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Clutch up wheelies are they bad for the gear box ?

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Dtaylor12345
Two Stroke Sniffer



Joined: 24 Oct 2018
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PostPosted: 12:40 - 27 Oct 2018    Post subject: Clutch up wheelies are they bad for the gear box ? Reply with quote

Hello I am mainly just asking this beacuce I like learning about bikes .

Right I know clutch up wheelies on any bike isn't good for the clutch as it puts ware on faster . But I know people still do wheelies even after knowing the facts, beacuce they know it will take a while for the clutch to completely brake and it's relatively easy to replace.. I believe it causes ware to the clutch. Cush drive rubbers and also chain and sprockets and that's it .

Anyhow that's my understanding, but what my question is does this accturaly damage the gear box ? I believe with the fact it's already in gear when you do a wheelie it's just mainly the clutch your stressing ? But I have read online that it can also damage the shifting fork. They said that this extra tork causes the gear to slide on the shaft pushing pressure on the shifting fork.

I mean I don't think that's right as it's already in gear? Does anyone know the facts of exactly everything a clutch up wheelies can damage?
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Riejufixing
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PostPosted: 14:18 - 27 Oct 2018    Post subject: Reply with quote

Ah so clutch up wheelie eggscuse plswhat is clutch up wheelie pls?
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P.addy
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PostPosted: 18:50 - 27 Oct 2018    Post subject: Reply with quote

Can't see it doing much damage if you do it correctly. It's just slipping the clutch and giving the bars a tug. If you are banging the clutch out and being a retard then yes ... It may break.
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 18:53 - 27 Oct 2018    Post subject: Reply with quote

There are other things that wheelies do to bikes that are much worse than damage to the gearbox. Trying to to through the box on the back wheel can damage some bikes second gears (Thundercat etc). But personally I'd worry much more about oil starvation on bikes where the oil pickup is at the front of the sump.
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Riejufixing
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PostPosted: 22:24 - 27 Oct 2018    Post subject: Reply with quote

Paddy. wrote:
Can't see it doing much damage if you do it correctly. It's just slipping the clutch and giving the bars a tug.


Oh OK. I see what a "clutch up" wheelie is. It's what we used to call a wheelie.

(wanders off, shaking head)
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Teflon-Mike
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Joined: 01 Jun 2010
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PostPosted: 00:51 - 28 Oct 2018    Post subject: Reply with quote

In the grander scheme of things, as Marjay hintimates, there are quite a lot of bigger fish to fry than potential gear-box wear when attempting wheelies....

Like the possible damage to expensive plastic when SMIDSY man pulls out on you and you realise that bikes dont steer all that well with the front wheel off the ground...

Note I say 'all that well'... 'twas an argument I had with my 'Part-One' tester many many decades ago, when as a lanky git, sick of having a tail lamp up my rectum trying to sit back far enough on the saddle of a Honda H100, I could get full lock on the bars without getting tangled with my knees.... a-n-d at 17 y/o having come up from school-boy-trials, decided to do the 'slalom' trials-style on the back-wheel... A-N-D was promptly 'FAILED'... 'cos in the WPC's expert opinion, the powers that be say you cannot be in full control of a motorcycle, a) without having your arse in the saddle, b)both wheels on the floor.....

It IS some-what debatable, and the U-Tube clips of aces steering old 500GP bikes on one wheel, power-sliding them about corners with the front pawing the air, does sort of give lie to the suggestion.... No! son even put up a clip of me doing similar on the comp-trials bike in competition up a 45deg hill, on dirt... but still...... it is NOT the 'approved' way of riding a bike on the public road... and for good reason....

In other post you have aluded to being err... a bit over analytical vis possible transmission snatch, without mentioning mono-wheel-antics... me wonders whether there is a causal relationship between two things here.....

A-N-D a CBF650 is NOT something I would be inclined to try wheelie.... it's just NOT that sort of bike...... true, more lie is given to the approved truth by u-tube clips of folk wheelieing such devices as Pan-Euros, or even Full Dress gold wing.... on which point revelation came out many years after I saw it done at Olton, I think, that the top-box and paniers were water-balasted to get a weight shift moving the CofG as it tipped, but still......

Having started pigging about with bikes, in an era and when woolies sold Matel, 'Evil Knievil stunt' toys and I was more likely to get one of them in my Christmas stocking than a Yamaha TY80, even though Peter-Purvis was promoting 'motorcycle trials' on TV and Barry-Sheene was as famous as Hunt the #unt, and school-boy bets were "Go-on then, try doing a wheelie on my Sister's Melody Moped', THIS is not pure luddite BMF poster-child, humbug....

It remains... IF you are going to have a crack at wheelie..... whether the shock loading on the gearbox might do damage to the transmission, IS rather like juggling live mills grenades and being a bit bothered that pulling the pin would scratch the zinc plating, and it could go rusty before you had a chance to put it back in...... ?!?!?!?!?

MECHANICS! there's a lot of them in a motorbike.... cush-drive rubbers, chains, clutches etc etc etc.... none of them are going to take kindly to being shock loaded having oooh, 40-50bhp suddenly banged on them, and as mentioned, the whole bike tipped 45-Degrees or more from it's normal inclination tipping oil away from its pick-ups; head-race bearings and forks designed to hold a bike 'up' are not going to very much like going from positive gravity force to negative gravity force and back again in a 'bang'.... it's still worrying whether the zinc plating might let the grande pin go rusty!

From the 'off' wheelies are NOT great for mechanical reliability.... or rider longevity.... YOUR CALL really....

Go do a few thousand bang-up wheelies on your CBF... and tell US what brakes first.......

My bet is it WONT be a selector fork or gear-dog from the possible side-ways loading on the shafts... but it IS only a bet!!
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G
The Voice of Reason



Joined: 02 Feb 2002
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PostPosted: 09:49 - 28 Oct 2018    Post subject: Reply with quote

Riejufixing wrote:

Oh OK. I see what a "clutch up" wheelie is. It's what we used to call a wheelie.

(wanders off, shaking head)

Differentiated from using just the power - either rolling on or a blip - to bring the front up.

I have previously disintegrated a clutch by dumping a bit too much power at a bit too low a speed in second gear on a 600. But that's pretty rare.
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Dtaylor12345
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Joined: 24 Oct 2018
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PostPosted: 16:23 - 28 Oct 2018    Post subject: Reply with quote

Yes i agree with what you say. And I'm not the sort of rider to wheelie in the street but I have tried it on a quiet road in the past
Just to see iff it will do it but only a few times I don't agree with riding like a idiot on the road. , I mean my cbr 650f is restricted anyways so it's really difficult to do as it will only rev half way lol. Its Kinda lifeless I can't wait get it off lol.

I can accturaly wheelie the bike even restricted but only in 1st gear from about 10.mph it will come up for a second then come down again, but it will only do it reving it qwite allot and dropping the clutch .I feel like I can't keep it up anyways due to the power. But I'm not trying it again as it's pointless and your right it's not designed to be wheelied.

This post was litterly out of curiosity. I just want to know facts to what sort of strain it does to a gearbox I just can't see why it would cause damage there expecially the shifting fork, I just want to learn. Such as iff I wanted to wheelie my bike again I could accept the possible ware on what I've already mentioned.

Also things like head bareings I've heard only damage iff your really bad at wheeling and you slam the front end down. I belive a clutch will always ware no matter how good you are. What i could not accept is gear box damage. I'm happy to not try wheelies again, but Iff i was the type to want to do them all the time I would soon stop iff it's damaging the box.
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stevo as b4
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PostPosted: 17:52 - 28 Oct 2018    Post subject: Reply with quote

How old is this bike? How much wheelie action are you planning on? (I.e is this the odd wheelie down your street or away from the work carpark, or are you going to be constantly trying to be on the back wheel all day every day like an aspiring stunt rider instead of actually going anywhere on the bike)?

How long are you planning on keeping the bike? Is it for a couple of years or so or a keeper bike?

While I agree with all stuff said about machine and rider wear/damage, my take on it is:

1, bikes are built a bit tougher than you might think in many cases.

2, All bikes at say 10years old+ will start to feel a bit loose and baggy to one extent or another however you ride them.

I remember watching Fast bikes videos of a 2000mile+ trip to France/Spain where a 96 Fireblade was abused silly by the rider's, stuff like 5th gear 130mph wheelies, numerous stoppies and burnouts and general hooning. It and some other similar bikes were still running fine afterwards and made it back to the UK. Other bikes didn't last an afternoon by contrast.

On UK roads there's alot more big shit to worry about when riding or wheelieing than wear to a particular component of your bike.
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