Swing Arm thrust washer Breva 750

[malik]

Ah-ha. Welcome to the club - been there, done that.

Now, if only I could come across the eccentric screw & its locknut that's missing from that gearbox - just noticed it was missing, when it should have been obvious, both from simple observation and from the movement of the selector shaft. Duhh.

[Muzz]

Do you need one Mal?

[SmithSwede]

Thanks for reporting back.   Funny story. 

I usually have a big old blanket underneath the bike for exactly this reason.    If the dropped part hits concrete it can bounce or roll or goes who knows where.   It is hits a bunched up old blanket, it will usually stay in the vicinity.

[malik]

Do you need one Mal?

Found it - up at the Shed today (contemplating taking a couple of gearboxes apart to find a good 5th gear - the hardening on V7S' is going - thus those flakes in the oil - and put it off to have a look around). Not in the first place I looked, but there it was, neatly packaged and labelled with the other V7C parts, just waiting for me get a round tuit. Might as well try fixing the V7C box while I'm here - going to need it - (and check the gears now I've a better idea what I'm looking at). I put it aside after replacing the gearshift return spring and the selector shaft wobbled when it wasn't supposed to. I guess I've got to lift the gear castle & play with preselector & eccentric screw & that other stuff under the drum until I get it locked in. Joy of joys. Well, I suppose if I can learn what I did wrong, I'd have an idea why a mate's selector shaft on his V7C now wobbles.

[Muzz]

 

One problem we had with the gearboxes from the 2TB's was the shaft with the nut on it that holds the lever with the roller bearing on it that workd the indent on the selector shaft had sheared.  We (Steamdriven and myself) went to replace it with the second hand one from the box that Pete Roper sent over and that sheared as well, even before the nut had even been tightened.  Kev replaced it by drilling it out, tapping it and replacing the shaft with a 10.9 cap screw.  Works a treat.

The shaft fortunately can't fall in to the works when it breaks because the rear bearing retainer plate is big enough to hold it in place.  I have a funny feeling that the V7ll has a different selector system but I may be wrong.

If it is like the original the lever has enough room to kick sideways somewhat; wondering if that shaft has broken and the spring is no putting the full amount of pressure on the detents.

[Chuck in Indiana]

^^^^
Anything round doesn't operate by natural laws. I'm not sure.. but I think they roll into a parallel universe, only to be seen again in the future.

[Muzz]

^^^^
Anything round doesn't operate by natural laws. I'm not sure.. but I think they roll into a parallel universe, only to be seen again in the future.

Profound Chuck, there is simply no other way to describe it.