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: "Neil Lindsey" <neil@xxxxxxxxxxx>
To: "Bird, Garry" <BIRD@xxxxxxx>
Sent: June 8, 2000 9:00 AM
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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