Tyre sliding around under straight line acceleration.

[roboR]

moanthebairns said:

so we had, loose chain, chain lube, shockwaves from the Pompeii eruption, aftermarket levers, dust on the road from halley's comet, brakes binding, bent frame, the glare from the Aurora Borealis glazing the pads....

And basically I'm a noob

[Deranged Granny]

moanthebairns said:

so we had, loose chain, chain lube, shockwaves from the Pompeii eruption, aftermarket levers, dust on the road from halley's comet, brakes binding, bent frame, the glare from the Aurora Borealis glazing the pads....

With the bike being newish and in good nick, it was only ever going to be down to pressures. They make such a massive difference.

[roboR]

Deranged Granny said:

With the bike being newish and in good nick, it was only ever going to be down to pressures. They make such a massive difference.

Yeah. He told me that while it is the recommended pressure it is also the 'max' pressure as on my bike it's the same pressure they recommend for fully laden with a pillion passenger so not ideal.

I've asked about tyre pressures before on another forum and was told to go by the book, which is I guess the 'right' answer to say, but hopefully now my problems will have gone away. Going to let it warm up and then thrash it in first gear somewhere in a straight line and pray it doesn't slip out. In winter when I first got it and was getting used to it I got fairly confident (in a straight line that is ) and would apply a lot of throttle in first (ie. coming through a toll booth) and I'd feel the front get light and lift up a tiny bit before I changed gear. It felt awesome. But now the past few months it would just spin without even feeling like I was really flat out.

[sc0tt]

Im impressed that the tyre breaks traction before the front end comes up.

[roboR]

sc0tt said:

Im impressed that the tyre breaks traction before the front end comes up.

I'm not! I'd much rather wheelie than slide everywhere

[cat with a hat]

sc0tt said:

Im impressed that the tyre breaks traction before the front end comes up.

Depends on the road surface and weather

[sc0tt]

cat with a hat said:

sc0tt said:

Im impressed that the tyre breaks traction before the front end comes up.

Depends on the road surface and weather

Yes most obviously. But hot Tarmac in this case.

[roboR]

sc0tt said:

Yes most obviously. But hot Tarmac in this case.

It's fairly hot here: http://www.mirror.co.uk/news/weird-news/watch-woma...

Edit: Just realised that's exactly what you meant doh. Yeah it might have been the road, or me being an idiot. I guess I need more experience in any case.

[Prof Prolapse]

sc0tt said:

Im impressed that the tyre breaks traction before the front end comes up.

Especially given its something like a 1/4 turn throttle so you need to grip, let go, and regrip again to get full throttle. So it's no like you can really grab a handful that easily.

Most likely is its not actually slipping I think.

[Biker's Nemesis]

Has anyone mentioned ham sandwich I mean ham fisted.

[Jazoli]

Prof Prolapse said:

sc0tt said:

Im impressed that the tyre breaks traction before the front end comes up.

Especially given its something like a 1/4 turn throttle so you need to grip, let go, and regrip again to get full throttle. So it's no like you can really grab a handful that easily.

Most likely is its not actually slipping I think.

When I lived in Spain I could get my Fazer 600 spinning up quite easily on the commute to work, my Exup was even worse, and could be a liability on shiny polished roads, its really not hard to do, the local kids used to drift their scooters everywhere with about 5bhp, the road surfaces can be that slippery, especially in towns and cities, its less of an issue on open roads.

[LoonR1]

roboR said:

UPDATE

So it went to the garage fella this morning. He confirmed bearings, chain and tyre wear is all fine. He said it's... tyre pressures.

Well strictly speaking he said it could be a few others things also but running on 36/42 in Gibraltar is too high. He comes well recommended from bikers here (owned 47 CBR's, had his garage for 15+ years etc) so I'm going to go with what he said.

He booked me in for next Wednesday for a proper check on the full bike. In the meantime he charged me nothing for looking at it quickly, and he dropped my pressures to what he recommends (30 front and 35 rear). He told me to drive it around till next week and if it seems fine to call up and cancel the booking. If it keeps happening then to come in and have his mechanics check everything.

Seems almost too good to be true, but since he didn't charge me anything and told me to cancel the booking if it rides fine the rest of the week then he's definitely being honest with what he thinks it is at least.

None of his mechanics batted an eyelid at lowering the pressure so I guess it might be fairly common here.

TL/DR: High tyre pressure and I can't ride a bike very well.

Edit: Kinda funny also that he said around corners it could be because of the chicken strips Said you can see I've been out to the edges a few times, but mainly ride around the middle few inches

I said I'd just got the bike pretty recently (Dec/Jan) and was building up more confidence, then summer hit and I started sliding everywhere so became like a granny hah.

Edited by roboR on Wednesday 29th July 12:56

Really? You've been to the edge a few times, yet ride like a granny and there are chicken strips and the bike spins when bolt upright in a straight line.

[moanthebairns]

we hate Jimmy Hill, he's a poof, he's a poof.

[moanthebairns]

Its a mixture of....wait for it....too high pressures and polished road surfaces in town. The road surface could be 40 - 45 degrees, I was in the canaries last week and at 35 degrees I couldn't walk to the bar with ankle socks on as it was burning, the roads were the same. You are effectively going out with a tyre warmer on.

Plus probably a new rider feeling like the world is coming to an end when it slips a tiny bit.

There I've tried to be as helpful whilst not being insulting.

Jimmy Hill is still a poof

[roboR]

Insulted by loon, guess that makes me a proper bb member now lol.

Gibraltar is entirely slow town driving, we have a max speed limit of 50kph. if you can get to the edge here you'd have to be driving pretty dangerously. I work most weekends but when I get one off I go to Spain where there are awesome roads. That is why I've gone do the edge a few times, but mainly drive in the middle. Also I'm a stty noob. l
And I said I drove like a granny after it started slipping all the time.

Oh and it's definitely very side to side, I'm not imagining it.

As for ham fisted, yup probably likely. I've said many times I'm a noob to all this, hence asking on here and the garage. All gotta start somewhere. Thanks for all the advice given everyone.

[LoonR1]

You've still got to explain how you can have a bike that's sliding around when upright, so much so that you're asking for help on here, but at the same time are happy to take the tyre to the edge on the same roads?

[roboR]

Guess I didn't explain it well. I got the bike Jan time. Started driving and loving it, going to Spain and driving there, which is where I'd go low(ish). In gib I don't go low at all, hence middle is most used as its just stop start town driving. The spinning out started happening around 6-8 weeks ago. First on a roundabout, but then on the straights three times, all doing the same thing, fast acceleration in first. Once it started happening it made me drive like a granny as I thought there was a problem with the bike. Once I've been told its me as an idiot I've relaxed a bit and will use it more again. Basically I was gaining more and more confidence until this started happening. Sorry for errors, typing on my phone.

[roboR]

Oh and I should add (to appease further questioning) that near the edge means half a cm away. And when I say I've relaxed since being told the bike is fine I don't mean I've gone crazy. I've realised how rubbish I am, so trying to learn more and take it slowly.

Edited by roboR on Thursday 30th July 09:01

[CaptainSlow]

If you're going for long spirited rides in hot temps on hot roads I still think your pressures are too high. I was running F32/R30 on track a couple of weeks ago and run about 36 or 38 on the rear throughout the year on road.

[roboR]

CaptainSlow said:

If you're going for long spirited rides in hot temps on hot roads I still think your pressures are too high. I was running F32/R30 on track a couple of weeks ago and run about 36 or 38 on the rear throughout the year on road.

Hi thanks! Yeah the garage recommended 30 front and 35 rear so I'll go with that for now and see. The bike is infinitely better than I'll ever be, but having it happen so often really knocked my confidence.