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  1. Hyak

    Electrifying a cargo bike - Mid drive or Hub?

    Homebuilt cargo bike. Plenty of miles. Huge hills. Usually with a 40lb dog and some groceries. BBSHD gets me up hills under load faster than I need to go. Have never replaced the chain. Have never needed service on the motor. Chews thru brakes tho! Meanwhile, there are lots of rear hub motor RAD...
  2. Hyak

    Cargo bike motor recommendation

    This BBSHD longtail has been hauling my fat but up the 400' of vertical at 10% grade between town and my residence with 40lb pup and groceries for several years. Original drivetrain, battery and motor have never needed repair or replace. Recommended.
  3. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    The BBSHD has a 24 tooth clutch. 360degrees/24teeth=15degrees/click. I believe the Exposure hub that comes with the bike is also 24tooth. The slop stacks up randomly between the two, so best case is immediate engagement and worst case is 30 degrees which is just what I estimated that it did once...
  4. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Axle to axle is 51". Even if you spin the fork around it is unlikely to fit on a bus rack. Some of the 20" cargo bikes will.
  5. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    My list in order of preference is the DT Swiss Hybrid, Spank Hex and Hope Pro 4. SRAM 900 looks ok but can't confirm that the end caps are available. Last option is the Koozer which is cheap enough to buy 2 and swap out if there is a problem, but do I really want to do all that for $100? It all...
  6. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Same here. In the midst of a wheel build. Got the front done because that was the taco. Sun MTX33 rims with DT 2mm spokes and a DT Swiss 350 hub. Yes, the rear is a bit tricky. Planning on a DT Swiss 350 boost 148mm rear plus QR caps to take it down to 141mm QR. The Koozer BM440 might also work...
  7. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Maxxgabriel, I get the same thing. Sometimes late engagement. Sometimes a vibrating sound. They are difficult to reproduce and only happen when riding, so I've had trouble pinpointing, but here's what I think is happening. On the late engagement, I think it's a clutch in the BBSHD that engages...
  8. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Maybe just get the Jones bars? Another idea... When I first got this bike, I thought I would be riding slowly and that an upright position would be best. Even put some risers in the stem. Since then, it has become clear that the upright posture is costing me lots of battery. The included bars...
  9. Hyak

    BBSHD - Will it fit...?

    Shim to fit the gear housing which is the 47x64 measurement. The gear housing has a rounded edge, so may not need the whole 64mm. You can then decide if the chainring fits and the chain line is right. You could go for a smaller ring that is offset to bring the chain line back in. Then look at...
  10. Hyak

    Any advice on how to install the BBSHD with the shifting cable running along the bottom of the BB and the chainstay?

    Had the same dilemma. Either the cable gets bent more than I would like or the motor hangs too low and might catch a curb. Decided to drill a hole in the top side of the base of the down tube to route the cable over the top of the BB and on to the chain-stay. This would provide a good cable path...
  11. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Usually a few taps of the wrench with a rubber mallet work to remove a decade old BB. Much of the Envoy was assembled without any lube so it's no surprise me that this new BB is sticking. On initial assembly I noticed a dry headset dusted with aluminum shavings so decided to completely...
  12. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Have not noticed any frame flex. Even with a passenger or cargo on the back it is quite solid. Have never ridden a bike that felt this stable at speed before. The rims are narrower than I'd like which is visibly unnerving, but no issues there. The one thing it won't do well in terms of stability...
  13. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Not at all. Please do.
  14. Hyak

    Best and Worst Ebike companies customer service

    Very good, timely customer service from BafangUSAdirect and Grin. Extremely poor service and response from a certain moon themed company.
  15. Hyak

    2020 Giant Escape + Bafang BBS02

    Looks very nice! Would you tell more about your programming? I find that my ideal pedal cadence is substantially slower than the motor's most efficient RPM, but don't know how programming can help since they are both coupled by the same drive train. Does your programming change address this?
  16. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    How's it working out? Very well.. Do I wish I had front suspension? Definitely not. The 2.35" tires are plenty cushy for the road and path. I ride full rigid MTB or a drop bar cross bike on the local trails, so am adapted to it. The loaded longtail Envoy does return a solid thump jumping curbs...
  17. Hyak

    Dream commuter bike build

    When safe, I've been using the lower right position with success.
  18. Hyak

    Dream commuter bike build

    Agree completely with DrkAngel above. I just completed a test to find out what a practical commute speed would be on a route that is almost half of yours including the elevation. Short answer was going over about 25mph was an exercise in futility. Pedaling didn't contribute much compared to the...
  19. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Got the sewing machine out and mad panniers / cargo slings. Not sure this will work as well as I thought. Aluminum panniers of the sort used on touring motorcycles may be a better choice. Got to figure out how to bend some sheet metal now. While working on the lights with the battery off...
  20. Hyak

    Mongoose Envoy Cargo BBSHD Jumbo Shark

    Goal was to build a bike capable of completing this route starting and ending at the top of a 400 foot hill while carrying a cargo load of groceries without arriving sweaty and to be able to haul a 35 pound dog without using a trailer. It would be locked in front of a market or a park bike rack...
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