• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

KTM 2018 250 XC-W

Crashaholic

Crashaholic

Husqvarna
Pro Class
I'm impressed with the fuel injection technology on this bike. I won't be surprised when problems arise as the first bunch hit the weekend warrior trail but I'm sure the problems will be overcome and FI will become the norm.

It has 2T oil injection system so you can fill up at a gas station like a 4T and ride off. Up to 5 or 6 tanks of gas before refilling the oil tank.

The FI sounds trick with no change in its fuel/air ratio regardless of changes in elevation. Another interesting claim about the FI is that its average 2T oil to gas ratio hovers around 80:1. They say it fluctuates from 60 to 100:1. I guess the FI is so efficient in managing all the carb adjustments and oil ratio that it doesn't take near as much oil as a carb.

The FI also creates excellent power management. Pretty cool.

2018_250-XC-W_TPI_90de_ri.jpg
 
The ktm system injects into the transfer port so a separate system to oil the crank is necessary. If things go this way my hopes of retrofitting fuel injection to older bikes is not looking very promising. I read that the intent of the 2018 era tpi is to mimic the properties of what folks are used to. Kind of like the first year of disc brakes perhaps.
 
The ktm system injects into the transfer port so a separate system to oil the crank is necessary. If things go this way my hopes of retrofitting fuel injection to older bikes is not looking very promising.
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I think the aftermarket industry is creative enough to design an FI system that injects at the intake manifold. The 2T oil will still have to be mixed with the fuel but at least the benefit of custom fuel/air mix ratios and the FI's on-the-fly variable fuel/air mix.

Can't forget the benefit when you and your bike do several cartwheels during a crash, the bike would keep running so you can just pick it up and go. :banana:
 
silverstreakNZ said:
Until they are direct injecting the fuel into the chamber after the exhaust port closes it's a just a load of wank .
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Pmsl. The air pulse pushes it back in the cylinder
Why add another injector to the equation?
That's the whole point and reason you have an expansion chamber.

Or are you trying to get them to delete the fat pipe ??
 
The pipe doesn't work at all rpms so there is still unburned fuel blowing out the open exhaust port contributing to emissions and poor fuel economy
Also expansion chambers operate on pressure waves not flow
 
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