eZee conversion kit

[efreak]

Thnaks a lot wile E and welcome farmer,

it would be real sweet to be able to use a slightly more powerful controller with this set up. I really like the ease of install and compact geared it is good price IMO for now before the spring bringsout competition.

regarding the batteries I am assuming they are of the older lithium poly cobalt variety I could be wrong but from what I have read they are ok if you moniter them closely charging and discharging while knowing the danger possibilities. again my guess I hope Justin is in the works for stocking some better battery solutions as they come online. you could always get a lifebatt pack a la GGoodrum .

you have to love competition.

efreak

 

[josh]

Hi efreak

Sorry not to answer you original post asking for opinions on the kit: I don't know anything definite, but it seems to be the same upgraded Torq motor as the Ezee Torq Trekking & does 22mph in 28" wheels @ 37V when delimited here in the UK: very much a pedal assist, though its said to have higher torque than the original motor (current limit now 16A vs 15A previously) & though the controller has an upper voltage cut-off, it has been used with a 33 cell 39.6V NiMH which gives a good power boost for hills by compensating for the voltage drop under load . The original Torq motor freewheels with minimal drag & usually copes up to about 10% gradient in 28" wheels, though with the hill-boost battery thats much increased, and a 26" wheel will also give better hill performance. Although its lower power due to lower peak current than the likes of the Ezee F series bikes (Forza & Forte) with a 20A limit or a Puma which appears capable of running at higher voltage & current, I like the smaller size, less conspicuous look, and in a 28" wheel with that wide disc brake its hardly visible at all . It will run reliably in a 28" wheel too at 36-40V, no gear slippage problems.

The Ezee battery is the safer lithium manganese (phylion), so much less danger than with cobalt, but there are major ongoing questions over longevity & much more info in the forum linked to by jerryt above: in brief, you may get a somewhat useful battery life if you recharge often (few or no deep discharges) and use moderate power (no steep hills or high speed). Cut-out problems may have been reduced by improved BMS. I got NiMH to be safe.

With moderate pedalling, a 36 or 37V, 9 or 10Ah battery gives around 30 miles at 15mph in flattish terrain, or 15-20 miles or so at 20mph, thats with the old Torq motor though.

Hope thats useful .

 

[Ypedal]

I received my new eZee kit tonight !

I got the front, 26", 10ah Lithium setup.

No fussing with the install, dropped right into my front RST forks ( yes. suspension forks.. but these have held up to 48v Clytes and i always wear my helmet ) .

The kit came with a Schwalabe Marathon Plus tire installed ( good idea for shipping, protects the rim nicely )

Much more quiet than i had expected, pleasently surprised.

Charger is also decent ( Hi-Power type, like my NImh chargers ) better than most i've seen so far.

Rim is nice and true ( not perfect, but good enough to go, right out of the box, rare thing !!! )

Next step : Test ride !

 

[recumbent]

I received my new eZee kit tonight ! ...I got the front, 26", 10ah Lithium setup.
Next step : Test ride !

Congrats, will this be your first geared hub motor?

I think you have the largest test portfolio of anybody on this forum, you should be awarded a metal of some sort one day

Hope the weather gets better for you, heard on the news you easterners got a blast of winter weather few days ago, good luck.

Are you plannig to try a more powerful controler & batteries after initial testings?

 

[josh]

Nice going Ypedal!

Should be fine in front sus forks I think - Torq trekking has the same setup .

Good to hear its nice & quiet too. The marathon plus tyres are an interesting touch - they are the tyre of choice here in the UK for virtual puncture-proofness with good rolling speed and requests have been made for Ezee bikes to come with them fitted as standard, so sounds like another case of the manufacturer listening to customer feedback , and more than just rim protection for shipping I'd keep it on for now.

I meant to add before, if you should ever want to increase voltage, the Ezee controllers usually have an upper voltage cut-off at around 44V, so a 33-cell 39.6V NiMH is about the limit and that gave a good boost for hills to the original Torq motor in 28" with 15A limit, but yours has more torque, 26" wheels and 16A limit, so that might not be necessary. You should still get 20mph or so with 37V though, assuming that the motor has no limiter in place, which I questioned previously.

PS The latest Ezee bikes are also reputed to have very good waterproofing of the electronics, which seems to be evident in the seal of the controller shown earlier in the thread .

I look forward to hearing more of your impressions after a test ride - have a blast but take care! 8)

 

[Ypedal]

I received my new eZee kit tonight ! ...I got the front, 26", 10ah Lithium setup.
Next step : Test ride !

Congrats, will this be your first geared hub motor?

I think you have the largest test portfolio of anybody on this forum, you should be awarded a metal of some sort one day

Hope the weather gets better for you, heard on the news you easterners got a blast of winter weather few days ago, good luck.

Are you plannig to try a more powerful controler & batteries after initial testings?

Yes, this is my first Geared motor setup, my collection is growing nicely !

single/dual-speed/4 series - X5's - Red Hornet - Kollmorgens..

SLA, Nicad, Nimh, LiMn 20ah, 10ah, , LiFe's , and so on

Weather.. wowzers.. 4 snow storms in a week, and a nice balmy - 26 celcius this morning ( without wind-chill factor )

Once i run the stock setup thru the mill, there is a very real chance it might get " hacked " lol..

I have a box of controllers on it's way to Rick K for 4110 Fet upgrades, this motor may not need/take that much but only one way to know right !

 

[fechter]

Once i run the stock setup thru the mill, there is a very real chance it might get " hacked " lol..

I have a box of controllers on it's way to Rick K for 4110 Fet upgrades, this motor may not need/take that much but only one way to know right !

That's what I would do.

How about cracking the motor open for a peek inside?

 

[Ypedal]

http://endless-sphere.com/forums/viewtopic.php?f=2&t=2470&start=0

Lowell did this a while back !! :wink:

 

[fechter]

http://endless-sphere.com/forums/viewtopic.php?f=2&t=2470&start=0

Lowell did this a while back !! :wink:

Thanks, that brain cell apparently bit the dust somewhere

It is very similar to the Puma motor.

 

[Joey]

It took me a long time to decide what my first e-bike kit was going to be but I finally settled on it. I just ordered an eZee hub kit with 10aH Li-Mn batteries from ebikes.ca. I also ordered a Crystalyte-compatible front torque arm from poweridestore.com. I don't know if the torque arm will fit the eZee front hub motor but I'll find out when everything arrives. I'm going to mount the kit on an old steel-framed Nishiki Pueblo 18-speed "mountain" bike. I hope to be e-riding this weekend. I'll post before and after pics under the E-Bike Photos and Video topic after my initial e-rider grin subsides.

My plan is to use the Li-Mn kit batteries until they go squirrely, but in the meantime, purchase a 12s1p LifeBatt pack from Gary at tppacks.com as soon as it becomes available with CMS and a warranty. I think a 12s LiFePO4 configuration will keep me under the voltage limit of the eZee controller. Is this right?

I want to keep my e-ride factory-standard for awhile, but may get a second eZee hub kit less batteries for tinkering. Has anybody at endless-sphere successfully changed the eZee hub motor wiring to lower gauge for 48V++ operation in similar fashion to Team Hybrid Puma? Anybody planning to try soon?

-- Joey

 

[josh]

Hi Joey

I hope the kit works well for you & gives you plenty of grins .

I'm not familiar with the torque arm, nor the lifebatt cells, but the usual eZee controller upper voltage limit is around 44V (there may be some small variation), so as long as your 12s cells are below 3.66V each you should be ok: from a lifebatt thread here (scroll down a bit that page) it says minimum charge is 3.65V per cell, which gives 43.8V for 12s, a bit close but may be ok - charging more than that would likely go over the limit though.

If it does work & the lifebatt can supply good current (up to 16A limit in the controller) without too much of a voltage drop (should do, especially if a 1p battery too) then that combination of battery, controller & motor could work very well I think, especially on hills. The low voltage controller cut-off is about 32V, or 2.66V per cell, which is just below the lifebatt cells' 85% discharge level of 2.7V per cell .

Look forward to hearing how you get on .

 

[mikebikerad]

I have installed eight of these kits so far and am happy to say that they are the nicest complete kits I ave ever dealt with. The 48volt LIMn battery makes for a really useful and exciting commuter. All my customers have been happy without exception, no breakdowns, or troubleshooting, which is extremely rare in the e bike industry.

 

[Ypedal]

motor, controller, throttle all good.. the 36v 10ah LiMn packs are dissapointing however in that 2 years is about all you get out of them, 3 if you treat them with extreme care but even then they start to swell up and sag hard..

this is an old thread !!.. wow..