E-S Stealth Electric Bike Owners

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Rix
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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 01, 2017 8:07 am

scrambler wrote:Thanks,
Do you know if the pedal assist will be based on a simple cadence sensor or a torque/ speed combination?
Allow me to correct my previous statement. The P7 does have the option to be a pedlec only bike as well. Stealth includes 3 dongles with the P7. The red dongle is an off road only option and allow the use of the throttle only. The white dongle will give you US legal pedlec option and the blue dongle will provide "California" legal pedlec option. The blue and white dongles don't allow the use of the throttle. All P7 owners can pull the battery and switch between these options at their choosing. Looks like the pedlec option uses a cadence sensor attached to the BB. If you want, I can snap a picture later and post.

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Re: E-S Stealth Electric Bike Owners

Post by scrambler » Oct 01, 2017 12:08 pm

Thanks for the clarification Rix, appreciate it.

If it is Cadence sensor only it is a pity. I also don't understand why they would deactivate the throttle for the California Pedelec, Class3 is perfectly legal with both pedal assist and throttle, you just need to limit the max speed of the throttle.

I guess the pedal assist on this bike is more and after thought than a main design intention.

Cheers

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 01, 2017 1:17 pm

scrambler wrote:Thanks for the clarification Rix, appreciate it.

If it is Cadence sensor only it is a pity. I also don't understand why they would deactivate the throttle for the California Pedelec, Class3 is perfectly legal with both pedal assist and throttle, you just need to limit the max speed of the throttle.

I guess the pedal assist on this bike is more and after thought than a main design intention.

Cheers
Well, you could run the red dongle and turn the watts down to 750 and limit speed to 20MPh and be in total compliance. Also on the DC1, there is the ability to toggle between Competition mode and economy mode which feels like its less than 750watts and it cuts out at 17-18MPH. Point is, the end users has several ways to achieve total street legal compliance. I personally like having a throttle to twist.

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 02, 2017 5:14 am

Dam!
Just bought 200+ Sanyo 18650GA to build a monster pack for my Fighter!
This pack is gonna be 2.5Kwh, with probably about 2.4Kwh real world usable. I am gonna take my time making it though, so it's not likely to be ready till early next year at this stage.
Allex was gonna make this pack for me last year, but that fell through when shipping these things to Australia became next to impossible. However he was kind enough to show how the layout will work to make 14S14P fit for the best possible energy density. It is going to be about 120mm wide, 110mm tall, and roughly 340mm long.
Image

Cheers
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Re: E-S Stealth Electric Bike Owners

Post by whitebomber » Oct 02, 2017 5:59 am

Hey guys

Just went for a ride after a 3 week layoff and the B-52 wouldn't go beyond 65 ks flat out (usually 80ish) Bikes only 18 months old with less than average use. Could a 3 week break cause this or is it just a coincidence. Other than top speed performance is normal.

Any thoughts would be appreciated.

Cheers
Steve

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Rix
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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 02, 2017 9:57 pm

whitebomber wrote:Hey guys

Just went for a ride after a 3 week layoff and the B-52 wouldn't go beyond 65 ks flat out (usually 80ish) Bikes only 18 months old with less than average use. Could a 3 week break cause this or is it just a coincidence. Other than top speed performance is normal.

Any thoughts would be appreciated.

Cheers
Steve

Was it cold out? under load, how much was your volt sag compared to normal? Sometimes when batteries set for a little they can taper off on performance, however, it usually comes back after a charge cycle or two. My Bomber would lose about 8MPH between summer and winter, I noticed this with my Alpha and the 18650 pack I ran in it as well.

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 02, 2017 9:59 pm

Cowardlyduck wrote:Dam!
Just bought 200+ Sanyo 18650GA to build a monster pack for my Fighter!
This pack is gonna be 2.5Kwh, with probably about 2.4Kwh real world usable. I am gonna take my time making it though, so it's not likely to be ready till early next year at this stage.
Allex was gonna make this pack for me last year, but that fell through when shipping these things to Australia became next to impossible. However he was kind enough to show how the layout will work to make 14S14P fit for the best possible energy density. It is going to be about 120mm wide, 110mm tall, and roughly 340mm long.
th_Fighter.jpg[/img]

Cheers
That will be a long range pack for sure. Do you have a battery spot welder? How are you wiring it up? Are you going to run a BMS?

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 02, 2017 10:18 pm

Rix wrote:That will be a long range pack for sure. Do you have a battery spot welder? How are you wiring it up? Are you going to run a BMS?
Yeah, long range and about the same weight as stock also. :mrgreen:
I don't have a spot welder myself, but there's a number of fellow ES members around these parts who are very kind and have/will lend me their JP spot welder.
I'm not a fan of Battery Murdering Systems. :P I have a number of little 6S balance boards I'm playing around with atm, so I might hook those up to the balance leads, but for the most part I will just monitor cell levels periodically myself. This has worked well for me for a long time now, so I don't see a reason to change.
To get an idea of how I will build it, watch my video on the build of the 18650 pack I recently made for my recumbent:


My only concern for the Fighter pack is if the realised size exceeds the anticipated size. That's why I plan on taking my time, and making sure it is as tight and compact as possible, while remaining safe, well padded and rigid.

Cheers
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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 03, 2017 2:00 pm

I'm not a fan of Battery Murdering Systems
I learned from slow bulkcharging the beta that the cells are really close when the hvc trips. I have been told by an unpronounceable source in China that 18650 cells don't need a BMS and can handle bulk charging only. If I did this, I sure as hell wouldn't set the charge HVC to 4.2 volts per cell. All in all, I think some type of cell monitoring is a must. As for your battery build, If 14S doesn't fit, 13S will.

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Oct 03, 2017 6:45 pm

Rix wrote:
I'm not a fan of Battery Murdering Systems
I learned from slow bulkcharging the beta that the cells are really close when the hvc trips. I have been told by an unpronounceable source in China that 18650 cells don't need a BMS and can handle bulk charging only. If I did this, I sure as hell wouldn't set the charge HVC to 4.2 volts per cell. All in all, I think some type of cell monitoring is a must. As for your battery build, If 14S doesn't fit, 13S will.
Yeah, I bulk charge and never set the HVC to 4.2V per cell. At most I set it to 4.17V per cell and if I see any cells drifting more than 3mv (meaning some would be at 4.2V after a full charge) I drop the per cell voltage of the bulk charger down a bit. I also check balance roughly every 5-10 cycles, and do a balance charge at least every 15-20 cycles. So far this has served me well for over 5 years, 10's of thousands of km's, and 5-6 different battery packs and chemistries.
I've had 3 batteries with BMS's. One of them was the original stock Stealth pack which had to be repaired under warranty 4 times because the BMS kept tripping on a low cell group. One of them was from a crappy E-bike from 2010. The BMS had drained than pack down to <1V per cell. The 3rd is in a relatively new 2016 Focus E-Bike I bought with a 'dead' battery. The only 'dead' part of it was the BMS circuitry which I managed to bypass and revive the battery using a different charger. The manufacturer wanted to charge me thousands for an entirely new battery as they refused to send me a replacement BMS. https://endless-sphere.com/forums/viewt ... 4#p1249332
I've also had to repair/replace a few BMS's for others who have had them die for various reasons. I would say at least 50% of the BMS failures I have seen have been the BMS itself, not the cells it's supposed to be protecting.
All this is why I hate BMS, and personally don't like using them. All that being said, for noobs I think they are great and I can understand why manufacturers continue to install/use them on their battery packs.

Cheers
High Power LiPo wiring harnesses - 4P - XT90, HXT4mm, 5.5mm. 200Amp+ capable. Global shipping.

Modified Stealth Fighter - Force air cooled Leaf motor @ 6KW, Heat-sinked Adaptto Mini-E. Battery = 49AH, 14S (51.1V) Sanyo 18650GA - 2.5Kwhr = 200km range!
Cowardlyducks - Stealth Fighter Videos

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The stuff I make and modify.

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 04, 2017 7:57 pm

I would say at least 50% of the BMS failures I have seen have been the BMS itself, not the cells it's supposed to be protecting.
All this is why I hate BMS, and personally don't like using them. All that being said, for noobs I think they are great and I can understand why manufacturers continue to install/use them on their battery packs.
Guess I have been lucky with BMS. Stealth Bomber, Fighter, now P7, and the Adaptto BMS have never given me any problems. That said, I know several people that have same out look on BMS as you do, because of the failures they have seen/experienced.

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Re: E-S Stealth Electric Bike Owners

Post by 1abv » Oct 15, 2017 8:31 pm

Image

Image

Fun w dust…….

Image

I'm sure there is a trail there…….

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 16, 2017 11:05 am

BEWARE THE NIGHT RIDER!!!! Awedsome ABV!

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Re: E-S Stealth Electric Bike Owners

Post by deemos » Oct 16, 2017 10:33 pm

Hello Everyone

Just got my b52 bomber and i LOVE IT

My question is, Where do you put your bikes? In the house,Garage? Wifey does not want me to keep it in the house :? I Live in dubai so it is kinda hot outside.

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 16, 2017 11:12 pm

deemos wrote:Hello Everyone

Just got my b52 bomber and i LOVE IT

My question is, Where do you put your bikes? In the house,Garage? Wifey does not want me to keep it in the house :? I Live in dubai so it is kinda hot outside.

Welcome to the club Deemos. I keep my bikes in the garage, except during the coldest months here, which is December, January, and February, I keep them in my house do the freezing temps. I have been to Dubai, you don't have to worry about the winter temps there so the garage will be fine. I know you guys get up to 120+F in the summer, keep the bike in the shade and you will be fine.

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Re: E-S Stealth Electric Bike Owners

Post by deemos » Oct 17, 2017 12:05 am

Ok so few things i wanted to ask.


I had to limit the speed to 25km lol...This thing is so fast that i get kinda scared but after riding it yesterday I want to get more speed, this bike is really insane and its very comfortable as well. I am only using it on streets till i get more exp with the bike and then take it offroad. wtf should i do? Is the bike stable at high speeds?

Should i upgrade the fork and suspension? Fox4 was suggested as the fork. Any other noteworthy upgrades that can be done?


Thanks for helping in advance.

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 17, 2017 9:58 am

deemos wrote:Ok so few things i wanted to ask.


I had to limit the speed to 25km lol...This thing is so fast that i get kinda scared but after riding it yesterday I want to get more speed, this bike is really insane and its very comfortable as well. I am only using it on streets till i get more exp with the bike and then take it offroad. wtf should i do? Is the bike stable at high speeds?

Should i upgrade the fork and suspension? Fox4 was suggested as the fork. Any other noteworthy upgrades that can be done?


Thanks for helping in advance.
The DNM USD8 fork that comes on the Stealth Ebikes now is a great fork. Its a little heavier than the Fox 4, but we are riding ebikes with big hub motors and battery so grams counting is not a major benefit. The best thing to do is set up the bike for the rider's weight. The shock and fork can be adjusted for a 20-25 pound weight difference. What I mean is, the new bikes I have test ridden are set up for some one about 190-200 pounds. Clicks and adjustments can be made for the bike to work for a 180 pound person and up to a 210-215 pound rider. If the rider's body weight is outside of the parameters, the suspension will still work, but it won't be as optimal. This is not an issue you should be concerned with right now, but as your skillz 8) improve, you ill benefit from having the suspension set up for your rider weight.

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Re: E-S Stealth Electric Bike Owners

Post by deemos » Oct 17, 2017 11:07 am

Amazing thank you. Could you instruct me how to do that?

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Re: E-S Stealth Electric Bike Owners

Post by deemos » Oct 17, 2017 11:38 am

Isn't Air suspension better?

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 17, 2017 7:45 pm

deemos wrote:Amazing thank you. Could you instruct me how to do that?
Yes, I will need to take some pictures though for illustration purposes.

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 17, 2017 7:46 pm

deemos wrote:Isn't Air suspension better?
Lighter, not better. The advantage of air suspension is not having to figure out spring weights, just add more PSI

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Re: E-S Stealth Electric Bike Owners

Post by st35326 » Oct 17, 2017 10:09 pm

"Thats it, I'm going offfff the grid!"
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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 17, 2017 11:02 pm

st35326 wrote:"Thats it, I'm going offfff the grid!"

Oh Yah!

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Oct 18, 2017 2:54 pm

P7 in the field. I just finished up lacing a 26MTB wheel to the motor to pick up a little mechanical advantage over the 27.5. It works great. At first, I thought the P7 may be my new favorite Stealth bike because It was new to me. Not the case though. Its my favorite Stealth Bike. It wont touch the Bomber and Fighter in terms of performance, but it beats them in the handling department due to being alot lighter. What I don't understand is, it also works better than my Beta. My beta is a bit faster acceleration wise, however, it doesn't handle quite as good as the p7 either. The suntour fork is just plain awesome. I ran alot of forks in my day, I put this at the top of both single and dual crown forks in terms of stock performance. The DNM rear airshock works just as good as the Rockshox air shock I have on the Beta. In summary, Stealth nailed it with the P7.
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Re: E-S Stealth Electric Bike Owners

Post by Allex » Oct 27, 2017 7:48 am

Theodore Voltaire wrote:I now have over 7200 miles on my Bomber. The only failure it's ever suffered was a right side swing arm bearing that I replaced at about 3000 miles. That makes this the most amazingly dependable bike I've ever owned by far.

Being dependable is nice, but that's not the essence of why I love this bike so much. My 1974 Norton Commando, that I bought brand new, was the least dependable bike I've ever owned. I couldn't even ride it twice without making repairs to it, but it's always been one of my all time favorite bikes I've owned.

Factory's spend millions of dollars trying to make a great bike, and usually fail . Harley has tried, and tried to make a bike that's not a big twin, or Sportster, and so far they've failed miserably every time. Does anyone even know they're making a midsized V twin smaller then a Sportster? I've yet to even see one single one on the road.

The guy that invented Bombers was either a genius, lucky, or both, but some how Bombers are greatness. It's hard to describe why this bike is so good, or even what it takes to be a great bike, but this bike has it.

https://www.wired.com/2014/06/harley-davidson-livewire/
Think you will like it. I want it...

Harley-Davidson's First Electric Motorcycle Surprisingly Doesn't Suck
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