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Messages - bastens_com

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Zero Motorcycles Forum | 2013+ / Re: feedback requested for a 2019 75-7R motor running temperature range ??

« on: February 26, 2022, 05:03:26 AM »

Quote from: TheRan on February 26, 2022, 04:56:21 AM

My bike with a 75-5 will limit power if the motor temp goes a little over 120°C, and it's one of the 11kW models which supposedly have a lower temp limit. So, seeing 160°C from a 75-7 doesn't sound too ridiculous. I do wonder if the temp reading on my bike is accurate though, when the bike is first turned on the motor temp reading is always like 10°C higher than ambient.

I have found that both of my motors read 8C high as well, I was thinking of calibrating it out. Though I only know this because I was able to saturate the motor on various temperature days and from 0C to 20C it has been off by 8C constantly.

Your reply is surprising in that I was thinking anything over 100C is too hot. It is VERY helpful to know that it seems 100C - 130C is normal operating temperatures.

Thank you for taking the time to reply!

Zero Motorcycles Forum | 2013+ / feedback requested for a 2019 75-7R motor running temperature range ??

« on: February 26, 2022, 04:45:11 AM »

I am looking to you all for some feedback on motor temperatures. I don't have a motorcycle but I do have two Zero 75-7R 2019 motors that I installed in a Polaris RZR and a Polaris Outlaw. My builds are complete and I have been riding them. Since I got the motors used I don't have the original DCF files from Zero so I have no guide as to what to set the overheat limits to. I did find a spec that said the motors can run up to 160 C !! ... that seem very high and I am sure I should be running them at that high of temperatures long. This leads me to my question ...

What are real world motor temperatures are you all seeing?

OR

Does anyone have an original DCF file intended for a Zero 75-7R motor so I can see what the factory setting should be?

You might be asking yourself how am I getting the motor so hot, it shouldn't be an issue right? With my Outlaw it doesn't seem to be but with the RZR it is 1600lbs so when set the torque to 150NM it will heat up fast! I need to limit the torque so it doesn't overheat but what should the goal temperature range be?

Thanks all for your help!

Cheers,
Patrick

P.S. Here is a link to the build pictures on facebook

Home Brew / Re: matching a Zero motor to a Sevcon controller

« on: August 27, 2021, 08:50:38 PM »

Thank you NEW2elec & Demoni for the info! I will check it out.

Some info that might help others looking for guidance:
In regards to using zero for a SXS project they are not performance machines. It is ok but if you are use to a 1000 than you will be disappointed. My ME1507 performs exactly like a 800 which is the same horse power range of 50 hp ... so it is what I expected. I am hopping the 75-7 hp boost to 60+hp would be enough to give it just enough to make it more of a performance machine. If I would build it again I would shoot for a 100ph electric motor range. I would use a hyper9 type motor because they can be purchased by the end user. The down side is they are 120lbs and require a lot more electrical power so high voltage and Amps would be needed which would exceed the capability of my current battery pack.

Cheers!

Home Brew / matching a Zero motor to a Sevcon controller

« on: August 27, 2021, 12:34:43 AM »

Hello all, I am hoping to find someone that can give me some background info. I have a SXS (side-by-side) that I converted to electric using a ME1507 and Sevcon controller. I bought it pre-matched but I would like a little more horsepower. So I am thinking if I get a Zero 75-7 motor I should be able to pair it with my SEVCON Gen4 550A? Before I buy one can someone tell me if I am understanding the difference between matching a ME1507 and a Zero 75-7 motor?

I ask this because if they calibrate the sensor during manufacturing that it wouldn't need to be matched rather just the right setting being known, is this me being ignorant?

What if I buy a Zero motor that is already matched with a SEVCON can I simply take the settings motor sensor settings and transfer it to my SEVCON?

I have the IXXAT adapter and software. I am getting familiar with it and having fun tweaking my ME1507. That being said I have never "matched" a motor to a controller.

Thanks in advanced for your help!

Cheers,
Pat

Some pics of my project