of integrity and not seized up!
Rock solid... like my pride of owning a C1!
Not seized up!
Have you had someone hold the bike steady while you try to sway the back end?
Then you can find if there is a loose bush, rather than all this randomness!
Am assuming you’ve pumped tyres up and ensured front shock is firm (so you can’t push handlebars down to the ground easily)
Since after 92000 km's my C1 is dreadfully worse in handling than my other C1 with 20000 km's I try to make a list of candidates:
1) Front wheel bearings
2) Rubber bushes on top of forks
3) Steering wheel bearings
4) Front shock absorber
5) Front shock absorber rubber bushes
6) White nylon bushes
5) Rubber engine bushes
6) Rubber bushes at black exhaust plate
7) Rear shock absorbers
8) Rear shock absorber rubber bushes
9) Rear wheel bearings
10) Top hat spacer
11) Uneven oil level in forks
12) Tyres and tyre pressure
Am I missing something?!?
Today I checked the steering wheel play.
It's loose (a little) both front/back and left/right directions.
It's weird because I changed the 6002 bearings 8000 km's ago. Maybe the bridge (black steel) needs replacement?
I had the bright idea to swap (for testing purposes) the engine bushes of my low mileage C1 with the one having 92000 km's.
I easily unscrewed the the right M10 screw (H6 allen key) but I couldn't in any way unscrew the left one.
I heated it with a heat gun and also applied WD40. I tried many different H6 sockets but no luck at all.
I took the plunge and replaced the engine rubber bushes with some equivalent ones and not the OEM ones.
Cost around 25 euros for both.
Substantial improvement, real metamorphosis.
The old ones with 93000 km's on were obviously deformed and one had a bruise too.
I suspect that around 60-70.000 km's it makes sense to replace them.
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