Search found 310 matches

by Grantmac
May 16 2019 10:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Cheap Sachs XR1 upgrade
Replies: 19
Views: 445

Re: Cheap Sachs XR1 upgrade

He's not looking to drive through the IGH gears, he wants to drive the shell.

Personally I'd just get a different frame with v-brakes and bolt a sprocket directly to where the disc would go. A 135mm rear doesn't offer much room.
by Grantmac
May 16 2019 10:26pm
Forum: General Discussion
Topic: The keto thread
Replies: 55
Views: 1070

Re: The keto thread

I'm fortunate in that I was very physically active before injury then under the care of a physiotherapist right away before and after surgery. Some motions still aren't great but strength I'd coming back enough to be windsurfing and motorcycling. It just tires and gets inflamed easily, but low carb ...
by Grantmac
May 16 2019 5:08pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Cheap Sachs XR1 upgrade
Replies: 19
Views: 445

Re: Cheap Sachs XR1 upgrade

Does it have to be an IGH and could you perhaps spread the drop outs?
by Grantmac
May 16 2019 5:01pm
Forum: Motor Technology
Topic: Complete re-design of a second-hand motor
Replies: 5
Views: 130

Re: Complete re-design of a second-hand motor

By the time you've done any of that you simply could have bought a 4.8kw Cyclone and controller. The batteries will cost the most anyways.
by Grantmac
May 16 2019 2:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 14
Views: 272

Re: Left side freewheeling cog with rotor

How much machining on the hub itself? Can you share a picture of the adapter?
by Grantmac
May 16 2019 2:08pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Cheap Sachs XR1 upgrade
Replies: 19
Views: 445

Re: Cheap Sachs XR1 upgrade

That's the one, similar overall length but less diameter to the Cyclone with its included gearbox.

It should perform well with a 12:1 or so reduction.
by Grantmac
May 16 2019 11:47am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 14
Views: 272

Re: Left side freewheeling cog with rotor

Specifics of the adapter used would be greatly appreciated. I have a similar idea in mind for a 150mm drop out bike, but not reinventing the wheel is much easier.
by Grantmac
May 16 2019 10:57am
Forum: E-Bike Build Threads / Photos & Video
Topic: Cheap Sachs XR1 upgrade
Replies: 19
Views: 445

Re: Cheap Sachs XR1 upgrade

I'd take a look at the QS1000 mid drive motor. It's 110mm OD but you can likely mount it ahead of the bottom bracket. Then run a first stage reduction to the left side crank before a second stage to the rear. For a commuter possibly run regen instead of a rear brake and just bolt a sprocket directly...
by Grantmac
May 15 2019 12:27pm
Forum: General Discussion
Topic: The keto thread
Replies: 55
Views: 1070

Re: The keto thread

I perform better endurance activities on a fast but admittedly limiting food (especially carbs) does impact my lifting. The problem is that I just don't cut weight very easily and tend to add it in the belly. I'm willing to accept a slower muscle growth in return for keeping it lean. I'm also still ...
by Grantmac
May 14 2019 6:36pm
Forum: General Discussion
Topic: Tesla switches to permanent magnet reluctance motors and sees range gains
Replies: 17
Views: 449

Re: Tesla switches to permanent magnet reluctance motors and sees range gains

So what are the disadvantages or issues implementing this tech into smaller vehicles?
by Grantmac
May 13 2019 3:04pm
Forum: Battery Technology
Topic: Solderless weldless 36V battery could do 200A
Replies: 47
Views: 1214

Re: Solderless weldless 36V battery could do 200A

So it's not simply a question of scaling the holder?
by Grantmac
May 13 2019 3:01pm
Forum: General Discussion
Topic: The keto thread
Replies: 55
Views: 1070

Re: The keto thread

I try to fast at least 14 hours preferably 18-20. Usually I quit eating around 830pm then start again after the gym at 1230-1pm.
I'm at a stable weight but trying really hard to increase muscle mass without gaining weight.
by Grantmac
May 13 2019 12:44pm
Forum: Battery Technology
Topic: Solderless weldless 36V battery could do 200A
Replies: 47
Views: 1214

Re: Solderless weldless 36V battery could do 200A

I'd love to see this scaled up to 26xxx series cells since there are a few offering excellent wh/$ these days. Plus many less connections to make.
by Grantmac
May 13 2019 12:35pm
Forum: General Discussion
Topic: The keto thread
Replies: 55
Views: 1070

Re: The keto thread

I LOVED flavored coffee creamer. Now it's a few drops of flavored stevia and maybe a tablespoon of heavy cream. Pushes all the right buttons with no impact on blood sugar so I can have it while fasting. Unfortunately heavy cream breaks a fast, physiologically.. cuz calories. When doing intermittent...
by Grantmac
May 12 2019 11:23pm
Forum: General Discussion
Topic: The keto thread
Replies: 55
Views: 1070

Re: The keto thread

I LOVED flavored coffee creamer. Now it's a few drops of flavored stevia and maybe a tablespoon of heavy cream. Pushes all the right buttons with no impact on blood sugar so I can have it while fasting.
by Grantmac
May 10 2019 10:26am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG X1-pro 3000w
Replies: 307
Views: 26261

Re: GNG X1-pro 3000w

Looks like the tensioner might not fit, so may need to use a fixed one with precise chain length.
by Grantmac
May 09 2019 6:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: GNG X1-pro 3000w
Replies: 307
Views: 26261

Re: GNG X1-pro 3000w

Foppel:

Do you think the short motor mount will work with a chain primary or just the gear setup?

-Grant
by Grantmac
May 09 2019 5:20pm
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 361

Re: Index of all left side chain + brake designs ?

I JUST had an idea.

Use a hub with centerlock disc, then run a 6 bolt adapter and use an off the shelf 6 bolt sprocket on the back side.
May require some spacers but those are easily found.
by Grantmac
May 09 2019 5:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 361

Re: Index of all left side chain + brake designs ?

I wonder if Evox would sell us hubs? That's an off the shelf option.
by Grantmac
May 09 2019 12:18pm
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 361

Re: Index of all left side chain + brake designs ?

If you had a larger enough rotor the caliper could run on the inside.

I still think that's not a good idea however since a steel sprocket that size would add a lot of weight.
by Grantmac
May 08 2019 11:04am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 79
Views: 2680

Re: ICE vs Electric Motor Transmissions

I should note in taking sustained 3kw, burst capability about twice that and 72v.
by Grantmac
May 06 2019 12:15pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Toyota Prius A/C Compressor Motorbike: The Bike of IPM Motor Science
Replies: 52
Views: 4234

Re: Toyota Prius A/C Compressor Motorbike: The Bike of IPM Motor Science

I was thinking about you offering a turn-key tuned controller for an off the shelf motor. Rather than focusing on a supply line that requires rebuilding surplus motors.
by Grantmac
May 04 2019 6:50pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3158
Views: 328265

Re: new cyclone 3000 w mid-drive kit?

When I built my new motor mounts I sized them exactly to be tight with a 410 sized chain. I've heard half links can't take as much power.