😀🚲Adding 10lb to my rear wheel AMA #BikeTooter #eBikes
the #GrinMAC itself is supposed to be 8.4lb, but with the heavier spokes+rim and tire+tube (still 1.75in but going from kenda kontact to conti tour and a slime heavy-duty tube) The old hub+spokes+rim+tire+tube was 3.3lb, new stuff 12.7 (no cassette on either weight.)
chainstays need to get 8mm more between them, 130 original. Can I put a threaded rod between them and run two nuts outward? ...
we've arrived at 138, but that was hard work so now we're tired (but we're also "it would fit now, we could keep going") 🥱
Interference between the rack afixment screw protrusion and the torque arm being a much larger flat surface than many bikes might assume to fit there. Otherwise looking fine.
The chainstay steps down right where the torque arm mount needs to be, and I have smaller hose clamps with the same band. Do you cut those off or tuck the tail into shrink wrap or something?
Nut as a temporary spacer, seems like a good fit, will want it to be as wide as possible, so things won't try to twist there.
Currently seeking a ~1/4in thick piece of aluminum roughly 5/8 in diameter with a hole in the middle or I can drill it. The best bet for a starting point seems to be a piece of 4ft bar stock for $25 and a bunch of sawing and filing 😞 or somewhere can send me one for $20-50...
Trying to work around the spacer but I keep getting distracted by it. Meanwhile how do you get heat shrink onto a hose clamp band? #eBikes
For #regenBraking control on grin #CycleAnalyst #eBikes, can you just plug a second throttle in to one of the e-brake connectors? #BikeTooter One throttle for go and one for stop?
Current status, two nylon washers as a spacer (as placement, not for motorized use) the rest fits but this is the hard way to face the screws of the hose clamps. Rode up the block, no battery, surprisingly little drag (or I'm just a beast)
Now I'm at "consider tape to protect the paint"... Does it?
The Double Bob and Triple Bob, Grin's Ebike Battery Mounts
I took the seat off to get a better reach to mount the battery and now I'm cleaning the history out of in there 😖
😀🚲 (@[email protected])
Attached: 1 video Help, my bike drank too much water 🤢 #BikeTooter
chain a little close to the battery but what if I put the front chainring on the same side of the crank as the stoker one (🧐) that's 3/8in farther out in the back 🤪
Soldering done 🤞
Making a bracket for the controller, cut cut drill drill ...
Making a bracket for the controller, cut cut drill drill ...
now to turn down these max current settings 😲 was set to 40A draw, 20A regen...
battery says 52V 14.5Ah max constant discharge current: 30A. charger: 58.8V 2A
LG4800mAh Cell 14S4P so 1C = 4 * 4.8A = 19.2A, but how about 0.3C = 5.76A?
Looking at the #cycleAnalyst and #baserunner settings and #GrinMAC with the bike on the workstand, trying to figure out the #regenBraking #eBikes thing #BikeTooter. From everything I've seen, it should be configured for brake lever + throttle to vary the amount of regen force, but I can't feel any difference while turning the cranks by hand, showing over 5mph on the CA. Should it be perceptible in the work stand, or what am I doing wrong?
Kevin Severud@enobacon I feel like Justin should provide you with a hotline to his work phone.
Grinch-stan
Andres@enobacon oh man, there goes your emergency water supply for when you're stranded! 🙃
@enobacon FWIW I've definitely read mentions of using a throttle as a way to vary braking force, but I dunno if it requires more than just plugging it into the CA. Please share if you try it!
Peter Drake HAS MOVED@enobacon I don't have one, but if all else fails Metal Supermarket can make this for you.
@enobacon I wouldn't :) I'd put a spacer in that gap. High density plastic like nylon or just some old tube rubber folded up.
@Karstan The hose clamps are going to want to pull it over to center on the stay though. This bracket has a bunch of offset in the other direction but I can't use that adjustment. Maybe a longer connector bolt and an aluminum spacer between the arm and the mounting bracket.
@enobacon not by the hair of my shimmy shim shim
Forrest@enobacon I’d check in with Grin - I bet they’d have options!
@enobacon lol, so much of bike stuff is "this bolt is 1mm too long, I need to add a washer" or "this frame is 3mm to narrow, I need to bend/grind/shave it a little bit"
@Karstan iff you're careful not to let it walk out of the dropout on the way back, but how far do I need to go to get plastic deformation? Went to 150, still at 131 😞
@enobacon Oh wow! I never had springback that high. The couple times I did it I think I had to go about about 2x the change I was hoping for (eg stretch 16mm for 8mm change).
@Karstan the axle I got only goes to 180, and wrenching on that is tedious. I've never done a 20in one
Sam Levine@enobacon Was it all the cookies you ate? /s
@SRLevine it's only the unsprung weight that you have to worry about 😂
@enobacon ooooohhh 👀
@fbaum this BikeFriday tandem
@enobacon Grin!!! 😍🥰