Alien Vs Ezee kits

flecc · Mar 28, 2009

I understand that Alien are supplying both brushed and brushless motors now, so you should check to see that you get the brushless if possible. That said, Alien are saying the brushless is slightly faster, but it won't be by any great degree.

Both of these are nominally legal 15 mph kits, but check with Alien and also Cyclepoint on the eZee kit to see if derestriction is possible. It may be that the eZee one in particular can be altered to give 20 mph since at least one of their bikes using that motor does 20 mph when derestricted.
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Danny-K · Mar 28, 2009

All the Alien controllers are fitted with a potentiometer to limit the top speed to no more than UK regulations of 15/15.5mph. On his site the Alien retailer says the potentiometer can be turned up (he provides a photo diagram with a helpful arrow pointing where to find the potentiometer), so that the motor speed can exceed the UK maximum guidelines. Reading between the lines that appears to equate to about 18mph or so. He then states that this is for off-road use only at this maximum setting. And obviousley the range of the battery will decline from that intimated on the website for that shown against the legal setting.

joab · Mar 29, 2009

EZEE kit

I got the EZEE kit for more then a year now. Got it from Renaissance bike shop

. I'm very happy with the kit. Get the cycle analyst with it. 20mph is reallistic with this kit but it will be hard on your battery. I now have about 7500km, still on the first battery.
Regards,
Jo

Tubaman · Mar 29, 2009

I bought the Alien kit in January this year and am really impressed with the quality of it even down to the packaging it came in !

The battery is impressive, the motor is powerful (I weight 19+ stones !) and the instructions are clear. Personally, I would have preferred a twist throttle with the kit rather than the thumb throttle supplied, but it works well & he will send the twist if you ask.

The best bit about the kit ?................ de-restrict it (takes about 5 seconds) and you have a different bike, MUCH better but, naturally, less miles.

Personally, can`t speak highly enough about the Alien kit from experience. I bet it easily compares with more expensive kits.

The Maestro · Mar 29, 2009

Personally I've come across 3 Alien batteries that have failed for the same reason within months on prchase and replacement. I've had 2 batteries fail and a friend has another one.

Derestricting the controller doesn't reduce the range as much as you might think. I found very little difference. Derestricted I got 25miles when the battery was new (thottle on all the time and moderate pedalling over average terrain - a few average hills etc).

If the batteries are sorted I'd recommend the Alien, Ezee don't exactly have a great base in the UK at the moment with Cyclepoint. Maybe if you live close to cyclepoint then you could go to the Ezee but if you are going to order it by mail I can't see there being a big difference in servicing/warranty problems.

Danny-K · Mar 30, 2009

Tubaman said:
I bought the Alien kit in January this year and am really impressed with the quality of it even down to the packaging it came in !

The battery is impressive, the motor is powerful (I weight 19+ stones !) and the instructions are clear. Personally, I would have preferred a twist throttle with the kit rather than the thumb throttle supplied, but it works well & he will send the twist if you ask.

The best bit about the kit ?................ de-restrict it (takes about 5 seconds) and you have a different bike, MUCH better but, naturally, less miles.

Personally, can`t speak highly enough about the Alien kit from experience. I bet it easily compares with more expensive kits.

Tubaman, derestricted - what's the most you've had out of the Alien motor on a level road before assistance ceases?

torrent99 · Mar 30, 2009

Danny-K said:
Tubaman, derestricted - what's the most you've had out of the Alien motor on a level road before assistance ceases?

If the Alien kit is anything like my Wisper (which if it's the Suzhou Bafang based kit it should be similar), it's quite hard to determine when assistance ceases as gradually eases off until you are pedalling faster than the motor can spin. On the Wisper (derestricted) this is around 17-18mph, however if I don't pedal it will propel me (90kg) at around 15.7mph on the flat.

I'd expect the Alien kit will be similar. (Of course you could overvolt it later if you wish....

)

torrent99 · Mar 30, 2009

Lovesexy said:
Hi All

I've been researching conversion kits and I think I've narrowed it down to these two kits with the help of some guys on this forum.

Alien 36v - 36v Conversion Kit 26" & 700C

Ezee 36v Renaissance Bicycle Company

That eZee kit does look very good & eZee have a good reputation for their bikes, and good support via this forum or their dealers. Plus it's overvoltable (recommended max is 48V) without changing the controller to get that extra speed you want.

I believe it's eZee's own design of motor as explained on this forum by the eZee boss himself. (They used to use Suzhou Bafangs, but decided they could do better!). Takes disc brakes, & the rear version fits in narrower spaces than the Bafang.

Of course it is a tad!?!? more expensive, plus you'll probably have to pay some import duty to get it to Europe if you buy it from Renaissance.

Mussels · Mar 30, 2009

I like the gear range in the Ezee freewheel. 11-30 teeth, anyone know what brand it is?

Mussels · Mar 31, 2009

Lovesexy said:
But it seems that by buying the Ezze kit I'll be paying £500 extra for a couple of extra MPH and a little more torque. I'm a noob but it hardly seems worth it.

With the alien kit do I have the option of buying new components in the future if I want to speed up the bike?

Also, what happens if the motor wheel buckles?

You have to option of upgrading but you probably need to upgrade the controller as well as the motor, it's not really practical. The Ezee kit looks like it has better components but is it worth over twice the price, I don't think so but it depends on what you want and can afford.

torrent99 · Mar 31, 2009

Lovesexy said:
But it seems that by buying the Ezze kit I'll be paying £500 extra for a couple of extra MPH and a little more torque. I'm a noob but it hardly seems worth it.

With the alien kit do I have the option of buying new components in the future if I want to speed up the bike?

You could probably treat the alien kit as a bunch of parts that Mr Alien has brought together.

If you get the Suzhou Bafang version (provided he still sells it), upgrade to a faster machine would be something like:
1) New 48V controller £30-50.
2) New 48V battery (several hundred) or 12V booster on the kit one (technically more difficult than a straight 48V, must be done with great care+extra protection circuitry)
3) Metal gear for the motor from ecrazyman@gmail.com... £unknown a few quid probably.

The equivalent for the eZee kit would be:
1) New 48V battery (several hundred) or 12V booster on the kit one (technically more difficult than a straight 48V, must be done with great care+extra circuitry)
2)That's it.

Both options would require a 48V battery which are harder to get hold of in a "nice" battery case etc. than 36V batteries. Most probably you'd end up doing a DIY case of some sort. I suppose you could get 2 "nice" 24V batteries and combine them in series, but as with the 12V booster option you need extra protection circuitry to do this properly.

So the eZee will be more convenient to upgrade.

Also, what happens if the motor wheel buckles?

You get it rebuilt just like any other wheel! There's quite a few bike shops that would do this for you, SJS Cycles has been used by a few forum members I think the cost was around £80 quid (for a very high quality build)?

The Maestro · Mar 31, 2009

Lovesexy said:
But it seems that by buying the Ezze kit I'll be paying £500 extra for a couple of extra MPH and a little more torque. I'm a noob but it hardly seems worth it.

With the alien kit do I have the option of buying new components in the future if I want to speed up the bike?

Also, what happens if the motor wheel buckles?

I upgraded my Alien Kit to take a new controller bought from e-crazyman on ebay for about £20. This allows it to be used with 48V. In fact someone on here (Tiberius I think) has tested this motor/controller combination up to 72V

It is pretty easy to do, in fact it would be simple but the only problem is that the wires are often slightly different colours. I had to do a bit of research and experimentation. Eventually I had to cross a few wires over and buy a couple of cheap connectors.

If the motor wheel buckles you just need to take it to a local bike shop to be fixed - probably just replace or tighten a few spokes etc.

Mussels · Mar 31, 2009

The Maestro said:
If the motor wheel buckles you just need to take it to a local bike shop to be fixed - probably just replace or tighten a few spokes etc.

The SB hubs have flaws, SJS modified mine with eyelets because of this. Probably best to send it to a specialist rather than the LBS, mine went to a reputable LBS the first time and managed 4 miles before falling apart.

SJS said there were possibly better and more expensive options than the rebuild I had but apart from the odd non drive loose spoke I've had no trouble with it at all.

Cyclezee · Apr 2, 2011

Update of eZee Kits 2011

The latest generation of 26" and 700c eZee kits, as supplied, are restricted.

The motor is limited to perform within EN regulation from controller limitation and advance setting with the Cycle Analyst to give a nominal power of 250 watts and 16 mph speed limit or even less.

They can be easily de-restricted, if required, for off road use only. This will increase assistance to 20 mph, but reduce range proportionately.

eZee motor : model EZ-D-P/3

Type : Brushless planetary gear DC motor with clutch/freewheel

Specifications :

Poles : 16 pair
Reduction gear : 1 to 5.0
Weight ( front wheel ) 3.5 kgs
Hub body : Aluminium alloy ADC 5, surface finish : polished, anodised silver, anodised black.
Axle width/drop out : 9.95 mm

Maximum continuous power rating : 350 watts (de-restricted)
No load rpm @ 36V : 280 rpm ( +/- 20 rpm )
No load current : 1.5~1.7 amps
Motor constant K: 7.7 rpm/volt
Max. Torque output of motor: 32 N.m ( +/- 2 N.m )
Efficiency at max. torque: 65 %
RPM of motor at Max. torque : 120 rpm ( +/- 5 rpm )
Current at Max. torque : 19 amps
Peak Motor efficiency: 82 % ( +/-5 % )
Input current at peak motor efficiency P1: 13 Amp (+/- 0.5 Amps )
Torque at peak efficiency : 16 N.m (+/- 1.0 N.m)
Mechanical power output P2 at peak efficiency: 350 watts derestricted
Torque performance : 8 to 26 N.m operation efficiency bell base 75 % peak 82 %.

flecc · Apr 2, 2011

Thanks for the very full specification John, if only other manufacturers were so open with their technical information.
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Cyclezee · Apr 2, 2011

flecc said:
Thanks for the very full specification John, if only other manufacturers were so open with their technical information.
.

Thank you Tony,

It is my intention to open, honest and give as much information as possible, I believe that it is of mutual benefit to the buyer and seller.
I know I can relly on you and others to correct me right ifabd when I get anything wrong.

banbury frank · Apr 2, 2011

Kit

Hi

Lovesexy

Have you looked at our Express kit

Front or rear wheel Disc brake compatible Direct drive Nine continents motors 26 inch or 700C

Controllers 36 / 48 volt Auto detect just swap battery

Cycle analyst compatible

we offer a fitting service £100

NOW with 36 volt 15AH battery At £895

we have demo bikes in Banbury

Open 7 days a week

Kits in stock our motors have a 5 year Warranty

The Future is Today!

Frank

stevebills · Apr 2, 2011

banbury frank said:
Hi

Lovesexy

Have you looked at our Express kit

Front or rear wheel Disc brake compatible Direct drive Nine continents motors 26 inch or 700C

Controllers 36 / 48 volt Auto detect just swap battery

Cycle analyst compatible

we offer a fitting service £100

NOW with 36 volt 15AH battery At £895

we have demo bikes in Banbury

Open 7 days a week

Kits in stock our motors have a 5 year Warranty

The Future is Today!

Frank

what type of battery frank a nice lifepo4 or a car battery?

Alien Vs Ezee kits

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