Recent content by Mammoth

  1. Mammoth

    Electric Off Road Kart

    Ended up building new bottom links for the rear suspension out of Cromoly. Started by making some plugs. Cut some tubing to length. Helping tip for marking a cut line on tubing is to use a pipe cutter. Had to transfer the shock brackets. No more rubber bushings for this kart...
  2. Mammoth

    Electric Off Road Kart

    The only reason I can think of to remove the battery would be to clean it. Just have to unplug the main battery plug and loosen the straps for it to come right out. The display would remain wired in by a few quick connectors.
  3. Mammoth

    Electric Off Road Kart

    Thanks everyone for the advise. This is my first time wiring an electric vehicle, and there's lots to figure out. It was recommended by E-conic Cycle that I get the Chaojie display. Then I ordered a few plug and play harnesses from Electric Moto Family in an effort to make it easier to wire...
  4. Mammoth

    Electric Off Road Kart

    Yeah I watched Daniels videos. Lots of good content there. Went all through the groups picking up info. That's where they talked about cracking the weld on the wheels, but they are putting some big horsepower to them. I did swap the rear axle to a BMI axle because it's a little wider which...
  5. Mammoth

    Electric Off Road Kart

    I ordered a hydraulic disc break conversion kit as an upgrade to the mechanical brake that came with it. The conversion kit had a single piston caliper which is a design I don't really care for, so I swapped it with a dual piston caliper. I had to make this bracket just to hold it. The red...
  6. Mammoth

    Electric Off Road Kart

    Surprisingly I didn't come across Pinkpanda3310. I searched all over looking for any info or videos. The shocks are normally $400 but I found them on sale for $129. I like these because I can adjust the air pressure to match the weight of the kart. Made some shock guards to block any rocks...
  7. Mammoth

    Electric Off Road Kart

    The shocks that came with it were not shocks at all, they were just springs. I ordered mountain bike Fox Float X Air Shox which are shorter, but have more travel. All the mounts had to be altered so they could fit. The rear upper mount 12mm bolt hole had to be welded so I could drill a smaller...
  8. Mammoth

    Electric Off Road Kart

    I just picked up a Ford Transit van so I can travel with multiple vehicles. I like the idea of having an electric full suspension kart so I can explore dirt roads in the forests and not disturb the wildlife. Since the kart is going to fit into a van it has to be on the smaller size. I saw a...
  9. Mammoth

    GX390 Boat Build

    I really struggle welding aluminum. If its right in front of me I can usually do ok. Most of the time it's not. I always seem to be reaching at some awkward angle, going in some undesirable direction. Its a real challenge.
  10. Mammoth

    GX390 Boat Build

    Added a mount on the steering wheel clamp block for a push pull cable. Built a bearing block for the rudder shaft with a plastic bearing so it will pivot smoothly, and I won't have to worry about a future rusty bearing. I made sleeves out of titanium for the bolt pivot holes.
  11. Mammoth

    GX390 Boat Build

    Ultra high molecular weight polyethylene. It's a dense material that can handle impacts without taking damage, and has a very low coefficient of drag. Aluminum on rocks creates a lot of drag. With UHMW I can drive right over a gravel bar like its sliding on ice.
  12. Mammoth

    GX390 Boat Build

    Installed 3/8" thick UHMW to the bottom. This will add some weight and cause drag, but the bottom will be able to handle harder impacts and it will slide way better over rocks.
  13. Mammoth

    Quick Bits

    These are weld on washers used to hold UHMW on the bottom of my boat. Probably work for .45.
  14. Mammoth

    GX390 Boat Build

    The tunnel has to curve back down to the water line for it to work properly. I don't pretend to know how it works, and opinions seem to vary wildly on the internet. I took my best shot at building it. Next is to make a rudder.
  15. Mammoth

    GX390 Boat Build

    I really hope it works. It's so experimental I have no idea how it will perform. It might not work at all. I'd be happy if it cruises at 20 mph.
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