COLOSSUSWRC-7KW -75KV-NSK

Jay64

Jay64

100 kW
Joined
Nov 16, 2007
Messages
1,640
Location
St. Petersburg, Florida
I just got my 7kw colossus motors in today. Thanks for re-packing them so well Etard!
I figured I would start a new thread here, away from the sale thread.
COLOSSUSWRC-7KW -75KV-NSK Sale thread

Anyone that has some is invited to add your info about your motors and what you have done with them. Arlo, I know you have found some issues, please continue to post your info also.

I ended up getting two reds and two greens. Still trying to decide where they will end up. I know I will probably put them in a number of different builds at some time or another, just tyring to decide where to start. :lol: Working with Tostino at the moment to build some controllers for these.
small_colossus_motors2.jpg
 
Nice motor!! When will get your webpage online? I would like to see some specs to be able to decide if it fits to my upcoming applications.... How about thermal specs? What magnets do you use and how much temperature can they stand? Is there a good thermal transmision from the windings to the flange.? I have learned that there can be big differences between outrunners.... What is the powerlimit at 50V? My final question is if the motor is capable of the radial forces of a belt pulley or do you need a bearing support for that?

Peter
 
Power Pedro, I am not the seller of this motor, I am a customer. I think the website info for when it will be available for sale would be more for the sale thread that I linked above. As for the rest of your questions, I don't have an answer for those either, as I just received mine and have not done any testing on it yet. I also will be trying to get a few projects finished with these before I start pushing things to their limits with them, so it might be a while before I am able to answer any limit questions. But there are a few of us on here that now have these motors, and are starting builds with them. So having these questions posted before we start testing will maybe make it easier to look for those specific things you are interested in. Unfortunately, I don't know if you are going to get any immediate answers on the limit questions from us. Give it a little time and I'm sure you will get the answers though. But Markobetti is also reading this thread, so they might get limit numbers before we do.
 
Jay64 said:
Power Pedro, I am not the seller of this motor, I am a customer. I think the website info for when it will be available for sale would be more for the sale thread that I linked above. As for the rest of your questions, I don't have an answer for those either, as I just received mine and have not done any testing on it yet. I also will be trying to get a few projects finished with these before I start pushing things to their limits with them, so it might be a while before I am able to answer any limit questions. But there are a few of us on here that now have these motors, and are starting builds with them. So having these questions posted before we start testing will maybe make it easier to look for those specific things you are interested in. Unfortunately, I don't know if you are going to get any immediate answers on the limit questions from us. Give it a little time and I'm sure you will get the answers though. But Markobetti is also reading this thread, so they might get limit numbers before we do.
Click to expand...

Yea Jay , i think youll get numbers quicker than we do. Web page was made, but unfortunately we didnt like it. I made it and its slick, but the main thing is its not information friendly enough. Second thing is ,we work like crazy here on few projects. Soon there will be website and we also are oppening account for paypal oredering....but we are not stopping there...... . i know hal runned the motor with his new gearbox so we ll see what he comes up with
Pedro , the motor you see here as it was said in sale thread before wasnt long-run tested. The members who bought the motor had an idea what the motor can and cant do. .. After officail web page and paypal finished there will be normal regular sales and motor info etc....
Jay , what are you waiting for?, run the motor :twisted:
 
I'm working with Tostino to build some custom controllers, but we have been having some issue with ordering some of the parts. Digikey claims they totally lost one of my orders. After a month we contacted them to see what was going on with the order and they said they lost it, we had to re order. I also have to get some hall sensors to put into the motor. But I am working on some of the chassis that I plan to use these in. I just sent out some motorcycle forks to one of my old sponsors who started his own suspension company, he is going to completely rebuild them for me. Once I get those back I will have a full rolling chassis. I also am working on restoring some old hydroplane boats that I picked up a while ago, I want to give these motors a run in those as well. I've got a rolling chassis that will be perfect for a drag bike, that I want to try these on. I also got an electric shopping cart that I want to throw one of these into and scare the piss out of some people with it. :twisted: :lol: So, I've got a lot of chassis that I am going to test them in, probably going to end up running them in all of them to test some different things out. But waiting on finishing the controllers to be able to actually run the motor.
 
I'm gonna go down and talk to my machinist about having one long shaft done so I can put all four of them end to end. I think those will line up awesome with the shaft drive on my drag chassis that I want to build. If these work out as well as I am thinking, I might even go and pick up that race go kart I have been eyeing.
 
Ha ha, yeah, I was thinking about that. Had a little flash of a thought that it would be pretty damn funny to get a paddle and start paddling for a bit to get the boat moving, and then fire the motor up. :lol: :lol:
 
Btw, does anyone have a good source for hall sensors that will work for these motors?
 
http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_homepage_link=hp_go_button&KeyWords=s411a&x=0&y=0

Ten for $20.11. Fast shipping. Genuine parts. :D
 
Looks like I am gonna need about 15 -18 of these. Anyone else need any? Im at yhe first price break, few more people and we can get the second price break. Etard, you wanna get a set for your motor?
 
dnmun said:
the hall sensors, honeywell SS41 are cheaper from mouser. see if 50ct gets you under 65 cents.

mouser pt # 785-SS41
Click to expand...

Yes, but the SS41 is a +/-200g device whereas the SS411A is a +/-60g device. The lower switching threshold gives a slight advantage for those who want to fit sensors externally, where the field strength will be lower.

Personally I only ever use the SS411A devices, because I've found that they work extremely well. I've modded several motors now and so far (touch wood....) no Hall failures.

Jeremy
 
thanks jeremy, so educational. i even was looking through the mouser listing and saw they are only about 15 cents cheaper at mouser anyway, $1.52 each. but looking around found this technical on the different types of hall sensors from honeywell, i liked it for the summary of the variety of sensors. the SS40 series is all bipolar and the SS46 is bipolar latching, never knew that:

http://sensing.honeywell.com/index.cfm/ci_id/147509/la_id/1/document/1/re_id/0

and here is where you can see the +/- 60g he was talking:

http://sensing.honeywell.com/index.cfm?ci_id=140301&la_id=1&pr_id=128211

and the cheap ones, the SS41 are 88 cents now in 50ct. up 30% in one year, no inflation?

here's the data sheet for it:

http://sensing.honeywell.com/index.cfm?ci_id=140301&la_id=1&pr_id=128207
 
Personally I would prefer to order from mouser if all things are equal. I have been having some problems ordering from digikey lately.
Jeremy, thanks for the clarification on the different halls. I was just about to ask that.
 
To be honest, I'm not sure that it really makes much difference, but something in the back of my mind tells me that the lower switching threshold is probably a good thing for timing accuracy.

Jeremy
 
I'm going to be ordering some crime mouser. If anyone wants some for the 50+ price let me know in the next day or so.
 
As far as I can tell, the 75Kv nominal wind seems to be 14t. The turns needed for any given Kv (connected as delta) are, from what I've been able to reverse engineer:

Turns Kv
1 1060
2 530
3 353
4 265
5 212
6 177
7 151
8 132
9 118
10 106
11 96
12 88
13 82
14 76

Jeremy
 
It's a week or two away yet, Marko, as I'm busy catching up on other work. I'll post it as soon as get it done.

Jeremy
 
I was reading the hall sensor placement for the turnigy motor thread and a few members really went all out mapping the prime locations for the hall placement. Has anyone done any of this yet w these motors? I don't have the tools they were talking about having used in the other thread.
 
If you're going for external placement, the stuff that was worked out for the Turnigy should be the way to go. If I remember right, you put the halls near the center and a few mm away from the can for optimum signal. I'm building a little external timing ring to mount on the end of the can and might incorporate some caveman style mechanical, throttle linked, adjustable timing. I'll post some pics when I get to it. Unfortunately, like Jeremy, it will probably be a few weeks before I'm at that point due to other aspects of the project taking priority. Can't wait to see one running!
 
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