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About markbxr400

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  • Bike
    2017 Montesa 300RR

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  • Location
    Lower Alabama, USA

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  1. Maybe I'll see you over there for an event one weekend. May hit the Herritige Hills event on the 24th. http://swvta.com
  2. Easy to forget. Dang, you're hitting close to home. My mother's from Muleshoe and have lots of family in Sudan. I'm from Amarillo. Small world.
  3. markbxr400


    Can't believe you'd dare ride out in an open, desolate place like that with COVID and all. There must not be a living soul within 10 miles of that place. Jeez . . .
  4. My son and daughter-in-law just rode a trials event last weekend with the South Texas Trials Association. The event was at Rio Bravo in northeast Houston. Here's a link: https://stta.tryalsshop.com
  5. Partially torn ACL, repeatedly re-torn. I wear Asterisk Cell Ultra 2.0's for offroading and trials. While they won't absolutely prevent a hyperextension, especially if you come off the back going up an obstacle, they will reduce the extent. Been wearing Asterisks since the original tear in early 2007. I've been able to keep riding as a result, with no surgery.
  6. DSquared Trials, TrialEnduroDirect and TrialsSuperstore.com all show to sell them
  7. Thanks Jonny. Yeah, had tried them. They didn't stock and would have to try and order like everyone else. On the Mitani, $$ OUCH !! May have to either try and find someone that did a swap for aftermarket and see if they'd sell me their OEM, or pull the rivets and take a hammer to mine to try to straighten it out. Not quite sure how the exhaust was able to bend like this on a 0 mph loop out. End was full of dirt. Trying to re-enact, I can't get the exhaust tip to get into the dirt. Thanks again.
  8. Tweaked my exhaust in a loop out. Have been trying to locate an OEM one but seems that the US has been/is on an extended backorder. Anyone happen to know where I might find one? Thanks in advance. Mark
  9. I run this in both my Montesa's. Only because I have to. Darned expensive ($50/qt) and takes a coupe of weeks to get it here in the US. Much cheaper options are available for the Beta, eg,, Lineaway's suggestion. Also, should be no problem going 30 hours between changes.
  10. Anyone have any vendors and part numbers for SS bearing for the 4RT and 300RR?
  11. I've had had the Beta EVO 300 4T and now have both a Montesa COTA 4RT260 and a Montesa COTA 300RR. All are great bikes. Plenty of power, and weight has not been an issue for me (but I'm relatively new to trials and limited to about 3' obstacles). The Beta definitely feels lighter than both of the Montesa's to me. I love the smooth power delivery and the easy starting of the 4 strokes. Oil changes on the Beta are a snap - drain the oil, pull/clean screens, pull/replace filter (has it's own cover), refill oil. Montesa is a little more work, but not really much. Removing the skid plate and left side cover add a little work, but it's not difficult.
  12. I dunno. I just drove 2300 miles round trip from the Alabama gulf coast to ride a 10 section x 4 loop event in Michigan. Up on Saturday, event Sunday, back on Monday. Did get to ride it and visit with my son and daughter-in-law who live up there and visit with some friends, so I thought it was worth the drive.
  13. I've only had 4T's (Beta EVO 300 4T, Montesa 4RT260 and Montesa 300RR). As others have said, heavier than the 2T's, but very smooth and controllable on power delivery. If I were good enough to launch up 6' rocks, I'd be on a 2-stroke. But for the 3' obstacles I can handle, the 4T's have been awesome.
  14. markbxr400

    4rt oil change

    Biggest differences between my trials bike and road bike are: 1. My road bike holds a gallon of oil and my trials bike holds half of a quart 2. My road bike has an oil filter nearly the size of a car oil filter and my trials bike has one the size of large thimble. My diesel 3/4 ton pickup has two behemoth oil filters and holds 3 gallons of oil, but I go 10,000 miles between changes.
  15. markbxr400

    4rt oil change

    I also installed hour meters on every bike, lawnmower, tractor, generator, etc that I own. I like to know where I'm at on all of this. Regarding the filters, New 2017 4RT 260 purchased in January - 3.7 hours: When I drained the engine oil from the 260, it was pretty clear amber. I let it run over my fingers and noticed very little dark streaks but some fine metal flecks. When I pulled the oil filter, I also noticed metal flecks and noticed darker coloration. The bottom screen also had some metal flecks. When I drained the tranny oil, it was also mostly a clear amber color, but I noticed some black streaking (very fine particles). New 2017 300RR purchased in May - 1.22 hours: Surprisingly, the engine oil was much darker than I found on the 260. I think the dealer ran the bike more than he claimed. It wasn't black, but definitely dirtier than the 260. About the same amount of metal flecks as the 260 when I let it run over my fingers. I wasn't able to pull the oil filter or screen due to stripping the head on one of the rear slid plate bolts, and my not wanting to try to get the side cover off with the skid plate in tact. The tranny oil looked about the same as the 260 - clear amber with some black streaking. I will definitely be changing the oil and filter again when I get back from Michigan and my replacement skid plate bolts arrive, as I want to get a baseline on that filter. My plan going forward, now after initial break-in: Change the engine oil every 15 hours Change the oil filters every 30 hours (but still will do the 300RR in the next couple of weeks) Change the tranny oil every 30 hours Clean the air filters as needed, probably every couple of trials, depending on dust. To me, oil changes, air filter cleaning and valve adjustments are the most critical maintenance things to get long life out of these motors. While I don't send samples off for analysis as some do, my taking the time to look at them periodically gives me a good indication of whether I should expect any looming problems. Here's a pic of the 260 oil filter that was pulled at 3.6 hours:
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