quick question

bikermouse · 18-07-2007, 01:52 PM

ok was just wondering if i start the bike up without a back wheel on and up on stands will the motor turn the chain over, and if so is there a simple solution to counteract this as i really need to check the fueling and dont have a tire yet.

Orson · 18-07-2007, 01:54 PM

Not if it's in neutral...

hammer · 18-07-2007, 01:55 PM

if its in gear it will spin
you got a rim on with rear sprocket??????

bikermouse · 18-07-2007, 01:57 PM

Quote:

Not if it's in neutral...

[/b]

are u absolutly sure mate, because ive witnessed evidance to the contrary, and i dont want to go ripping my leg off or anything.

Quote:

if its in gear it will spin you got a rim on with rear sprocket??????[/b]

no sprocket, chain is hangin loose.

hammer · 18-07-2007, 02:02 PM

ok picture this your at a set of light and you put it ino nuetral and take ya hand off the clutch do you move

you will be right if ya realy paranoid strap ya clutch although it totally unneccesary
sounds like the other bloke had it in gear

RagnaroK · 18-07-2007, 02:05 PM

neutral shouldn't transfer any power.. if it does theres something fubared in the bike.

bikermouse · 18-07-2007, 02:08 PM

Quote:

neutral shouldn't transfer any power.. if it does theres something fubared in the bike.[/b]

k awesome im convined, thanks guys.

then why must one apply pressure to the back wheel to start some bikes, or is that on kickstarts? also ive observed gp racers using a motorised spinner to roll the engine over from the back wheel. i was just trying to be really cautiouse.

Orson · 18-07-2007, 02:11 PM

Quote:

are u absolutly sure mate, because ive witnessed evidance to the contrary, and i dont want to go ripping my leg off or anything[/b]

Yes I'm sure, that why it's called neutral ie. the gearbox is not engaged in any way and therefor there is no drive to the front sprocket.

Klink · 18-07-2007, 02:12 PM

Quote:

also ive observed gp racers using a motorised spinner to roll the engine over from the back wheel. i was just trying to be really cautiouse.[/b]

Because they dont have starter motors

rgvlee · 18-07-2007, 02:12 PM

Yes generally it will move the chain, even in neutral. Speed will depend on revs and will tend to spin up when the engine is cold (and the oil is cold, which is the cause). Obviously not like it's in gear, but it will move.

Cheers

L

RagnaroK · 18-07-2007, 02:12 PM

thats both 2 strokes and 4 stroke race bikes with no starter motor.

your bike should be all good to go buddy, but as always if in doubt ask a question.

Cheers
Alex

Nads 27 · 18-07-2007, 02:13 PM

Quote:

ok picture this your at a set of light and you put it ino nuetral and take ya hand off the clutch do you move

you will be right if ya realy paranoid strap ya clutch although it totally unneccesary
sounds like the other bloke had it in gear[/b]

Thats strange, I know when my bike is on its centrestand in nuetural, and I give it some gas, the rear wheel spins.
Now it dosn't spin really fast, but I would want to know how much more it is going to try and turn when there is no wheel on the back.

I hould hate to see someone get hurt listening to advice that people are not 100% on.

Have you thought about removing the chain, that was if anything dose move it will only be the front sprocket?

hammer · 18-07-2007, 02:16 PM

i dont think they have starters mate prob a wieght reduction thing

rgvlee · 18-07-2007, 02:17 PM

I should add that it generally won't spin on idle when cold, only when you increase the revs a few thou.

Cheers

L

hammer · 18-07-2007, 02:19 PM

it will spin due to the vibration more than any thing mate he aint gonna die

rgvlee · 18-07-2007, 02:20 PM

I'd be more worried about a chain not connected to a rear sprocket causing damage.

If you secure the chain you will be fine. You won't need a lot of force, but secure it nonetheless so you don't damage anything.

dugy · 18-07-2007, 02:22 PM

Those of you saying the rear wheel won't move.....have you actually tried it?

Like Nads/Lee said. Take the chain off. You're almost that far anyway.

Scoundrel · 18-07-2007, 02:23 PM

Yeah it will still turn really slowly, but only because of vibration.

I.E. if you put your foot on it while it was turning it will stop but when you take your foot away the wheel will start rotating again.

hammer · 18-07-2007, 02:24 PM

but doesnt that contradict the idea of nuetral

RagnaroK · 18-07-2007, 02:24 PM

any resistance the chain meets will stop the rotation, well as least on the 3 bikes i've owned it has.

i'm in half the mind to think it's only a resonant frequency or something causing it to rotate, because the amount of force required to stop it moving was sweet fuck all. probably not though.

Cheers
Alex