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Re-engineering the Shift Spring


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5 minutes ago, docc said:

How many miles on the LeMans, Tom?

ODO is km now but converting prior miles I come up with total of 25,906 miles.  Very likely the 2nd pawl spring but have no way of knowing for sure.  

 

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Just talked with the guys at the spring company. It seems their manufacturing tolerances are not quite as tight as Chuck's experience. However, we have sorted it out and they are making a new batch of

Yeah, grumble about the bit being too long (but that's better than too short).  However, there's no way I'm sending out any springs that cannot be installed as-is. While I appreciate the offers of hel

Anywhere someone is allowed to express their opinion. While we think of this as detrimental it's actually a key component of crowdsourcing. If you get enough people expressing their perspective you wi

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On 6/8/2020 at 5:55 PM, hammershaug said:


Hard rain in Norway all this weekend, how about Sweden? Have you installed the new spring?

I have plans to replace the spring myself... I have so many plansemoji6.png


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Done now.

Relatively "easy" following the excellent write-ups in this thread, Phils and belfastguzzis.
Also helping is adhering to "RULE NUMBER ONE OF V11 TINKERING":
"Thou shalt always remove any and all parts from thine V11, even the parts thou thinks must not be removed, for they shalt need to be removed anyways, sooner or later, to get to the part upon which thy desire to tinker":oldgit:

The old spring looked OK (but it isn't. See Chucks reply below.), but more compressed than the new one.
Road test report to follow once the weather clears.

 

Springs.jpg

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The old spring looked OK,

The old spring is not OK. :oldgit: It has already taken a "set" from over travel, and will break sooner of later.. your number one rule on tinkering is spot on, however. :grin:

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On 7/3/2020 at 11:08 AM, VeeEleven said:

*snip*....
Road test report to follow once the weather clears.

My box was quite good before, with just the occational return binding, but felt even better during a quick 10km round the block. Crisp shifting and no binding.

Add another happy customer to the list.:D

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Chuck, do you or Scud still have any of the new shift springs available?  I keep one of the old style in my tool kit just in case my original decides to break.  It's always on my mind everytime I take the bike out and have decided to just go ahead and change the old one out while in my garage and not leaned over on some roadside in 90° heat.

 

Jerry

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Yeah, I'm sure Scud has some. Don't worry, be happy. :D It was always on the back of my mind, too. It's *possible* to change one on the side of the road, but I'd hate to try it.

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It's gonna be rain tomorrow, so finally time to replace the gear change pawl spring. Not sure if this guide has been posted here, but it looks good to me:

https://sites.google.com/site/motoguzziv11rossocorsa/home/gearbox-pre-selector-spring

 

Thanks for the springs, Scudder!

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1 hour ago, hammershaug said:

It's gonna be rain tomorrow, so finally time to replace the gear change pawl spring. Not sure if this guide has been posted here, but it looks good to me:

https://sites.google.com/site/motoguzziv11rossocorsa/home/gearbox-pre-selector-spring

 

Thanks for the springs, Scudder!

that looks good, it's been awhile since I did mine. One of those allen head bolts at the bottom (behind the frame rail) is a bit tricky. I sacrificed a wrench (cut it off) and used a small steel tube as a cheater bar for adequate torque. Somewhere on the forum is a Lucky Phil thread on "finessing" some of the other bits... while your in there, very worthy read.. I used three-bond 1194 (grey) to seal her up.

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9 minutes ago, footgoose said:

that looks good, it's been awhile since I did mine. One of those allen head bolts at the bottom (behind the frame rail) is a bit tricky. I sacrificed a wrench (cut it off) and used a small steel tube as a cheater bar for adequate torque. Somewhere on the forum is a Lucky Phil thread on "finessing" some of the other bits... while your in there, very worthy read.. I used three-bond 1194 (grey) to seal her up.

 

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48 minutes ago, footgoose said:

that looks good, it's been awhile since I did mine. One of those allen head bolts at the bottom (behind the frame rail) is a bit tricky. I sacrificed a wrench (cut it off) and used a small steel tube as a cheater bar for adequate torque. Somewhere on the forum is a Lucky Phil thread on "finessing" some of the other bits... while your in there, very worthy read.. I used three-bond 1194 (grey) to seal her up.

Scudd also came up with a needle bearing option for the detent arm instead of the original Guzzi plain roller that was't covered in my thread. That would also be a good upgrade to do while you're in there.

Ciao

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New spring from @scud. Perfect fit.

The new and reinforced spring from @Chuck and @Scud in place.

 

The black, old spring looks compressed

The old one has another geometry. Must be compressed?

 

A pretty straightforward task, except for the placement of selector gears when re-mounting... I didn't note what gear it was in when tearing down the gear cover. I think it was in 1st, but I moved the gear level pedal when I took it off and accindentally changed gear. Can I see it from this photo? 

Inside gearbox. Which gear is it in..?

 

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Your old spring was ready to break from over travel.

From memory :rolleyes: the gearbox needs to be in neutral for the dogs to line up, so from memory :oldgit:you can't assemble it incorrectly. :)

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Thanks, Chuck! I will set the gearbox in neutral and try to enter the side cover back on. Good to hear I can’t assemble it wrong...

 

I’m thinking about replacing the seal around gear level shaft. Anyone had a leak from it?

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Many years ago, a leak around the shift shaft was one of the things that stopped me from buying a nice greenie. Which I regret to this day.

Don’t know how common it really is.

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