Topic: Cb400f False neutral in 5th. Possible damage?

[Alaxy Galaxy]

I was pulling hard in 5th and my cb400f popped out of gear. I just about avoided the red line, but the bike felt off afterwards. It felt like it was lugging under 6000 rpm. I still rode about 30 km home at about 110 km/h without any incident.

I forgot to check if all exhaust ports were hot, but the next day, all 4 cylinders were right at 150psi compression.

What do you guys think?

[Nurse Julie]

If it got you home at 110 km/h there can't be much wrong with it 😁😁😁 On a couple of occasions when I have been lazy with the gear shift, I have had the same happen, never caused any damage though.

[Bodi]

It shouldn't have bonus neutrals, but things wear a bit over 45 years of use.
The shift drum grooves and the follower pins on the shift forks wear so you can get incomplete dog engagement. One thing is to shift firmly and rapidly, that helps drive the forks into position.
These parts are not easy to find new, and used ones... who knows if they are good?
Dogs can be damaged by powershifting but if you get a phantom neutral and shift back into gear with clutch disengaged it should not cause any damage.

[Alaxy Galaxy]

It shouldn't have bonus neutrals, but things wear a bit over 45 years of use.
The shift drum grooves and the follower pins on the shift forks wear so you can get incomplete dog engagement. One thing is to shift firmly and rapidly, that helps drive the forks into position.
These parts are not easy to find new, and used ones... who knows if they are good?
Dogs can be damaged by powershifting but if you get a phantom neutral and shift back into gear with clutch disengaged it should not cause any damage.

It has happened a few times after at least an hour of constant riding and it's always between the 4-5 shift (up into 5, down into 4). I try to shift firmly, but I'm sure I slip up often still. I never powershift (not on purpose!)