Saving your Axles ! literally
If you drive your KB in loose impediments aka loose soil, loose sand (bad idea), loose gravel it is a good idea to remove the tunnel protecting your Main Drive shaft for a cleaning. Once clean re-assemble protection! I had the unfortunate experience of getting a smell pebble down there and every time throttle was given the shaft spun and either scraps, picks up or can even wedge its self so that damage is great. Removal is simple, WD-40 the shaft so that theres some slippery protection and you will be good to go :) hope this helps ppl.
IMo sand = sand paper to plastic parts !
More stones up in there...
Thought I'd share one more thing in the pursuit of saving center drives. QYK, you'd be happy to know the latest round of stones up in the center bay were collected on-road, so this could well happen to you. :)
The one last gaping point of access for rocks and things lurks under the motor. One would think there's little room here to do much, but turns out there's plenty of air:
Obviously my center drive has seen quite a bit of action (the black sticker around the motor is torn up on the underside as well):
Blanking panel prototypes:
And final version, cut from a thin flat part of a clear plastic container (strawberries or something), scored and shaped for a tight fit, and held down with double-side automotive trim tape. If you run a big spur gear, you'll probably need to be careful about thickness and shaping in that area:
Going to do some off-road running for the first time in a while tomorrow, will report back how all these mods are working.
Few more tricks to add for off-road-worthy-ness
Since this thread sort of aggregates some of my off-roading cleverness, figured I'd add a couple more things to the list:
When running in decomposed granite, I noticed my steering block would get locked up:
This is likely due to the wheels throwing rocks directly at the steering works when they're steered. So, perhaps a shield of some kind will deflect some of the most direct shots.
Fabricated these from some flat plastic - think it was a tray from a fancy package of sliced cheese - and attached with some double-sided carpet tape:
Also, I had sticks and such get stuck in the spokes of the wheels, not to mention my outer wheel bearings getting all nasty with dirt, and soaked when running in the rain. Took some inspiration from the aerodynamic backing panels on F1 and prototype sports cars and made some hub-shields to snap onto RPM hubs. Also from nearly indestructible "cheese tray" plastic:
Rather difficult to make as they have to be cut very precisely. But the outer wheel bearings don't get wet (from splashing) even in the most aggro wet-road driving. They stay pretty clean in the dirt, and of course no sticks are jamming into the wheel spokes. Fwiw, also noticed these sharpened steering response with my aero rig installed, so they have an effect there as well.