setting off fast

[BigGeeking]

Hi all just a question about fast setting off on a bike from a stand still.

Do you set off and let out clutch normally then give it the beans,

Or

High revs and slip the clutch I have tried it and it is a lot faster but will it fuck up the clutch.

Sorry about the shit post

john
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[J4mes]

After doing two massive wheelies (according to my instructor) while trying to set off quickly by letting the clutch out and giving it full whack, I now slip the clutch as much as I can in order to keep myself on the ground!

[i.p.phrealy]

the former, i'm on a 125, i'm not gonna win any drag races.
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it is impossible to lick your own elbow...
and if you just tried you need professional help.
Finally allowed a big bike 19/03/14!

[bikertomm]

Obviously slipping the clutch is faster.. I'd only do that if it's penis size traffic light grand prix


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07' Honda Hornet now full powaah! My guide on performing an oil change!

[Seb]

It kind of hinges on the bike really. On the Sprint and my old Futura theres enough torque to just dump the clutch at 10mph and roll the throttle on, simply pinning the throttle on the Sprint would probably loop the bike mind . Revvier little bikes like the XJR400 or stuff with a super tall first gear such as my SP1 seem to benefit with more revs and some clutch slipping up to and even past 20mph to keep the motor on song.
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2010 Triumph 1050 Sprint ST

[barrkel]

Read up on drag racing techniques. Roughly, you want engine revs somewhere near peak torque, then as you slip the clutch apply throttle so that revs stay at around the same place until the clutch is fully engaged, then you start shifting up. Modulate power with the clutch rather than the throttle to avoid wheelies. But you're not likely to wheelie the SV unless you go silly with throttle or dump the clutch.

Yes it will wear out your clutch faster, but not nearly as fast as it would on a car, presuming you have a wet clutch.

On my scooter, I do full-throttle launches (so slipping built in) almost every time. Scooter CVTs use centrifugal clutches that slip at lower speeds. I anticipate replacing my scooter clutch shoes around every 12k miles.

On my ER6 - fairly similar to your SV - I very rarely do a full race start unless I'm having a traffic light race with someone, usually indicated by hearing the high revs as the lights go red/orange. Otherwise, just a little bit of slip then a fairly brisk (but not enough to bog) application of the throttle is enough to get going quite smartly. Twins usually get off the line quite a bit sharper than IL4s of similar capacity when not doing race starts since more power usually available at lower revs.
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Bikes: S1000R, SH350; Exes: Vity 125, PS125, YBR125, ER6f, VFR800, Brutale 920, CB600F, SH300x4
Best road ever ridden: www.youtube.com/watch?v=s2MhNxUEYtQ

[BigGeeking]

I was in a racy mood the other day and slipped the cluch but all i could think about was my cluch wearing down.

i keep riding my bike like i drive a car like its made of glass.


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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[DonDino]

After a few times setting off from lights as fast as I could, I got my first pillion... and a few headbutts later I realised I have to learn to control the clutch and throttle on setting off much more smoothly
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First bike: CBF125, Feb. - Oct. 2012
Currently riding: ER-6N since Oct. 2012

[Frost]

I usually rev it to get it producing an amount of power that will result in a quick get away but without wheel spin / wheelie depending on the bike. This of course is a different amount of revs depending on the bike. I then let the clutch out and slowly increase the throttle to compensate for the extra load on the engine. I let the clutch out with a clenched sphincter ready to react to any unwanted nasties until the clutch is out and the road & engine speed at synced up. Then I usually just give it full throttle unless i'm riding something mental then it depends on how rich / stupid i'm feeling.
Sounds all very complicated when you try to explain it in detail like that, but unless you're a total ham fisted spaz it's probably the same as what you do. Exact proportions of revs / clutch / throttle comes from intuition, feel and practise. I've always been fairly handy at the traffic light grand prix and have yet to eat tarmac so i can only assume i'm doing nothing too wrong.

[BigGeeking]

[quote="Frost"] quick get away but without wheel spin /quote]

on a motorbike fuck that
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[barrkel]

[BigGeeking]

I had a bandit 400 and I rode it like a idiot always revving it to red first time on a bike I got my knee down but just cant do it on the sv.

Sounds silly but I don’t like or don’t think the tyres are up to it
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[BigGeeking]

tyres are battleaxe 021s 3-4mm of tread and covered about 800 miles on them

what do other people think of them?

and i had bt45s on the bandit liked them then put maxxis on and liked them aswell
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[tracks]

[nowhere.elysium]

I've not tried BT-021s, but I've got a set of Pilot Road 2s on my SV at the moment, and although they're approaching the end of their useful life, I've had 5k of good, consistent grip out of them. They've only ever slipped on really bad road surfaces (such as rain and diesel at the same time), and even then it was momentary - I've never fully lost traction with them, unlike the D220s that came with the bike. I know that stock tyres aren't the same as aftermarket ones, even if they're the same marque/model, but those things have put me off Dunlops in a big way.

M&P have got Metzeler Z6s going cheap at the moment, so I'm inclined to give them a go next.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

[BigGeeking]

i have just looked up the tyre psi from the makers and the say 36f 42r psi but i have 32 in f and r will it make any differance to the way it rides.

because on the lable on the bike it says 32psi for tyres
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[hornetmike]

Bt 21s are pants proper they ruin every bike all our bike tec s at work all think so, they cause handling problems when the wear strangely they feel vague. Customer feedback is nearly always negative Metz z8 , bt23 and road pilot 2/3 are better .
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87 Honda CG 125 - 97 ER5 - SR 50 -81 Z250- 96 CBR 600 F- 94 GPX600R 88- GPX 400R- 87 GS 125 - 2006 Honda CB600F- 2003 ER5 - Honda CBF 1000 2009 - Honda CBR 600 RR 2011
Current BMW R1200GS 2010

[Yoyo]

I've always let the clutch out at the same time as rolling on the revs.

It just means (to me) that if in heavy traffic you can get a good punt off the lights but still keep it under control or basically pin it and have the front wheel skimming the floor.

Like I said, it has always worked for me, as you can feather the biting point and letting the clutch slip, and after a while it just becomes second nature, to have the bike up to revs just as you start the biting point.
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Joe: I don't wish to floccinaucinihilipilificate your choices, but the best word in the world is gaylord.

[Kickstart]

Hi

Depends on the bike. Can't say I worry about the clutch much on the bike. They are cheap enough and easy enough to replace and will take a massive amount of abuse anyway (on the early AF1 I used to quite often slip the clutch a touch with a pillion in top gear if the revs dropped rather than dropping down a gear and revving it far harder, and it took that for thousands of miles).

You have the most umph at peak torque. So no point in losing umph slipping the clutch to get the revs higher than that to lose even more umph. However on a 125 2 stroke that peak torque might well be close to the red line, hence rev the engine HARD and hold the revs high using the clutch. On most bigger bikes peak torque is little more than half way to the red line, so you don't have to slip the clutch as much and can get the clutch lever released and make use of full throttle earlier on

Or just get the back wheel spinning with the clutch lever released and then modulate the throttle.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[TomGT]

If I gave it the beans setting off in the morning I'd spin the back wheel until I got onto the road (surface is sandy stoney stuff), so I give it a little bit more power than needed and slip it a bit.

Surely that's standard on sportsbikes, like blipping the throttle as you change down?
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1992 ZXR 400

[BigGeeking]

thanks every one some good tips.

hornet mike, i have had the back end skip out now a number of times in the wet now because of that i think it is making me nervus it will slip out.

i would change the tyres or even have a track day i would love too but my wife drives a renault and that POS takes all the spare money.

thanks all
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Bendy "Flip front. I can filter down the M4 while shoving a Twix in my face."
honda CG 125 2001 SOLD-- current Bandit 400--SOLD. current SV650s 2000
MOD 1 ON 20/7/2011**passed** MOD 2 ON 17/10/2011***passed***,,

[Dave McCool]

Did a bit of 'run what you brung' earlier this year on the Gix, and ran some reasonable times using the 'scream the absolute tits off of it and slip the clutch up to about 50' technique. Had the front wheel hovering the whole way through first with throttle pinned, and all of my 16 stone as far forward as I could get it.

Certainly felt quick, and was a chunk quicker off the line than a mate who'd been advised to get the clutch out quickly and drive through first (also on a 750).

That said, pretty peaky engine with an 80mph + first gear (off the top of my head) pretty inevitable that some aggressive clutch action would be required...

Also, not to be underestimated is the importance of the fact that launching at 8-10k rpm with a pretty much straight pipe (think Moto2 and you're about there) sounds shitting awesome.

Had a random (and incredibly stupid) run from a set of lights in central London one night, pretty much past St Paul's, with a mate and a random polish guy, again on a Gixxer. All three bikes doing proper fast launches through first and into second gear must have sounded incredible in such an echoey space! Was certainly a lot of fun to be in the middle of...
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McGee - "When I go to the mall and see all the high school girls, I have to have DO NOT TOUCH THE GIRLS written on my hand. Every time I go to grope I see it and stop."
K7 GSXR750

[MarJay]

Bikes have multiplate clutches so they can take slip much more than a car can.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Andy_Pagin]

[Notj7]

Everyone talks of flipping their bikes, and I was worried about this when I first got my CBR 600 F. Now, setting off slowly in first then pinning it, the front wheel barely lifts off the floor at the top of the rev range. Shifting, to second pushes it back down again.

So really, just give it as many revs as you want, but control it via the releasing of the clutch. Clutch control is key.
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