New List Participant - very new

[Jemison Richard]

Gene,

You're a wealth of information (and a kindred spirit, ha!)  Love the "too
many wheels".  Got one of mine outside right now.  I'm not trying to market
a design - I'm looking for a "system" or component package that could be
reprogrammed or "tuned" from one bike to the next with enough of the
design/engineering completed in advance that an average enthusiast could
build himself a workable unit.

To my way of thinking (I'm way out on a limb here so don't shake) :

		common throttle bodies
		common injectors
		common sensors
		common computer controller
		common control program or "family" of programs

I just found the web page this afternoon so I have literally just found the
efi332 pc based efi and this person has done kind of what I'm talking about.
A generic solution to the problem of controlling fuel flow with electronics.

I'm also thinking about an open-loop control algorithm using fewer sensors
(temp, TPI and speed maybe).  


#############################

BTW, you are a sympathetic group.  I've had no flaming yet I just this
afternoon bumblefudded my way to the diy-efi web site and have now begun
assimilating what amounts to a lot of data, projects, (couldn't open the
archived articles for some reason).  I will try not to ask anymore questions
until I've learned what the web page has to teach me.  Sorry.  

One last point.  Mr. Grippo's efi equations are very interesting.  And now
that I've found the EFI332 software he references, maybe I can make some
sense of them :-)



> -----Original Message-----
> From:	mrvette [SMTP:mrvette at bellsouth.net]
> Sent:	Wednesday, September 30, 1998 2:46 PM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	Re: New List Participant - very new
> 
> Actually with the Jap bike you gotta be concerned with marketability if
> that is
> your goal.....how many bikes are still out there and how many customers if
> you
> advertise widely can you get to buy your product?    
> 
> as to making something like this relatively generic,       well I suspect
> bikes
> are alot like cars in this respect......and the attendant air
> cleaner/pipes/manifold problems are not any less....you need VOLUME 
> here....fine if your Honda/Yam/Harley....but you are trying to do all 3 or
> so....and with a very limited production volume...
> 
> I been there, did DPFI on my old Pontiac 455 engine....took an act of
> GOD....NOT
> a marketable thingy...just an engineering excercise on my part...GENE
> 
> Michael Kasimirsky wrote:
> > 
> > > Thank you again and your point is well taken.  What if I
> > > limit my exercise
> > > to a specific Japanese bike (actually Harley has an EFI unit)
> > > - a Yamaha
> > > XS1100 (produced 1978 - 1981)?
> > 
> > I disagree about the manifold configuration problem as it
> > relates to bikes.  If you consider inline 4 engines, they all
> > use a bank of rack-mounted carburetors.  A motorcycle
> > EFI system could easily use (and the aftermarket ones
> > do just that) individual throttle bodies that are rack-mounted
> > just like the carbs.  With a basic casting, you could bore
> > them to various diameters, depending on engine size, and
> > rack them at various distances to match different cylinder
> > head configurations.
> > 
> > If you can't guess, motorcycle EFI is my main area of
> > interest as well.  Cars have too many wheels, not to
> > mention they lean the wrong way in corners.  :-)
> > 
> > Michael Kasimirsky            1990 Yamaha FZR400 Superbike Racer
> > Loki Motorsports              1993 Kawasaki ZX1100D1 Streetbike Rider
> > FASTTRAX & WERA Novice #22  Sponsored by Loki Motorsports, Bridgestone,
> > mtk at tmc.astm.cmri.cmu.edu        Street & Competition, and AGV.
> 
> -- 
> 
> 
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