Search found 295 matches

by PaulD
Mar 19 2020 3:08pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Dogboy1200 wrote:
Mar 19 2020 10:25am
Now these are out https://www.harley-davidson.com/us/en/m ... bikes.html. Too Cool!
Looks like a Stacyc. Oh. just checked and Harley purchased Stacyc.
by PaulD
Mar 19 2020 9:15am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Dogboy1200 wrote:
Mar 18 2020 4:05pm
Paul, I think there's a market for a smaller lower powered version of your system for kids bikes.
I definitely want to do a smaller lighter system some day. Do you think a torque sensor or throttle would be better for kids?
by PaulD
Mar 18 2020 12:37am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

ScooterMan101 wrote:
Mar 17 2020 11:36pm
Same Plugs ?
No, it's a standard female DC barrel on the battery. The customer plugged into the light connector located on the display cable (which is a male DC barrel) with a 3rd party charger.
by PaulD
Mar 17 2020 10:50pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Just some entertainment for everyone stuck at home due to the pandemic. This is what happens when a customer connects their charger to the 6V headlight circuit of the ASI.
IMG_20200317_154001_copy_1012x759.jpg
IMG_20200317_154001_copy_1012x759.jpg (231.52 KiB) Viewed 252 times
by PaulD
Mar 17 2020 10:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

I just measured my bikes and it looks like your q factor is only +5mm of my widest setup, nice. Apparently the narrower the better for biomechanics. Compared to most mid drives your system is pretty narrow. Kudos on that! Yep, for some people narrow is really important, I totally understand. I real...
by PaulD
Mar 17 2020 3:25pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Probably both. When my gym switched their exercise bikes to ones that had an additional inch of pedal width ( 7 inches vs the previous 6 ), i stopped using them because they hurt on both legs. A 3mm offset can be easily overcome with a pedal washer on one side, but yes, a 6" (152mm) q factor is har...
by PaulD
Mar 16 2020 11:22pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Oh darn, that's not compatible with my bizarre leg issues ( i know this from riding other mid drives ), glad i asked before ordering. GL with your really cool drive system otherwise. Is it the q-factor or the offset that's an issue for you? Interesting. That looks a lot like Sempu but not quite. Ho...
by PaulD
Mar 16 2020 1:50pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Will you be able to supply a female to fit to the battery I supply and possibly another male plug to fit to whichever battery charger I end up using ? Yes, I can include this with kits shipped without batteries. We use an XT60 connector which is quite common. What’s the front chainring 42 tooth? In...
by PaulD
Mar 16 2020 1:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

quick question, does one pedal have more outward offset than the other? if so, how much? wanna know if th q factor is even. With the new torque sensor, Q-factor is about 180mm for a 73mm BB. I measure about 90mm each side +/- a few mm. I switched from Miranda 4mm offset cranks to 0mm since the Erid...
by PaulD
Mar 16 2020 11:33am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development - Looking for Beta Testers

Things have been a bit quiet around here (i have not been back for quite some time myself) but its nice to see you have been planning/scheming/working away in the back ground developing this product and still carrying the torch of innovation! Very tidy, I commend you on your effort and vision. By t...
by PaulD
Mar 15 2020 3:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

lightrush wrote:
Mar 14 2020 4:18pm
What new torque sensor?
I've been having good results with the Erider for the last 6 months, so we are going with it. Here it is with the new freewheel hub.
IMG_20200315_094502_copy_2024x1518.jpg
IMG_20200315_094502_copy_2024x1518.jpg (333.19 KiB) Viewed 493 times
by PaulD
Mar 13 2020 10:40pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

lightrush wrote:
Mar 13 2020 6:28pm
So when can we buy one?
Parts are trickling in. Just received freewheel parts today. Mounting plates should be here Monday, but they need to go out for anodizing. These parts are to accommodate the new torque sensor that is more robust than the Sempu. We should have kits ready in 2 weeks.
by PaulD
Mar 12 2020 12:06am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

But the BAC500 supports 48V. Wouldn't it just work if I plug in my 48V battery? Controllers are programmed for a specific voltage. It is certainly possible to program it to work over a wide range of voltages, but you lose the ability to cutback current/power at low SOC and to prevent regen from cau...
by PaulD
Mar 11 2020 11:40pm
Forum: E-Bike Build Threads / Photos & Video
Topic: BAC800 with CYC X1 Pro
Replies: 5
Views: 381

Re: BAC800 with CYC X1 Pro

I recently got my CYC X1 Pro up and running with the BAC800. Its been a lot of fun riding it around town on my commute. Lots of work to do on it still but LiPo seems the way to go to get the most out of this motor! Looks like Kamloops BC? As I mentioned on FB, I got my BAC800 Gen 2 direct from CYC ...
by PaulD
Mar 09 2020 4:01pm
Forum: Resources & EV Related Parts and Services
Topic: REVX Manufacturer Info Questions and Answers
Replies: 20
Views: 1144

Re: REVX Manufacturer Info Questions and Answers

What kind of travel for the suspension? It seems from the back of my mind there was some talk way back when around the launch of the RevX that is should have linkage rear suspension but from what I saw in recent pics it seems it does not? Looks like a Horst Link rear suspension to me. Great to see ...
by PaulD
Feb 20 2020 4:08pm
Forum: Battery Technology
Topic: Wire Bonding machines
Replies: 8
Views: 1145

Re: Wire Bonding machines

Thanks for the follow up! Interesting to see how spendy even the Chinese machine is. I've been tempted to buy a 1980s heavy wire bond head off of ebay and mounting to a CNC router if I had the time. That would be a big project. Hope you're able to share more as you start welding packs.
by PaulD
Feb 17 2020 12:03pm
Forum: Battery Technology
Topic: Bosch powertube repair
Replies: 6
Views: 391

Re: Bosch powertube repair

All the cells are LG 3500mah. They are all discharged to just a few Millivolts. It's not recommended to revive cells that have been discharged below about 1V. At low voltage copper tends to dissolve into the electrolyte and gets re-deposited onto the electrode during charging, and cause shorts. Man...
by PaulD
Feb 17 2020 12:40am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Nobreaks wrote:
Feb 13 2020 6:17am
Great work!
Very interested in buying a Midrive kit as well
Is Australia to far for u to freight once you have stock to sell
Thanks Nobreaks! We can only ship the kit without battery to Australia. Battery shipping overseas is a mess.
by PaulD
Feb 17 2020 12:38am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Grantmac wrote:
Jan 07 2020 10:45pm
Still running the BAC500? What sort of torque figures?
Yup, BAC500, aiming for 75 Nm.
by PaulD
Feb 17 2020 12:36am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 472
Views: 68413

Re: GNG / CYC X1 Pro 3000w

I guess its time to try a new controller. Is the Phaserunner a good choice? it looks more plug and play then most controllers and looks pretty user friendly to get 2500W at 14s (50Voltx 50amps). What du you guys think? I just received a Gen 2 with a BAC800 controller, so a Phaserunner should be fun...
by PaulD
Jan 24 2020 10:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: 1.7kg 1000w mid drive
Replies: 50
Views: 6035

Re: 1.7kg 1000w mid drive

How much reduction in chain life are you guys seeing? The Bosch bikes with about half the power and 15-20T sprockets apparently eat through chains really quickly.
by PaulD
Jan 07 2020 5:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Any chance that this more powerful version will work with 48v or higher batteries? I might have missed this somewhere, but what is the current chainline and is it achieved with any sort of special offset chainring? There have been quite a few requests for 48V. What is the reason you want to use 48V...
by PaulD
Jan 07 2020 3:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 132
Views: 20296

Re: PaulD's lightweight mid drive development

Any update on the production run of the mid drives. Also, I’d love to hear about any of the “v2” tweaks. -Dave Hi Dave, I'm aiming for the end of February. There are a lot of changes coming, so I hope it will be worth the wait. Here is the tentative list of updates: Power Increase - We have been te...
by PaulD
Dec 25 2019 12:40pm
Forum: E-Bike Technical
Topic: Looking for someone to help configure/tune asi 8000 controller
Replies: 13
Views: 1025

Re: Looking for someone to help configure/tune asi 8000 controller

Paul in the meantime before the motor gets here, as you mentioned for the harness, the following is how i have it set up. Correct me if im wrong on anything. Below is the pin out for the asi controller. Im still a bit confused on what pin 5 is for in the asi harness. And for the on off, i noticed t...
by PaulD
Dec 23 2019 12:56pm
Forum: E-Bike Technical
Topic: Problem setting limits on Bac800.
Replies: 8
Views: 746

Re: Problem setting limits on Bac800.

The speed limit, wattage limit, motor current limit is not obayed. I do not have BACdoor, i have no login credentials for that app. I have quite a few Eggriders in service. I have one that does not enforce speed limit after about a year of use (the limit defaults to the controller settings if it is...