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About John

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  1. John

    More GPS advice...

    I guess you first must decide what you expect to do with the unit. Do you need autorouting? This is useful if you travel to unfamiliar areas. With my 60 CSX, I simply input an address and the unit will autoroute me to the destination. Downside, routing is not always the quickest or shortest, and the unit gets annoying when you go off it’s selected route. This feature has been very useful on several occasions, but it does not replace a paper map or common sense. It also calculates time of arrival, distance to destination on road mileage, not as the crow flies. I can call my wife and tell her I’ll be at home at 10:15 pm and be accurate within a minute or two. The mileage calculation is also useful when pulling my fifth wheel camper deciding fuel stops. It also contains a database of services (fuel, restaurants, tire places, etc.) at each interstate exit. It requires a large data card to hold the info for multiple states or large regions, but the cards are not that expensive. Mapsourse software is needed to download topo maps for serious offroading. City Select software is needed to download street and address data. More expense, but more capability. The Rino units, which can transmit position to another similar units sounds neat, but I wonder how useful that feature is in the real world. Riders always get separated during our dual sport rides. We carry FSR radios and by the time someone is lost and both parties realize it and get radios out, we are out of range. Line of site limitations will affect the radio transmit/receive functions of the Rino. One salesperson I talked to said the radios worked thorough the satellites like the GPS; she was wrong on that count. The max 14 mile range is in perfect line of site conditions; you’ll be lucky to communicate over a mile or two, less in mountainous terrain. Do you intend to use a handlebar mount on your motorcycle? A lot of units will not stay on due to vibration and will to be hard wired to the motorcycle battery to function reliably. Does his bike have a battery? Define the mission for the GPS and then look at prices for units that perform those functions.
  2. John

    More GPS advice...

    ttristenrides, what is your budget for the GPS purchase? As usual there are also accessories to consider which give the unit more capability.
  3. John

    More GPS advice...

    I gave my son my well used Garmin GPSIII+, a unit which still worked great but had limited memory. I looked at the Garmin 60CSX and 76 CSX. I ended up with the 60 CSx, the unit was slightly cheaper and came with a smaller memory card than the 76. I used the difference to buy a large 1 gig card which will hold a tremendous amount of memory, both City Select and Mapsource. The X model uses a newer GPS engine which is supposed to initialize quicker and work better under tree cover. I have been very happy with the unit, it survived a Moab trip this spring. Read about the units at the garmin site and at http://gpsnow.com/gmmap60csx.htm. Mine was $399. They still advertise this price but now with a $50 dollar rebate from Garmin.
  4. If my bike, I would first make sure the rear brake reservoir is not over filled with brake fluid. Remove the cap on top of the master cylinder, then back bleed the brake by placing your knee on the brake, grab the rear tire with both hands and force the piston back into the calipers. Be careful doing this without the cap removed, I saw someone pop the sight glass out of the master cylinder because there was no space in the tiny master cylinder for the fluid. The brake pads are now no longer touching the rear brake rotor and the tire should spin freely, slowed only by the Resistance of the chain. if the chain if adjusted freely, the rear wheel should spin quite easily and you can tell if the problem is in the brake or something to do with the chain/sprockets. Another problem to check is a foreign body, usually a stick or rock stuck in the lower chain guide by the wheel. I have had sticks jammed into the guide with unbelievable force and removed the stick with great difficulty. I have also seen sticks and rocks stuck in the brake caliper. A warped or bent sprocket can also make the tire hard to rotate.
  5. John

    Fuel Mileage 05' KTM 450 EXC

    As stated by Jeb, fuel mileage will vary greatly, depending on riding style. I run mine on reserve in enduros because I have had an '02 520 go dead in site of a check and it took time to switch to reserve and start the bike when the carb bowl was empty. At a mud race last year I ran out of fuel 32.6 miles into a 36 mile section on an '04 450. The bike has JD jetting and the squirt time has been decreased by Dwight Rudder to about 1 second. The same bike has gotten around 50 mpg out west dual sport type riding. My rule now is to never start a race without the tank filled to almost overflowing, and never ever pass a gas available without taking a sip. The petcock location is very efficient, there wasn't a drop of fuel in the tank when it went dead; it started missing a couple of hundreds yards before it went dead. After removing the tank for maintaince following multiple races, I had noticed the tank was very light and I suspect I had come close to running out before but had been lucky. That's the problem with luck, it ain't dependable.
  6. Picture of Dwight in article on ISDT Vets. Reunion Ride, pg. 39, Dec 1 issue. The caption says Dwight had the full vintage look. Heck, Dwight always has a vintage look, even when he's not around a vintage motorcycle!
  7. John

    Pre Ride Enduro Prep for the body

    condog_aus, I agree most people will replinish lost sodium through diet after exercise. I thought the problem was replacement during continued exercise. The reliance on sports drinks has always been a problem for me when I look at their electrolyte concentrations. Orange juice and Sunny Delight seem a better sports drink than the "true" sports drinks. I often wonder who is the real marketing target for these so called sports drinks. Sure the advertisements demonstrate pro or endurance atheletes sweating orange or green and we certainly must drink the same drink as Michael Jordon. But doesn't make you wonder when their own website reveals they are not that much different than orange juices? Let's say there are probably tens of millions of bottles of sports drinks in convience and grocery stores across America and Australia. Who is buying this stuff? Are there that many endurance atheletes on the verge of dehydration and cramping emptying the shelves of these stores every weekend? No, but probably a lot of soccer moms and weekend endurance golfers. My 80 yo parents have Gatorade in their refrig. Why, they like the taste and I am sure it refreshes them after a walk to the mailbox. The number one requirement for these sports drinks is to taste good so they move off the shelves. If 6 yo soccer players and nursing home residents won't ingest these drinks, they will not last on the market. Yes they have a dash of electrolytes, but they offer no significant potential for replacement if you are already cramping and there still 50 miles or 3 hours left in a race. I agree 100% that training and heat conditioning is extremely important. But when young, well conditioned A and AA riders cramp despite significant fluid replacement, something is clearly missing from the equation. A quick attempt at finding the reference from Cedaro, Hineman & Hineman, Rushell & Pyke, Davies et al, and others was unsuccessful. Please supply the journal and vol. #, I am interested in reading the article.
  8. John

    using front brake

    I tell new riders that the front brake stops you, the rear brake turns you. If riding with a group of mixed A, B, C and beginner riders; you can classify the riders by the heat in the front disc rotor. When I do this with a group of riders after a tight woods section; the A rider's disc is still too hot to touch when the slower riders arrive. The B riders will have a little heat in the front disc, the C riders will usually have a cold disc. (The AA rider's rotors are cold, they don't use any brakes!)Try this sometime. One of the keys to riding is the ability and confidence to use the front brake effectly. velosapiens description is a perfect example of trail braking into the apex of a corner; whether road racing cars, motorcycles, or dirt bikes.
  9. John

    Pre Ride Enduro Prep for the body

    Good topic about fluid and sodium replacement. I decided to run some numbers on possible sodium replacement. Don’t take my word for this data, this information was easily found with several Google searches. An estimate on sodium concentration in sweat: 2.25-3.4 grams/ liter of sweat. I have personally documented weight losses of over 5 pounds during hot weather, 95 degree/ 90 % humidity conditions. I believe the water loss is actually larger because fluid was consumed during the enduro and this additional fluid intake was not counted or weighed. Weight loss is from a scale I carried in a motor home to races. One liter weighs 2.2 pounds, or 5 lbs./ 2.2= 2.72 liters of sweat loss. Assuming 3.4 grams of sodium loss per liter of sweat suggests 9.2 grams of sodium lost with the 2.7 liter fluid loss. So, how do we replace 9.2 grams of sodium loss? From a Gatorade website: http://www.gssiweb.com/pdf/gatorade_bev_chart.pdf 8 oz Gatorade contain 110mg of sodium 8 oz Pedialyte contain 248 mg of sodium To replace 9.2 grams or 9,200 mg of sodium with Gatorade? 9,200/ 110= 83.6 bottles of 8 oz Gatorade, or 699 oz, Enjoy. For those unfamiliar with Pedialyte, it is a fluid given to infants, I believe available without prescription. I personally don’t like the taste but infants generally love the stuff. 9,200 mg/ 248 mg = 37 bottles of Pedialyte. This could get quite expensive. Even if the numbers are incorrect by a factor of 2 or 3, these numbers still suggest a large volume of sports drinks will be necessary to replenish the lost sodium. Everyone needs to crunch those numbers and assumptions for me, I frequently make mistakes! Now for real world experiences. I became interested in fluid replacement about 15 years ago when I consistently experienced severe muscle cramping during summer enduros. I share the same riding environment as John CRF450, deep south, hot and high humidity. The muscle cramps I experienced were typically soon after resuming the race after the gas stop where I had consumed a large quantity of fluid, mainly plain water. Severe muscle cramps also occurred on the drive home, again after consuming a large volume of plain water. I tried Gatorade and other available sport drinks but found these fluids made me nauseous, I also did not like the clean up of the Camelback after filling it with dilute Gatorade. I knew something had to change during a drive home from a summer enduro with my wife and children. At a gas stop I fell out of the truck and hit the concrete with both legs fully cramped. I was lucky I was not arrested for being drunk! That summer I spent many hours in the medical library at the hospital where I worked and also in a medical school library reading every journal article and text on the subject I could find. I also discussed the problem with several colleagues. A common theme about sodium replacement seemed to occur. The obvious need for fluid replacement is found everywhere. The concept of dilution of intravascular and extracellular sodium was new to me and not universally discussed or recommended. However it seemed to fit with my symptoms and seemed worth a try. I ran the idea through my personal physician and also my wife/ Internal Medicine doc and both thought it was worthwhile and safe. Without any change in my conditioning routine, the simple addition of a small quantity of salt in the fluids I consumed before and during a race completely alleviated the muscle cramping I experienced. I can honestly say I have not experienced a muscle cramp since I began this routine. I am 52 years young and enjoy the sport more than ever. Not infrequently I have watched riders less than half my age stop a race due to muscle cramps while I was without cramps. Multiple riders who share my salt replacement routine also have been free of muscle cramps that had plagued them. As an aside, I will suggest that many physicians do not understand the physical requirements of off road motorcycling. Many with whom I have talked don’t understand the difference between a ride on a Harley and 4-6 hours of wrestling a hot dirt bike though woods at race speed, wearing a helmet and other protective gear in 90+ degree weather. While the effort may not be equal, I believe off road racers probably lose as much or more fluid as marathon runners. The above should not be considered advice or a recommendation. There is a lot of good and bad advise on the Internet. It is up to the individual to sort through the information. As previously stated this is my personal research and experience and may not relate to others. Do your own research, and by all means if you feel the my routine is dangerous, don’t go near a saltshaker!
  10. John

    Pre Ride Enduro Prep for the body

    While nothing takes the place of proper conditioning, I’ll suggest a simple remedy, which may help. You have probably tasted your own sweat and should have noticed it is quite salty. I have weighed pre & post ride in hot humid conditions and noticed weight losses of over 5 pounds. Imagine how much salt or sodium was lost under those conditions. What happens when that volume of fluid is replaced with straight water? The remaining extracellular sodium (which is already depleted) is further diluted by the extra volume of water. By consuming the large volume of water, you have actually made the situation worse, not better. The simple solution? The sodium loss must be replaced. I have found the easiest method is to increase salt intake the day before the race, the morning of the race, and most importantly during the race. I salt the meal prior to the race; I normally don’t use table salt. The morning of the race I place a small quantity of salt in the water I consume. Most importantly, I also add salt to my Camelback at the start and also when refilling it during the race. It is easy to consume extra salt slowly; too much salt rapidly ingested will pull fluid into the intestines and cause a watery diarrhea. I have not seen a sports drink, which I believe will replace the sodium we lose. I often hear people trying to replace potassium and magnesium. I doubt a normal individual with a reasonable diet needs a supplement but it should not be harmful. We have been taught over the years that increased sodium-salt intake is harmful and may cause hypertension. While this is true in certain instances, a slight increase in salt should not harm a healthy individual. This may not be advisable for someone with severe hypertension or renal disease. Individual situations will vary; consult your physician if you have a question.
  11. John

    Locating Screw on Engine Case

    The screw in question may be the top dead center locating or locking screw on the front right engine case. It should have a thick copper washer (which prevents the end of the screw touching the crank or entering the cutout on the crank which marks top dead position of the piston for valve adjustments). I am on my third RFS. I tighten the screw without loctite and have not lost one yet. You MUST have the copper washer in place before starting engine. You can take out the screw and notice the tapered tip which fits into the slot on the crank.
  12. John

    Squirt timing on the 03 carb

    Try: http://motoman393.forreal.net/tech/carbpics.html http://www.thumpertalk.com/bike/ubbthreads/showflat.php?Cat=&Board=UBB11&Number=345934&page=0&view=collapsed&sb=5&o=7&fpart=1
  13. John

    My rear is killing me.....

    I'll also vote for the Moose riding shorts. I use A%D ointment instead of the Butt Paste. A&D is cheaper and the check out girl won't think you are a pervert. It also comes in a large tub, (place a "no double dipping" warning on the tub if multiple riders use the tub). The tooth paste style is great to use on friends if they try to bum toothpaste. (Dwight, I almost did this to Carsten one night at a motel, but didn't have the heart.) The EE tall, soft foam is taller and softer than the complete seat sold by multiple vendors, made by SDG or SGD. The stock cover is probably not large enough to cover the taller foam, I also used a cover from EE, which looks and works great.
  14. John


    An electric wire nut will work, pick your favorite color.
  15. My 450 EXC now has 110 miles on the odometer. I raced a 520 EXC for two seasons, '01 & '02 models. I decided on switching to a 450 to do something a little different. Not too much different as it turns out. The power in the mid and higher rpms is about the same, both end up spinning the rear tire as the revs get high. The 450 power is softer at the bottom of the rpm range and doesn't quite pull as hard as the 520. 2nd gear on the 520 will pull nicely from almost being stopped, the 450 needs more clutch. 1st gear is more controlable on the 450 in the tight woods. I found it hard to be aggressive in tight woods on the 520 when in 1st gear and usually short shifted to 2nd. The 450 seems to steer better than my '01 or '02, I don't know if the offset was changed or the new tank/seat allows me to sit more forward. I am around 205# without gear. I am using a PDS 8, and have not changed the forks yet. The forks seem a little soft and I will probably increase the fork oil height. Tall Soft seat foam with an EE cover has been a wonderful change from the stock foam. I am waiting for a new needle before deciding if I need to change the gearing for better low end pull. The 450 needs the choke on for a while when cold and takes longer to warm up before it will idle and run smooth. The 520 would usually start and smoothly idle without the choke unless it was very cold. I put on fork covers, Wild Shinz velcro type, before riding the bike. These work great, I never replaced the seal on the 520s and each one probably has over 3000 miles. The increase in engine size has narrowed the power gap between the 400 and the 520, there are 525s around but 450 are hard to find around here. I don't think the 520 tired me out more than the 450, time and the start of racing season will tell. If I lived out west or mainly rode open terrain, I would go with the 525. The big bore also maintains more power when riding at high altitude. John 300 EXC