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Gear seletor
roadrunner - 27/6/07 at 06:07 PM

In the last couple of runs , i've either missed a gear, which i thought you could'nt do with a bike engine , and then last night, a bit of a crunch when selecting third.
what i want to know is, is it the selector, and is it expensive and difficult to change , in a zx9.

coozer - 27/6/07 at 06:27 PM

Sounds like the 'throw' on your gear selector isn't pushing the gear selector far enough.

I've had that on my ZX9 if your a bit lazy on the gear stick. You need a good positive selection to get then in first time.

roadrunner - 27/6/07 at 06:51 PM

It does seem to happen when i'm pushing on a bit, i will have a look before i take the engine to bits.
Cheers coozer

jacko - 27/6/07 at 06:55 PM

Odear another bike box bet you wish you still had the type 9 know
PINTO POWER PINTO POWER

roadrunner - 27/6/07 at 06:57 PM

it would still out run a pinto.

jacko - 27/6/07 at 07:04 PM

quote:
Originally posted by roadrunner
it would still out run a pinto.


NOT FOR LONG

coozer - 27/6/07 at 07:10 PM

Obviuosly a bike engine is better than a potatoe power pinto... IMHO!

speedyxjs - 27/6/07 at 07:27 PM

quote:
Originally posted by roadrunner
it would still out run a pinto.


well how about JAG POWER

Hellfire - 27/6/07 at 07:57 PM

quote:
Originally posted by speedyxjs
quote:
Originally posted by roadrunner
it would still out run a pinto.


well how about JAG POWER


Yep. It would outrun one of those too. Waaay too heavy

Phil

jacko - 27/6/07 at 08:06 PM

Not without a gear box

roadrunner - 27/6/07 at 08:20 PM

The box is fine, it's just me being in too much of a rush.HE HE.

jacko - 27/6/07 at 08:30 PM

quote:
Originally posted by roadrunner
The box is fine, it's just me being in too much of a rush.HE HE.
Thank God for that summer is short enough without it been of the road for gear box problems .
We just need the weather to get better .
Cu soon
Graham

Wadders - 27/6/07 at 08:39 PM

Check the gear linkage, ZX9's need a good positive shift, any slop in the linkage will potentially give you problems. If its a 'C' model
it's par for the course, but normally happens on downshifts.

Al.




Originally posted by roadrunner
In the last couple of runs , i've either missed a gear, which i thought you could'nt do with a bike engine , and then last night, a bit of a crunch when selecting third.
what i want to know is, is it the selector, and is it expensive and difficult to change , in a zx9.

roadrunner - 27/6/07 at 09:44 PM

Cheers wadders, mine only happened on upshifts,but it could be the long linkage flexing, if i'm driving steady, i have no problems at all.

BenB - 27/6/07 at 09:55 PM

Def check the linkage....
Also, is it any particular gear? When I shift from 1st to 2nd I have to give it a fairly meaty shift- any other gear it's super light....

awinter - 28/6/07 at 08:17 AM

I get the same problem on the upshifts if I rush a change. End up in neutral its me not the box. Box is fine and I use the clutch for down shifts.

Allan

Edit, I bought my car from Coozer, so he could be talking about the same engine.
'allo steve

[Edited on 28/6/07 by awinter]

roadrunner - 28/6/07 at 06:36 PM

I use the clutch all the time, can you get away with not using it.

Toady1 - 29/6/07 at 08:29 AM

apparently so mate, on the up shifts and once in 2nd anyway! My mate does it on his bike all the time. Not too sure how well the box will like it tho??? I think ill be a bit sympathetic with mine and use the clutch when driving slowly, and clutchless changes when going for it.

Hows the conversion going anyway? Im so close to finnishing mine now! cant wait!

Hellfire - 29/6/07 at 11:19 AM

quote:
Originally posted by roadrunner
I use the clutch all the time, can you get away with not using it.


No need to use the clutch at all on upshifts. The higher the revs, the sweeter the gear drops in, although you may wish to use the clutch in the first few gears if going slowly

It's a fine art doing clutchless downshifts though and personally, I would avoid it in a BEC application.

Phil

gingerprince - 29/6/07 at 11:38 AM

quote:
Originally posted by Toady1
apparently so mate, on the up shifts and once in 2nd anyway! My mate does it on his bike all the time. Not too sure how well the box will like it tho???


If you do it right the bike actually prefers it, due to the dog arrangement of the gearbox. if you use the clutch then you are slowing down the output shaft and creating a speed differential that "clunks" when you release the clutch. this technique is "taken" up in traditional synchromesh gearboxes but a bike gearbox is a completely different design. there was a good article somewhere on i think howstuffworks.com that explains it in detail.

speed8 - 29/6/07 at 12:42 PM

Clutchless upshifts are no problem on a bike engine although I prefer to use clutch between 1st and 2nd due to neutral being in there.

Downshifts can be down too but there is more wear in the box and more chance of mashing things up so I personally use the clutch unless I'm at low revs on the downshift (apart from the risk of locking the rear on a bike)