Jump to content

MentalGuru

Members
  • Content Count

    25
  • Joined

  • Last visited

  • Days Won

    2

MentalGuru last won the day on February 28 2015

MentalGuru had the most liked content!

Community Reputation

26 Excellent

About MentalGuru

  • Rank
    Member

Profile Information

  • Location
    Wisconsin
  1. MentalGuru

    PR: Honda Releases Details on 2016 CRF1000L Africa Twin

    It's suprizing how much the Africa Twin is like a KTM 950/990 Adventure The current base model Africa Twin weighs the same wet as the last 990, it's supposed to have fully adjustable suspension like the 950/990, is a water cooled twin like the 950/990, has 18R/21F like the 950/990 off road versions and it provides the same horsepower as the 950 except it's fuel injected like the 990. I found the comparison to be quite interesting.
  2. MentalGuru

    PR: Honda Releases Details on 2016 CRF1000L Africa Twin

    I think I'm going to buy a standard CRF1000L in the spring and sell my off road bikes. I want the clutch and manual shifting for sure.
  3. MentalGuru

    The Africa Twin is Back: CRF1000L Africa Twin Confirmed for 2015

    http://www.gizmag.com/honda-2016-crf1000l-africa-twin/38614/pictures#1
  4. MentalGuru

    The Africa Twin is Back: CRF1000L Africa Twin Confirmed for 2015

    http://www.motorcyclenews.com/news/new-bikes/2015/july/video-honda-africa-twin-revealed/
  5. Just curious about something? What's the load rating of that trash can?
  6. MentalGuru

    Fuel Injection Basics

    I'll start with the basic components and try to explain how this system operates from there. Here's an component abbreviation table MAP = Manifold Absolute Pressure Sensor The MAP sensor is used to read Barometric pressure at key on. It monitors engine vacuum which it used to determine engine load by comparing it to the TPS reading. This would be how the ECM checks altitude also. It may also sense altitude change at WOT if programed to so. TPS = Throttle Position Sensor The TPS sensor tells the computer what position the throttle is in. It's as simple as that. CTS = Coolant Temperature Sensor The CTS sensor provides the engine coolant temperature using a voltage reading, transmit it to the ECM. O2 = Oxygen Sensor The O2 sensor monitors the oxygen level(air/fuel ratio) in the exhaust so the computer can adjust as need when in closed loop mode once heated by the exhaust. The sensor outputs voltage about how much 02 present in the exhaust. (used by the ECM for monitoring combustion efficiency). They allow the electronic fuel injection to operate in a closed loop system improving emission control and fuel economy dramatically. They help determine, in real time, if the air–fuel ratio of a combustion engine is rich or lean. Since oxygen sensors are located in the exhaust stream, they do not directly measure the air or the fuel entering the engine. Instead they measure the amount of oxygen in the exhaust after combustion. The information supplied from oxygen sensors is coupled with information from other sources, it can be used to indirectly determine the air-fuel ratio. Closed loop feedback-controlled fuel injection varies the fuel injector output according to real-time sensor data rather than operating with the predetermined (open-loop) fuel map. The O2 sensor used in this system is normally a narrow band type O2 sensor IAC = Idle Air Control valve/stepper motor The IAC is a air bypass valve that is used to control the engine speed at idle. The throttle body allows a predetermined amount of air past the throttle blade and the IAC controls the extra air flow needed to reach the correct idle speed and prevent stalling. The IAC is a stepper motor that allows extra air into the engine to control the idle speed. The throttle closes slightly further which decrease emissions on deceleration. When the RPM drops low enough the IAC takes over to control the idle speed. There is a minimum air flow specification that the throttle stop screw is adjustment determines. It is preset by the factory and may be painted so tampering can be determined. CPS = Camshaft Position Sensor The CPS identifies the camshaft position, can be used to sense when the engine fires. CKP = Crankshaft Position Sensor The CKP sensor identifies the crankshaft position, RPM and can be used to sense when the engine fires (or even misfires). IAT sensor = Intake Air Temperature sensor The IAT monitors the air temperature going into the engine. Cold air is denser and has more oxygen in it. It is used in combination with the other sensor values to help determine the correct air/fuel ratio. ECM/PCM = Engine/Powertrain Control Module EEPROM = Electrically Erasable Programmable Read Only Memory The part of the controller that stores it's memory. MIL = Malfunction Indicator Lamp (aka check engine light) DLC = Data Link Connector The connection used to extract codes or sensor readings and perform reprograming. OBD = On Board Diagnostics. The tests and parameters the ECM uses to establish DTC's DTC = Diagnostic Trouble Code BAS = Bank angle sensor The Bank angle sensor monitors the bikes angles and shuts it off when crashed. It is designed for safety where in if the bike is laid down or in a roll over, the fuel pump is shut down so as not to potentially cause a fire. VSS = Vehicle Speed sensor Monitors vehicle speed. Open loop is when the engine is monitoring the sensors and running on base programing. Closed loop is when the engine is monitoring the sensors and adjusting as needed to maintain the "desired" air/fuel ratio to achieve complete combustion. The controllers and sensors normally use a 5 volt circuit just like automotive sensors do. The principles of operation are also the same. A high impedance digital volt/ohm meter should only be used when testing is done. Note: Do not use a analog meter or low impedance meter for testing. System damage may result... System operation There are multiple open and multiple closed loop cells. In open loop the ECM monitors the TPS, MAP, CKS, IAT and the CTS sensors mainly and the engine runs on the just the compensation tables programed in each memory cell. It uses these values to determine what base programing cells in the computer to use for the current conditions present. In closed loop operation the ECM also monitors the O2 sensor, using it to provide the information the computer needs to achieve the desired air fuel/ratio results to meet the ECM goals for the compensation tables in each memory cell. It does this by adjusting by the short term adaptive memory and long term adaptive memory as needed to the reach these programed operational goals. Adaptive memory is the computers ability to adapt to and remember what is needed to achieve the desired air/fuel ratio in closed loop mode. It has the ability to add or subtract fuel as needed. The ECM monitors the short term adaptive memory adjustments and converts them into long term adaptive memory adjustments so it will retain its ability to meet the desired operational goals that are programed quickly by storing adjustments for your next ride. Short term memory is quick and volatile, constantly changing as needed. It isn't stored after engine shut down During mid to full throttle operation the ECM reverts back to open loop mode since the O2 sensor is unable to read the air/fuel ratios needed at this time. Some systems also operate in open loop at idle. . The live adjustments done by the adaptive memory are kind of like having a tuner along for the ride to make adjustments as needed for maximum fuel economy. It is quite difficult to program a plain set of compensation tables to run correctly in all conditions. Adaptive memory can subtract or add fuel to meet the operation goals exactly. Without adaptive memory the compensation tables are more of a close enough type of system which wouldn't be viable to use to achieve as accurate state of tune, low emissions and maximum fuel economy. Hopefully this information will come in handy when modifications are performed to the engine for performance and tuning reasons. Reprograming is necessary for many modifications or to adjust the power delivery by changing the open loop memory tables as needed.
  7. MentalGuru

    XLADV Project Bike: KTM 990

    You might want to try out a MME clutch Clever Lever. http://xladv.com/reviews/product/742-midwest-mountain-engineering-clever-lever/ Great thread btw, I'll be following it closely.
  8. MentalGuru

    Midwest Mountain Engineering Clever Lever

    I was looking for a different clutch for my KTM since I like to use shorter two-finger unit. In my search I came across the Midwest Mountain Engineering (MME) "Clever Levers". I was very intrigued to read about the unique clutch lever design that MME uses. I suffer from carpal tunnel syndrome and have also had some issues with arm pump while riding trails that requires lots of clutch use. Their lever is touted as being engineered to reduce finger/hand fatigue and arm pump, so I figured that I had little to lose by giving it a shot. I reviewed it on my off road bike which uses the same Magura clutch lever that the KTM 620, 640, 690, 950 and 990 Adventure bikes do. Product Overview Midwest Mountain Engineering Clever Lever has a slightly wider and flatter lever finger profile for improved comfort and reduced blistering as well as being a true shorty lever designed for one or two finger use. Depending upon how you orient them on the handlebars, three finger operation is also possible. The clutch lever uses a shorter pivot-to-pivot design to reduce pull by 50% by increasing the leverage applied to the hydraulic clutch master cylinder. The levers are made from 6061 T6 billet aluminum while the clutch pivot bracket and hardware are stainless steel. Both levers have AMA approved balls on the end and fit many off-road motorcycle models from KTM, Husaberg, and Husqvarna. MME includes a one year warranty against defects and workmanship, but also have a customer satisfaction guarantee. The lever assemblies are manufactured in the USA. When I received the MME lever, I found them to be well built, the black anodized finish looks nice, and the length seemed to be correct for a purpose built two finger lever. All things considered, they are probably some of the nicest set of shorty levers that I've seen and I expect them to last. While they are not folding levers that protect against breakage, their short length offers some protection itself and when run in conjunction with hand guards (as I do), I expect them to stand-up to typical bumps & bruises without too much issue. . Installation Installation of the levers is pretty straight forward. The included installation and adjustment instructions for the clutch lever are well detailed. Installation only requires basic hand tools, but did use Loctite on the fasteners and the adjustment screws. The clutch lever reuses the factory bushing and hardware. The clutch adjuster mechanism is built in and uses a 2mm Allen wrench for adjustment (not included). I have large hands and was able to easily dial in a position that felt correct for my use while allowing the proper clutch engagement. Performance For testing, I did a variety of riding that included some woods on a buddy's 100 acres property. Much of this riding is "make your own trail" type riding, so the clutch received quite the workout. Out of the gate, I noticed a dramatic difference in clutch feel and action. There is simply noticeably less clutch pull required, with both levers operating positively and felt good in my fingers. The clutch lever also seems to have made feathering the power more precise and controllable, something that is pretty handy for more technical trails. As mentioned earlier, I suffer from the symptoms of Carpel Tunnel and a bit of arm pump. While the MME lever didn't magically erase these issues, I did notice a reduction of pain and arm pump symptoms that allowed me to ride more comfortably for longer periods of time when compared to my stock lever. This alone is a big win in my book. Pros True two finger operation. Comfortable ergonomic design. Reduced clutch lever pull. Improved clutch feel and control. Made in the USA Cons None foundBottom-line I'm very happy with the feel and performance of Midwest Mountain Engineering Clever Lever and it seem to lives up to the manufacturer's claims. It is well built and offers benefits that I was not able to find with competitive units. Whether you're an arm pumper, someone that suffers from hand issues, or you simply want to ride longer & harder, I'd include these levers on your short list. I will definitely recommend them to my riding buddies. I'm looking for a KTM 990 and will definitely be adding the MME clutch lever to it. http://www.midwestme.com/productinfo.html
  9. 1 review

    Innovative clutch levers engineered to reduce both finger fatigue and arm pump thus increasing endurance during high intensity conditions. The Clever’s compact length allows for either a one or two finger operation. With its easy set up and minimal installation time these levers provide a distinct advantage to any type of rider or racer over all other stock and after market levers.
  10. MentalGuru

    The Africa Twin is Back: CRF1000L Africa Twin Confirmed for 2015

    More at http://www.motorcyclistonline.com/more-2016-honda-crf1000l-africa-twin-news-patent-photos-leaked-adv-adventure-touring-to-speed?image=1
  11. MentalGuru

    The Africa Twin is Back: CRF1000L Africa Twin Confirmed for 2015

    Check out this link. http://www.motorcyclistonline.com/spy-shots-photos-2016-honda-crf1000l-africa-twin-all-new-adventure-touring-motorcycle-adv-first-look?cmpid=enews060215&spPodID=030&spMailingID=22761200&spUserID=NjMwODY3MTcxNDgS1&spJobID=580182499&spReportId=NTgwMTgyNDk5S0
  12. MentalGuru

    XLADV Project Bike

    Like ship it to other members for a full shakedown test.
×