High power RC motor and drive unit production

[dimitrib90]

Hmm, I may have to put slipper clutches into production, huh?

So, do you have two of those motors built or just one?

Matt

I think that the slipper clutches would not only be the best way to go. A good esc for $1000 is unreasonable and just down right ridiculous.

 

[Miles]

David,

You might remember this thread on RC groups: http://www.rcgroups.com/forums/showthread.php?t=788065

 

[MitchJi]

Hi,

David, I've been meaning to ask, do you have the specs for the 60-series motor listed anywhere here on E-S? Specifically, I'm looking for the dimensions, weight, shaft size and kVs that might be available. Will you have one with a kV in the 130-150 range?

Thanks -- Gary

Gary:
http://www.endless-sphere.com/forums/viewtopic.php?f=28&t=4625&p=106509&hilit=+130#p106509

I'll offer several Kv's. A 3 turn 6045 motor would have a Kv of around 130. The 2 turn would be around 200. So I think that will be good. Of course the 2 turn would scream at 85V which is where I want to run i

I'm shooting for a 75mm OD (~3”) or I'll start getting too close to my 40 series motors. There will be several lengths available.

David:
I would be nice to have a single place with all the currently planned specifications and features. A simple Web Page would be nice, something like this:
http://www.wisil.recumbents.com/wisil/shumaker/edrive.htm

Matt would probably set it up for you or if you email me the information and pictures I'll set up a simple page for you. Once you have it should put the url in your signature.

 

[GGoodrum]

Thanks, Mitch. I knew I had seen it somewhere. I agree, though, it would be handy to have this motor have it's own thread, or somewhere we can easily get to if info is needed, other than being buried on page 75 of a bloated thread.

Anyway, the 130 kV version sounds like it wil be a real winner for ebike use.

 

[recumpence]

Picked up the drive mounts today. I will post pics of it tomorrow.

The drive is really compact. Right now Dave is quoting me on machining a cool spoke patern into stock aluminum pulleys. I am also getting a quote on custom made 60 tooth pulleys. (I can ship drives with plain pulleys too for those who don't want to wait). Gary, picture a huge Hyper Drive. :wink:

Anyway, all is looking good!

Matt

 

[John in CR]

Plain please, if it costs less. I'll provide all the coolness required, and leave the fancy pulleys to those who weren't cool before it was cool to be cool, and those who are too young to know the difference. :wink:

John

 

[GGoodrum]

Gary, picture a huge Hyper Drive. :wink:

Nice. Can't wait.

 

[MitchJi]

Hi,

Haha, yeah that's the 6050/2y motor I've been running it on my scooter, but without current control this thing is too much. It's almost impossible to accelerate at anything reasonable. Even just bumping the throttle with cause the scooter to lurch forward almost doing a wheelie. I've been calling around to different folks to try and find an ESC that does current control on the throttle as opposed to voltage control...and things aren't looking good. Castle told me they were gonna put off the SHV for now, and it sounded to me like they had dropped the project all together. So right now we have the motor, the batteries, the drive system....but no good ESC. Any ideas are welcome!!?

I sent Castle Tech Support two email's asking for the differences between the HV and SHV Controllers:

What are the differences between the SHV series and the HV series other than the input voltage?

It looks like the SHV Series with the optional measured current sensing supports Hall Sensors. Is that correct? How much does that option cost?

Will it handle heat better in low airflow environments due to the heatsink?

Input voltage, size, switch relays, etc . Totally different controller. It would handle heat better due to the heatsink, and the fact that it's not being pushed anywhere near it limits like the HV110's are. Options, costs, etc the bosses have not figured out yet. An HV110 will handle 2-3kw fine, but you would have to add extra caps as recommended. The ESC is meant to start an airplane motor...not a person on a bike. No estimate on release for the SHV. Until they're made I don't know whether they'll be in stock or on request.

My original question was are there any extra features with the SHV controllers (beyond the higher voltage that I wouldn't be using) that would make me want to spend two or three times as much.

As the SHV specifications are finalized it would be a good idea to list any differences/advantages on the web page if you want to stimulate sales of the more expensive product.

Voltage is the only difference.

If their second email is correct then no SHV Controller isn't an issue for under 50 volts. It would be nice if David or Matt would test the 60 series with an HV110 and post the results.

 

[recumpence]

I will be doing just that. :wink:

Castle is trying to keep their options open when it comes to the SHV controllers. No biggie. They wil figure it out, or another company will. That is where the market is going.

Matt

 

[Miles]

It's not the delay on the the SHV controller that bothers me, it's the uncertainty over when/if CIL will be available

 

[GGoodrum]

Pics, Matt. We want to see more pics!

 

[recumpence]

More pictures!

 

[GGoodrum]

Excellent, Matt. Now I can look seriously at some mounting options. What is the distance between the holes on the side. It looks to be about 3", or so. Are they 1/4-20s?

 

[Miles]

8) Very nice, Matt

 

[etard]

Artwork, Jesse James and the OCC guys got nothin on you! Can you put a second stage directly on that one? Or is there different parts necessary for that? How would the chain freewheel sprocket be mounted, alongside that big pulley? Thanks Matt, I can't wait to see this mounted on your beast.

 

[recumpence]

Gary,

You've got good eyes. Yup, 1/4 20 threeinches apart.

Etard,

The first pis are of the single stage. The last pics are of the dual stage (no bearings and shafts installed yet).

You can see the two stage drive folded up and layed out.

Matt

 

[deecanio]

8) wayy cool 8)

that'd fit in the hole

 

[recumpence]

that'd fit in the hole

 

[GGoodrum]

that'd fit in the hole

The full 9"??

 

[GGoodrum]

Hmmm... Too bad those mounting holes weren't turned 90 degrees. Then I could run a couple of long 6mm bolts through, right into the water bottle mounts. I think they are also spaced 3" apart. Although not as "elegant" an installation as maybe doing a custom mount somewhere, it would be perfect for my 16" Dahon, which doesn't have a lot of space.

 

[johnrobholmes]

Water bottle mounts wouldn't take the power, not in a million years.

 

[GGoodrum]

Water bottle mounts wouldn't take the power, not in a million years.

I'd guess not long-term, for sure, and probably not at the power levels I want to run (4-5kW...).

 

[MitchJi]

Hi,

Running mounting bolts into a collar, something like these, clamped to a tube, might work but if they were clamped on the down tube (for example) I'd want something clamped to another tube (the seat tube for example) to prevent rotation:
http://shop.ebay.com/?_from=R40&_trksid=m38&_nkw=+two-piece+SHAFT+COLLARS

 

[deecanio]

that'd fit in the hole

The full 9"??

I make it 7" (leave it) all i need to do is fit the body in the hole (leave it) - if the sprocket overhangs its no biggy as it will be wider and hopefully not impede my suspension.
i think i will get away with it PIC no.2 looks like mine :lol:
water bottle mounts, for sure NO
this'll need a damn good clamp to stay put at 4kw+ - should be easy enough to make a round clamp for the seat/downtube then bolt in the side where Matt has put the holes, nice 8)
right then, how long until i can get my hands on one matt ??? hehehehe.


D

 

[recumpence]

I just need to pick up bearings and shaft material (very easy to obtain). I have pulleys in stock. However, the pulleys are stock blank aluminum pulleys. My pretty spoke patern pulleys will take a couple weeks to get made. Other than that, the FW adaptors are needed.

So, I guess, for those who do not want fancey pulleys and can wait to get the FW adaptor, I can start shipping very soon.

Oh, the motor mount plates do not have slots milled for the motor mount screws yet. I need the screw spacing for each motor to machine those in one at a time.

Matt