MicroSquirt.com read only forum (Jan.15,2018)

For the throttle body, since you're looking for maximum possible VE, I would look at some of the throttle designs that provide no restriction at WOT. A few years ago on the Yahoo MS group someone displayed a disc-type throttle that would not be too difficult to fab. Other possibilities are slide ...

Why wait for the microsquirt for a rotary? Unless you're talking about one of those rare rotary motorcycles? If it's for a car MS-II is likely a better fit.

Edit: Oh, are you going to use the second spark output for the trailing plugs? Now it makes sense.

Does anyone have a link to a nice explanation on PWM ?

PWM (Pulse Width Modulation) is a simple but brilliant scheme. You simply switch voltage on and off quickly enough that whatever you're driving effectively sees a fraction of the actual supply voltage. The effective voltage is the duty cycle ...

Both the pumps on eBay say they're for '03 and newer, so I guess they switched to internal in '03? Good to know.

Dr.Hess wrote:The Buell fuel pump is external/inline and made for a bike. Dunno about the HP, but should be plenty for about any bike motor. I got one with the TB/Intake.

What Buell did yours come from? The two currently on eBay are both internal pumps.

Since this is really off topic, I'll start a new thread for SOHC hondas and link it here.

http://www.msefi.com/forums/viewtopic.p ... 878#131878

In my case the victim is a Honda CB550 - way low in the alternator output department. Maybe I'll just keep the headlight off? :|




What are the chances?! I'm MSing a '74 CB550! And I too am concerned about alternator output, thus the fuel pump inquiry.

The trouble with about any new EFI ...

Has anyone come up with a source for injector connectors for these bike TBs? I'm using CBR TBs with Keihin injectors, but wasn't able to get the harness parts. Anyone have a source?

What other external pumps have been used on a motorcycle install? Those GPZ pumps are hard to find used, and are likely pretty pricey new.

It's one of the ones listed in the Megamanual, anyone seen a current draw figure for it?