hillzofvalp
100 kW
...abandoning
mxlemming said:3kW+ with 0.2 or 0.25 laminations
135/142mm preferably through axle
Proper splined cassette fitting for 10/11 speed cassette
Large diameter torque arm mounts
Disc mounts
I.e. a high power hub motor that actually fits to mountain bikes without masses of frigging. I don't think there is one yet.
Chalo said:mxlemming said:3kW+ with 0.2 or 0.25 laminations
135/142mm preferably through axle
Proper splined cassette fitting for 10/11 speed cassette
Large diameter torque arm mounts
Disc mounts
I.e. a high power hub motor that actually fits to mountain bikes without masses of frigging. I don't think there is one yet.
"Masses of frigging" is what happened to MTBs in the last 20 years. Now we all live with the drawbacks as well as the benefits.
The more carbony, curvy, and non-truss-like MTBs become, the less capable they are to handle superhuman power levels.
I really doubt that 135mm spacing would allow room for a 10/11/12/13 speed cassette on one side, clearance for a disc caliper on the other, plus a stator wide enough to rate 3kW.
mxlemming said:The carbon vs aluminum myth was put to bed a long time ago.
I would think you would NOT want wiring routed through the axle. It's more prone to damage that way.markz said:How about an axle that can accommodate big ass phase wires with better wire routing to the outside.
Chalo said:That bike was plenty strong for doing what its designers had in mind, but not strong enough to resist a plastic wheel reflector. Are you willing to wager that your bike's designers were thinking about what you intend to do with your bike? Because if not, you'd probably be better off with an isotropic frame material.
mxlemming said:2) I'll wager that that pic is not as it seems. Someone's hammered that reflector through it, using a chisel or screwdriver to make the hole, it's photoshopped or maybe (unlikely) there's a serious carbon layup error resulting in no carbon atall in that area.
They don't even come with reflectors... i cannot find a single pic with reflectors on a trek madone. The model pictured had the doubled up blade spokes you couldn't even put reflectors on.Chalo said:mxlemming said:2) I'll wager that that pic is not as it seems. Someone's hammered that reflector through it, using a chisel or screwdriver to make the hole, it's photoshopped or maybe (unlikely) there's a serious carbon layup error resulting in no carbon atall in that area.
Nope.
http://pardo.net/bike/pic/fail-001/FAIL-116.html
I was still participating in rec.bicycles.tech when Andy Muzi of Yellow Jersey showed it to us.
I run no rear brake and regen on my ebike. I'm not entirely convinced by it. The controller occasionally trips and then i have no brake. I'd err on the side of making the disc Mount available, though you could double using it up?hillzofvalp said:How about designing it to bolt directly to the caliper mount? Without caliper in the rear there is more space for motor.. I don't see a real need for rear caliper with regen. I guess redundancy.. But you can run dual front calipers for redundancy. Idk, this might be a crazy idea
mxlemming said:They don't even come with reflectors... i cannot find a single pic with reflectors on a trek madone. The model pictured had the doubled up blade spokes you couldn't even put reflectors on.
hillzofvalp said:Hello,
It's been a while since I've been on this forum. Since then I designed a couple halbach outrunners and tooling to create them. I'm interested in applying my learnings and creating a nice halbach offering for ebikes.
What would you say are the specs of an ebike DD hub motor that is missing from the market?
Also, what would you say are the top 3 motors out right now, what are their specs, and do you have access to their magnetic geometries?