EV Tech motor?

[Whiplash]

Anyone tried the EV Tech geared 500 watt rated motor? I have heard it is a well build unit. Anyone have experience with these? How do they handle higher voltages? Good torque??

Thanks!

 

[Whiplash]

Anyone? I just talked with the owner/engineer for about an hour, who said it would on 48V 22A run circles around a 5305 in torque and top speed.... I don't know, it SOUNDS killer, but I want to see it in action! Or at least hear from a member that has tried one! I WOULD like to but American though! Very nicely made by the pics on their site... any input??

 

[Whiplash]

NOBODY? wow I figured they were untested here but holy cow, I though there would at least be one?

 

[torker]

Take the claims with a grain of salt. Not too sure how it could be so much better than what has been tested here at ES. Plus those prices are high Here you can see exactly what different motors are capable of. Regardless of what the manuf. claims. Plus those probably have components made in China. Maybe EVTech will prove me wrong That would be good actually. I would love to see more american made products.

 

[grindz145]

Get a sample and I'm sure there will be a line of folks willing to test it out and report

 

[Whiplash]

Yeah, if I had cash to burn I would, but I am trying to find the best motor for my money on the first try, albeit not too easy to do so!

 

[Whiplash]

Take the claims with a grain of salt. Not too sure how it could be so much better than what has been tested here at ES. Plus those prices are high Here you can see exactly what different motors are capable of. Regardless of what the manuf. claims. Plus those probably have components made in China. Maybe EVTech will prove me wrong That would be good actually. I would love to see more american made products.

Yeah, I understand the price is a tad higher than others, but I would be willing to pay if it is in fact a better mousetrap! Not to mention the USA thing is worth a good few bucks to me for sure, even IF there are a few components in there from other countries, the main body, bearings, and axle are all from here which means better metal for sure!

 

[liveforphysics]

Is this the motor you're talking about?

Because yes, the 6:1 reduction could indeed give it advantages in efficiency and performance over most if not all of the direct drive hubmotor offerings.

As a rule of thumb though, they are often noisy and have a lot more failures modes than a direct drive hub, like gears stripping, bushing/bearings wearing, freewheels breaking, keyways stripping, and inherently don't cool as well.

But maybe this hub has found ways to avoid the problems most geared hubs encounter? Something makes me doubt it though.

 

[Whiplash]

Yeah, I asked him about the longevity, and he said he had several police bikes in his area using them with over 10,000 miles of police use on them without ONE failure, but I take that with a grain of salt since he is the owner of the company! I would really like to see one in action, but I have yet to find any video of one anywhere on the web. Their site has some vids of their lesser powerful commuter hub but not this one. It does look like a quality piece though. One thing that makes me lean towards them is the fact that the company does MUCH more than just build bike hubs, they have many military contracts and in fact the hub I am looking at is a cousin of one they built for a paratrooper bike for the military that had 5K watts of output and 60 mile range under aggressive riding! Too bad the bike cost like $20,000 to produce! LOL! I think I will have to chance it, but I will document everything real good for you guys don't worry! In the mean time, if anyone can find vids of it PLEASE post them here! Again its www.texaselectricbikes.com or EV Tech motors.

 

[deVries]

Yeah, I asked him about the longevity, and he said he had several police bikes in his area using them with over 10,000 miles of police use on them without ONE failure, but I take that with a grain of salt since he is the owner of the company! I would really like to see one in action, but I have yet to find any video of one anywhere on the web. Their site has some vids of their lesser powerful commuter hub but not this one. It does look like a quality piece though. One thing that makes me lean towards them is the fact that the company does MUCH more than just build bike hubs, they have many military contracts and in fact the hub I am looking at is a cousin of one they built for a paratrooper bike for the military that had 5K watts of output and 60 mile range under aggressive riding! Too bad the bike cost like $20,000 to produce! LOL! I think I will have to chance it, but I will document everything real good for you guys don't worry! In the mean time, if anyone can find vids of it PLEASE post them here! Again its http://www.texaselectricbikes.com or EV Tech motors.

Please buy one, and do a full test report on ES. I'm sure you can get advice here on how to open it and document the inside. If the owner took an hour to speak with you, then that is a good sign he will take the time to service your motor if need be.

I am going to use their low watt motor soon. I bought it years ago, and I've yet to get a controller for it.


.

 

[John in CR]

...I am trying to find the best motor for my money...

And you're asking us about a $590 500w geared hub motor? Something just doesn't smell right.

 

[John in CR]

Talk to Cellman. I believe that may be the same motor he's selling for $160.

 

[evblazer]

Oh wait I hadn't noticed the first time but they are 20 miles from my house! Wonder if I saw that before and just got scared away by the $500 300watt motor price since they don't do 20" wheels
That 500watt geared hub is 9lbs. I know weight doesn't necessarily mean much but it has a chance at having something powerful under the covers to go with that 6 to 1 ratio. Course 9lbs could by a typo and and carried over from a whole wheel weight or something.

 

[Whiplash]

...I am trying to find the best motor for my money...

And you're asking us about a $590 500w geared hub motor? Something just doesn't smell right.

I didn't say the cheapest, just the best motor for my project and the best motor for my money. The CL's are listed for over 600 bucks some places!

 

[Whiplash]

Talk to Cellman. I believe that may be the same motor he's selling for $160.

If that is the case, I would like to see them! But I was told they are almost entirey made in the USA and have US bearings and cases made in house! But that is just what I was told..

 

[liveforphysics]

Talk to Cellman. I believe that may be the same motor he's selling for $160.

If that is the case, I would like to see them! But I was told they are almost entirey made in the USA and have US bearings and cases made in house! But that is just what I was told..

I'm thinking somebody it taking you for a ride.

Ask them for a picture of one with the cover off.

 

[cell_man]

Talk to Cellman. I believe that may be the same motor he's selling for $160.

If that is the case, I would like to see them! But I was told they are almost entirey made in the USA and have US bearings and cases made in house! But that is just what I was told..

I'm thinking somebody it taking you for a ride.

Ask them for a picture of one with the cover off.

Well last time I was over at the Mac factory I did see some boxes with EVTech written on the side :wink: I throw in a free set of Nylon gears and cover the paypal commission for 160USD (plus shipping).

I recently sent 3 pcs of Mac motor by slow boat to the USA for about 75% of the price mentioned above for 1 and I still can't shift them

 

[Whiplash]

Your Kidding!! That bum told me they were made in the US! LOL! I thought he was talking a little too fast! I figured the ones you had would be a copy, not the actual thing he is selling! I PM'd you back, let me know what you come up with. Thanks!

 

[Toorbough ULL-Zeveigh]

Well last time I was over at the Mac factory I did see some boxes with EVTech written on the side

how long ago was that?
from April on the google groups tidalforce forum:

BMC, can't say much about them anymore. We severed the ties more than two years ago and never looked back. The point is valid though. We are building brushless motors for bikes, and other vehicles as well, but we tend to keep everything matched up in the power and performance end of things. We know we can push our motors that we rate at 500W to 1000W and hold it there for as long as we have battery to feed it. So far, no smoke.

the BMC didn't meet his long term durability requirements for the police & he's now manufacturing (or more like hired someone in china to manufacture for him) his 'Going Electric' brand of motor.
it's heavily based on the BMC design (great to c the chinese get a taste clone) but has been beefed up to his own specification & design tweaks, need to search his posts to find the bits scattered around there.

here's a review from a satisfied customer of the older BMC.
i've only read positive reviews that Doug is a standup guy & i will be ordering from him shortly for the very first time & have no concern about his customer service whatsoever.
if u post any questions for Doug at the TFF (aka 'plasmadust' but sometimes will get posted under his real name when sent via email instead of direct to the forum) you'll get a quick response as he's a regular there.

 

[Whiplash]

OK Thanks! SO then Cell man was mistaken? I don't know if I believe that though, he has been a stand up guy here for some time...?? anybody else know anything about this? I am leaning towards Cell man's motor simply due to the price, but I am still looking into it...

 

[Toorbough ULL-Zeveigh]

he's probably not mistaken, depends how long ago that was.
even if it's quite recent EVTech had a long term relationship with BMC so when that ended u don't simply throw out big pile of custom printed boxes & would use them up over time i'm guessing is another possibility.

anyway Doug is an EV pioneer of sorts, been in the business for 20 years & always been striving to create better product.
i've no doubt his Going Electric version is an improvement over the BMC, but is it worth 3-4 times the price is a personal choice one can only answer for them self.
does seem a little high to me but yeah it would be nice to have it independently tested & reviewed if it lives up to it's claims the asking price may not be that out of line.
asking him to post a pic with the cover off is a pretty good idea, he'd most likely do that much for you & tell him other potential customers are curious too, i know i am.

 

[Whiplash]

Yeah I sent him an Email after my conversation with him but I have not gotten anything back yet but that was just on Friday so Likely I will hear back Mon.

 

[Toorbough ULL-Zeveigh]

have u chekt out this BMC thread/rant yet if u want some light reading?
may help explain why u can't give the little darlings away.

 

[deVries]

from April on the google groups tidalforce forum:

BMC, can't say much about them anymore. We severed the ties more than two years ago and never looked back. The point is valid though. We are building brushless motors for bikes, and other vehicles as well, but we tend to keep everything matched up in the power and performance end of things. We know we can push our motors that we rate at 500W to 1000W and hold it there for as long as we have battery to feed it. So far, no smoke.

the BMC didn't meet his long term durability requirements for the police & he's now manufacturing (or more like hired someone in china to manufacture for him) his 'Going Electric' brand of motor.
it's heavily based on the BMC design (great to c the chinese get a taste clone) but has been beefed up to his own specification & design tweaks, need to search his posts to find the bits scattered around there.

here's a review from a satisfied customer of the older BMC.
i've only read positive reviews that Doug is a standup guy & i will be ordering from him shortly for the very first time & have no concern about his customer service whatsoever.
if u post any questions for Doug at the TFF (aka 'plasmadust' but sometimes will get posted under his real name when sent via email instead of direct to the forum) you'll get a quick response as he's a regular there.

All of this is correct, and it's still very probable BMC will continue to make his older designs too.

What you have to understand is Doug specs his own design. Such as the 6:1, special gears/bearings, etc. His first motor is made for him by BMC, but his second 500w motor may now be made elsewhere. Not surprising he would still get his older design from BMC, and Cellman saw those boxes. He probably has an exclusive spec/design agreement with BMC, so BMC can not sell his design.

I ordered three motors from Cellman on a slow boat here. Cellman has contributed A LOT here on ES, and Doug stopped posting here years ago. I can definately recommend Cellman. 8)

To be honest the 500w motor from Doug will have better quality materials, imo, and should last longer with less maintenance. But I'm willing to save money with Cellman.

Once Cellman gets the new "composite gears" or green gears, then these Puma/Mac motors should be good to go for higher speeds and more torque abuse.

Also, Doug's motors are likely to be more efficient. He said his motor blew away the competition in this category, so you'll likely go further for the same amount of battery using his motor.

 

[Whiplash]

He told me the same thing, however I think I will be getting Cellman's motor as it stands right now and see how it does on my prototype, I figure, if its the same dimensions etc, as Doug's motor if the MAC does not deliver, I will get it in writing that it is not the same motor and just use his motors in their place. One thing that bugs me is that Doug would not stand behind it with any more than 1000 watts and I just can't see that being enough power to do what I want and I have seen the MAC motors over 2000 watts with a little gear problem, which I am in no way afraid of, I have access to a full machine shop and can MAKE anything I need to to get it to do what I want. In fact if that is the only problem I assure you, I will release a kit to make em STRONG even if I have to replace the freewheel and make a bulletproof carrier, that's not too big of a deal to me, I am sure it can be done, and as for the trouble Mark had with the key wobbling out, I will simply take it apart when new, and locktite it in from the get go and if that does not work, I'll just put a second key on the opposite side as well, this is done all the time with machinery, I could even use tool steel for the key if it likes to shear off and locktite the carrier in place when assembling it. all these things will make big differences as long as you do them BEFORE the parts start to wear, once they get loose forget fixing them, at least most of the time.


Hey CellMan check your PM's! LOL!