PML hi-pa drive motors

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Delinquent
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PML hi-pa drive motors

Postby Delinquent » Tue Sep 02, 2008 6:57 pm

Whilst at a family party at the weekend I got chatting to my uncle about my electric vehicle dreams, only to be informed that PML Flightlink are about a mile from his house! Unfortunately yet to find a relative who works there that could put a word in with the bosses to let a motor go to a MOP. :lol:

Getting home I did a bit more research, but have yet to come up with any real details on their motors - anyone know any of the specifics, construction etc? We were speculating on it just being a brushless adaptation of their printed motors but really were just plucking thoughts out the air.

NickJ
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Location: N Wales

Postby NickJ » Tue Sep 02, 2008 8:08 pm

All I know is they are "not cheap" I made an enquiry about 2 years ago and was quoted 9k a motor!

as to details, im not sure!

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ChrisB
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Postby ChrisB » Tue Sep 02, 2008 9:21 pm

.........and I'm not even sure if they actually work :cry:

I seem to remember they where having major control issues with these motors, think a member had some and they never ever worked from day one :cry:

I might be wrong :?

ChrisB
I reject reality and substitute my own !!!!!!

Delinquent
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Postby Delinquent » Wed Sep 03, 2008 8:25 am

well they have signed several large contracts so I'd be somewhat surprised (and disappointed!) if they don't work.

I can however well believe they would be very expensive! My interest was more from a technical side of how they have achieved the (claimed) figures - as an amateur motor builder I like seeing the new ways of doing things!

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Ellya
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Postby Ellya » Mon Nov 17, 2008 12:55 pm

I called PML to ask about their motors and if I could buy any. But it seems Volvo have moved in and contracts won't allow PML to sell their technology until the Volvo is in production.

I would love to hear otherwise, as I'm keen to buy some 300Kw motors for my project.

bobc
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Postby bobc » Mon Nov 17, 2008 6:35 pm

I've also asked & been told very silly prices indeed. I guess they must be some flavour of brushless DC. I notice siemens (I work for them) are also publicising a "in wheel" motor on their website - but it's all talk so far.
I've never been convinced by in-wheel motors - it must compromise unsprung weight. I think it's hipa who said "yes but you don't need brake rotors or calipers any more, just do the braking electrically"
yeah right...........

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Ellya
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Postby Ellya » Mon Nov 17, 2008 7:16 pm

I thought about the in-wheel motors for our competition car project, but as you said all that unsprung weight was a concern. Additionally for the kind of application I'm thinking about (rallying), I would have thought that anything close to or in the wheels is extremely vunerable to a huge amount of vibration and other hazards ...water, rocks, mud etc...

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qdos
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Postby qdos » Mon Nov 17, 2008 10:17 pm

Steve Green used some in his Jester and his C3 I think they proved to be rather temermental but he is still plaing around with some other Hub motors at the moment. Not sure if they are PML one's. I have to say I'm not at all convinced that a hub motor is the right place for a motor to be for exactly the same reasons Ellya.

Who was at Exeter over the weekend? I'm sure we must have chatted about this or is it just coincidence?

arsharpe
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Postby arsharpe » Sun Jul 19, 2009 3:10 pm

After talking with someone from Freecycle she works for a subsidiary of what was "PML Flightlink" and she new that one of the employees lives in my close.

Having just had a very interesting talk with this guy, he is happy to find answers to questions that people may have.

So I know that people's concerns are about unsprung weight and reliability, but if somone can reply with more specific questions then I can pass them onto this guy and hopefully get their view on things. It may also be a good way for the BVS to work with suppliers/manufacturers more (ChrisB I tried to get him to join, but he is not into forums).

Also after finding out sometime ago that the CEO of Flightlink was only 2 levels away from me (i.e. someone that I know knows someone that knows him) I am even more covinced that the 6 degrees of separation really does true.

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Night Train
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Postby Night Train » Sun Jul 19, 2009 4:33 pm

OT

arsharpe wrote:Also after finding out sometime ago that the CEO of Flightlink was only 2 levels away from me (i.e. someone that I know knows someone that knows him) I am even more covinced that the 6 degrees of separation really does true.

I'm only 5 degrees away from Willie Nelson.


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