E-S Stealth Electric Bike Owners

Rix said:
Allex said:
Theodore Voltaire said:
st35326 said:
Being bored at home due to the pandemic I had idea of taking the Dragy off of my car and putting it on the bike for some performance testing.
Dragy-Bike.jpg
I figured 100m (328 feet) is a decent equivalent to 1/8 or 1/4 mile testing for automobiles, so I customized my Dragy runs to capture: 0-30mph, 0-40mph and 100m times. Just for reference I am 205lbs and testing a stock Bomber will do high 4 to low 5 second 0-30 mph (depending on SOC and rider weight). The best time on the bike pictured below was achieved with with my highest controller setting tried that day of 150 battery amps and 300 phase amps, with flux weakening and boost mode turned off.Bomber.jpg

Those times seem good, but I don't understand anything else. 300 phase amps, what's that?

How many amps max did your ca show?

Every electric setup has DC amps, that is what controller sucks from the battery And then what it puts to the motor is called Phase amps. (motor has three phases, green, yellow and blue cable)
More phase amps means more power to motor and thus better acceleration. When you program a controller you always setup your DC and phase amps. if we are talking about stock surron it has 90A DC and 450 phase A.

Wow, I didn't know the Phase to DC amp ratio was north of 4:1. but that makes sense as the phase wires on the SurRon are HUGE.

That is a bunch especially considering they're only 60v. I assume that means 100a per leg? Three legs = 300a.

Between the controller and the battery there can be 90a?
 
Hi folks,
Does anyone know if I can switch or adjust a stealth charger, set at 58.8 volts to charge to 87.6v for a 72v battery; or is there a fundamental difference between the chargers, apart from the wiring at the at plug for the bike being different?
CD, this is for the recipient bike of your recent battery build.
hurricanecharger_sml.jpg
Thanks,
Clinton
 
CJonaBttlrckt said:
Hi folks,
Does anyone know if I can switch or adjust a stealth charger, set at 58.8 volts to charge to 87.6v for a 72v battery; or is there a fundamental difference between the chargers, apart from the wiring at the at plug for the bike being different?
CD, this is for the recipient bike of your recent battery build.
hurricanecharger_sml.jpg
Thanks,
Clinton
You probably won't be able to crank it up that much, but this is how you do it:
[youtube]2seQdu6Epmc[/youtube]
This was on my Stealth chargers, and several others I've bough over the years. Typically chargers will max out at 60V, 80V, or 100V depending on the caps used. You can usually see the max voltage printed on some of the caps. The pot may let you go above that voltage, but don't or it will risk blowing the caps.

Cheers
 
CJonaBttlrckt said:
Hi folks,
Does anyone know if I can switch or adjust a stealth charger, set at 58.8 volts to charge to 87.6v for a 72v battery; or is there a fundamental difference between the chargers, apart from the wiring at the at plug for the bike being different?
CD, this is for the recipient bike of your recent battery build.
hurricanecharger_sml.jpg
Thanks,
Clinton

You can only do so much with the trim pots.
 
I dood it. I had to get a little creative in order to fit the regen button on. It won't fit under the bolt like stock. I moved the button to back side of the clamp instead of the front, and used a longer bolt, and nut to hold it on. Looks almost the same as stock. Makes no difference to me though, because I never use it.

I tried to be all neat and clean by sneaking up on the line after I cut it open, but 30 minutes later I was up tp my arm pits in mineral oil again. I was able to get a good bleed on it though, better than the MTs even though the process is identical.

I'm going to put some miles on them after dinner, and then I'll evaluate how they work.

[img
XT8000-front-view.jpg
][/img]

[img
XT-Shimano-f-L.jpg
][/img]
 
Ok just got back from riding 25 miles. These brakes work ok. They have more stopping force than stock MT2s. They aren't amazing or anywhere close to that. If I had to guess I'd say MT5 are a tincy stronger. These have better feel though. In comparison I don't think these are as abrupt as MT5. They have nice firm linear pull, and because of the adjustable levers the travel is always going to be just right. They're so easy to modulate they're never going to be scary. The lever movement itself feels very precision. There's almost no wiggle, and the levers return to full open silently, even if you try to make them smack back, they still move silently, and smoothly. They have a classy, almost snooty, smooth operator look about them. In comparison MT2s have a more industrial working class look.

To summarize, I like these XT8000 Shimano's just fine. For a reasonable price of under $200 they're not only reasonably strong, but they also exude a high class taste you normally don't get in this price range.

The best thing about them is they're strong, but they're not strong enough to be scary, and the worst thing about them, they're not strong enough to be scary. :)

ps,
I forgot to mention the noise is gone. But still on occasion, usually at a slower speed, I can still make either one of them honk a little bit. I think Bombers are just really hard to make their brakes super quiet. I remember when my bike was pretty new I spent a lot of time fiddling with the brakes because of weird noises the brakes made. My sons B52 isn't too bad, but it's brakes aren't winning any awards for quietness either. Right now my brakes are quieter than I've ever been able to achieve so far.
 
Theodore Voltaire said:
I dood it. I had to get a little creative in order to fit the regen button on. It won't fit under the bolt like stock. I moved the button to back side of the clamp instead of the front, and used a longer bolt, and nut to hold it on. Looks almost the same as stock. Makes no difference to me though, because I never use it.

I tried to be all neat and clean by sneaking up on the line after I cut it open, but 30 minutes later I was up tp my arm pits in mineral oil again. I was able to get a good bleed on it though, better than the MTs even though the process is identical.

I'm going to put some miles on them after dinner, and then I'll evaluate how they work.

[img
XT8000-front-view.jpg
][/img]

[img
XT-Shimano-f-L.jpg
][/img]

Well done.

How does your bike look like it’s brand new? Wish mine was this clean.
 
RhombusB52 said:
How does your bike look like it’s brand new? Wish mine was this clean.

It definitely looks better now than new, even with 13,000 miles. Works a little better too for the kind of riding I do. My initial impression back in 2013 was, it looked more like a piece of heavy field artillery than a thing of beauty. I did love the way it moved, but I wasn't instantly in love with the looks. That actually made it more fun, because it was challenging to change the things that I wasn't wild about.

eBikes always seem to have a mess of cable, and wire clutter in front of the handle bars, and it's hard to clean that up. The direction the hoses come out of these Shimano master cylinders is 90 degrees different from the Magura's. I wasn't sure how that was going to work out, but as it turns out it does help reduce the clutter for a slightly cleaner look. Both hoses are able to take a more direct route to their destination, without having to loop so far in front of the bike.

[img
April-2020-b.jpg
][/img]


[img
cable-managment-2020-b.jpg
][/img]
 
Rix said:
Nicely done TV. Got your Bomber nicely set up for road riding . Looks great!

Thanks Rix, I feel like I have this bike perfected now. At least for me it is. Usually this is about the time were I decide to move on to a new bike, but I don't think it's going to happen this time. This bike captivates me now more than ever. Upgrading the suspension made a big difference. Good suspension allows me to utilize the better grip from wider rims. A bigger battery has a huge impact on overall riding experience too. The dreaded range anxiety just isn't much of a thing anymore. Fenders give a street bike a finished look, and I like not getting sprayed in the face with dirty street water. Finding the, just right, handle bars is a constant joy because when you're riding your bike, that's were you live. Good brakes, yeah that's nice too. It was fun making all these improvements to my bike, but these are the kind of things every rider wants to do in his own unique way.

One last accessory that deserves a lot more attention than it gets is a dropper seat post. What a sleeper that turned out to be. For an eBike it's the best thing since lithium battery's. Being able to adjust the seat height on the fly comes in real handy in the city, and I mean real handy. You can stand flat footed at lights, but easily raise it up to save your knees when you pedal. It has a kind of wow factor too, when people see you riding along in traffic, and suddenly drop down at the last second at a light. It's really cool.
 
I've heard of seat posts that help give comfort like a suspension affect for hardtails

What is the relationship between those and these "dropper" seat posts?

mutually exclusive or can be combined?

Links to examples?
 
john61ct said:
I've heard of seat posts that help give comfort like a suspension affect for hardtails

What is the relationship between those and these "dropper" seat posts?

mutually exclusive or can be combined?

Links to examples?

I wondered the same thing. They're two totally different animals. droppers don't have suspension.

[youtube]0ecT-TooWjY[/youtube]

https://www.youtube.com/watch?v=0ecT-TooWjY
 
Theodore Voltaire said:
Rix said:
Nicely done TV. Got your Bomber nicely set up for road riding . Looks great!

Thanks Rix, I feel like I have this bike perfected now. At least for me it is. Usually this is about the time were I decide to move on to a new bike, but I don't think it's going to happen this time. This bike captivates me now more than ever. Upgrading the suspension made a big difference. Good suspension allows me to utilize the better grip from wider rims. A bigger battery has a huge impact on overall riding experience too. The dreaded range anxiety just isn't much of a thing anymore. Fenders give a street bike a finished look, and I like not getting sprayed in the face with dirty street water. Finding the, just right, handle bars is a constant joy because when you're riding your bike, that's were you live. Good brakes, yeah that's nice too. It was fun making all these improvements to my bike, but these are the kind of things every rider wants to do in his own unique way.

One last accessory that deserves a lot more attention than it gets is a dropper seat post. What a sleeper that turned out to be. For an eBike it's the best thing since lithium battery's. Being able to adjust the seat height on the fly comes in real handy in the city, and I mean real handy. You can stand flat footed at lights, but easily raise it up to save your knees when you pedal. It has a kind of wow factor too, when people see you riding along in traffic, and suddenly drop down at the last second at a light. It's really cool.

The beauty and simplicity in our bikes is the hub motor drive. Easy to work on, simple and quiet. I know mid drives offer more in terms of performance and advantage, but it comes at the price of being more involved. I will never not own at least one Stealth. I got a Bomber and two P7Rs along with a FUTR Alpha and Beta, and a SurRon. Shit, i need to downsize.
 
Theodore Voltaire said:
john61ct said:
I've heard of seat posts that help give comfort like a suspension affect for hardtails

What is the relationship between those and these "dropper" seat posts?

mutually exclusive or can be combined?

Links to examples?

I wondered the same thing. They're two totally different animals. droppers don't have suspension.
Too bad, hope to see combi versions on the market soon

 
Cd, the guy that bought your bike probably doesn't know how lucky he is to get it. So perfected.
 
35ah, what a relief. I've ridden 3 times this week without charging. After today I used 25.5 ah. in 35.7 miles. When I started today it was at 20.5 ah, and when I first rode off I was impressed how good the battery felt. When I got home 5 ah later it still felt pretty darn good. I'm definitely not used to that kind of range with power, and it obviously had more to go. Just got to be happy happy about that.

If it really makes the battery pack last longer, I could really consider not charging it all the way. 90% of my rides are 20 ah or less.

If you have experience doing that, tell me, does it make that much difference in the life of the battery?
 
Cowardlyduck said:
Thanks TV!

Theodore Voltaire said:
If you have experience doing that, tell me, does it make that much difference in the life of the battery?
Yes.
I send this with every battery that I make:
Charge level cycle life.jpg

Cheers

Wow that seems like a big difference. I wasn't thinking it would be that much.
 
Theodore Voltaire said:
35ah, what a relief. I've ridden 3 times this week without charging. After today I used 25.5 ah. in 35.7 miles. When I started today it was at 20.5 ah, and when I first rode off I was impressed how good the battery felt. When I got home 5 ah later it still felt pretty darn good. I'm definitely not used to that kind of range with power, and it obviously had more to go. Just got to be happy happy about that.

If it really makes the battery pack last longer, I could really consider not charging it all the way. 90% of my rides are 20 ah or less.

If you have experience doing that, tell me, does it make that much difference in the life of the battery?

Makes a huge difference, can potentially double your battery cycle life.
 
Lots of details elided there, and the effect exaggerated, but still yes it is a significant impact.

Also average DoD has a much larger impact
 
I think I'll make an effort to take better care of this new battery. It may have to last a long time. I was reading that because of this pandemic that globalization is dead, and China isn't going to be the worlds factory any longer. It will take a number of years for local production to get going, and a lot of our resources may go into food production. Anyone that needs a new battery, this is probably a good time to get one.
 
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