E-S Stealth Electric Bike Owners

Show off your Ebike creation here.
Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Sep 28 2019 5:02pm

Since I can lift my seat up to pedal better, my plan last night was to leave early, and pedal all the way downtown, 20 miles with no power. With only 19 2/3 miles to go, I finally gave up on that stupid plan, sheez :(

FL bomber   100 W

100 W
Posts: 173
Joined: Feb 12 2016 12:57pm

Re: E-S Stealth Electric Bike Owners

Post by FL bomber » Sep 28 2019 8:10pm

:mrgreen:
Theodore Voltaire wrote:
Sep 28 2019 5:02pm
Since I can lift my seat up to pedal better, my plan last night was to leave early, and pedal all the way downtown, 20 miles with no power. With only 19 2/3 miles to go, I finally gave up on that stupid plan, sheez :(
:lol: thanks for the laugh TV
Wouldn't want to do that on purpose.
I've done a 11 mile ride of Shame when I first got my bike.

litespeed   100 kW

100 kW
Posts: 1451
Joined: Aug 11 2010 4:42pm
Location: O’Fallon, Missouri

Re: E-S Stealth Electric Bike Owners

Post by litespeed » Sep 29 2019 9:14am

Theodore Voltaire wrote:
Sep 28 2019 5:02pm
Since I can lift my seat up to pedal better, my plan last night was to leave early, and pedal all the way downtown, 20 miles with no power. With only 19 2/3 miles to go, I finally gave up on that stupid plan, sheez :(
LMAO!
I'm married so you know I'm no stranger to pain!

User avatar
Rix   100 GW

100 GW
Posts: 7020
Joined: Mar 29 2012 11:26am
Location: Fallon NV USA

Re: E-S Stealth Electric Bike Owners

Post by Rix » Sep 29 2019 9:24pm

Theodore Voltaire wrote:
Sep 28 2019 5:02pm
Since I can lift my seat up to pedal better, my plan last night was to leave early, and pedal all the way downtown, 20 miles with no power. With only 19 2/3 miles to go, I finally gave up on that stupid plan, sheez :(
If there was a the best comment of the year award, on ES, this is it!!!

User avatar
Rix   100 GW

100 GW
Posts: 7020
Joined: Mar 29 2012 11:26am
Location: Fallon NV USA

Re: E-S Stealth Electric Bike Owners

Post by Rix » Sep 29 2019 9:46pm

Two P7s and a Beta
Bike show in Ohio
Attachments
1.jpg
1.jpg (475.39 KiB) Viewed 2725 times
2.jpg
2.jpg (297.99 KiB) Viewed 2725 times

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Sep 29 2019 9:59pm

There's a lot of good bike riders in Ohio. Did I mention I was born in Ohio?

User avatar
st35326   100 W

100 W
Posts: 281
Joined: Jan 26 2016 9:46am
Location: Modesto, CA

Re: E-S Stealth Electric Bike Owners

Post by st35326 » Sep 30 2019 2:20am

Theodore Voltaire wrote:
Sep 29 2019 9:59pm
There's a lot of good bike riders in Ohio. Did I mention I was born in Ohio?
Me too. O-H!!

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 01 2019 9:33am

This is all the way both directions. I have about 100 miles experience evaluating this dropper post now. Even though they're not specifically designed for motor bicycle use, motor bicycles are a perfect application.

Image

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 02 2019 1:22pm


Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 08 2019 5:58pm


Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 12 2019 9:48pm

Does anyone know if a heavy stealth rear wheel tends to need, faster, or slower rebound damping?

I'm guessing that because of the weight, you're going to say faster?

User avatar
Cowardlyduck   100 MW

100 MW
Posts: 2953
Joined: Jun 26 2011 8:41pm
Location: Canberra, ACT, Australia

Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 13 2019 4:36am

I tried faster and it nearly killed me a few times when launching off jumps and large humps. I've since toned the rear right down to a medium/slow point which works well enough and doesn't try and kill me.
This is for off-road riding mainly though...if I were only on the street like you a faster rear makes more sense. I still wouldn't max it out though as you would still be dealing with speed bumps and curbs, etc. A medium/fast setting would probably work well for most street.

Cheers
ebikegarage.com.au - My website
Ebike Garage - My YouTube Ebike ramblings.
Cowardlyducks - Videos - Ride videos
BikeE recumbent commuter - 9C, 6Fet Grinfineon, internal 17AH, 52V, + on-board solar.

Custom made 18650/21700 battery packs - Australia only

KarlJ   100 W

100 W
Posts: 212
Joined: Feb 23 2014 7:01am
Location: Melbourne

Re: E-S Stealth Electric Bike Owners

Post by KarlJ » Oct 14 2019 1:32am

BMS wiring done.
Very happy with it, Bluetooth settings and PPTC fuses added to the balance wires at cell ends, connected and sitting next to the neg sides of the battery cans.
got the 150A continuous version although next time i'd just get one that does minimum and simply bypass for discharge.

Very happy with range and performance, next time around i'll glue the cells together and fit an extra row in there and another set of 22 ontop hence should be able to fit 22S12P vs 10P I have.

All said and done have almost double the range a stock bomber had back in 2014. All in probably 24 man hours work, which I reckon i could halve with some practise.

Recycled all the original power cables and fibreglass sides that were on the original battery but they are all substantially trimmed down.

Height at 2.5cm for the BMS IS A PROBLEM - cut down the stock foam under the back by about half for the win.
Attachments
Screen Shot 2019-10-14 at 5.24.08 pm.png
Screen Shot 2019-10-14 at 5.24.08 pm.png (472.23 KiB) Viewed 2450 times
Screen Shot 2019-10-14 at 5.28.15 pm.png
Screen Shot 2019-10-14 at 5.28.15 pm.png (310.56 KiB) Viewed 2450 times

User avatar
Cowardlyduck   100 MW

100 MW
Posts: 2953
Joined: Jun 26 2011 8:41pm
Location: Canberra, ACT, Australia

Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 14 2019 4:06am

Nicely done Karl.

If you can build these in 12 hours each I may as well give up now. You could be onto a winner if you were willing to sell them.

Maybe I'm too meticulous, but my packs typically take 30-60 hours to make. Hence my pricing that many can't stomach.

Cheers
ebikegarage.com.au - My website
Ebike Garage - My YouTube Ebike ramblings.
Cowardlyducks - Videos - Ride videos
BikeE recumbent commuter - 9C, 6Fet Grinfineon, internal 17AH, 52V, + on-board solar.

Custom made 18650/21700 battery packs - Australia only

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 14 2019 10:47am

Thanks for your comments about adjusting the shock CD. That agrees with what I was thinking.

I started out in the middle, then tried 3 clicks slower, and 3 more clicks slower. I rode it like that for about a year. Recently I tried 3 clicks on the fast side of the middle, and decided it rides a little better. I reduced the preload slightly, and it feels softer riding that ever before.

The combination of my Fastrace shock, and these new Fox forks have transformed my bike into a really comfortable ride.

KarlJ   100 W

100 W
Posts: 212
Joined: Feb 23 2014 7:01am
Location: Melbourne

Re: E-S Stealth Electric Bike Owners

Post by KarlJ » Oct 14 2019 6:35pm

Cowardlyduck wrote:
Oct 14 2019 4:06am
Nicely done Karl.

If you can build these in 12 hours each I may as well give up now.

Cheers
The cell holders and using Solar panel bus tape and solder saved a heap of time over glue and spot welding which i've done before and yes thats painfully slow and mistakes unforgiving (take it apart again potentially damaging cells etc)

As for making them commercially, like most things - better with practise. the extra time to make the pack bigger is enormous and we're lucky that 3500mAh cells are available and basically inexpensive.

User avatar
Cowardlyduck   100 MW

100 MW
Posts: 2953
Joined: Jun 26 2011 8:41pm
Location: Canberra, ACT, Australia

Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 15 2019 2:26am

If your soldering and using holders then there's hope for me yet.

See how long it lasts you, but I don't think there's many around here that will think soldering 18650's is a good idea, myself included.

Good luck!

Cheers
ebikegarage.com.au - My website
Ebike Garage - My YouTube Ebike ramblings.
Cowardlyducks - Videos - Ride videos
BikeE recumbent commuter - 9C, 6Fet Grinfineon, internal 17AH, 52V, + on-board solar.

Custom made 18650/21700 battery packs - Australia only

User avatar
bigbore   10 kW

10 kW
Posts: 541
Joined: Sep 25 2009 7:43am
Location: Italy

Re: E-S Stealth Electric Bike Owners

Post by bigbore » Oct 15 2019 12:03pm

Cowardlyduck wrote:
Oct 14 2019 4:06am
Nicely done Karl.

If you can build these in 12 hours each I may as well give up now. You could be onto a winner if you were willing to sell them.

Maybe I'm too meticulous, but my packs typically take 30-60 hours to make. Hence my pricing that many can't stomach.

Cheers
About 60 hours is the time I spent when I built my 20S14P battery last year and used a spotwelder as Cowardlyduck.
Today after about 57 cycles it is still ok and considering that often at night I cover a few km at full speed at about 100km/h (10-11kW) I would say that I can be satisfied with the result.

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 15 2019 2:01pm

Since we're talking battery's, how would you rate this one I bought last December? It's had one hot summer season behind it now, and so far so good, I think. Since new it would come off the charger at 84v, but an hour later it would drop to about 83.8v and sit there another day maybe, and drop to 83.5v. Under full load it sags about 5v. In the first half of the charge above 72v, my bike is fast as stink. My question is, does this is sound normal?

It's made with Samsung 30Q, is 20s8p, and 80/200 bms.

KarlJ   100 W

100 W
Posts: 212
Joined: Feb 23 2014 7:01am
Location: Melbourne

Re: E-S Stealth Electric Bike Owners

Post by KarlJ » Oct 15 2019 7:19pm

Theodore Voltaire wrote:
Oct 15 2019 2:01pm
Since we're talking battery's, how would you rate this one I bought last December? It's had one hot summer season behind it now, and so far so good, I think. Since new it would come off the charger at 84v, but an hour later it would drop to about 83.8v and sit there another day maybe, and drop to 83.5v. Under full load it sags about 5v. In the first half of the charge above 72v, my bike is fast as stink. My question is, does this is sound normal?

It's made with Samsung 30Q, is 20s8p, and 80/200 bms.
Sounds AOK to me.
My sag under load was 3-5V depending on SOC a couple of volts more now the BMS is in there (so similar to yours now) but i can live with that for the peace of mind that if something goes wrong with the charger i dont a) damage the battery b) burn the house down.
20S8P is 160 cells @3AH cells is 1.7kWh vs my 220cells 22S10P @3.5Ah cells nominal 2.7kWh.
Just goes to show the cell tech we have now vs back in 2011 when the bomber came out people reported getting just 1.2kWh out of the pack - still huge for its time of course.

User avatar
Cowardlyduck   100 MW

100 MW
Posts: 2953
Joined: Jun 26 2011 8:41pm
Location: Canberra, ACT, Australia

Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 16 2019 3:12am

bigbore wrote:
Oct 15 2019 12:03pm
About 60 hours is the time I spent when I built my 20S14P battery last year and used a spotwelder as Cowardlyduck.
Today after about 57 cycles it is still ok and considering that often at night I cover a few km at full speed at about 100km/h (10-11kW) I would say that I can be satisfied with the result.
Glad I'm not the only one.
My 14S14P pack in my Fighter is similarly still going strong. I've only done about 5 cycles on it...really need to get out more. Too busy building everyone else's packs. :lol: :roll:

Cheers
ebikegarage.com.au - My website
Ebike Garage - My YouTube Ebike ramblings.
Cowardlyducks - Videos - Ride videos
BikeE recumbent commuter - 9C, 6Fet Grinfineon, internal 17AH, 52V, + on-board solar.

Custom made 18650/21700 battery packs - Australia only

KarlJ   100 W

100 W
Posts: 212
Joined: Feb 23 2014 7:01am
Location: Melbourne

Re: E-S Stealth Electric Bike Owners

Post by KarlJ » Oct 16 2019 6:05pm

Cowardlyduck wrote:
Oct 16 2019 3:12am
[ I've only done about 5 cycles on it...really need to get out more. Too busy building everyone else's packs. :lol: :roll:

Cheers
You sure do, done ~1000kms on mine since i got it a few months back. guessing thats around 30-40 cycles haven't checked the CA.

Melbourne weather isnt helping, rubbish again today.

KarlJ   100 W

100 W
Posts: 212
Joined: Feb 23 2014 7:01am
Location: Melbourne

Re: E-S Stealth Electric Bike Owners

Post by KarlJ » Oct 17 2019 9:26pm

Theodore Voltaire wrote:
Apr 03 2019 11:52am
FL are you seeing something approximately like this? This is with my ca set to 65 amp. It was only about 1 amp less with the ca on 60 amp. The stock battery never saw over 67.7 amp.

The watt meter is where the real action is. With the ca set for 60 amp, watts are 4500w with the new battery. Stock it never got above 4350, maybe 4400 rarely. I always thought that's all you get. Now with the ca set for 65 amp I see 4700w continuous, but you're going to have to take my word for that, because I'm not man enough to take a good picture of 4700 watts riding with one hand.


Image
Theo
WOW I'm surprised - my CA today shows Max 78A and typically hot off the charger ~90V >6000W and rarely if ever goes below 5500W even down at 78V under load.
I haven't played with the CA settings , even if you could I dont think you can go higher than the max amps the controller will run anyway

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 17 2019 11:41pm

KarlJ wrote:
Oct 17 2019 9:26pm

Theo
WOW I'm surprised - my CA today shows Max 78A and typically hot off the charger ~90V >6000W and rarely if ever goes below 5500W even down at 78V under load.
I haven't played with the CA settings , even if you could I dont think you can go higher than the max amps the controller will run anyway
I didn't think a stock controller would go that high. I think the highest I've ever seen was about 67.8

Theodore Voltaire   10 MW

10 MW
Posts: 2208
Joined: Sep 26 2013 11:41pm
Location: Dallas

Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Oct 18 2019 8:38am

The president came to town, and Electronaut was there.


Post Reply