Street usage gives busted engine?
Posted October 07, 2003 - 06:40 PM
Rather new to the dirtbike and dual sport world, and have searched the forum over and over again..
Learned alot, thank you all..
Probably missed it, but anyhow, here´s what I´m wondering:
I have a street legal WR426 -01, which I mainly use for heavy Enduro, love the trails and really like it in the woods, but since I read a post regarding Crankshaft Bearing jammed
I feel a little worried..
Is this something that happend to this one rider alone?
I use the bike for transportation to and from the trail or wherever I rode it, so it can be up to 35 km of pure road riding..
Am i to be afraid that it wont hold? I mean, It´s a foursmoke, should it really be that sensetive that it will not tolerate streetriding without breaking? Sounds a bit strange to me..
Sure, there is little oil compared to a streetbike, but its changed frequently (every 5-10 h. riding) and tireware is ABNORMOUS when riding road, but the rest of the engine or bike for that matter shouldn´t brake due to streetriding..? Or am I wrong? Should I buy a car to transport it to and from practise? (will probably do so anyhow, due to cold winterdriving on the road is not appealing to me..)
Thanks for your inputs..
Posted October 07, 2003 - 07:40 PM
Posted October 07, 2003 - 07:45 PM
Posted October 07, 2003 - 07:56 PM
So I shouldn´t be worried then.. Clutch is ALWAYS used in roaddriving, and mostly in the woods aswell, since I´ve ridden a streetbike for the last 5 years it just seems as the right thing to do..
Also, I´m aware of the "whatever you called it" in the transmission (drivechane and sprockets) Keeping an eye on them constantly..
The bike´s up to about 120 hours of riding in total, and I hope to get much out of it yet! Lots of people I´ve been talking to though, say that they aren´t built for street use at all, and I will have problems in the future.. But in my opinion, that WAS true in regards of the 2-smokers.. In a thumper none of these problems should occure.. Although I´ve been thinking ´bout making the oil container larger by buying an oilcooler, and mount it.. Should give approx 2-3 dl. more oil in rotation and better cooled oil when going on the road.. Not to mention that there should not be a problem in extending the oilchanges to up to 15-20 hrs riding then.. Could there be a problem for the oilpump to manage this?
Posted October 07, 2003 - 08:12 PM
Posted October 07, 2003 - 09:00 PM
I doubt increasing the oil volume will make much difference. After a good long ride I can pull out my dipstick and wipe the oil off it with my hands and its always only warm,never hot! Try that on an xr or dr and you will burn your fingers.
Just go easy on your gear changes on the road and I doubt you will have any problems. I have almost 10 000 kilometres of combined dirt and bush use and my valves havent even needed re-shimming yet. Keep your oil changes regular and your airfilter clean and enjoy
Posted October 08, 2003 - 10:15 AM
Posted October 08, 2003 - 07:41 PM
Posted October 10, 2003 - 01:30 AM
In some cases it seems as it brakes in other not..
Posted October 10, 2003 - 04:45 AM
Posted October 10, 2003 - 06:21 AM
The connection rod bearing got jammed on my motarded wr426f 2001 out riding on the highway,...
Don't know exactly what caused it..
Well then, any connection/relationship between how you ride, your maintenance intervals, and your engine failure is completely speculative.
First order of business is determining exactly why the failure occurred, I know I would be just a litlle curious to find out what happened to CAUSE the failure before I started throwing new parts in the engine.
Posted October 13, 2003 - 06:24 PM
Posted October 13, 2003 - 08:35 PM
Posted October 14, 2003 - 06:17 PM
Posted October 15, 2003 - 12:26 AM
Posted October 15, 2003 - 08:40 AM
Higher 15/50 gearing lowers RPMs and creates a better 'under load' engine operating condition
Yes. My gearing is 16/44 for the road. The engine purrs at 60 miles per hour
Posted October 15, 2003 - 02:10 PM
Posted October 15, 2003 - 05:34 PM
I have two wheel sets so the street rear wheel is mounted with that 44 t and the offroad rear wheel wears a 48. This way I automatically get a lower gearing when going offroad. 16/48 is still too fast for woods riding though. When I go for long rides on open trails, I keep the 16t on the front and just put the offroad wheel giving 16/48. But if the day is planned to be tough and technical, I take an additional minute to install the front 14t giving a 14/48 ratio which is just nice for woods riding. I rarely do it since my partners here like to ride open trails.
Posted October 15, 2003 - 10:07 PM