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ochster

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About ochster

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  1. OEM big-wheel version uses a 19x1.60 front rim. Bike is ridden by an expert adult rider. Suspension has been beefed up and are looking for a tire to "fill up" the rim and have some sidewall beef. Not really seeing anything other than the typical 70/100 tires which seemed designed around the 19x1.40 rim...the defacto industry 19" front standard. Anyone have some experience which brands may have a beefy build?
  2. ochster

    Battery tray for KX subframe use.

    A few more of the install.
  3. ochster

    Battery tray for KX subframe use.

    The trays fit the KLX subframe which uses nutserts for the trays oem lid to locate and fasten to. The tray is hand formed and corner tigged from .036 stainless steel. Designed to hold the oem type battery in it's original position when retrofitting a 06-08 KX450F airbox. After filing off the two molded centering tabs from the underside the KLX battery cover fits over the subframes nutserts as original. Using a patch of industrial velcro the ECU relocates inside the right side panel. The rubber pad from a top the KLX airbox is used for a buffer in the tray. This airbox mod provides greater performance with a secure full size filter.
  4. ochster

    Battery tray for KX subframe use.

    I made a batch of stainless steel battery tray's for use with the 06-08 KX450F airbox/aircleaner (not KX-F subframe). These were designed for use with the oem type lead acid battery. There are 5 left. If interested, contact me via a pm with your shipping info. Maybe give a shout out on this thread for others to see when the 5 parts are gone. One tray per member.
  5. ochster

    Crf 230 frame rust

    Powder coating may have a higher abrasion resistance than paint but that is it. I will take a quality automotive finish, especially an expoxy based primer with a urethane topcoat any day for a motorcycle frame. As mentioned, these Brazilian made CRF frames are low end parts. Would you really expect anything more on a bike with this suspension, hubs, etc.
  6. ochster

    Crf230 linkage mod

    My observation is looking at the chassis as a whole. Your current setup has the fork rake pulled in even more than stock and is transferring more of the chassis weight toward the front. But if your happy with the mods that is all that matters. Happy riding as they say!
  7. ochster

    Crf230 linkage mod

    Same person. He not only knows his away around a motorcycle, he can seriously ride! You are right to be concerned about the front wheel to fender interface as the 21" wheel will hit. Using preload bushings and creating a coil-bind event is not good though. The total length of the fork is 10mm shorter even though as you stated the travel is greater. That is actually a bad thing and tough to overcome with out fork extensions, a longer fork, reduced rear travel, or a gullwing upper triple clamp with a 12-14mm offset. Not easy or cheap, I know.
  8. ochster

    Crf230 linkage mod

    Good...so it sounds like you copied the 150F linkage parts while maintaining the 230F seat height. The 150R fork is 10mm shorter than the 230F fork and has 4mm less axle offset. You mention adding 25mm of preload to the 150R fork spring. I wonder about possible coil bind, there a fairly short spring. Depending on how you addressed the 150R fork length and knowing it is sprung on the light side, I would increase the rear sag 10-12mm extra for starters. The new actual triple clamp offset (if oem 28mm offset clamps) with subtracting 4mm of axle offset = 32mm and an increase in trail. My opinion is the next step should be stiffer fork springs and/or fork extensions if available. I know your local resources are tight as I have done business with some of the Italian teams. Your ingenuity and skills are to be commended. Do you know Oresti Valenti of Cantania?
  9. ochster

    Crf230 linkage mod

    Crossplayer...Your bike has accessories/mods not common to the US oem version for a reference weight. For example, front fork assy, rear wheel with disc conversion, passenger pegs, etc. Be interesting to know the bikes base weight. Concerning the shock...did the donor XR350 shock eye-to-eye measure the same 384mm as the 230F? how about shaft stroke? What upside down fork is on your bike? Maybe I missed it in the thread. The US oem 230F fork is 850mm from axle centerline to upper fork tube/cap interface. Photos can be deceiving. Knowing the numbers gives me a feel for how the chassis sits.
  10. ochster

    Crf230 linkage mod

    crossplayer....Have you keep track of the chassis measurements and final weight, even if only on paper? Front steering rake and linkage ratio numbers would shed some light on your modification expectations and help with a direction for the fork and final suspension settings.
  11. ochster

    Crf230 linkage mod

    My 150F notes show as noted: AB = 47mm BC = 59.5mm AC = 44.7 150F straight link = 97.5mm
  12. I ordered up several new transmission shafts and gear sets. It will be interesting to see the fit of new parts. From what I have seen part clearances may be part of the culprit.
  13. Correct...and until the up front cost and dealer commitments can pencil out a profit for all involved, it is not going to happen. Build it yourself. Dirt bikers have been doing it on their own forever. If the oem's want our money make them earn it. I am not holding my breath.
  14. ochster

    XR4 Front suspension/springs

    Poster is stating he is 200lbs, uses an oversize fuel tank and is racing on MX tracks doing the jumps. No way will .47's be to stiff. He needs more fork.
  15. ochster

    XR4 Front suspension/springs

    You start comparing in conditions with mud, ruts, sand, or even rocks and the performance difference with a front end flexing less is dramatic.
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