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MTrowbridge

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About MTrowbridge

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    California
  1. MTrowbridge

    KTM EXC 300 or EXC 530???

    My riding buddy had virtually the same situation as you. Similar size & weight, with about 30 years riding experience. He had been riding a KTM 300, but didn't have fun on it unless he was being aggressive with the throttle. He rode my 450 four stroke (WR) and really liked how much easier it was for all around riding with his family and mine. He does much better on challenging trails too. He ended up buying a CRF450X and really loves it. I would recommend you get a 450 rather than a KTM 530. Unless you only ride deserts and open trails, the 450 will be a bit lighter with plenty of power. Much less tiring than the two stroke. Either KTM's 450 EXC or XC-W would be a great choice.
  2. MTrowbridge

    Short inseam but want bigger bike.

    My wife is 5' 4". We turned her TTR-125 into the perfect bike for her with a few additions from BBR: * 150cc engine kit. * FMF PowerCore pipe (increases both low and high end response...much smoother) * BBR swing arm (ads 1-1/2" to wheelbase and height) * BBR heavy rear spring * BBR triple clamp (ads 3" to bar height) * BBR stiffer springs for front forks * BBR frame cradle (skid plate) which provides protection and strengthens the frame She loves her bike. It's great on trails, and much more proficient than the stock TTR-125. But not nearly as heavy, tall, or aggressive as a taller bike, etc.
  3. MTrowbridge

    What to do on steep rocky downhills?

    Some good advice from others above. But a few other tricks that have helped me are (i) use my rear and front brakes aggressively, but in the smoother spots between slippery sections; (ii) I tend to use engine braking to a moderate degree, to allow me to ease up on the brakes going over larger rocks or slippery sections without surging forward (letting off of the brakes allows the suspension to free up to absorb big hits without breaking loose); and (iii) rocks tend to roll to the center of trails...so I use the edges if they provide better traction.
  4. We just put an IMS tank on my son's KTM 85SX to give him longer range for family enduros we ride together. The tank comes down close to the pipe on the right side, and about 4" lower on the left. The problem is that we can't get to the spark plug without removing either the exhaust pipe or the tank itself (a problem on a two stroke, because eventually a plug will foul). Has anyone else with this same setup figured out a way to change the plug?
  5. MTrowbridge

    no WR's for 2010

    I'm planning to get a new 450 in 2011 to replace my '05 WR450. What I'd like would be: * EFI (there is no excuse for this not to be on the next WR model change) * Lighter than current WR450 * Higher ground clearance than current WR450 (KTM450 has 1 1/2" more ground clearance under skid plate than current WR) * Firmer springs/suspension; '09 bike is too soft for most riders as is * Lower COG (perhaps using new YZ tricks; i.e. frame, engine design, pipe from rear of engine, etc) * Dual sport legal * Enduro computer stock with more functions than current * Better headlight If I don't see some of these improvements I may lean in the direction of Orange the next time around. What do you all think?
  6. MTrowbridge

    KTM 85SX Mods for Off Road

    Just bought a nice 2007 KTM 85SX for my 10 year old son. He is competing in a youth enduro series, and we do a lot of off road riding, and he's outgrown his TTR90. Would have liked a new 85 XC, but too expensive. Have put a FMF Turbine Core 2 silencer on the SX, which gave the bike more low end and mid range with less noise (needed the arrestor for off road too). Handguards and skid plate are on order. What other mods should I make, for the bike to be better in all around trail riding and enduros? My ideas: 1. Heavier flywheel formore torque, less stalls. 2. IMS tank. 3. Does anyone know if a kickstand is available aftermarket for an 85SX? (the XC has one, but the frame is different than the SX). Trail tech doesn't make one, and I don't want one which clamps onto the swingarm and then swings around... 4. Other?
  7. MTrowbridge

    150 kit wrong place for money?

    We put the BBR150 kit onto my wife's TTR125, and it's awesome. Just as rideable for her, and gives much better torque and control throughout the whole powerband. Just a pipe doesn't come close to the difference the BBR kit makes...and we put on both the BBR kit and also a FMF pipe. Definitely worth the money. And the power hits both on the bottom and top. Am going to do the same thing with my daughter's small wheel TTR-125...and for one I'm buying for our son who's riding youth enduros now on his TTR90. Very little additional weight, and a lot better bike as a result. Sort of a WR150, if you ask my opinion.
  8. MTrowbridge

    2010 WR - What I'd like to see.

    I have a 2005 WR450 which I've made investments to get it to be a really good bike. I'll buy a new 2010 or 2011 WR450, especially if they do some or all of the following: 1. EFI (I ride at different elevations from sea level to 6K feet in the Sierras). 2. Lighten up the bike more. Maybe move battery in a waterproof spot in the skidplate...like some WR racers are doing...to lower the CG. 3. Raise the clearance (WR has less ground clearance than the KTM and most of its other competitors...makes a difference going over logs, boulders, or drop offs) 4. Stock bike should come with a firmer suspension. Too soft stock (I replaced front and rear springs on my 05 to get it right). 5. Would also be nice if we didn't have to do all the free mods and replace the throttle stop...just to get it to run right stock. Not a big deal, but why...?
  9. MTrowbridge

    2006 WR 450 suspension for a fat guy

    I'm 200 lbs, and recently had stiffer springs put in front and back of my 2005 WR450. Made a huge difference in handling and my ability to get through/over tough obstacles. The stock suspension can't be adjusted enough for someone your/my weights...get the right springs.
  10. MTrowbridge

    Any old/slow guys riding the WR450F?

    I'm 48 and not the fastest rider in the world. I had taken a 20 year hiatus from dirt bikes, and started riding again with my wife and kids. The WR450 is a very good all-around trail bike. My son and I do family enduros and ride both in the Sierras and Nevada desert with friends. I disagree with the person who said to leave the bike stock. Changing out the throttle stop and doing the other free mods makes it a better bike, and doesn't force you to go faster than you want. You'll just have more all-around control for tough spots (including the ability to go up steep sections in too high of a gear). A couple of other modifications you may want to make: 1. Install a Boyeson Quick Shot Accelerator Pump. Pretty cheap, and it gives you a lot of low RPM throttle control. 2. Install a Boyeson Water Impeller Pump. The WR will sometimes boil over when ridden slow on hot days (a problem for those of us who don't generate much breeze over the radiators...). This simple part gives you 75% more coolant flow. 3. An aftermarket pipe makes a big difference, if the price is worth it for you. A good pipe (I like the FMF Q) keeps the bike quiet but gives better throttle response at both low and high RPM. Also increases throttle response, which is handy for us slow guys in tricky sections. 4. I weigh about 200, so I changed the front and rear springs. Made a big difference. No matter what, enjoy yourself. The WR will be an amazing improvement over your old XR...
  11. MTrowbridge

    Riding in deep loose gravel

    For just about any surface that moves, you can't get to worked up trying to control the bike's side-to-side movement. You've got to aim for the spots which will keep you going in the desired direction, and have faith that the physics of the front and rear tires will keep you on track. Trying to "react" to wobbles or swings will be futile...and will probably end up requiring the good advice before about bandages and Neosporine! One other tip...appropriate speed smooths out inconsistencies in the surface. Each will be different, but loose gravel and sand work a lot better if you've got enough speed to roll over the surface rather than pushing through it. Now I'm going out to ride in some mud with my son...
  12. MTrowbridge

    Back on a WR........

    You have a great bike. Only tip I'll give for the weight, is not fill your IMS tank beyond halfway for rides in tight circumstances (i.e. woods, etc). The bike will actually have a lower Center of Gravity than a stock WR because the gas will be lower in average height. Only use the IMS tank's full capacity for long rides when you will actuall need all the gas....
  13. MTrowbridge

    300 xc-w or wr450?

    My riding buddy has a KTM 300 two stroke which is the second one he's had in the last 10 years. Like you, he rides mostly trails. After riding my WR 450 four stroke, he got to thinking. He said the two stroke was more difficult to ride on tight trails if he wasn't pushing it hard. And so he just bought a four stroke of his own. Five months later, the KTM sits in his garage unused. He only rides his 450, and loves it. Hope you enjoy whatever you buy...
  14. My son is almost 9, and tall for his age. He started on a PW50 and switched last year to a TTR90. We do some fairly serious trail riding, and it's just the right bike for him now. We added a FMF pipe which bumped up the power by about 10%...made a big difference for him at his weight. He should be able to stay on the 90 for another year if I invest in a tall seat. Next bike will probably be a TTR125 small wheel. I'll add an FMF pipe, a BBR 150 cc kit, new bars, frame cradle, new springs, and extended swingarm as my son grows...maybe switch to larger aluminum wheels too if the front disc brake doesn't cost too much. It should last 2 to 3 more years before he's ready to move up again. But in the meantime he'll have a great bike for trails and enduros. At that point I'd like to see what's available in 4 stroke enduros. Maybe Yamaha will have a WR150 out...or perhaps my son will be ready for a WR250.
  15. I disagree with many of the posts on this thread. Seems like people want an old aircooled "play bike" motor in a good chasis/suspension. My WR450 has been bulletproof for me, and it's been ridden nearly every week for the last two years. Our family is blessed to be able to ride out our garage and onto nearly a thousand acres of ranch land...with creek crossings, hill climbs, rocks, etc. I ride there by myself and with friends...on cattle trails (watch the low branches) at fast speeds. I also ride in the Sierras and Northern Nevada with fast friends. But I can easily ride slower with my kids who ride TTR90's and friends on quads...for hours. The WR has done it all...without any mechanical problems. I'm completely happy with the WR, and will probably upgrade to a new one when they go fuel injected in a year or two. My only problem now is that I'd like my kids to have something faster than a TTR125 when they're ready to move up. I'd love them to be able to have an e-start four stroke motor in a good suspension...like a Yamaha "WR" version of Honda's CR-150R.
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