| Author | Message | ||
     Johnboy777 |
Just read the Fuell article 'Alaskan Attraction' by Barry Hansen. Great article BTW, but in it he writes, and I quote: " As we zigzagged through switchbacks climbing ever higher, I found the Ulysses to be a veritable tractor, nearly unstoppable! Point it where you want to go, let the big twin just idle, and it was almost unnerving how the bike would climb." Climbing off-road at idle ... damn, I want one of those Uly's  . | ||
| Naustin |
I enjoyed that article as well. | ||
| Adrian_8 |
I read that too...had a good snicker...needless to say that story was in Fuell...the ULY is geared too high for much tough stuff..it will run almost 60mph in first gear and does not like to run under 20mph in first...try that is a rock field..you are one bad man...with a smokin' clutch.. "Nothing But the Truth" | ||
| Bosh |
Nahh.. You guys just have your idle set too low, that's all.  | ||
| Johnboy777 |
He must have the diesel model with the X9 gearing.  . | ||
| Growl |
Hold on about the Uly not liking to run under 20 mph... not exactly true, according to my experience... My Uly, true, does run somewhat herky-jerky between 1000-2500 RPM WHEN the load is not much, i.e. flat ground... BUT! When the bike is under load... i.e. riding 2 up climbing a steep rutted dirt road - it WILL blow your mind at how well it pulls - at idle RPM (1100) it will lug for miles without stalling if you ask it to. | ||
| California |
hmmmmmm? I wonder? I'll have to try that, it never crossed my mind to try it with a heavier load. Anyone else experience this? | ||
| Jlnance |
Yea, it pulls like a train at 1800 rpm climbing a mountain road. I dislike it at 20 mph on flat ground though. | ||
| Johnboy777 |
I've gotta try it! Sounds very cool. | ||
| Unibear12r |
Growl is correct. You can win money betting that XBs and Sportsters can pull from a stop and not stall and never leave idle rpm. You have to balance the throttle input just right but it can be done. The XB's jerkyness at low rpm and gear comes from the FI/ECM not "knowing" if you are riding or idling, two very different power requirements. Carbs have it easy here as they work off of intake vacuum. The XB's very large low end torque requires so little throttle at low rpm and low gear that the bike is not sure what you are doing. You can prove it to yourself next time you ride. Get slow in first to the point of jerking then give it just a small amount of throttle. The bike jumps up and takes off. Now it knows what to do. If the engine was really lugging and out of torque the jerk would get worse or even stall the engine. This is one of the (very) few things that a MAF in the DDFI 2 system would have helped with. | ||
| Growl |
Interesting explanation... what's MAF? | ||
| Johnboy777 |
Mass Air Flow (Sensor) IIRC, on the 5.0 that I had, the MAF calculates the amount of airflow into the engine via a wire thingy then sends this info to the ECM (computer thingy) so that it can correctly deliver the right amount of fuel to the fuel injection thingy. What I never understood is, "how do the wire knows?"..."really, how do it knows?" . | ||
| Natexlh1000 |
How the wire knows: http://en.wikipedia.org/wiki/Mass_flow_sensor#Hot_ wire_sensor_.28MAF.29 The sensor in my 1990 toyota pickup is mechanical with a spring-loaded flapper valve. It ran better after I reached in there and smacked it around to loosen up the crud  The wire sounds much more sexy than a crappy mechanical thing to me. | ||
| Ulynut |
Thats it, no more dieting. I NEED to eat those Italian pastries so my bike runs smoother.  I love Badweb! thankyou thankyou thankyou | ||
| Ozarkdennis |
It's amazing the difference a hill makes. I live a mile from pavement and getting there and back on Groucho is an adventure (bad pun). But going up our gravel driveway is a breeze because the motor does SO MUCH better under a load. And I do mean UP our driveway. We live on top of a hill and the bike will putt putt up with no hesitation, farting or bucking which can't be said for the trip to the highway. Dennis Wilson about five miles from the end of Hwy 7 in Ar} | ||
| Cityxslicker |
Forest riding is the reason I love the XB so much, dirty lil secret that there is never any cops, no traffic, no big cadillacs driven by poodleheads, stop lights, speed limits. Just me, my tires, traction, and the throttle. And of course a good dose of MUD. | ||
| Darthane |
"the MAF calculates the amount of airflow into the engine via a wire thingy then sends this info to the ECM (computer thingy) so that it can correctly deliver the right amount of fuel to the fuel injection thingy" Best explanation I've ever heard...and I've spent far too much time with the powertrain folks over at Ford.  | ||
| Rwcfrank |
The wire gets a voltage charge and maintains a set temperature. At a set temperature the wire has a set resistance. As the airflow increases the wire is cooled, as the wire cools the resistance changes and the signal is sent to the ECM. Kind of like blowing on a toaster to cool it? | ||
| Johnboy777 |
Rwcfrank: "The wire gets a voltage charge and maintains a set temperature. At a set temperature the wire has a set resistance. As the airflow increases the wire is cooled, as the wire cools the resistance changes and the signal is sent to the ECM. Kind of like blowing on a toaster to cool it." Thank you for a great explanation of that process - I never understood how that worked...John . | ||
| Etennuly |
I'm not sticking around to watch him blow his toaster! That ain't right  |
