E-S Stealth Electric Bike Owners

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bigbore   10 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Mar 06 2020 12:31pm

1abv wrote:
Feb 12 2020 10:32pm
Screen Shot 2020-02-12 at 7.25.57 PM.png
If your spur gear is loose there is are 2 allen bolts on the top and bottom that sandwich the shaft in place, Check the side plates to see if there is any wear that may make the shaft loose (not top to bottom but left to right)...
This is just an update for the Vboxx problem that I have.
I lost the 1st,2nd and 4th gears and looking inside the unit I found out that the culprit is the output shaft freewheel that do not engage anymore and by looking at the chart in the manual I noticed that the freewheel works only in the gears I lost.
I also noticed too much play of the sprocket connection part inside the ball bearing so I will need a new one of this too.
While I'm rebuilding my Vboxx I will change both sides gaskets also.
I sent an e-mail to Stealth bike asking for the parts I need, and I will let you know if I will be able to obtain it from them.
Here is what I would like to order.
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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 06 2020 1:14pm

Bigbore, so I assume this is part of the freewheel mechanism. If you can describe how it has failed in a little more detail, I may know a way it can be repaired. Does it use a wire spring clip to activate the detents?

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bigbore   10 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Mar 06 2020 1:51pm

Theodore Voltaire wrote:
Mar 06 2020 1:14pm
Bigbore, so I assume this is part of the freewheel mechanism. If you can describe how it has failed in a little more detail, I may know a way it can be repaired. Does it use a wire spring clip to activate the detents?

Image
Yes it uses a wire spring clip to activate the detents but sounds like it doesn't work anymore, the detents want to stay close to the inner circular piece. The other part with the gear is a little damaged too; the teeth are slightly worn.

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 06 2020 2:34pm

bigbore wrote:
Mar 06 2020 1:51pm

Yes it uses a wire spring clip to activate the detents but sounds like it doesn't work anymore, the detents want to stay close to the inner circular piece. The other part with the gear is a little damaged too; the teeth are slightly worn.
I thought it looked familiar. I was having a problem with freewheel failure of DNP Epoch freewheels on my Fatty. They use a detent mechanism that looks similar to this VBoxx part. What kept happening is the wire spring clip would break prematurely after only a few months of operation. After going through 3 freewheels I got this idea for a repair. I substituted 2 rubber bands for the spring clip. 1 rubber band is just a back up. Before assembly I filled the mechanism with synthetic grease. It's been working very well for about 6 months now and is quieter than stock. Now that the weather is warming up I'll be riding more. I'll let you know if it fails any time soon.

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bigbore   10 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Mar 09 2020 2:41pm

Hey TV you're my hero, I didn't think about fixing the inner part with the 3 teeth.
Here is what I've done.
With a steel spring wire of 1mm diameter I made a similar circular spring like the original one.
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Then while looking close to the other shaft (the input shaft) I found out that the freewheel on that shaft was working but only with a tooth engaging so disassembling it I found out that the circular spring is broken on that part too.
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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 09 2020 5:25pm

Fantastico Grande Alesaggio!! Probably will be better than OEM.

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 09 2020 9:14pm

Yeah that looks great Bigbore. Considering it's probably a common type of failure, it's good to know it's repairable, especially since replacement parts are hard to come by.

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CJonaBttlrckt   10 W

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Re: E-S Stealth Electric Bike Owners

Post by CJonaBttlrckt » Mar 11 2020 5:13am

KarlJ wrote:
Mar 05 2020 7:17pm
I really only want about fifty cells, as I was hoping to get another year or two out of my relatively recently purchased battery, with a bit of cell replacement.
There seems to be a few parallel packs that aren't keeping up.
I'm not confident the BMS isn't the cause.

Cheers,
Clinton
[/quote]

Disconnect the BMS and add a 80A MCB, monitor packs manually for a few rides. If you want to fix an existing assembled pack it can get tricky. try and identify what you have so at least you can replace with same cells.
18650's are very reliable, in fact CD is so confident he doesn't run a BMS at all AND rarely does he need to balance them.

Personally I have made DIY powerwalls etc and dud cells are typically flat and have internal damage/ whatever elsea that causes them to heat significantly during charging and they die quickly afterwards. AS for new cells it is VERY rare to have any problems. so rare in fact TESLA use ~10,000 in a P90D, whilst they have cell level fuses in real life I dont think anyone has ever seen one popped for any reason.
[/quote]

Hi and thanks Karl,
I have three packs ready to swap out and will probably bypass the bms and try monitoring and balancing manually, for a while at least.
I've manually balanced previously and found after only a couple of cycles, the same packs are down again and if left for a while I find these same packs down, usually by more and also other packs also down.
Of note, I've used the cells I already replaced to build a makita battery and it's working fine...hence I suspect the bms is the problem.
If it's not the problem, it certainly doesn't seem to be helping given the low voltage of some packs, which were down by +0.5v at last check.
Thanks again,
Clinton

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bigbore   10 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Mar 12 2020 2:32pm

Just another update regarding my Vboxx. I have no reply yet from AU at tech@stealthelectricbikes.com
My Bomber now has 20.000Km and some parts must be replaced as I wrote before. The piece that connect the sprocket to the output shaft has too much play in the bearing and should be replaced. This is with a brand new ball bearing:
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So I made the 3D model of that piece and will ask for a quotation at a toolshop to build that piece on a CNC machine.
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If anybody will need that piece I will let you know how much would it cost, I think I will made it out of hardened stainless steel.

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 13 2020 1:55pm

Excellent work as always Grande. My Vboxx has around 16000 miles or so now. It has always had play on the sprocket counter shaft since day 1. I wonder if a little play is by design?

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bigbore   10 kW

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Re: E-S Stealth Electric Bike Owners

Post by bigbore » Mar 13 2020 2:13pm

Rix wrote:
Mar 13 2020 1:55pm
Excellent work as always Grande. My Vboxx has around 16000 miles or so now. It has always had play on the sprocket counter shaft since day 1. I wonder if a little play is by design?

I don't think so.
I think they made the Vboxx with large mechanical tolerances on the bearings. All the bearings I substituted needed some Loctite 603 because of too much play (they were mounted with some coaxial locking compound).
Today I decided to fix the piece by building a 1mm thick bush to restore the right clearance on the bearing. I started to build a fixture to work it on the lathe. So maybe I will be back on saddle sooner than expected :mrgreen:

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 13 2020 7:32pm

bigbore wrote:
Mar 13 2020 2:13pm
Rix wrote:
Mar 13 2020 1:55pm
Excellent work as always Grande. My Vboxx has around 16000 miles or so now. It has always had play on the sprocket counter shaft since day 1. I wonder if a little play is by design?

I don't think so.
I think they made the Vboxx with large mechanical tolerances on the bearings. All the bearings I substituted needed some Loctite 603 because of too much play (they were mounted with some coaxial locking compound).
Today I decided to fix the piece by building a 1mm thick bush to restore the right clearance on the bearing. I started to build a fixture to work it on the lathe. So maybe I will be back on saddle sooner than expected :mrgreen:
Interesting. I may have to send you my Vboxx and have you give it the Big Bore treatment. Paid labor and parts of course. :bigthumb:

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 14 2020 10:44am

I'm willing to trade 2 rolls of toilet paper for a new 35ah battery pack. Who wants it?

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Mar 14 2020 10:49pm

It's a sad day when my Fighter has to look like this:
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But I'm glad I've been able to sell it without even having to advertise. Seems these bikes are still in high demand. :)

I'll have to put together a best of video at some point.

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

For Sale:
Custom made 18650/21700 battery packs - Australia only
High Power LiPo wiring harnesses - 4P - XT90, HXT4mm, 5.5mm. 200Amp+ capable. Global shipping.

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 15 2020 11:23am

How many rolls did you get for it cd?

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Re: E-S Stealth Electric Bike Owners

Post by Cowardlyduck » Mar 16 2020 2:34am

Theodore Voltaire wrote:
Mar 15 2020 11:23am
How many rolls did you get for it cd?
Over 10k 8)

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

For Sale:
Custom made 18650/21700 battery packs - Australia only
High Power LiPo wiring harnesses - 4P - XT90, HXT4mm, 5.5mm. 200Amp+ capable. Global shipping.

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amberwolf   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by amberwolf » Mar 16 2020 11:59pm

Cowardlyduck wrote:
Mar 16 2020 2:34am
Theodore Voltaire wrote:
Mar 15 2020 11:23am
How many rolls did you get for it cd?
Over 10k 8)
at 50 bucks a roll that's not too bad. :P

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 17 2020 12:47pm

Theodore Voltaire wrote:
Mar 14 2020 10:44am
I'm willing to trade 2 rolls of toilet paper for a new 35ah battery pack. Who wants it?
:lol: :lol: :lol:

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 17 2020 2:24pm

Rix wrote:
Mar 17 2020 12:47pm
Theodore Voltaire wrote:
Mar 14 2020 10:44am
I'm willing to trade 2 rolls of toilet paper for a new 35ah battery pack. Who wants it?
:lol: :lol: :lol:
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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 20 2020 1:11pm

This is what it has come down for me. The good news is, it will last a while. On average, I use 3 per crapper evolution. So that comes out to about 170 trips covered at the crapper.
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Re: E-S Stealth Electric Bike Owners

Post by john61ct » Mar 20 2020 3:46pm

talk about derails

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Re: E-S Stealth Electric Bike Owners

Post by Theodore Voltaire » Mar 27 2020 8:26pm

Does anybody know what phase current means in context to what these fancy controllers for Sur Ron's have. They talk about shifting the phase current in the rpm band which changes power output and moves the peak higher or lower in the rpm's. Apprently the controller gives you the ability to do this. I never really heard of it before.

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Rix   100 GW

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Re: E-S Stealth Electric Bike Owners

Post by Rix » Mar 28 2020 10:32am

Theodore Voltaire wrote:
Mar 27 2020 8:26pm
Does anybody know what phase current means in context to what these fancy controllers for Sur Ron's have. They talk about shifting the phase current in the rpm band which changes power output and moves the peak higher or lower in the rpm's. Apprently the controller gives you the ability to do this. I never really heard of it before.
Its controller programming. Based on programming, power delivery can be altered at various stages in the volt range. I don't understand how the programming works exactly, just that it can be done, and the delivery of phase current can be manipulated.

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Re: E-S Stealth Electric Bike Owners

Post by 1abv » Apr 02 2020 10:21pm

The Bitch is back....took a minute but its up and running again....
Just got a new battery pack for it.....35AH unit.. as of new I have only done a few short rides but happy to have the unit up and running... On thing I did notice was that when the battery is close to fully charged on the 1st ride regen does not work... odd but Im sure there is a setting for it..

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Re: E-S Stealth Electric Bike Owners

Post by john61ct » Apr 02 2020 10:26pm

Regen requires a certain amount of Ah discharged, or has nowhere to put it

you do **not** want your pack getting overcharged!

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