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Yamaha XS650 backfire

 
 
¿
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      07-07-2009, 02:04 PM
On Jul 6, 11:41*pm, totallydeadmail...@yahoo.co.uk (The Ever Boor)
wrote:

> You don'ty get it, do you? The idea of a modern bike (and your old FZR
> is anything but) is not to make the thing easy to mend when it brakes,
> but to ensure it doesn't break *in the first place*.


And why, pray tell, have the folks at Yamaha re-designed the starter
clutch system to put it on the end of the crankshaft, where it can be
accessed more easily?
 
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Dave
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      07-07-2009, 02:06 PM
"¿" <(E-Mail Removed)> wrote in message
news:a3d1f20a-13f4-4b6d-9fa6-(E-Mail Removed)...
On Jul 6, 2:20 pm, "Dave" <dspear9...@yahoo.com> wrote:

> Unfortunately as I recall it's a helluva lot more work to get the four
> carbs
> off of the Honda... more friction and less room.


Mix about 5 ounces of xylene (a paint thinner) with 5 ounces of
acetone, about an ounce of transmission fluid and an ounce of WD40.

Save this mixture in a sealable container, you won't use it all on one
carburetor removal job.

Put some plastic sheeting under the carbs.

Paint the rubber softening mixture onto the rubber boots with a glue
brush and let it work to make the rubber more pliable.

Are there any downsides to using this? I mean, will it shorten the life of
the rubber boots? Not that I'd care... last time I had them off I was about
ready to haul the bike to the scrap yard trying to get those damn carbs back
on.

 
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TOG@Toil
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      07-07-2009, 02:10 PM
On 7 July, 15:04, ¿ <macmi...@gmail.com> wrote:
> On Jul 6, 11:41*pm, totallydeadmail...@yahoo.co.uk (The Ever Boor)
> wrote:
>
> > You don'ty get it, do you? The idea of a modern bike (and your old FZR
> > is anything but) is not to make the thing easy to mend when it brakes,
> > but to ensure it doesn't break *in the first place*.

>
> And why, pray tell, have the folks at Yamaha re-designed the starter
> clutch system to put it on the end of the crankshaft, where it can be
> accessed more easily?


On which FZR1000 have they done this, then?
 
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¿
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      07-07-2009, 02:31 PM
On Jul 7, 7:06*am, "Dave" <dspear9...@yahoo.com> wrote:

> Are there any downsides to using this? I mean, will it shorten the life of
> the rubber boots?


Yes, there is an impact on the lifespan of the rubber boots when
solvents that de-vulcanize the rubber are applied.

If the rubber is so hard you cannot remove the carbs, you need to do
*something* to soften them, or you cannot make necessary repairs.

Running a hose from your hot water heater to route very hot water over
the rubber boots is also going to devulcanize the rubber if it's hot
enough.
 
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¿
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      07-07-2009, 02:35 PM
On Jul 7, 7:10*am, "Off the Wall" <totallydeadmail...@yahoo.co.uk>
wrote:

> > And why, pray tell, have the folks at Yamaha re-designed the starter
> > clutch system to put it on the end of the crankshaft, where it can be
> > accessed more easily?

>
> On which FZR1000 have they done this, then?


They haven't done it to the FZR1000, and never will, but they did
redesign the Seca II to move the starter clutch onto the end of the
crankshaft where it belongs.

The folks at Triumph also learned their lesson about burying the
starter clutch and later designs relocated it to the end of the
crankshaft.

 
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TOG@Toil
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      07-07-2009, 03:14 PM
On 7 July, 15:35, ¿ <macmi...@gmail.com> wrote:
> On Jul 7, 7:10*am, "Off the Wall" <totallydeadmail...@yahoo.co.uk>
> wrote:
>
> > > And why, pray tell, have the folks at Yamaha re-designed the starter
> > > clutch system to put it on the end of the crankshaft, where it can be
> > > accessed more easily?

>
> > On which FZR1000 have they done this, then?

>
> They haven't done it to the FZR1000, and never will, but they did
> redesign the Seca II to move the starter clutch onto the end of the
> crankshaft where it belongs.


Ae you saying that early Seca IIs had the starter clutch in a
different place?
>
> The folks at Triumph also learned their lesson about burying the
> starter clutch and later designs relocated it to the end of the
> crankshaft.


So what you're actually talking about is completely different designs.
Not modifications of existing designs. It's not really relevant. Some
are different from t'others. And if the component is solid, it doesn't
matter *where* you locate it, really.

And yes, I'm aware that some early Triumphs had starter clutch
problems. So that's a combination of a duff component and awkward
placement. The fact rests: make it reliable to start with and who
cares?
 
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¿
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      07-07-2009, 04:14 PM
On Jul 7, 8:14*am, "An Ignoble Pain in the Ass"
<totallydeadmail...@yahoo.co.uk> wrote:
> On 7 July, 15:35, ¿ <macmi...@gmail.com> wrote:


> > They haven't done it to the FZR1000, and never will, but they did
> > redesign the Seca II to move the starter clutch onto the end of the
> > crankshaft where it belongs.

>
> Ae you saying that early Seca IIs had the starter clutch in a
> different place?


Go back and read for comprehension.

> And yes, I'm aware that some early Triumphs had starter clutch
> problems. So that's a combination of a duff component and awkward
> placement. The fact rests: make it reliable to start with and who
> cares?


*I* care, if I'm the one person in a thousand that has to tear my
motor to flinders to replace a component that is supposedly
"reliable".

I'd rather have a less reliable component that is easily accessible
and have the
replacement parts available at Wal*Mart at a bargain price.

 
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The Older Gentleman
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      07-07-2009, 06:11 PM
¿ <(E-Mail Removed)> wrote:

> > Ae you saying that early Seca IIs had the starter clutch in a
> > different place?

>
> Go back and read for comprehension.


I have. Because if they redesigned the Seca II midway through its
production run, that's quite interesting.

As we never called Yamahas Secas here it's hard to tell, but the Seca
Two is what we called the Diversion. The previous XJ600 was a *totally*
different bike.

Which rather proves my point.



--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER Coo, down to just five bikes!
If you don't know what you're doing, don't do it. And RTFM.
chateau dot murray at idnet dot com
 
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