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General Category => General Discussion => Topic started by: pete roper on November 07, 2016, 09:04:25 PM

Title: Question for the loop guys?
Post by: pete roper on November 07, 2016, 09:04:25 PM

OK so I'm having to replace the internals of the gearbox on this 750S due to the original box being a filigree of rust. I have this set of internals from an Eldo box but it has the earlier thrust washer rather than the needle roller on the end of the cluster shaft.

Now this bike is unlikely to ever be used in real anger but are the earlier thrust washer equipped boxes noticeably less reliable than the needle roller equipped ones or am I safe to use it? any other issues I should check?

Charlie? Anyone?

Pete

Title: Re: Question for the loop guys?
Post by: v7john on November 08, 2016, 03:32:17 AM

My '72 V7Sport came with a gearbox like that. Discovered this many years ago when I had it apart to replace the return spring and decided to look at everything else while I was at it. It's the original 'box and has now done about 160,000 miles.

Title: Re: Question for the loop guys?
Post by: Antietam Classic Cycle on November 08, 2016, 12:05:25 PM

Quote from: pete roper on November 07, 2016, 09:04:25 PM

OK so I'm having to replace the internals of the gearbox on this 750S due to the original box being a filigree of rust. I have this set of internals from an Eldo box but it has the earlier thrust washer rather than the needle roller on the end of the cluster shaft.

Now this bike is unlikely to ever be used in real anger but are the earlier thrust washer equipped boxes noticeably less reliable than the needle roller equipped ones or am I safe to use it? any other issues I should check?

Charlie? Anyone?

Pete

Run it. I've never heard of any issues, but then I'm more of a four-speed guy.

Title: Re: Question for the loop guys?
Post by: guzzisteve on November 08, 2016, 12:25:03 PM

The little balls work fine as long as you have oil back there.

Title: Re: Question for the loop guys?
Post by: Antietam Classic Cycle on November 08, 2016, 12:44:56 PM

Quote from: guzzisteve on November 08, 2016, 12:25:03 PM

The little balls work fine as long as you have oil back there.

Pete's asking about the thrust washers at the front of the "intermediate" shaft, nos. 40 and 41 in this drawing.

(http://www.stein-dinse.biz/bilder/auto/breite_800/4d3731300009.jpg)

Title: Re: Question for the loop guys?
Post by: dblue on November 08, 2016, 02:00:01 PM

I have never seen a failure.

Title: Re: Question for the loop guys?
Post by: Tom on November 08, 2016, 02:24:48 PM

I've only had return spring problems but never had a gear box rusted up.  Always had lube in them.

Title: Re: Question for the loop guys?
Post by: Hahnda on November 08, 2016, 02:40:03 PM

Are you switching to the Eldo shift drum as well?

Title: Re: Question for the loop guys?
Post by: Kiwi_Roy on November 08, 2016, 06:41:10 PM

Quote from: Antietam Classic Cycle on November 08, 2016, 12:44:56 PM

Pete's asking about the thrust washers at the front of the "intermediate" shaft, nos. 40 and 41 in this drawing.

 

I'm pretty sure my 72 is like that, 130,000 Miles

Title: Re: Question for the loop guys?
Post by: pete roper on November 08, 2016, 07:57:49 PM

Thanks guys. I was pretty sure it wouldn't be likely to be an issue but always best to ask those with more experience.

No, I'm not using the Eldo shift drum.

Pete