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Cali Special/Bassa shifting issues

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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 16:20
Well it is a different lever at the bottom, with two bolt holes. The rear one is used. But the angle at the top doesn't look the same as Kidneb's picture.
Brian.

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c13pep View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 19:26
Originally posted by red leader one red leader one wrote:

I'm no engineer but that ball joint does not look comfortable.



It might look a bit better using other hole in bottom lever

CHRIS
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kidneb Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 20:48
Originally posted by c13pep c13pep wrote:

Originally posted by red leader one red leader one wrote:

I'm no engineer but that ball joint does not look comfortable.



It might look a bit better using other hole in bottom lever

CHRIS

Yeah,- that would be the first thing to do. The rear hole must be home made? But why?
You even get a shorter lever action using the front one.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote murringoking Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 05:19
Hi all.  Thanks again for the replies.  I have a theory that the ball joint nut coming loose at the shifter is why my downshifting has gone bad.  However, I have also dissembled the linkage system and given all ball joints and pivots a good clean and grease.  Re the angle of the top ball joint, I think the PO must have moved the linkage back to the second hole.  My research tells me that there is supposed to be two holes and the one nearest the pivot point results in better shifting.  Presumably this is because any movement at the toe/heel lever results in greater movement at the gearbox in this configuration.  However, when he did it I don't think he adjusted the linkage lengths to compensate.  I have adjusted things that that I have a nice parallelogram shape in the linkage.  Double checked that everything goes through the full range of movement without fouling anything.  
I haven't tested this out but will report back when I do.
BTW there is no way that lever at the gearbox end is going to be readily twisted/bent.  It is very strong cast (I think) steel.  The foot shifter/linkages will bend first.  My foot shifter was bent up a bit at the toe end and I've successfully straightened it.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 07:33
The hole nearer the pivot will move less for a given movement of the foot than the hole further away. Thus to change gear your foot would have to travel further (but will require slightly less pressure on the pedal).

Change to the other hole, further away, and see what difference that makes.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Zambuck Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 10:02
I rode a Cali Special for many years and had a very similar problem with gear shifting. It would get progressively worse until the left foot peg fell off. For some unfathomable reason the footpeg bolt would sheer every few thousand miles. Might not be the case with your Cali but check that the left footpeg bolt hasnt sheered (if you havent already checked it while chasing the problem)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 16:41
Unless I'm missing something, the pedal part of that linkage looks homemade. Moto Guzzi wouldn't provide two holes for where to fix the ball joint just in case you wanted to change how far your foot moves when changing gear. Or would they?


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Post Options Post Options   Thanks (0) Thanks(0)   Quote murringoking Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2018 at 23:37
Quick update.  As Brian points out, the nearer hole results in a shorter lever and less travel for any given toe/heel movement (not sure why I was thinking otherwise).  BTW my understanding is that the Calis come standard with two holes.  Whatever, mine has two and it was set in the nearer hole.  I have shifted it to the outside hole (standard position?) and adjusted the linkages for a nice parallelogram shape and no strangely angled ball joints.  I have only had time to do a short test ride (did not get it really hot) but the shifting is far more positive than before.  Only a decent ride will tell for sure but I am hopeful that more involved gearbox work won't be needed at this stage (fingers crossed).
Thanks to all for the help.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 05 Nov 2018 at 07:33
Good to hear a positive outcome.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 06 Nov 2018 at 14:07
OK then! But why 2 holes if the other makes the angles all wrong? Wacko


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 06 Nov 2018 at 14:25
Pass. But it is Italian.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2018 at 18:52
Weight saving? Big smile


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Keef Mayhem Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2018 at 13:28
Both my LM4 and LM5 have two holes in the lower shift linkage, the gear change is much better using the front hole, less lever travel at the toe end needing a bit more force makes the change noticibly faster to me.
So many bikes, so little time !
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Post Options Post Options   Thanks (0) Thanks(0)   Quote murringoking Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2018 at 21:44
A follow up.  Finally got around to a decent ride on the Cali yesterday.  300 km so bike was well and truly warm.  No missed down shifts.  One missed up shift, probably due to rider fatigue and not being positive enough with my heel.  Conclusion is that the outer hole is definitely the way to go, in my case at least.  The other thing I've noticed is the downshift is better when initiating the shift sooner rather than later after pulling the clutch.  I had been declutching then waiting for a second or two for the revs to reduce (that flywheel likes to spin on for a while) before initiating the shift.  Yesterday I found that hitting the shifter pretty much immediately gave a far nicer result.  Interesting.
Anyway, lesson learned: if you have a false neutral issue check the linkage first.
Thanks to all for their suggestions.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 16 Nov 2018 at 23:23
Yes I found it best to pull the clutch and push/pull the pedal simultaneously. (Works on the Ural too.)

I learned to do this with my Honda CD175 (of many years ago) which otherwise would ALWAYS find a false neutral instead, between EVERY gear.



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