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Im talking 'bout the BAD vibrations....

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richie....
Renault 5 Driver



Joined: 20 Oct 2011
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PostPosted: 22:08 - 01 Jan 2012    Post subject: Im talking 'bout the BAD vibrations.... Reply with quote

Well, as you may know, i have a Suzuki GS125 on a T plate with about 13,500 miles.

Its vibrating quite bad, its fine if you go easy, i.e ride proplerly upto 30 in 5th, but if i pull away in first, into second, as the revs get higher, its get worse.

Im starting to think it could be an engine bearing, the vibration feels like its coming from the engine, all the bolts around it are tight and i can feel the vibrations worse from the foot pegs upto the handle bars.

can anyone shed some light over this issue?

im worried about the bike going pop and i rely on it for work.

cheers guyts.
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JoeDougieDoug...
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PostPosted: 22:13 - 01 Jan 2012    Post subject: Reply with quote

You're doing 30mph in 5th gear??

And check the tyre pressure - That can result in bad vibration. Thumbs UpSmile
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richie....
Renault 5 Driver



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PostPosted: 22:17 - 01 Jan 2012    Post subject: Reply with quote

JoeDougieDouglas wrote:
You're doing 30mph in 5th gear??

And check the tyre pressure - That can result in bad vibration. Thumbs UpSmile
yea just cruising lol, aii i will do in the morn, the lad did pump them up with a car pump as i went to take a look, ill try at the garage in the morning.
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richie....
Renault 5 Driver



Joined: 20 Oct 2011
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PostPosted: 22:27 - 01 Jan 2012    Post subject: Reply with quote

hahadumball wrote:
Check the dildo switch is set to off.


ahhhh yes, the dildo switch. i did buy it from a woman....


Wink
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hmmmmm
Two Stroke Sniffer



Joined: 26 Dec 2011
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PostPosted: 23:58 - 01 Jan 2012    Post subject: Reply with quote

Is there timing on these liike the rs/ mitos?? But tyre pressure quick and easy check 1st eliminate that
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JoeDougieDoug...
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PostPosted: 13:22 - 02 Jan 2012    Post subject: Reply with quote

I'm fairly interested to see how this one plays out - Let us know what it was when you find out. Smile
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richie....
Renault 5 Driver



Joined: 20 Oct 2011
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PostPosted: 16:53 - 02 Jan 2012    Post subject: Reply with quote

well ive done the tyres, its helped a bit like (aswell as better handling andmore speed, obviously, waxs only 20PSI in them lol)

as doing the tires, i noticed that the rubber from the air filter to the carb hasnt got a jubilee clip on and its practically come off so obviously, the engine isnt running as it should!

illlet you know what happens when i sort this out later on back at home!
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jimmyRS
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PostPosted: 19:01 - 02 Jan 2012    Post subject: Reply with quote

a loose air filter wouldnt cause these bad vibrations your on about, although definitely fix that.

So the vibrations only happen when you increase rpm? not speed? In which case why bother with checking the tyres and wheel bearings? And bad timing also wouldn't make it vibrate like crazy; just run shit.

I know youve said you've checked all engine mounts and they're secure, but check where the mounts are actually welded onto the frame/cradle, no cracks or splits in them? I had a similar problem and that was the cause of it.

No knocking from the bottom end at all? Chain tensioned correctly? Sprockets and chain aren't worn?

Smile
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Mikey3
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PostPosted: 21:52 - 02 Jan 2012    Post subject: Reply with quote

jimmyRS wrote:
a loose air filter wouldnt cause these bad vibrations your on about, although definitely fix that.

In which case why bother with checking the tyres and wheel bearings?

No knocking from the bottom end at all? Chain tensioned correctly? Sprockets and chain aren't worn?

Smile


always good to do some preventive maintenance on the tyres and bearings anyway Wink if he's not sure what they are it might be worth finding out, before another vibrative post :p
and if its the chain and sprockets revving wouldnt have any effect, but still worth checking :p
crankshaft/big end bearings... perhaps? higher the revs the more the vibration? and not speed related... guess its possible :/
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hadden
Trackday Trickster



Joined: 01 Nov 2011
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PostPosted: 22:42 - 02 Jan 2012    Post subject: Reply with quote

hmmmmm wrote:
Is there timing on these liike the rs/ mitos?? But tyre pressure quick and easy check 1st eliminate that


i wanted a mechanic to rebuild my rs 125 engine just because i didn't want to fuck about with timing and he told me "its a 2 stroke.they don't have timing" so im in the process of doing it myself.please don't tel me there is!!!!
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jimmyRS
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PostPosted: 22:52 - 02 Jan 2012    Post subject: Reply with quote

mredhead wrote:

always good to do some preventive maintenance on the tyres and bearings anyway Wink if he's not sure what they are it might be worth finding out, before another vibrative post :p

true dat
mredhead wrote:

and if its the chain and sprockets revving wouldnt have any effect, but still worth checking :p

Sprocket attached to drive shaft in bottom end, if thats vibrating alot more than likely the chain'll be worn a fair bit more running round that front sprocket Razz
mredhead wrote:

crankshaft/big end bearings... perhaps? higher the revs the more the vibration? and not speed related... guess its possible :/

ditto
hadden wrote:

i wanted a mechanic to rebuild my rs 125 engine just because i didn't want to fuck about with timing and he told me "its a 2 stroke.they don't have timing" so im in the process of doing it myself.please don't tel me there is!!!!

hate to be the bearer of bad news: there is.
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Mikey3
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PostPosted: 23:07 - 02 Jan 2012    Post subject: Reply with quote

mredhead wrote:

and if its the chain and sprockets revving wouldnt have any effect, but still worth checking :p

Sprocket attached to drive shaft in bottom end, if thats vibrating alot more than likely the chain'll be worn a fair bit more running round that front sprocket Razz
[quote="mredhead"]

its the 3rd shaft after the crank, input shaft, and the output shaft which connects to the sprocket, which would be the gearbox, which doesn't reciprocate as much as spins, so the changing of direction which causes vibration isn't there.
this is reminding me of our facebook chat earlier :p
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jimmyRS
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PostPosted: 23:10 - 02 Jan 2012    Post subject: Reply with quote

lol nout to do with input/output etc. If the engines vibrating enough to send it all the way through the frame to the pegs and up to the bars then it'll definitely be putting it through the sprocket/chain

n yeah aha ;D
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Mikey3
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PostPosted: 23:14 - 02 Jan 2012    Post subject: Reply with quote

jimmyRS wrote:
lol nout to do with input/output etc. If the engines vibrating enough to send it all the way through the frame to the pegs and up to the bars then it'll definitely be putting it through the sprocket/chain

n yeah aha ;D


But isn't that an effect more than a cause? Wink
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jimmyRS
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PostPosted: 23:17 - 02 Jan 2012    Post subject: Reply with quote

course, but what im gettin at is if that chains worn and slipping around on the sprocket, or vice versa, thats not gonna help at all with vibrations Razz
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Mikey3
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PostPosted: 23:34 - 02 Jan 2012    Post subject: Reply with quote

jimmyRS wrote:
course, but what im gettin at is if that chains worn and slipping around on the sprocket, or vice versa, thats not gonna help at all with vibrations Razz


true... but perhaps very minor.
i shall dub this: productive bickering Wink
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'Motorcycling is about what you do; not about what you own, or how much you spend on it'
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richie....
Renault 5 Driver



Joined: 20 Oct 2011
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PostPosted: 23:36 - 02 Jan 2012    Post subject: Reply with quote

Well, carbs done, there a pain aint they?

Anways, we may have an answer.....the bikes a bodge.

Guy i bought it off said it had been powder coated but its been slung back together, random size bolts, tank having NO bolts in it, rubbers around fittings missing......

Also, the chain and sprokets look past it.

Are they easy to do, i mean i know how to do it, ot just getting the rear wheel true again...
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jimmyRS
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PostPosted: 23:36 - 02 Jan 2012    Post subject: Reply with quote

mredhead wrote:
jimmyRS wrote:
course, but what im gettin at is if that chains worn and slipping around on the sprocket, or vice versa, thats not gonna help at all with vibrations Razz


true... but perhaps very minor.
i shall dub this: productive bickering Wink


yeah back down bitch

I'm smart, you're dumb; I'm big, you're little; I'm right, you're wrong, and there's nothing you can do about it.

much love mike Wink

richie.... wrote:
Well, carbs done, there a pain aint they?

Anways, we may have an answer.....the bikes a bodge.

Guy i bought it off said it had been powder coated but its been slung back together, random size bolts, tank having NO bolts in it, rubbers around fittings missing......

Also, the chain and sprokets look past it.

Are they easy to do, i mean i know how to do it, ot just getting the rear wheel true again...


getting the rear wheel aligned is piece of piss, various methods of doing it but refer to your manual for that bike for their preffered step-by-step Razz

and the fact its missing rubber on the fittings would definitely be a problem. Good luck with fixing it Smile
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richie....
Renault 5 Driver



Joined: 20 Oct 2011
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PostPosted: 23:49 - 02 Jan 2012    Post subject: Reply with quote

cheers, need to het haynes first, could do with cables aswell, rear fairing is smahed and the headlights a mess, yeah £560 gone good lol.

I bought it to my test to sell on but feel its far too tatty to sell on for decent money back....
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jimmyRS
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PostPosted: 23:52 - 02 Jan 2012    Post subject: Reply with quote

nah it'll be worth it in the long run Smile good to get to know the bike and do a bit of problem solving, itll help down the line Razz

as for getting your money back, maybe not, just stick to a tight budget and if you're not in a hurry to sell it you should atleast break even Smile

reminds me when i picked up my rs50 project bike, the guy wanted 500 initially, ended up riding it away for £190 aha! But its definitely been a project and a half, and still is Razz
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Mikey3
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PostPosted: 23:54 - 02 Jan 2012    Post subject: Reply with quote

richie.... wrote:


Guy i bought it off said it had been powder coated but its been slung back together, random size bolts, tank having NO bolts in it, rubbers around fittings missing......
.


that would look like we have a winner!


and jamie - see the following
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'99 SV650 Streetfighter Project - mid build
'Motorcycling is about what you do; not about what you own, or how much you spend on it'
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jimmyRS
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PostPosted: 00:05 - 03 Jan 2012    Post subject: Reply with quote

LOL, love that man

heres one for you Wink

much love
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Mikey3
World Chat Champion



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PostPosted: 00:11 - 03 Jan 2012    Post subject: Reply with quote

jimmyRS wrote:

I'm smart, you're dumb; I'm big, you're little; I'm right, you're wrong, and there's nothing you can do about it.

much love mike


i don't beleive i'm the one with the ego problem Wink

we should stop now...
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'99 SV650 Streetfighter Project - mid build
'Motorcycling is about what you do; not about what you own, or how much you spend on it'
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