Topic: 1977 Honda CB750A supercharged/fuel injected.....Burn-out video

[23tbucket]

Well, I have been riding the bike for a bit. A few minor problems, but all in all I am pleased. I haven't had to push it home yet...always a good thing on something you've been building for two years.

Here is a video of the bike still on the lift...still programming the "Microsquirt" stuff. You can sure hear the blower whine. The idle is not perfect yet....it is so finicky to set...just a small change in the throttle opening and the blower pumps too much air...the rpm's drop...the map changes...the timing changes...back and forth...all the time the computer is trying to correct things...crazy stuff!! A natural aspirated fuel injected engine is a piece of cake to tune compared to this sob.
1977 Honda CB750 A supercharged/fuel injected tuning

I installed a new program (Tuner Studio) for tuning the microsquit. It is easy to datalog the running engine and carefully study the graphs and make systematic changes wherever they are needed. I highly recommend all you fellows doing fuel injection using the Microsquirt to download this amazing tool.
http://www.efianalytics.com/TunerStudio/

Enough gibberish.......Allthough burning up an old tire was a ton of fun...it served an essential purpose for me. I needed to datalog the engine under load and at various rpm's (Canadian redneck dyno!!lol). I had the bikes ecm hooked up to the laptop and was datalogging all the time during this episode. I tried real hard to get most of my logging around 3000 rpm's to 5000 rpm's...where most of the driving would be, but the engine kept breaking loose!! The highest rpm I took the engine too was 6500 rpm....anything over that I would keep things on the rich side anyway. I got some excellent data in the two short burnouts. The highest boost I had was 5.4 psi...which is perfect for what I wanted. I have my programming very close "up-there" lol...just a bit more things to do to starting, idling and idling under load (shifting into 1st or 2nd). All in all I am one happy Honda mfr.
..........Enjoy.............
1977 Honda CB750A SOHC Supercharged and electronic fuel-injected

[MasterChief750]

magnificent

[Dyrden]

Epic

[ozcaferacer]

Damn you hosers know how to have fun!!!!
By the way, that guy is wearing what looks to be the bottom part of a standard Aussie suit ........ from the Karl Lager collection

AND, thanks for all the great info you've shared 

Well, I have been riding the bike for a bit. A few minor problems, but all in all I am pleased. I haven't had to push it home yet...always a good thing on something you've been building for two years.

Here is a video of the bike still on the lift...still programming the "Microsquirt" stuff. You can sure hear the blower whine. The idle is not perfect yet....it is so finicky to set...just a small change in the throttle opening and the blower pumps too much air...the rpm's drop...the map changes...the timing changes...back and forth...all the time the computer is trying to correct things...crazy stuff!! A natural aspirated fuel injected engine is a piece of cake to tune compared to this sob.
1977 Honda CB750 A supercharged/fuel injected tuning

I installed a new program (Tuner Studio) for tuning the microsquit. It is easy to datalog the running engine and carefully study the graphs and make systematic changes wherever they are needed. I highly recommend all you fellows doing fuel injection using the Microsquirt to download this amazing tool.
http://www.efianalytics.com/TunerStudio/

Enough gibberish.......Allthough burning up an old tire was a ton of fun...it served an essential purpose for me. I needed to datalog the engine under load and at various rpm's (Canadian redneck dyno!!lol). I had the bikes ecm hooked up to the laptop and was datalogging all the time during this episode. I tried real hard to get most of my logging around 3000 rpm's to 5000 rpm's...where most of the driving would be, but the engine kept breaking loose!! The highest rpm I took the engine too was 6500 rpm....anything over that I would keep things on the rich side anyway. I got some excellent data in the two short burnouts. The highest boost I had was 5.4 psi...which is perfect for what I wanted. I have my programming very close "up-there" lol...just a bit more things to do to starting, idling and idling under load (shifting into 1st or 2nd). All in all I am one happy Honda mfr.
..........Enjoy.............
1977 Honda CB750A SOHC Supercharged and electronic fuel-injected

[Syscrush]

I can't see the vid at work, can't wait to check it out at home!

BTW - I didn't realize you're in Canada - I thought you were in Sweden or something for some reason...

[750essess]

MORE BEER! lol. very nice.

[curemode2002]

That is freaking awesome! and I love seeing an old school chopper to boot.

[Syscrush]

Love the redneck dyno!

Please, do me a favor, though, and paint that alternator black.  The bike looks so awesome overall, and that thing really sticks out as it is now.

[lordmember1969]

More beer  I love the burnout Seems like you guys are having a lot of fun...