E-S Stealth Electric Bike Owners

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Mattof37   1 mW

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 01 2018 11:40am

Thanks for the reply and info rix, seen a lot of your videos on YouTube, tried to get as much info on the bikes as possible as there are no stockists of these bikes in the uk, so i've purchased the F37 without even riding one. Hope it goes as well as it seems in your vids.πŸ€”

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 01 2018 12:40pm

Mattof37 wrote: ↑
Feb 01 2018 11:40am
Thanks for the reply and info rix, seen a lot of your videos on YouTube, tried to get as much info on the bikes as possible as there are no stockists of these bikes in the uk, so i've purchased the F37 without even riding one. Hope it goes as well as it seems in your vids.πŸ€”
The new F37s are quite a bit more refined then the one in my videos. Ironically, my F37 came with a RST R-One fork. It was awesome! I know RSTs have a bad rep, as the RST on my Bomber sucked bad. But the RST on my Fighter was awesome right up until I blew a seal and couldn't get any replacement parts for it. Thats when I went to the MRP Grove 180 which was one of the best forks I have ever ran box stock. The DNM fork your Fighter will have is a really nice and plush fork. Smooth through the stroke, no stiction, and very tough. As far as your battery goes, there should be some kind of serial number on the heat shrink wrap, you can contact Luke at Stealthtech support and he will confirm the battery's status. I am certain its the proper battery as I have never heard of a case where Stealth sent out the wrong-incorrect battery for one of their bikes. When you get your bike in and the battery installed, power up the DC1 and toggle to the second screen through the menu button. Leave it there while you charge your battery. You will be able to watch your volts during charging. The high volt cutoff should trip between 58.7 to 58.8 volts. For what its worth, I never got to test ride any of my Stealth bikes, Bomber, Fighter, P7 before purchasing. No regrets. If you like Mountain biking and riding motorcycles offroad, you will love your Fighter. Make and post a vid and some pics when you get yours in. Look forward to hearing/seeing them.

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 01 2018 1:41pm

Thanks for the information, I've just tested the battery and it's showing 57.8 volts on the voltage tester so all Good, someone in Hong Kong must of labed it wrong.
Hopefully my bike will arrive on Tuesday πŸ‘πŸ‘.
The bike looks awesome bit of kit in stock form, the only thing I was concerned about was the power on acceleration and hills etc, from what I have seen on your videos it looks like it performs well just alot wetter and muddy in the uk compared to your area.
I used to ride motocross but changed to mountain bikes hopefully this is something inbetween.

Thanks Matt

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 02 2018 3:32am

Mattof37 wrote: ↑
Feb 01 2018 1:41pm
Thanks for the information, I've just tested the battery and it's showing 57.8 volts on the voltage tester so all Good, someone in Hong Kong must of labed it wrong.
Hopefully my bike will arrive on Tuesday πŸ‘πŸ‘.
The bike looks awesome bit of kit in stock form, the only thing I was concerned about was the power on acceleration and hills etc, from what I have seen on your videos it looks like it performs well just alot wetter and muddy in the uk compared to your area.
I used to ride motocross but changed to mountain bikes hopefully this is something inbetween.

Thanks Matt
I wonder if the battery labeling was for "shipping purposes"? Don't worry about power climbing hills, with pedal assist in low gear, you will run out of traction in the dirt before you stall it. Not sure if you seen this vid, but dad and I climbed about 1100 feet in about 1.5 miles.

https://www.youtube.com/watch?v=JvQu6Kwpu7A&t=26s

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 02 2018 5:31am

Yes I've seen this video some great places you got over there, your videos are probably the main reason I decided to get the fighter as you show what the bike is capable of especially around salt lake I think it was it looked fast so you must of been moving some as videos always looks slower, most videos are about the bomber not many on the fighter .
So thanks for the videos πŸ‘ŒπŸ‘πŸ‘

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Cowardlyduck   10 MW

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Feb 02 2018 6:35am

Mattof37 wrote: ↑
Feb 02 2018 5:31am
most videos are about the bomber not many on the fighter .
I got a few on my Fighter:
https://endless-sphere.com/forums/viewt ... 2#p1352522

Not sure if you missed it earlier up this page, but this was my most recent ride with my Fighter:


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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 02 2018 10:03am

Mattof37 wrote: ↑
Feb 02 2018 5:31am
Yes I've seen this video some great places you got over there, your videos are probably the main reason I decided to get the fighter as you show what the bike is capable of especially around salt lake I think it was it looked fast so you must of been moving some as videos always looks slower, most videos are about the bomber not many on the fighter .
So thanks for the videos πŸ‘ŒπŸ‘πŸ‘
Well thank you for the compliment.

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 07 2018 1:18pm

Hi,

My Stealth fighter arrived yesterday 😁 took it out for my first ride today felt good but seemed to be lacking power on take off almost sluggish up to around 10mph then it seems to pick up pace quickly, is this how they are or do they just take a few cycles of charges to get the best out of them?
I've got it in competition mode on fast start and maximum watts 3700w battery shows 58v.
Also running it free wheel on a the stand it will show 45mph should this be more as there is no resistance?

Any ideas.

Thanks Matt

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 07 2018 11:11pm

Mattof37 wrote: ↑
Feb 07 2018 1:18pm
Hi,

My Stealth fighter arrived yesterday 😁 took it out for my first ride today felt good but seemed to be lacking power on take off almost sluggish up to around 10mph then it seems to pick up pace quickly, is this how they are or do they just take a few cycles of charges to get the best out of them?
I've got it in competition mode on fast start and maximum watts 3700w battery shows 58v.
Also running it free wheel on a the stand it will show 45mph should this be more as there is no resistance?

Any ideas.

Thanks Matt
Under the DC1 adjust limits, there should be a option to select yes or no for "soft start" select no. That should wake it up a little.

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 08 2018 7:07am

Thanks for the response. Took it for a good ride today everything was great until I was on my way home approximately 30% power remaining so I used the regain button which made a loud thud in the hub now the hub won't spin , if I turn it off the on again it gets to spin thus then Nothing?? Greatful if anyone got any ideas on this ?

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 08 2018 10:14pm

Mattof37 wrote: ↑
Feb 08 2018 7:07am
Thanks for the response. Took it for a good ride today everything was great until I was on my way home approximately 30% power remaining so I used the regain button which made a loud thud in the hub now the hub won't spin , if I turn it off the on again it gets to spin thus then Nothing?? Greatful if anyone got any ideas on this ?
I have no idea.

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Re: E-S Stealth Electric Bike Owners

Post by Emmett » Feb 10 2018 9:33am

Mattof37 wrote: ↑
Feb 08 2018 7:07am
Thanks for the response. Took it for a good ride today everything was great until I was on my way home approximately 30% power remaining so I used the regain button which made a loud thud in the hub now the hub won't spin , if I turn it off the on again it gets to spin thus then Nothing?? Greatful if anyone got any ideas on this ?
Are you saying your rear hub locked up completely and still is mechanically jammed? Or do you mean there is now no power/drive from it?

In any case you should start to pull it apart and get to the bottom of it.

Regen causes reverse torque on the axle, and reverse force on the hub ring magnets. To lock the hub, the magnets might have come loose and jammed against the stator. Motor might be ruined. If it's locked up, then go inside and check it. You need an 8" puller tool. If the axle reverse spun too far in the swingarm then you might have broken some of the wires going through the axle slot. Hub motor testers are very cheap on ebay.

I think regen is a problematic hazard. Reverse torque on the axle causes the axle to come lose unless you have some serious axle clamps. The regen is on/off so you lose control of the rear wheel/end when riding offroad lose stuff. I also find the extra wire is a hazard to catch on tree branches (for me). To top it off, the amount of energy you can regen is not worth it. If you want more range then adjust your riding habits. I never want my axle trying to rotate in the reverse direction so I have one of CD's beaut clamps. My Fighter (with many mods) has been super reliable.

PS. Rix, thanks for the advice on the Shinko SR241 19" rear trials tire. I've used it heaps over lots of sandstone and crap with 6500W peak and it's still looking good. I've killed two Razorback fronts since I put the SR241 on. It's got Tubliss in it. Never had a flat yet using around 15PSI. It also sounds awesome when it breaks traction over rocks under power. It grabs nicely in sand and if I ride gently it's super gentle on the trails. Love it!

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 10 2018 2:56pm

Rix, thanks for the advice on the Shinko SR241 19" rear trials tire. I've used it heaps over lots of sandstone and crap with 6500W peak and it's still looking good. I've killed two Razorback fronts since I put the SR241 on. It's got Tubliss in it. Never had a flat yet using around 15PSI. It also sounds awesome when it breaks traction over rocks under power. It grabs nicely in sand and if I ride gently it's super gentle on the trails. Love it!
Glad you like it. The SR241 is a great tire, I keep trying other tires and always go back to them. It doesn't matter what size, 17-2.75, 17-3.00, 18-2.75, 18-3.00, and the 19-2.75, they are all the best tires I have ran for combo road and dirt performance on all my ebikes, except the P7, I am staying with MTB wheels and tires on it.
the amount of energy you can regen is not worth it.
Regen is neat for prolonging brake pad life, but thats it. I read a story about a guy that used regen from the top of pikes peak all the way to the bottom, 19 miles I think it was, and he only put 100wh back into the battery, Bottom line is, electric motors don't make good generators, and conversely, alternators don't make good electric motors.

Mattof37   1 mW

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 12 2018 9:26am

Thanks for your help guys,

Finally got to solve the problem, after contacting stealth and showing them the bikes diagnostic data they said it was a blown sensor in the hub and I would have to send it off to get repaired. As I started to remove the back wheel I noticed in the large metal connector under the bike that the sleeve had come off one of the small wires inside the connector so I cleaned it out repaired the sleeve and we are now back in action. A few modifications made waterproof tape around the bottom cable's and silicone seal to a few areas hopefully fully water tight now 🀞
Frustrating first few days i.e. pushing it 10 miles home , but had a right good ride approximately 30miles yesterday on some good local track's love the way the fighter handles and attacks the jumps gives plenty confidence.
Will try upload some pics and videos when I learn how to upload them🀣
Thanks for the information guys.

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Re: E-S Stealth Electric Bike Owners

Post by Emmett » Feb 12 2018 9:54am

Mattof37 wrote: ↑
Feb 12 2018 9:26am
As I started to remove the back wheel I noticed in the large metal connector under the bike that the sleeve had come off one of the small wires inside the connector so I cleaned it out repaired the sleeve and we are now back in action.
Great you found the problem! When I first started riding my Fighter a few years back I found that the hall sensors wire plug connector under the frame was a problem point. In fact having any motor phase or halls wires running under the frame is no good because sticks and stones frequently smash into that place a lot when riding off road bush trails. So I replaced the round DIN plug with a tough waterpoof plug (thanks Allex) and I route all my wires above the bottom bracket and along the top of the swingarm. Less failures points and I've never had a problem with controller to hub wires since.

If you seal your hub motor and put oil in it, and use cooling fins around your hub then motor overheating is not problem with high power used a lot, so you can remove the temp sensor wires completely. As a bonus this allows you to use thicker high amp phase wires.

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 13 2018 6:34am

Yes I thought that myself cables under the bike will be a problem area , that's a good solution to re-route on top of the swing arm probably be my next job.
As to the regain button I can see your point its just not worth it .
With regards to oil in the hub in the stealth manual is says spray crc 5-56 into the hub but there is no hole I can find to do this????
Sorry for all the questions if you haven't already gathered I'm a new be to electric bikes.

Thanks Matt

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Re: E-S Stealth Electric Bike Owners

Post by Emmett » Feb 13 2018 7:10am

Mattof37 wrote: ↑
Feb 13 2018 6:34am
With regards to oil in the hub in the stealth manual is says spray crc 5-56 into the hub but there is no hole I can find to do this????
Sorry for all the questions if you haven't already gathered I'm a new be to electric bikes.
Questions are fine. Shoot away. There are so many about these bikes.

I sealed my hub motor so I could put 90ml of castor oil in it. Search my old posts since I wrote about it in the past - I think. If you ride rough offroad trails then it's tricky to firmly seal the side covers on. Also you will always get a small seepage of oil getting out between the axle and bearing bore. Just a little. The purpose of the oil is to transfer the heat very fast from the stator to the outer shell. From the shell the heat dissipates out the bolt on radial fin heat sink. I forget the heat-sink brand sorry, but they work great. I prefer castor oil because it is effectively odourless and also easy to wipe away. In comparison ATF stinks and is difficult to clean off anything. It is so good when you can pump a lot of power through a smaller lighter motor and never ever care about overheating. So great when you can ride in mud and wash the bike and that's ok. I've also sealed my controller and frame. For the controller and hub I use oil resistant silicone. For the frame side panels I use normal bathroom/glass silicone sealant. The inside of my controller is smothered in spray oil safe for electronics to reduce corrosion. I like low maintenance on my e-bike.

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 14 2018 4:20am

I take it your hub has breath holes in with regards to you saying sealing the hub beforehand? My hub does not have any breath holes in not sure if that is a good thing or not ?
Also spinning the rear wheel unloaded it Maxs out at 74kph (44mph) to be honest on videos I've seen they max out the to the speed limit 95kph unloaded, every setting is to the max output, also riding on a flat surface it struggles to hit 30mph im approximately 13 stone so not overly heavy?
Any ideas on what this could be??

Thanks Matt

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Re: E-S Stealth Electric Bike Owners

Post by Emmett » Feb 16 2018 9:13am

Mattof37 wrote: ↑
Feb 14 2018 4:20am
I take it your hub has breath holes in with regards to you saying sealing the hub beforehand? My hub does not have any breath holes in not sure if that is a good thing or not ?
Also spinning the rear wheel unloaded it Maxs out at 74kph (44mph) to be honest on videos I've seen they max out the to the speed limit 95kph unloaded, every setting is to the max output, also riding on a flat surface it struggles to hit 30mph im approximately 13 stone so not overly heavy?
Any ideas on what this could be??
Yes I added a 1mm breather hole near the chain sprocket. Only needed if you seal the hub.
For oil fill/drain I have a M5 bolt tapped into the right side cover plate, near the magnets. Fiber washer to seal it and bolt short enough so it wont touch the magnets.
74 km/h for unloaded max RPM sounds about right for a stock hut motor. The DC-1 setting won't provide speed/torque above the physical limit. It depends on the motor wind and the voltage.
If you cut the green wire then the DC-1 has no throttle governor control over the main controller. Then the DC-1 is a display only. Limiter settings will do nothing. Also you will get smoother power delivery since the feedback throttling logic is not so great. The main (black external) controller still has a programmed "smooth start" so you don't have to fear max torque at zero RPM.
Your max speed under load depends on your battery health and the amount of load. Assuming tire pressure is adequate and no throttle governing, then I'd be looking into your battery health. Check the voltage sag on the DC-1 display under load at wide open throttle. Those stock LiFePO4 type batteries (if you have one) are very safe but they're not great for energy density, and especially after some serious use or storage in bad conditions (low charge and/or hot air temps).
I'm unsure who is offering good battery solutions nowdays, but I've been using six of these in a 18S2P config (75V) with a Bomber controller and it's awesome. Low cost and stores about 1500 Ah (over 150% range of my original 2014 battery).
https://hobbyking.com/en_us/multistar-h ... -pack.html
You will also need the wiring loom from ES user CowardlyDuck.

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DunkenKBliths   100 W

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Re: E-S Stealth Electric Bike Owners

Post by DunkenKBliths » Feb 25 2018 2:24am

Hey guys...

Anyone ventured down this battery type yet ?

Headway 38120 10Ah cell
LiFePO4 Cell 3.2V 10Ah

They seem quite cheap and easy to connect together...not sure about size length wise for the B52 frame though...

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Allex   1 GW

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Re: E-S Stealth Electric Bike Owners

Post by Allex » Feb 25 2018 4:59am

Headway was also called deadways, and was popular cellchoice here for about 5 years ago. Were not reliable.
IMHO on a bike you should use something lighter. Lifepo cells are best suited for stationary purposes due to low power density.
But it was a good chem back in the days and perhaps the best 10 years ago when ebikes started to come out to the market.

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Re: E-S Stealth Electric Bike Owners

Post by DunkenKBliths » Feb 25 2018 5:40pm

Thanks...always good to hear the real story...was hoping they were more power dense...but sounds like unreliable
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bigbore   1 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Feb 27 2018 9:26am

Last Sunday was a sunny day so I took the Bomber for a nice ride on the beach and back home trough the woods.
Here they are building a new extended mouth of the river and in the background you can see the harbor of Livorno.
Image

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Re: E-S Stealth Electric Bike Owners

Post by Mattof37 » Feb 28 2018 8:08am

Hi,


That sounds like a good idea, so i would need to get a bomber control, new battery and wiring ? Does the dc1 have to be disconnected with all these changes?

1. Does anyone sell the battery back already built the correct size for the fighter.?

2. Where can I source a bomber control?


Thanks Matt

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Feb 28 2018 8:13am

bigbore wrote: ↑
Feb 27 2018 9:26am
Last Sunday was a sunny day so I took the Bomber for a nice ride on the beach and back home trough the woods.
Here they are building a new extended mouth of the river and in the background you can see the harbor of Livorno.
Image
Looks like you had a great ride :mrgreen: , got alot of snow and ice here. How about making a video of a ride around livorno?

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