AVIAN featherweight mid drive

General Discussion about electric bicycles.
SlowCo   100 kW

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Re: AVIAN featherweight mid drive

Post by SlowCo » Nov 16 2017 7:27am

:shock: Wow. Fantastic workmanship!
Now waiting for a ride review and video 8)

Mongo1   10 mW

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Re: AVIAN featherweight mid drive

Post by Mongo1 » Nov 16 2017 1:02pm

One of the best looking battery holders!!!

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Nov 19 2017 9:43pm

SlowCo wrote:
Nov 16 2017 7:27am
:shock: Wow. Fantastic workmanship!
Now waiting for a ride review and video 8)
Not so fast eager beaver. I still need to wire a BMS, a fuse and a power switch. :D
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

SlowCo   100 kW

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Re: AVIAN featherweight mid drive

Post by SlowCo » Nov 20 2017 9:21am

Ecyclist wrote:
Nov 19 2017 9:43pm
SlowCo wrote:
Nov 16 2017 7:27am
:shock: Wow. Fantastic workmanship!
Now waiting for a ride review and video 8)
Not so fast eager beaver. I still need to wire a BMS, a fuse and a power switch. :D
Please hurry... :wink: :mrgreen:

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Ecyclist   1 kW

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Re: AVIAN featherweight mid drive

Post by Ecyclist » Nov 23 2017 1:04am

Time to do some real riding.
Going for the hills.JPG
Going for the hills.JPG (112.61 KiB) Viewed 2966 times
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Nov 28 2017 10:15pm

I took the bike on a single track around Lake Miramar. I was very happy with everything, but had one little problem. Under heavy load, I was getting a hick-up. It was hard to tell what was going on, but once I put the bike on the hydraulic trainer and applied the rear brake, I realized that under heavy load my motor chain tensioner was going a little out of alignment, and the chain was not perfectly in line with the chainring. Under normal circumstances, this wouldn't be a problem, but I had very little space between the chainring and tensioner, which it turned out that this was not good.
I decided to reverse the tensioner and the problem is gone.
At this point, the total weight of the bike, including the battery, is 46 lb. My goal was to be under 50 lb. so I'm happy with that.
I will play with the bike for now, and install a bigger motor later. It is actually amazing how well this little motor is running.
Avian with reversed chain tensioner.JPG
Avian with reversed chain tensioner.JPG (152.24 KiB) Viewed 2924 times
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

SlowCo   100 kW

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Re: AVIAN featherweight mid drive

Post by SlowCo » Nov 29 2017 5:01am

Gorgeous! 8)
Eagerly waiting for a ride video... :mrgreen:

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Dec 03 2017 4:51pm

All aluminum parts for the battery case and the controller case are at anodizing process.
I switched my focus to the battery system. I'm going to install a 16A BMS just for charging and two battery testers for monitoring battery voltage. This way I will be able to keep track of battery group health individually. VESC will control low voltage of the pack. With VESC you can program both soft and hard battery cut-off voltage.
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Dec 12 2017 10:48am

Parts are back from anodizing and the battery pack is back together. I installed the anti spark connector and two battery testers. Unfortunately, the cheap BMS was not working as it should, so I ordered a new one, and I will plug it in once it comes.
I still need to install the meter switch and total voltage meter. This is going to be my fuel gauge.
The pack with testers..JPG
The pack with testers..JPG (149.08 KiB) Viewed 2767 times
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

Mongo1   10 mW

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Re: AVIAN featherweight mid drive

Post by Mongo1 » Dec 12 2017 12:21pm

Ecyclist wrote:
Dec 12 2017 10:48am
Parts are back from anodizing and the battery pack is back together. I installed the anti spark connector and two battery testers. Unfortunately, the cheap BMS was not working as it should, so I ordered a new one, and I will plug it in once it comes.
I still need to install the meter switch and total voltage meter. This is going to be my fuel gauge.
The pack with testers..JPG
Just an FYI, I went through a similar process in monitoring/controlling power but ended up simply installing a Cycle Analyst (CA3) to do it all and more (I.e.: adding Pedal Assist mode).

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Dec 12 2017 6:44pm

Mongo1 wrote:
Dec 12 2017 12:21pm
Ecyclist wrote:
Dec 12 2017 10:48am
Parts are back from anodizing and the battery pack is back together. I installed the anti spark connector and two battery testers. Unfortunately, the cheap BMS was not working as it should, so I ordered a new one, and I will plug it in once it comes.
I still need to install the meter switch and total voltage meter. This is going to be my fuel gauge.
The pack with testers..JPG
Just an FYI, I went through a similar process in monitoring/controlling power but ended up simply installing a Cycle Analyst (CA3) to do it all and more (I.e.: adding Pedal Assist mode).
Thanks for the tip.
I have CA3 on my first build and I like it for smoothing out power delivery, but that's about it.
I can use VESC for that and everything else I need (probably not Pedal Assist mode, but then again, maybe someone already figured that out).
I like to have battery meter and testers, so that I can monitor battery charging process indoors and away from the bike.
I don't trust BMS, and with testers I have full control over what is going on with the battery. You can call me a control freak. :D
Are you sure that you can monitor individual battery groups with CA3?
I probably should revisit CA as a possible option. Last time I looked into it was about a year ago.
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

Mongo1   10 mW

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Re: AVIAN featherweight mid drive

Post by Mongo1 » Dec 13 2017 10:17am

Ecyclist wrote:
Dec 12 2017 6:44pm
Mongo1 wrote:
Dec 12 2017 12:21pm
Ecyclist wrote:
Dec 12 2017 10:48am
Parts are back from anodizing and the battery pack is back together. I installed the anti spark connector and two battery testers. Unfortunately, the cheap BMS was not working as it should, so I ordered a new one, and I will plug it in once it comes.
I still need to install the meter switch and total voltage meter. This is going to be my fuel gauge.
The pack with testers..JPG
Just an FYI, I went through a similar process in monitoring/controlling power but ended up simply installing a Cycle Analyst (CA3) to do it all and more (I.e.: adding Pedal Assist mode).
Thanks for the tip.
I have CA3 on my first build and I like it for smoothing out power delivery, but that's about it.
I can use VESC for that and everything else I need (probably not Pedal Assist mode, but then again, maybe someone already figured that out).
I like to have battery meter and testers, so that I can monitor battery charging process indoors and away from the bike.
I don't trust BMS, and with testers I have full control over what is going on with the battery. You can call me a control freak. :D
Are you sure that you can monitor individual battery groups with CA3?
I probably should revisit CA as a possible option. Last time I looked into it was about a year ago.

Sorry, no provision to monitor separate battery groups (only different/switchable battery packs, I.e.: 36V, 48V, etc.)

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Ecyclist   1 kW

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Re: AVIAN featherweight mid drive

Post by Ecyclist » Dec 23 2017 3:13pm

Volt meter and switch are in, and the battery is fully functional.
Avian with battery.JPG
Avian with battery.JPG (109.36 KiB) Viewed 2643 times
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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Rikobonito   100 W

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Re: AVIAN featherweight mid drive

Post by Rikobonito » Feb 19 2018 9:09pm

Hooooooooo man ! seeing all this is crazy :!:
Your cell holder, hypocycloidal transmission, ... so many details, it a real peace of art !!
So many question, I really have to start a topic :mrgreen:

Can't wait to see your next upgrade 80mm +++ :P
my little blog with e-sk8, e-Cruiser, e-pintail, e-MTBoard, e-Dirt Scooter and others builds
... I wish also an e-MTBike soon !! :v: Thanks DIY Power community :wink:

Matt_92   100 mW

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Re: AVIAN featherweight mid drive

Post by Matt_92 » Feb 22 2018 9:01am

I can't wait to see the follow up with 80mm motor :D
...from France, sorry for my english :oops:

ScooterMan101   1 MW

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Re: AVIAN featherweight mid drive

Post by ScooterMan101 » Mar 28 2018 10:55am

Great Drive ,

The West Coast U.S.A. seems to be the place of great design and development on what will be the new generation of Mid-Drives.
My first conversion ... Sold

viewtopic.php?f=3&t=71378&p=1077497&hil ... 1#p1077497

It's 2018 already, lets get some real , improved e-bike / e-velomobile / e-motorcycle designs .

markz   100 GW

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Re: AVIAN featherweight mid drive

Post by markz » Mar 28 2018 12:43pm

What motors did you use?
Which motor is the 6kw?

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Apr 01 2018 12:05pm

At this point, the bike is running on 6374 3200W Alien motor and is a real joy to ride. I have an 80 mm 6000w Alien motor that I'm going to use.
http://alienpowersystem.com/shop/brushl ... 5kv-6000w/
The problem is that I had the flu and was in bed for 5 weeks, and now I have to play catch-up game with my regular work and make-up game because I will be going for a 4 weeks vacation. So, the the bike build is on hold. Life is rough. :D
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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Ecyclist   1 kW

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Re: AVIAN featherweight mid drive

Post by Ecyclist » Aug 31 2018 5:11pm

Unorthodox way of the balancing battery pack.
Balancing battery pack.JPG
Balancing battery pack.JPG (101.7 KiB) Viewed 1372 times
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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madin88   100 MW

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Re: AVIAN featherweight mid drive

Post by madin88 » Sep 01 2018 3:48am

Ecyclist wrote:
Aug 31 2018 5:11pm
Unorthodox way of the balancing battery pack.
looks like you did connect all groups in parallel. why not :) , but why you don't add a BMS?
- 10kW belt drive with Neumotor 8057: viewtopic.php?f=30&t=91144&start=50#p1377787
- Fully road legal (L1E approval) e-bike based on Votec V-FR frame
/ MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R
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Ham   1 kW

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Re: AVIAN featherweight mid drive

Post by Ham » Sep 01 2018 9:43am

Beautiful work Sir
http://www.HamsFitness.com Strength, Conditioning & Diet

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Ecyclist   1 kW

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Re: AVIAN featherweight mid drive

Post by Ecyclist » Sep 01 2018 3:42pm

madin88 wrote:
Sep 01 2018 3:48am
Ecyclist wrote:
Aug 31 2018 5:11pm
Unorthodox way of the balancing battery pack.
looks like you did connect all groups in parallel. why not :) , but why you don't add a BMS?
This is my second pack. My first pack had a BMS, but it was doing bad job balancing the pack so at this point I'm using battery testers.
I'm still wired for a BMS.
I took a look at your build and I'm very impressed. Can you recommend a BMS for 10S and 60 maybe 90 Amps?
What BMS are you using now?
Thanks!
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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notger   100 W

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Re: AVIAN featherweight mid drive

Post by notger » Sep 01 2018 3:55pm

Ecyclist wrote:
Sep 01 2018 3:42pm
Can you recommend a BMS for 10S and 60 maybe 90 Amps?
As Examples

http://www.chargery.com/BMS16.asp

https://bmsbattery.com/bmspcm/833-smart ... s-app.html

or from the E-skate community

https://www.electric-skateboard.builder ... h-can/2639

and probably there are more interesting opensource BMS project out there

greets Notger

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Ecyclist   1 kW

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Re: AVIAN featherweight mid drive

Post by Ecyclist » Sep 01 2018 7:59pm

notger wrote:
Sep 01 2018 3:55pm
Ecyclist wrote:
Sep 01 2018 3:42pm
Can you recommend a BMS for 10S and 60 maybe 90 Amps?
As Examples

http://www.chargery.com/BMS16.asp

https://bmsbattery.com/bmspcm/833-smart ... s-app.html

or from the E-skate community

https://www.electric-skateboard.builder ... h-can/2639

and probably there are more interesting opensource BMS project out there

greets Notger
Thank you Notger!
That esk8 BMS looks great. I will give it a try.
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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Ecyclist   1 kW

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Location: San Diego, California

Re: AVIAN featherweight mid drive

Post by Ecyclist » Sep 16 2018 8:25pm

I put myself on the list to buy one or two of these esk8 DieBieMS BMS. It looks like it will take a while to get commitment for 50 units to manufacture the next batch.
I was very excited about getting those puppies, but all that evaporated by now. So far, they sold in the past about three dozen of these units, and users who own them are having all kinds of questions (read problems). Builder and seller (two different guys) are not willing to come up with clear instructions. It is a cool project, but it can be PITA in real life situation. Other 60A and up BMS boards are too wide for my case.
I decided to electrically split my battery pack. Now I can charge it bulk with 42V charger, or I can balance charge it with SKYRC iMAX B6AC hobby charger. I need to do it about every 30 charges, and with this set-up I can go up to 12S, if I want to. I can control amps. with VESC and I monitor cells with small volt meter and two battery testers / loggers. All cheap and bomb proof stuff.
I use XT-90 Anti-Spark Connector for bulk charging and power delivery and two XT-60 connectors for balance charging.
From my perspective, this is the best set-up.
New battery set-up.JPG
New battery set-up
Don't expect from life to be easy and then it will be.
My builds:
Avian with hypocycloidal drive https://endless-sphere.com/forums/viewt ... 2#p1318056
2016 GNG extreme drive https://endless-sphere.com/forums/viewt ... 28&t=82252

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