pushkar
Well-Known Member
Yup. Thanks
We want to build around easily available parts. Long term Future part support is a critical requirement for anything we churn out.
~50 lbs, full featured Watt Wagons City Commuter! Class 3 with throttle, $3199, optional electronic shifting, shipping July !
- Thread starter pushkar
- Start date
Yup. Thanks
We want to build around easily available parts. Long term Future part support is a critical requirement for anything we churn out.
pushkar
Well-Known Member
Hmm.. I didn't realize Luna also picked the SA 5 speed! that's funny! For us it is 1/2 lb lighter than the shimano manual shifting version, so we went with SA as the default option.
Shimano 5 speed electronic shifting adds nearly 2-3 lb more to the bike weight (more cables, battery weight etc, so it is an upgrade option).
What was the issue with SA? Link please.
TomD
Well-Known Member
Here is the support thread. Just didn't seem people liked how it shifted and some of the strange noises but maybe it's just a matter of getting used to things:
Luna BABE bike - Electricbike.com Ebike Forum
babe.jpg Warning, would should never shift under load (that includes throttle and pedal), you can pedal while shifting but you need to avoid putting any pressure on the pedals! It's the same for all IGH hubs (ebikes or non-ebikes). Shifting under load will likely result in a misshift, permanent...
electricbike.com
Luna BABE bike - Electricbike.com Ebike Forum
babe.jpg Warning, would should never shift under load (that includes throttle and pedal), you can pedal while shifting but you need to avoid putting any pressure on the pedals! It's the same for all IGH hubs (ebikes or non-ebikes). Shifting under load will likely result in a misshift, permanent...
electricbike.com
Explorer-1
Have bike, will travel
- Region
- USA
- City
- Boston North Shore
Available speed, does not mean you need to use it as with every automobile sold, you have to use an appropriate speed for the current conditions and situation. That motor sounds like a dream to me, loads of torque and speed when needed, and unbelievably light weight.
pushkar
Well-Known Member
Hmm.. that is ... interesting. I am going to ask a couple of early pre-release customers to test more. I will also do more climbs on our test rig to see if I can re-produce any of these.
TomD
Well-Known Member
Luna also doesn't seem to think it can handle more than the stock power of the M600 as they won't offer the higher powered controller. It will be interesting to see how the Warthog fares pairing the Sturney Archer with the Ultra. 
boltonebikes.com
Warthog MD1000 - 1000 watt mid-drive motor - Belt Drive
Introducing the MD1000 from Bikonit! A brand new bike that's an absolute killer. This is the mid-drive version of the bike. If you're looking for the hub motor version, click here. POWER Bafang Ultra G510 Mid-Drive Motor 1500W Peak Output 160NM Torque, 500Lbs Towing Max Speed electronically...
boltonebikes.com
pushkar
Well-Known Member
Yikes. I can replicate the jumping it if I do offroad only ... like grass, throttle up a 30% incline, max assist and highest gear. It is not terrible but not ideal.
Also - Looks like that amount of stress damaged the hub, and now I can replicate it even at at lower assist. Clearly not ideal. I did not see that issue on Shimano Nexus 5 speed (thats the other hub)
I am switching to Shimano SG-C7000-5D for the base config. It adds a wee bit more weight (right around 51lb) but definitely no issues on those. Still within the spec without a lot of compromises.
THANK YOU for highlighting this. Clearly i missed testing this specific scenario.
I will post pics of the electronic shifting of my test rig after i clean up the bike a bit. Hopefully by the weekend.
Also - Looks like that amount of stress damaged the hub, and now I can replicate it even at at lower assist. Clearly not ideal. I did not see that issue on Shimano Nexus 5 speed (thats the other hub)
I am switching to Shimano SG-C7000-5D for the base config. It adds a wee bit more weight (right around 51lb) but definitely no issues on those. Still within the spec without a lot of compromises.
THANK YOU for highlighting this. Clearly i missed testing this specific scenario.
I will post pics of the electronic shifting of my test rig after i clean up the bike a bit. Hopefully by the weekend.
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pushkar
Well-Known Member
1 month of Zoom credits ?
done! and done!
pushkar
Well-Known Member
Man... seriously.. happy path testing, light off road.. everything worked. When i tried this one random stress test, it actually broke. Ugh.
I have updated the post to reflect updated spec.
You guys just saved me hours of headaches and bad reviews. Thanks!
pushkar
Well-Known Member
If I can break it with 500W nominal and going up an include with throttle, the ultra will shred it in no time.Luna also doesn't seem to think it can handle more than the stock power of the M600 as they won't offer the higher powered controller. It will be interesting to see how the Warthog fares pairing the Sturney Archer with the Ultra.
Warthog MD1000 - 1000 watt mid-drive motor - Belt Drive
Introducing the MD1000 from Bikonit! A brand new bike that's an absolute killer. This is the mid-drive version of the bike. If you're looking for the hub motor version, click here. POWER Bafang Ultra G510 Mid-Drive Motor 1500W Peak Output 160NM Torque, 500Lbs Towing Max Speed electronically...
I confess, my "babe"s hub does this and I back off. it doesn't seem to have permanent damage. I can work with it, but it is not ideal in a new bike. if I knew you were building this I would not have bought the babe, and I would have let you know sooner. I saw IGH, belt, throttle, bluto fork, and I spent the money I would otherwise have laid down as a deposit on the superbike. I still like the bike. I can work with the hub as it is, but would happily swap out the rear hub.
and, CLEARLY, I have TOO many bikes.
and, CLEARLY, I have TOO many bikes.
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
For sure! I call it the disease of N+1... far more dangerous than COVID-19.
Actually, I am now thinning the herd and selling a few acoustic bikes as the Pandemic has created a Bike Boom locally.
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I thought this was a support group?
admitting the problem is the first step to recovery
and I sold one too.
turns out the people like these contraptions
I've yet to find an ebike with a ventilator attachment
smorgasbord
Well-Known Member
- Region
- USA
Short hills was our use case for SFO terrain btw..
I know this is a commuter bike, but here in the Bay Area we've got some major on-road climbs. I assume you've seen the movie Bullit?
Here's the ride my wife and I did on Mother's Day. Almost 3000' feet of elevation gain over 28.6 miles. 12% max grade actually isn't too steep.
We've done this ride previously. 42 miles, up to 15% grade, over 4900' feet of elevation gain. You can see from the pictures why we do rides like these.
Commuting in SF could mean tackling hills like these: https://blog.sfgate.com/bicycle/2011/06/26/riding-the-seven-hells-of-san-francisco/ (Yeah, that's 7 "hills" in one ride!). Some of those get up to 30% grade! The sidewalks have steps molded into them they're so steep.
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