Fw: Throttle response during downshifts

["Neil Lindsey" <neil@xxxxxxxxxxx>]

I don't think this response/message got posted to the ST list, so here it is

- ----- Original Message -----
From: "Bird, Garry" <BIRD@xxxxxxx>
To: "'Neil Lindsey'" <neil@xxxxxxxxxxx>
Sent: June 8, 2000 9:19 AM
Subject: RE: Throttle response during downshifts


> Hi Neil:  I've got the latest tune in my bike and the 'glitch' remains.  I
did ride a friend's Speed Triple just the other day and didn't notice it
happening with his bike.  I might have to take it for another spin.  Maybe I
was keeping the RPM's higher and didn't notice.  If it doesn't, then I will
likely pursue Triumph for a fix.
>
> >So I assume that you would suggest not bothering to try a more recent
tune?
> By all means, go ahead and have the latest tune installed.  Especially if
the dealer can do it while they are doing other work on your bike.  That way
they shouldn't charge you for it and you get the benefit of the latest
modifications to the program.
>
> >What was Triumph's official response or did you simply accept the word of
one mechanic.
> Well, since I had already let my local dealer go over the bike to cure
this ailment and everything checked out 100% and then another mechanic 2000
miles away tells me that the 'ST's' have this glitch and that's the way it
is I tend to think that maybe it is a glitch that is inherent in the fuel
injection system.
>
> You're right about asking Triumph for a fix.  We should.  Problem is, they
take so damn long to do anything or even respond that I choose not to waste
much of  my energy on this particular problem...I've adapted my riding
around this little problem and it really doesn't cause me any problems.
>
> One thing, I was considering installing a Dynajet computer for some added
performance and as a bonus it may even solve this situation.  Maybe.
>
>
> Garry Bird
> bird@xxxxxxx
>
>
> -----Original Message-----
> From: Neil Lindsey [mailto:neil@xxxxxxxxxxx]
> Sent: Thursday, June 08, 2000 10:01 AM
> To: Bird, Garry
> Subject: Re: Throttle response during downshifts
>
>
> Garry,
>
> After reading those posts I agree that the stepper motor may have a lot to
> do with the symptoms I've noticed.  I was disappointed however, that no
cure
> ever came out of it.  BTW, my bike doesn't stall when this problem occurs.
> The downshift just occurs abruptly as it would had I not bothered to
attempt
> to match engine rpm to tranny.  I do find it quite annoying and, given the
> right set of circumstances, I can imagine that it could be a bit
dangerous.
>
> I'll test your workaround anyway.  If this is inherent to the bike then
I'm
> really surprised that more people haven't mentioned it.  So I assume that
> you would suggest not bothering to try a more recent tune?  If this
'glitch'
> cannot be be programmed out, does this necessarily mean that nothing else
> can be done?  What was Triumph's official response or did you simply
accept
> the word of one mechanic.  I've talked to one mechanic in Washington state
> that doesn't believe that 'they all do it' or that it can't be cured.
>
> And, as was mentioned in these archived posts, I've also noticed the
> 'bumpiness' of the engine at low rpm while decelerating or riding with the
> throttle at a minimum.  If that's caused by the same thing, all the more
> reason to ask Triumph for a fix.
>
> Neil
>
>
>
> ----- Original Message -----
> From: "Bird, Garry" <BIRD@xxxxxxx>
> To: <neil@xxxxxxxxxxx>
> Sent: June 8, 2000 7:27 AM
> Subject: Throttle response during downshifts
>
>
> > Hey Neil:  Take a look in the searchable archives for either "dead
engine"
> or "stepper motor".  If you look at "stepper motor", you will find a note
I
> posted as a response to someone's query as to why their motor went dead on
> them.  It was my best guess and it has happened to me a few times.  I can
> also say that when I was in LA at SouthBay Triumph, the mechanic commented
> that they all do it and it is a 'glitch' that can't be programmed out.  My
> cure is to keep the throttle just a tad above idle when downshifting.
This
> will keep the fuel injection system off of the idle circuit and in the
main
> circuit.
> >
> > Garry Bird
> > bird@xxxxxxx
> >
> >
>


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