Gear changing problems, 87 vfr750f

I got some gear changing problems yesterday. Got werry hard do change gears, and I nearly got down in a corner becors as I shifted down it found a fals neurtal. I had 120 km/h speed so..
The cutch acts normal, frees fully when I stand still.
The od thing is it still shift normal when not using the clutch!
A friend suggested it can be the clutch plate got bad.
Any idea? Anyon had this problem?

 

shifting?

It sounds similar to what I experienced last week on my 1986 VFR 750. When I consulted with my mechanic he told me to apply more force when shifting. This has resolved the issue for me. Not sure what to say about the clutch.

Good luck!
-Brent

 

Well it has always needed force to the shift level, it never been as smoth to shift as a suzuki. But now the force needen is too much in my likeing, and the change is sudden.

 

my 86 is similar, shifts better without clutch than with, and with clutch often takes a lot of force. The shifter moves with a what feels like it should be enough, but a bit more forceful makes it click over a bit more, and actually pick up the next gear.

Although I seem to have this problem mostly 1->2 and 2->3. Downshifts seem to always work ok (but I'm probably shifting down harder than up...)

 

Try slightly pre-loading the shift lever before the shift. Also, lube the shift linkage.

 

there is some aftermarket parts that you can buy for the transmission to make it much better, one of my 86 vfr750f has them installed and it was a world of difference

 

Speed,

Any idea what those parts are?

 

let me look someone just posted a thread not to long ago about this ?

 

Here you go mate, hope this helps.
Cheers

Factory Pro Shift Kit -http://www.factorypro.com/products/shift_kit,Factory_Pro.html

Thought you might like to know about an accessory I've just fitted.

Ordered a Transmission Detent Spring Kit for my VFR750, which is basically a spring and a gasket (and a rather optomistic title).

Anyways, it replaces one of the springs in the gearshift mechanism - the kit verison is significantly more substantial than the original spring it replaces. Fitting it wasn't quite as straightforward as the guide suggests, although the bits that needed removing to get into the main mechanism clearly hadn't been remover from the bike since it left the factory.

As far as operation goes, it pretty much does what it claims. It makes the shift faster and seemingly more accurate. The mechanism clicks out of one gear into the next (up and down through the range) very sweetly.

If you can get hold of one and can be bothered to put the effort in, I'd say it's worth it. But it won't sort out any false neutrals you've got - I've got one between fifth and sixth that I can't shift (if you'll pardon the pun), although the new spring does make it less noticeable.

Now I've gotta work out how to fit one of their Drop In Carb Kits without screwing up the fuelling. Looks like a trip to a dyno is on the cards.

Neil aka The Chauffeur

 

tedric, thanks for the help

 

I seem to found what was the problem in my case. The washer that hold the spring (that is a u shaped) in the shifting mecanism was slightly bent, and made it touch the shift gears in the mechanism every time gear was changed. I haven ridden it yet, as I wait for new clutch plates and will not add new oil until I have them (clutch plates) changed. But based on what I tried whit my hand, it works much better. You might ask why change clutch plates, well they are still stock ones, and over 20 years old, so I guess its safer to change them.
Tedric- I also have the issue changing from fift to sixt. Always been there, and need extra carfull shift, or you have a false neutral.

 

No problem, just read about your daughter. Hope she gets better soon,& also hope you & your Mrs are ok.
Cheers

 

Nice one Keny, keep us updated on your progress with gear change.
It would seem there is a this 5-6 gear false neutral problem on a few highish mileage bikes that I know of. By high mileage I mean 40k plus.

 

Thanks for the info.

 

I´ll let you know how it works when I ridden it, will be middle next week soonest.
Hers a parts diagram pic. Its the U shaped washer (part nr 8) in middle of pic under the shift drum that was bent. Easy to bent back to strainght.

 

Finaly made a testride yesterday, sorry for the delay but had some other problems.
What can I say, this bike has newer shift this smooth under the time I have hade it!
You have to be presice, and shifting to second, and from fift to sixt still need focus, and a long movement on the shift level, but you dont need force to do it.
I do have to say, if you open the shift mecanism, get a manual. Its a bit tricky, not for everyone!

Also clutch action much better, most to thank the brained clutch cabel/horse

 

Many thanks for the update Keny, will try it out.
Cheers