Recent Posts

1

General Discussion / The Art of the Motorcycle the back story.

« Last post by steven c on Today at 02:45:08 PM »

 https://thevintagent.com/2023/03/26/the-art-of-the-motorcycle-the-back-story/

2

General Discussion / Re: Transmission stuck in 2nd gear.

« Last post by pehayes on Today at 02:43:59 PM »

I am not sure what the clutch spline is you are talking about.  How do I determine which one is currently in the bike?  The actual clutch plate is fine, no issues there, and it may have been replaced when the return spring was changed to the three coil one.  They also installed the cups on the clutch rod backwards.

Talking about the input gear or spline on the front of the transmission.  That spline inserts into and is driven by the two clutch friction plates.  Your picture back on page one shows a deep spline = 4mm which is the newer/better spline.  Earlier bikes had a shallower = 2mm spline tooth depth.  Most people upgrade to the newer 4mm version if changing out the entire clutch.  I'm not sure if a 93 SP3 came originally at 4mm.  That was about the time of the design change.  While the newer plates and spline can fit older bikes, you can not mix 2mm plates with a 4mm spline.  Change all or change none.

What do you mean by "...cups on the clutch rod...".  Referring to two slightly tapered rubber seals?  Which way did you find them?  Picture?  Many people now abandon those two cup seals and substitute a stack of 5(?) o-rings instead.  See on Bender's site at:  https://www.thisoldtractor.com/moto_guzzi_loopframe_clutch_push_rod__installation.html

Patrick Hayes
Fremont CA

3

General Discussion / Re: Transmission stuck in 2nd gear.

« Last post by Tom H on Today at 02:26:19 PM »

On page 1 about 3/4 way down there is a pic. Looks like a deep input hub.

Baxterday,I posted a pic of the deep and shallow clutch hub earlier take a look at the pic.

You could try to use a strap wrench to hold the input hub and then the output shaft. Not the best, but should work.

Tom

4

General Discussion / Re: Discovered new MG specialty tool

« Last post by Guzzistajohn on Today at 02:16:26 PM »

I have a ceiling mounted patient lift in my garage. I wasn't a farmer 

5

General Discussion / Re: What is it?

« Last post by Guzzistajohn on Today at 02:14:43 PM »

An old man I worked with in my teens would say "Looks like an asshole off a hobby horse to me" 

6

General Discussion / Re: What is it?

« Last post by fotoguzzi on Today at 02:13:23 PM »

Good puzzle, I bet you get the right answer in a day.

7

General Discussion / What is it?

« Last post by bmc5733946 on Today at 02:04:08 PM »

 
I have a found object I am unable to identify. I am hoping youse guys can help. The threaded stud is 8mm x 1.0 and lefthanded. the little tab in the center slides in one direction as indicated by the arrow on top retracted by a scroll spring installed under it. The top of the unit turns in both directions with some difficulty on the base which is made in one part with the exposed threaded stud. There are two very small roll pins which appear to hold the upper part of the assembly to the bottom plate. Any ideas would be appreciated. My brother found it in his desk drawer and can't remember where he originally found it but its use was unknown to him then as well.

Brian


















    
 

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General Discussion / Re: Discovered new MG specialty tool

« Last post by LowRyter on Today at 01:56:11 PM »

It's a pick ax! Discovered the flat blade works great for sliding under the rear tire when removing or replacing the wheel to help make that fine adjustment to alignment to get the axle out and in easier.



GliderJohn

I'll bet you were a farmer.   

9

General Discussion / Re: Transmission stuck in 2nd gear.

« Last post by baxterday on Today at 01:54:02 PM »

You should put specified torque on the input and output shaft nuts.  In each case you'll need special holders.  Is there anyone nearby to you that could loan those holding tools?  Are you going back with the original 2mm clutch spline or moving up to the better 4mm clutch spline?  That determines what you use to hold the input shaft.  I can loan, but shipping from CAL would be expensive and delayed.  Must be someone closer.









Patrick Hayes
Fremont CA

I am not sure what the clutch spline is you are talking about.  How do I determine which one is currently in the bike?  The actual clutch plate is fine, no issues there, and it may have been replaced when the return spring was changed to the three coil one.  They also installed the cups on the clutch rod backwards.

10

General Discussion / Re: Transmission stuck in 2nd gear.

« Last post by pehayes on Today at 01:37:21 PM »

You should put specified torque on the input and output shaft nuts.  In each case you'll need special holders.  Is there anyone nearby to you that could loan those holding tools?  Are you going back with the original 2mm clutch spline or moving up to the better 4mm clutch spline?  That determines what you use to hold the input shaft.  I can loan, but shipping from CAL would be expensive and delayed.  Must be someone closer.









Patrick Hayes
Fremont CA