mud2005
10 kW
very cool, do you disassemble them and send the cases to the anodizer? I might want to get mine anodized black or even purple. do you have them anodized locally? I live in a small town, I wonder if I can get it done here?
High power RC motor and drive unit production
- Thread starter recumpence
- Start date
recumpence
1 GW
The cans are anodize before mtoor assembly, I'm afraid. I do not think the motor would come apart to do it now.
Matt
Matt
mud2005
10 kW
does astroflight have the motors anodized? I might have to order another motor at some point and I like the idea of a purple motor. I was also thinking about asking for a hardened steel shaft on my next motor. does Bob do this type of custom stuff?
recumpence
1 GW
He is not too throlled about doing one-off suff because of the time involved for one item. I ordered 12 motors anodized black and (I think) they are stocking black cans for me. Each lot of anodizing is somewhere around $50 or so. So, purple would probably be $50 extra if he was willing to do a one-off motor. I am not sure about the shaft.
If you want a black one, I will be stocking them soon.
Matt
If you want a black one, I will be stocking them soon.
Matt
mud2005
10 kW
sweet, thanks Matt
Finally running again - after destroying a belt and finding a replacement. Good stuff Matt 
!!! Campus police (I asked them to check) clocked me at 43mph on 44.4v. Not bad for a cheap motor, cheap esc, and cheap lipos.
[youtube]dW-TsVnCOpo[/youtube]
Mark W. Dickey - KHYS
!!! Campus police (I asked them to check) clocked me at 43mph on 44.4v. Not bad for a cheap motor, cheap esc, and cheap lipos.[youtube]dW-TsVnCOpo[/youtube]
Mark W. Dickey - KHYS
dontsendbubbamail
10 kW
- Joined
- May 28, 2008
- Messages
- 718
flynut,
Very nice build.
How about some details on motor, esc, gears, and batteries. Are you not afraid of catching your inner thigh in the chain?
Bubbsa
Very nice build.
How about some details on motor, esc, gears, and batteries. Are you not afraid of catching your inner thigh in the chain?
Bubbsa
Motor is a Turnigy (HXT) 80-100-B, which Matt initially mounted to the drive. Esc is a Turnigy Sentilon100A HV. Turnigy TRSD Servo Driver was powered with a HXT UBEC. Cheap Dicta 16t freewheel on the drive unit. 43t sprocket mounted to a 6 bolt disc brake hub. 8 22.2v 4000mah <$35.00 eBay LiPo batteries wired for 44.4v 16ah.
I modified a Kona MTB Stem to hold the drive unit. After the first ride, I quickly threw together a aluminum shield to keep my leg in one piece.
I'm not terribly worried about catching my inner thigh, as the chain is aft and quite a bit inboard.
The only problem I have is because I am in the learning stages. I went the inexpensive to start, so the motor confuses the controller under certain RPM and loads - sounds almost like Matt's AXI. When I get home on Sunday I plan on (at least looking at) modifying the ESC to use the eZip's Hall throttle - thanks oofnik!
Many thanks to recumpence - what a ride!
Mark W. Dickey - KHYS
Motor - http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=5142
ESC - http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=4691
Sprocket - http://blogs.myspace.com/index.cfm?fuseaction=blog.view&friendId=53429708&blogId=334583408
I modified a Kona MTB Stem to hold the drive unit. After the first ride, I quickly threw together a aluminum shield to keep my leg in one piece.
I'm not terribly worried about catching my inner thigh, as the chain is aft and quite a bit inboard.
The only problem I have is because I am in the learning stages. I went the inexpensive to start, so the motor confuses the controller under certain RPM and loads - sounds almost like Matt's AXI. When I get home on Sunday I plan on (at least looking at) modifying the ESC to use the eZip's Hall throttle - thanks oofnik!
Many thanks to recumpence - what a ride!
Mark W. Dickey - KHYS
Motor - http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=5142
ESC - http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=4691
Sprocket - http://blogs.myspace.com/index.cfm?fuseaction=blog.view&friendId=53429708&blogId=334583408
recumpence
1 GW
Looks good Mark! I am glad to see another drive in use.
: PRODUCTION UPDATE:
OK, with the whole issue of Lithium shipping going on, I am halving my packs for customers to ship them in smaller capacities. This has slowed things down a bit.
Secondly, I am waiting on my next batch of motors from Astro. Once these two boxes arrive, I will be shipping orders like a madman. I have 70 pounds of Lithium packs in stock. I have 13 Astro motors in stock, 9 ESCs, 4 chargers, about 20 drives of various configurations, etc, etc, etc.
For those who are waiting for an order (especially the large orders), it is all coming together.
I also put a $2,000 deposit down at my CNC shop for other bits to be machined mid July like frame mounts and ISO disc brake to 110mm bcd chainring adaptors (among other things).
This should be a good summer!
Matt
: PRODUCTION UPDATE:
OK, with the whole issue of Lithium shipping going on, I am halving my packs for customers to ship them in smaller capacities. This has slowed things down a bit.
Secondly, I am waiting on my next batch of motors from Astro. Once these two boxes arrive, I will be shipping orders like a madman. I have 70 pounds of Lithium packs in stock. I have 13 Astro motors in stock, 9 ESCs, 4 chargers, about 20 drives of various configurations, etc, etc, etc.
For those who are waiting for an order (especially the large orders), it is all coming together.
I also put a $2,000 deposit down at my CNC shop for other bits to be machined mid July like frame mounts and ISO disc brake to 110mm bcd chainring adaptors (among other things).
This should be a good summer!
Matt
johnrobholmes
10 MW
I also have some ISO to 110bdc and 96bcd adapters being made too. At the machinist for the protos right now actually. I figured 1/4" 6061 aluminum would be a good place to start.
recumpence
1 GW
Great news John! If so, I will just buy them from you. The offset is the only thing I am curious about. I want to space my sprockets inward a touch. Of course, shims will take care of that. :wink:
I have a cool idea for throttles too.
Picture this;
Take a Magura twist grip throttle and cut it shorter. You could use it as a half grip throttle that way. Also, you could cut it VERY short and add a thumb tab to it for a rotating thumb throttle.
I will be researching this soon.
Matt
I have a cool idea for throttles too.
Picture this;
Take a Magura twist grip throttle and cut it shorter. You could use it as a half grip throttle that way. Also, you could cut it VERY short and add a thumb tab to it for a rotating thumb throttle.
I will be researching this soon.
Matt
mud2005
10 kW
interesting ideas on the throttle, I may have to wait a bit to see how many designs you end up with. I like the idea of the trigger throttle also, but I haven't gotten the chance to try one out yet. would it maybe be possible to get the electronics and make myself a custom trigger throttle? I plan on getting a milling machine as soon as I can afford it.
johnrobholmes
10 MW
I have spacer rings being made as well Matt.
Cool idea on the throttle. Got your message, just didn't get a chance to hit you back today.
Cool idea on the throttle. Got your message, just didn't get a chance to hit you back today.
recumpence
1 GW
I just finished two more drives today. I have 4 more to setup for customers. Those are delayed, not for drive unit reasons, but for other secondary parts I am waiting for. So, for a drive unit only order, the wait time is minimal assuming I have everything in stock for them.
John, your motor, pulley, and belt are here and will ship Monday.
I am setting up a few twin motored drives as well. One is my twin 3220 drive for my KMX (that one is finished), one is for a customer, and I am setting up one twin 3210 drive for sale. I will have one batch of parts for a forth twin motored drive left in stock. Maybe I will use that for a twin 3210 KMX trike. :wink:
Anyway, for those who have ordered throttles with their drives, Astro Flight is taking their sweet time making them for me. So, I am compiling everything I need to make them myself.
Matt
John, your motor, pulley, and belt are here and will ship Monday.
I am setting up a few twin motored drives as well. One is my twin 3220 drive for my KMX (that one is finished), one is for a customer, and I am setting up one twin 3210 drive for sale. I will have one batch of parts for a forth twin motored drive left in stock. Maybe I will use that for a twin 3210 KMX trike. :wink:
Anyway, for those who have ordered throttles with their drives, Astro Flight is taking their sweet time making them for me. So, I am compiling everything I need to make them myself.
Matt
PowerPedro
100 mW
- Joined
- Mar 12, 2009
- Messages
- 41
I just received your driveunit matt!! Thank you very much, it looks great. Now we can continue woring on our custom frame. I will keep you informed about the progress...
recumpence
1 GW
Great! Glad it arrived.
If you have any questions, let me know. I will do what I can to answer them.
Matt
If you have any questions, let me know. I will do what I can to answer them.
Matt
PowerPedro
100 mW
- Joined
- Mar 12, 2009
- Messages
- 41
Hi there
I am using a Castle Creation HV110 Controller on my bike and i would like to implement an ON/OFF switch wich is not in the main current. Does anyone have an idea how to do it? Does HV110 has an ON/OFF input?
I am using a Castle Creation HV110 Controller on my bike and i would like to implement an ON/OFF switch wich is not in the main current. Does anyone have an idea how to do it? Does HV110 has an ON/OFF input?
recumpence
1 GW
You can use a switch to turn on and off the center pin of the 3 wire connector. However, that will not shut off power to the logic board of the HV110. It is just a cheap kill switch. to eliminate the power to the boards of the HV110, you will need to cut main power.
Matt
Matt
lesdit
100 W
Matt, can you give us an idea of how much resistance there is in the dual stage drives ?
If Astro 3210's use about 1 amp to 'idle' spin, then how many amps does it take to spin the reduction unit, with it properly/fully tensioned for full power usage ?
If I want to order an Astro 3210, and I have a ping v3 48V20AH battery, would that be a 6 turn motor? I believe the ping can supply 40 amps. It's for a DH bike that does technical trails, and I want to drive the crank to help with uphill gearing.
Has Bob at Astro thought any more on adding some hall sensors in there? Surely he can't be recommending RC controllers for his 'industrial' motors.
-thanks-
-Les
If Astro 3210's use about 1 amp to 'idle' spin, then how many amps does it take to spin the reduction unit, with it properly/fully tensioned for full power usage ?
If I want to order an Astro 3210, and I have a ping v3 48V20AH battery, would that be a 6 turn motor? I believe the ping can supply 40 amps. It's for a DH bike that does technical trails, and I want to drive the crank to help with uphill gearing.
Has Bob at Astro thought any more on adding some hall sensors in there? Surely he can't be recommending RC controllers for his 'industrial' motors.
-thanks-
-Les
lesdit
100 W
Well, I'd love to turn it at 500 rpm, and avoid the reduction altogether, but I don't think that it works that way
Isn't the number of turns determining the current draw for a given power source, as I understand it ?
Somewhere in there is the ability to get the most power out of the motor, without exceeding battery's max amperage limit.
That's my basic understanding of it, but I could be misunderstanding something.
-Les
Isn't the number of turns determining the current draw for a given power source, as I understand it ?
Somewhere in there is the ability to get the most power out of the motor, without exceeding battery's max amperage limit.
That's my basic understanding of it, but I could be misunderstanding something.
-Les
Miles said:
The torque constant is inversely proportional to the velocity constant.
There's a maximum constant torque output, which is the same for all the winding configurations. As you say, the amps needed to get this will vary with Kv/Kt/number of turns.
6t needs 63 amps
7t needs 54 amps
8t needs 47 amps
10t needs 38 amps
Power is torque times velocity (motor speed).
There's a maximum constant torque output, which is the same for all the winding configurations. As you say, the amps needed to get this will vary with Kv/Kt/number of turns.
6t needs 63 amps
7t needs 54 amps
8t needs 47 amps
10t needs 38 amps
Power is torque times velocity (motor speed).
glv
10 W
The V3s can supply a continuous 3C (60A) and the BMS won't cut off until 90A. I think that will be about right for spinning a 6t 3210 motor. Running it at 500 rpm will most likely just turn it into a little pop-can-sized heater, though, so a reduction is pretty much required.lesdit said:
I hope that he'll come around and start slapping those together soon. It sounds like there are quite a few of us around here that want those little beasties with sensors.lesdit said:
Metallover
10 kW
Sorry to just butt in here, but instead of reading 75 pages of interesting posts, can someone tell me where the good parts are and where I can buy a drive unit/motor?
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