Motus Motorcycles

Avatard · 02-13-2011, 05:02 PM

Quote:

Originally Posted by goof2

I don't care that they have chosen to go with pushrods. Lots of bikes are sold everyday with pushrod valvetrains. What I don't get is why Motus is going through the hassle and expense of gasoline direct injection for an engine that is not "high tech". As you said, this engine will not be highly refined so why are they screwing around with highly refined injection?

Probably because computer controlled engine management is the order of the day, and would keep them still relatively competitive. Me? I like the simple joys of carburetors, but it's 2011...I understand the choice.

Kerry_129 · 02-13-2011, 05:34 PM

I don't think the use of a p/r valvetrain somehow renders pointless any refinement & new-tech wizardry in the other sub-systems. It probably made more sense for them to concentrate their R&D efforts in other areas which would net them more in reaching their performance goals, given the displacement & operating range of the motor.

I think most innovations in vehicles (and machinery in general) have come about where one unique design element stands out, proves its worth, and is refined into a new 'norm' although the other elements are the same-old-same-old.

And plus-eleventy-one on how cool it would be for DFI 2-(no)smoke motors to be developed! IIRC from the little bit I read about them years ago, their at-speed emissions were good with DFI, but the at-idle requirements killed them & gives a decided advantage to 4-strokes meeting regs.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

02-13-2011, 05:34 PM	#2
Kerry_129 Semi-reformed Squid Join Date: Nov 2008 Posts: 531	I don't think the use of a p/r valvetrain somehow renders pointless any refinement & new-tech wizardry in the other sub-systems. It probably made more sense for them to concentrate their R&D efforts in other areas which would net them more in reaching their performance goals, given the displacement & operating range of the motor. I think most innovations in vehicles (and machinery in general) have come about where one unique design element stands out, proves its worth, and is refined into a new 'norm' although the other elements are the same-old-same-old. And plus-eleventy-one on how cool it would be for DFI 2-(no)smoke motors to be developed! IIRC from the little bit I read about them years ago, their at-speed emissions were good with DFI, but the at-idle requirements killed them & gives a decided advantage to 4-strokes meeting regs.