Please can you tell me if this Subaru ebike is worth buying?
Has anyone heard of or tried Toseven mid drive?
- Thread starter Domm
- Start date
are you still hoping to get a reply? how long has everyone been ignoring you for now
give me one to test and ill get a controller 50A
www.ebikemodshed.co.uk
or
if it does not explode its not going fast enough
spin to win 1000mph
Phaserunner MT Controller V3
Introduction The Phaserunner is a compact state-of-the-art field oriented motor controller (FOC) from Grin Technologies based around the sophisticated control electronics from Accelerated Systems Inc. of Waterloo. It is ideally suited for running brushless motors for electric vehicles in the...
www.ebikemodshed.co.uk
or
if it does not explode its not going fast enough
spin to win 1000mph
Standard cheapo Chinese bike with terrible v-brakes, front motor and Subaru written on it. You could buy one for around £800 and put your own Suburu or even Rolls Royce stickers on it. that's half the cost.Please can you tell me if this Subaru ebike is worth buying?
This one would be better quality with disk brakes and rear motor- KT controller too.
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Subaru Sticker by chipsar0y
Gaming parody for Subaru! • Millions of unique designs by independent artists. Find your thing.
www.redbubble.com
oil cooled as non conductive you add a rad and a pump and there you go
Thank you @saneagle, your knowledge about ebikes really is quite encyclopedic! And always a pleasure to read.Standard cheapo Chinese bike with terrible v-brakes, front motor and Subaru written on it. You could buy one for around £800 and put your own Suburu or even Rolls Royce stickers on it. that's half the cost.
This one would be better quality with disk brakes and rear motor- KT controller too.
Qivelo Fitifito CT28 Luxury electric ladies bike - white / Silver Brand New | eBay
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Subaru Sticker by chipsar0y
Gaming parody for Subaru! • Millions of unique designs by independent artists. Find your thing.
I am not an expert but here is your competition, circa 5 years ago:
Note how short the rotor shaft is?
The rotor shaft gets a lot of stress, you want it as short as possible and the ball bearings on at both ends as big as possible to spread the stress and wear.
the winding:
They use flat wire, machine wound.
The permanent magnets:
they form a perfect circle.
Yours: the motor shaft is too long, the coils are wound by hand, the magnets don't look straight.
Your DM01 is better targeted. You should make a 250W version of it.
Your DM02 repeats the same mistakes found in the TSDZ2, so adding fins, a fan or thermal compound will help but they are wasted opportunities.
Im not sure if you are trying to pretend you did notice now but from what you wrote before its clear you hadn't
Where is that compound going to go?
This is a render you know?I am not an expert but here is your competition, circa 5 years ago:
Note how short the rotor shaft is?
The rotor shaft gets a lot of stress, you want it as short as possible and the ball bearings on at both ends as big as possible to spread the stress and wear.
the winding:
They use flat wire, machine wound.
The permanent magnets:
they form a perfect circle.
Yours: the motor shaft is too long, the coils are wound by hand, the magnets don't look straight.
So that’s a DIY install motor? Must be if it’s the competition.I am not an expert but here is your competition, circa 5 years ago:
Note how short the rotor shaft is?
The rotor shaft gets a lot of stress, you want it as short as possible and the ball bearings on at both ends as big as possible to spread the stress and wear.
the winding:
They use flat wire, machine wound.
The permanent magnets:
they form a perfect circle.
Yours: the motor shaft is too long, the coils are wound by hand, the magnets don't look straight.
Oh hang on… it’s not.
Have you actually opened up a TDSZ2? Given you claimed it didn't have a cadence sensor and also your demonstrated complete lack of understanding around BLDC motor control, I wouldn’t be taking your comments too seriously.
I bought a 36V TSDZ2 about 5 years ago for testing. I opened it once, when it was brand new to take a look. I liked it, so I imported it directly from Tongsheng but asked them for their 48V 250W version.
As it was a brand new motor, I wasn't fault finding and did not notice the PAS sensor on the controller.
It was a mistake which I acknowledged straightaway as soon as you pointed that out.
How much more do I have to grovel for your forgiveness?
How about your expert opinion on things to improve on the TSDZ2?
Last edited:
It can't be long before someone uploads photos of a complete diassembly.
Let's hope the rest isn't short-lived trash.
Is this going to be a size competition?
If it is, then you have already won.
I have never been attracted by the OSF firmware because Tongsheng replace any faulty parts under guarantee. So when you told me where the code for the PAS is, I followed up your link and start reading it on my phone while waiting at my doctors surgery. That was the first time I looked at emmebrusa's code. Later, another member posted a link to the field weakening code specifically. I read it looking for a solution to his problem with the TSDZ2, that is at constant cadence, the torque is reduced with battery voltage.
It's not a new issue but none of my other customers mentioned it to me.
I made a suggestion how to amend the code to vary the field weakening angle to compensate for voltage drop.
Does it merit your sarcasm in telling me that I demonstrated complete lack of understanding? Would you like to post your code here to address his issue?
Hopefully will have one soon.
Not quite sure how that is relevant to my comment though. Seems as though
It’s not about grovelling for forgiveness. There were multiple points that you were completely wrong about, and most pointed towards someone with barely any understanding of how modern BLDC motor control works. From a crank sensor being used for motor advance angle, to the TDSZ2 torque sensor being a coil (hint: it’s actually a hall sensor). So it’s worth mentioning to all that your critique is not based on someone with solid engineering knowledge in this field.
For things to improve this would be my top four -
Heat management between stator and case
A proper FOC controller.
Less play in the axle / better and smoother bearings.
A more consistent torque sensor that doesn’t have wildly variable values between units.
Notice how a lot of these are things that To7 have claimed to have addressed.
I personally can’t wait to use one and see if they have.
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