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Old 24-05-2016, 01:27 PM   #31
Dukedesmo
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Quote:
Originally Posted by RossObey01 View Post

Any opinions on if aluminium will be good enough? It's not got to take much impact, especially on a 750, it's just a guide.
I wouldn't trust aluminium especially that thin, if the chain should break and 'catch' the ally it will then bunch up into it. Consider the power/speed that the chain could be going at - it's most likely to break on full power.

Might help? but stainless is much stronger and harder so far less likely that the chain will catch it.

Get the ally part to fit and then use it as a template for the stainless.
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Old 24-05-2016, 01:33 PM   #32
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An ally case saver is better than no case saver and will probably work in a % of situations but SS would be preferable.
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Old 24-05-2016, 03:00 PM   #33
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Just as I thought, thanks. I'll use it as a template.
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Old 24-05-2016, 04:13 PM   #34
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Oh great another fun little thing to fabricate and tinker on in the garage! Ok now where to get a small piece of stainless steel...
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Old 24-05-2016, 04:34 PM   #35
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you'd get a couple out of 100mm width of this http://www.ebay.co.uk/itm/Titanium-T...LMQuucys-Rlrxg
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Old 24-05-2016, 05:49 PM   #36
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Nice work so far Ross..

Mild or stainless steel are favorite materials. 1.6mm thickness sounds ideal.

Not sure I would trust ally myself, but it might work?

It will be nice and soft and easy to bend as a pattern, so nothing lost.

Bear in mind that the 5 speed 750 cases differ from the 6 speed 900's, so be prepared to make some alterations as my pattern is for a 900.
I am given to understand that it's a bit tighter inside the 750 and more so on the 600, so if you find that the pattern needs some significant changes please post them on here if you can find something that works.

You may have also noticed that on Dirty's 'saver on an earlier post here, that his tabs are staggered...So something else to look out for.

Good luck...

(P.S. Just noticed that this thread has become sticky...Cheers Rob?)
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Old 22-03-2018, 10:55 PM   #37
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Revisted for a bump must do mine.
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Old 02-02-2020, 10:33 AM   #38
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Do you still have the drawing @Mr Gazza as it seems to have evaporated?
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Old 02-02-2020, 10:51 AM   #39
Mr Gazza
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Sorry about that. I'm afraid after 5 years I can't find any trace of it, but the actual saver is still doing sterling service.
I will hoik it out for a clean today and try and re-draw it.
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Old 02-02-2020, 10:55 AM   #40
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And while this thread is active, I'll add a note on fitting a saver to 750 cases.
This applies to later type 750 cases with external clutch slave.
I managed to squeeze a proprietary case-saver behind my std, 15T gearbox sprocket but it was damn tight.
Occasionally I reckoned I could hear the chain scraping the saver when the engine was on the overrun and the top run of the chain was slack.
Witness marks on the saver confirmed this.
However, I decided that it wasn't a major issue and left things as they were.
Then last year, as I was about to set off for the TT, I noticed a couple of shiny,worn areas on the chain where the saver scraping had been most severe .. possibly due to a minor tight spot in the chain, even though the chain was generally in decent condition.
Having no time to investigate further, I crossed my fingers and set off for the Island.

Luckily, when the chain snapped I was only 50yds from my tent at Kirkmichael.

I have since resorted to fitting a 14T gearbox sprocket and there are now no more clearance issues between chain and casesaver.
In the light of my experience I would not recommend fitting a casesaver to late 750 cases if the std 15T sprocket is retained.
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Old 02-02-2020, 11:21 AM   #41
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Would it be too 'thin' in depth if you ground it to get a little more clearance?
Randomly thinking of you made two little bosses for the sprocket cover mounts then used a bent rod it ought to be quite compact and functional.
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Old 02-02-2020, 01:18 PM   #42
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New drawing added to first post.. Photos coming...

I haven't had the cover off for a while and there was a fair bit of gunk in there! But the mild steel saver that I first made in a big hurry nearly 6 years ago, is in perfect nick.. No need for exotic metals if you lube your chain every now and then.

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Old 03-02-2020, 09:30 AM   #43
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Darkness - I'm sure I've a copy of the drawing on my home PC? I'll have a looksee when I get home..
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Old 03-02-2020, 09:47 AM   #44
Mr Gazza
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Well done for saving that Boris.
I would be interested to see my original, to see if it matches the drawing I just did, measured from the original saver, complete with spelling mistakes! (See post #1)
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Old 03-02-2020, 12:28 PM   #45
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I have one on my EVO and from memory it was an exact fit after taking it off my S4RS.
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