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Topic: Any reason the enclosed chain drive never caught on other than the obvious?  (Read 3684 times)

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« on: March 05, 2012, 06:59:19 PM »

And by obvious, I mean the fact that it was "ugly" and a lot of people buy bikes for looks.

For those that don't remember or haven't seen it - here's an example of the system used on the Virago back in the 80's.



Anyway, it seems to me that keeping the chain in an enclosed system filled with grease makes a lot of sense, and the longevity would be way more. Other than looks, the only issue I see is adjustments being a pita. I had totally forgot about these until someone mentioned them in a convo a few days ago.



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« Reply #1 on: March 05, 2012, 07:15:11 PM »

Doesn't one of the newer BMWs have an enclosed chain?
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« Reply #2 on: March 05, 2012, 08:03:42 PM »


Doesn't one of the newer BMWs have an enclosed chain?


Only the scooter that I have seen..

http://www.totalmotorcycle.com/motorcycles/2012models/2012-BMW-C650GT.htm

Quote
The secondary drive to the rear wheel is transferred over a roller chain with 72 links and 525 pitch. This runs fully encapsulated in the oil bath (750 ml SAE 90) and therefore needs very little maintenance.
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« Reply #3 on: March 05, 2012, 08:12:00 PM »

Know what would be cool?   An exposed shaft drive.  Lol
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« Reply #4 on: March 05, 2012, 09:10:31 PM »


Know what would be cool?   An exposed shaft drive.  Lol


Like BMW or Yamaha?
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« Reply #5 on: March 05, 2012, 09:19:07 PM »




Like BMW or Yamaha?


The only difference is the Yamaha doesn't fail.
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« Reply #6 on: March 05, 2012, 09:23:59 PM »


Know what would be cool?   An exposed shaft drive.  Lol


Scott would really enjoy an exposed shaft.
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« Reply #7 on: March 06, 2012, 07:17:55 AM »

That drive looks just right with the ugly tail and seat. EEK! Lol
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« Reply #8 on: March 07, 2012, 06:17:55 AM »

Most of the old utilitarian bikes had them-BSA, MZ, Honda CG125 and c90. Guess its a fashion thing.
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« Reply #9 on: March 07, 2012, 08:44:35 AM »

I had that on an old ATC, though it wasn't bathed in oil. Let me totally forget about chain maintenance. By the time I got the courage to take it apart and look, everything was junk.
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« Reply #10 on: March 07, 2012, 03:01:07 PM »

HD had enclosed chain on two models in the 80s. Worked well enough, kept the gronk off the chain and the back end clean; the issue was the amount of time it took to change a chain/sprockets/tire.  And eventually the boots would crack and leak.
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« Reply #11 on: March 08, 2012, 11:16:20 AM »

An enclosed chain, with regular fluid changes, would last indefinitely.  
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« Reply #12 on: March 08, 2012, 12:37:55 PM »


An enclosed chain, with regular fluid changes, would last indefinitely.  


+1, look at how long the chains inside a automatic car transmission last.  I have 130,000 miles on mine with no breakage, yet!    Bigsmile
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« Reply #13 on: March 08, 2012, 12:55:33 PM »


I had that on an old ATC, though it wasn't bathed in oil. Let me totally forget about chain maintenance. By the time I got the courage to take it apart and look, everything was junk.


The axle bearings in those units would fail before the chains wore out.
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« Reply #14 on: March 08, 2012, 02:33:55 PM »

Just a thought about the pic of the Yammy posted.

It's amazing the direction Yamaha went with that motor/bike platform.

Looks like they had something cool there going and it turned into this eventually>


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« Reply #15 on: March 08, 2012, 09:37:17 PM »


Just a thought about the pic of the Yammy posted.

It's amazing the direction Yamaha went with that motor/bike platform.

Looks like they had something cool there going and it turned into this eventually>





Actually...they're different bikes. The bike in the OP isn't a Virago, its probably an XV920RJ.
ALL Viragos were shaft drive. 700, 750, 980 & 1100. The RJ was a 920 and only imported
for 2 or 3 years; 82 & 83 I think.
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« Reply #16 on: March 13, 2012, 01:08:03 AM »




Actually...they're different bikes. The bike in the OP isn't a Virago, its probably an XV920RJ.




Right - dude knows that.  He was talking about how the bike could have evolved into something awesome, instead, it devolved into that POS Viagra.
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