Electric puma

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tom0
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Electric puma

Post by tom0 » Sun May 27, 2012 9:57 pm

Ok here's something. I'm doing an electric conversion.
It's been a few months since I got the car but I didn't want to say until I have something to show.

ok this is embarrassing, how do you load up pictures? :?
I got the motor and gearbox joined up and halfway putting it in the engine bay.
As soon as I can get the picture up I will show you. haha :grin:
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Re: Electric puma

Post by Dal » Sun May 27, 2012 10:00 pm

Interesting!

Have a look here as how to post pictures:

http://www.projectpuma.com/viewtopic.php?f=6&t=5496" onclick="window.open(this.href);return false;
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Re: Electric puma

Post by tom0 » Mon May 28, 2012 12:00 am

ok I think thats it.

Image

Image

Image

so what do you think? I know it looks small even small than the gearbox but don't be fooled I'm expecting it to 90mph. :lol:
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Re: Electric puma

Post by Flying Scotsman » Mon May 28, 2012 4:55 am

Now that is how to space save and weight strip!

But what an outside of the box thing to do! How will you charge the thing, that's always been my concern with electric cars, when you run out of juice, theres just not a plug there when you need it... lol.

There is also potential to make some sort of storage comparment in there. As some old cars used to have their spare wheel in the engine bay, you could have a comparment made for.... jump leads lol, red trianges, first aid kit etc etc and free up some space say in the boot.

It is not something i personally would do but good on you for being creative! The first HammerHeadi Eagle Thrust Puma lol
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Re: Electric puma

Post by PumaNoob » Tue May 29, 2012 5:48 pm

What an awesome project, what sort of power will that motor produce? I dont know how you thought of doing this, but im very impressed!!!

I know it defeats the object, but if you were to put a petrol powered generator in there, and plug it in while you drove, would that work?? I mean other then the fumes from the generator potentially poisoning you!! :lol:
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Re: Electric puma

Post by Gijs » Sat Oct 13, 2012 6:04 pm

Looks great, but what's the status does it work.?
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Re: Electric puma

Post by Blue3 » Sat Oct 13, 2012 6:49 pm

Cool idea but do you need a gearbox with an electric motor?

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Re: Electric puma

Post by Ian G » Sat Oct 13, 2012 7:24 pm

Probably easier to keep it while you have a diff and shafts in place.
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Re: Electric puma

Post by tom0 » Thu Nov 22, 2012 11:59 pm

Hi guy been on holiday almost forgot I posted this….opps

The batteries are very large; I’m planning to put them on top of the motor. A few in the front and the back, as you know the spear wheel is under the car so that gives me a flat floor to put them.

One of the reason why I like the puma is because its 4 seats, big boot for the batteries (they do take a lot of room), and it’s got very common parts that are sold today as there not made anymore.

It needs a gear box because it can only rev so high. Also a clutch, imagine doing an emergence stop. It would really damage the motor, not a lot of fun when it comes to repair, lol.

Try looking at http://www.avt.uk.com" onclick="window.open(this.href);return false; their customer service is fantastic, they offer as much help that I need. :grin:
They made the plate to bolt the two together. Can’t test it yet but I know it’s put together correctly.
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Re: Electric puma

Post by Sparx » Fri Nov 23, 2012 12:17 am

Wow, I must have missed this the first time around! Impressive!

How will you keep the batteries charged? You say they're quite big but do you know how long they will run for?
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Re: Electric puma

Post by lusid666 » Fri Nov 23, 2012 1:34 am

^up^
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Re: Electric puma

Post by Y0ungn1ck » Fri Nov 23, 2012 10:01 am

Very interesting project and quite off the wall.
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Re: Electric puma

Post by XIIVVX » Sat Nov 24, 2012 11:11 am

I am still currently training Nissan dealers on Leaf

I become more and more convinced that within ten years only a tiny minority of cars will be pure petrol/diesel.

Most will be pure EV, hybrids or range extenders.

Interested to watch this project develop

Leaf incidentally has no clutch, the wheels remain connected to the engine at all times, hence it can't be towed. But it does have regen braking. Emergency stops are no issue.
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Re: Electric puma

Post by zinc2000 » Sat Nov 24, 2012 11:27 pm

Interesting but....you now have no power steering, no brake servo, you have probably destroyed the front/rear weight balance which means the handling will be sh*t, not that it matters because you can't stop it anyway.

Plus if as you say the motor revs so high will that not then destroy the clutch every time you try to pull away or change gear.

Like I said, interesting but have to ask ..why?

BTW petrol engines will hopefully outlive most of the stupid hybrid/electric vehicles around at the moment or at least I sincerely hope they will.

Long live the "proper" engine, the bigger the better
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Re: Electric puma

Post by tom0 » Wed Nov 28, 2012 9:59 pm

I got a small 12v vacuum pump which I’m going to hoes to the servo.
The power steering, I’m hoping to have a manual. It depends how heavy it is. If so I have a backup, try looking up EPS, electric power steering. I only found that out after I started this project, so that’s a relief. Lol.

Forgot to say, made a mistake its max rpm is 3000. Is that too low for the gearbox? Not sure :?

You are right hybrids are stupid and very inefficient. If you are using the engine or the motor you are always carrying something you’re not using. One or the other not both. Lol
Why well, the performance will be the same (I checked that beforehand).

But the costs are great. Road tax is determined by your CO2 emissions and as there are none… so :grin:
You know the g-wiz (rubbish car if you can call it a car). But there say 1 pence per mile and that isn’t a joke!, because petrol is pretty expensive now.
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Re: Electric puma

Post by Ginger Tom » Wed Nov 28, 2012 10:19 pm

With max revs at 3000rpm would you not be better off going for a diesel gearbox, say one out of a 1.8 diesel fiesta?

I would also gear it up with bigger rolling circumference wheels otherwise you'll top out at about 55/60mph unless you don't mind dordeling down the motorway.
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Re: Electric puma

Post by PumaJay » Wed Nov 28, 2012 10:51 pm

oh no... any eco puma!! i might leave mine running over night to make up for the lack of global warming coming out the back of this one!!

Jokes aside, really impressed with that, very interesting project
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Re: Electric puma

Post by Blue3 » Wed Nov 28, 2012 11:24 pm

Dont worry Jay, my F3 puma will compensate, although have a similar power steering issue, so looking at using a saxo vtr electric power steering pump
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Re: Electric puma

Post by tom0 » Thu Nov 29, 2012 12:51 am

Well look at it this way, you won’t feel as guilty when you’re out on a track day. so it equals out :-)

That’s a good point I will look into it. I will have a closer looking about the gear box. thanks you may have saved me sometime in getting this thing on the road.
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Re: Electric puma

Post by mix2000 » Thu Nov 29, 2012 1:11 am

Does the weight of the batteries offset the weight of the smaller motor and the lack of petrol.
What about battery safety in an impact? do you have some sort of bulkhead/firewall container designed?
(It'd be like the alien spitting on you in an impact :shock: )
zinc2000 wrote: BTW petrol engines will hopefully outlive most of the stupid hybrid/electric vehicles around at the moment or at least I sincerely hope they will.

Long live the "proper" engine, the bigger the better
Unfortunately i think we'll all be doing it some day and have speakers out the front, pumping out the original engine sounds, synced to the ancient gearbox. :-D
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Re: Electric puma

Post by XIIVVX » Thu Nov 29, 2012 11:39 am

So much to comment on here.

Make no mistake, electric cars in one form or another are the future and no amount of whining about 'Long live petrol cars' will ever change that.

The batteries on the Leaf (which I have been working on) are all contained below floor level and within the wheelbase, so are largely protected in the event of impact, certainly more effectively that your flimsy metal box containing 50 litres of highly volatile liquid hung out behind the rear axle. Evcen then they are a minimal fire risk and have a lot of RCD-type circuitry to isolate them in the event of any incident

This production car has no need of a gearbox, and the car delivers maximum torque from a standstill; in city motoring I'd back a Leaf at any short distance traffic light GP.

The weight being low down it handles pretty well for a C-Segment shopping trolley and, trust me, they are an absolute delight to drive. The total silence is addictive.

7 hours overnight to charge enough for 100 miles + (Say £2.30), or 30 minutes on a rapid charger to give you more than 80 miles.

No VED, no congestion charge, no benefit in kind, no need ever to visit a filling station ever again, the government gives you £5,000 back.

The point is this is just the beginning. Toyota are already looking at adding hybrid to the GT86, the Tesla 'Lotus' is a brilliant, if awfully expensive car. Where powertrains will be within ten years we can only guess. But trust me it will be interesting and a lot of fun.
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Re: Electric puma

Post by PumaJay » Thu Nov 29, 2012 4:48 pm

i can understand the concept of the electric car being "the future" but what happens if in an accident the batterys split and spill? its not environmently friendly battery acid, for me the future is hydrogen fuel cell cars, the most abundent gas we have, no need for over night charging and a much better range than batterys.
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Re: Electric puma

Post by XIIVVX » Thu Nov 29, 2012 7:06 pm

Eh?

Acid?

They are Lithium Ion and are very well contained. What happens if the sump of a petrol car cracks? Non-environmentally friendly oil everywhere.

Hydrogen is still a long, long way off, if ever. The infrastructure to support it will be massively expensive since it is stored at low temperatures and under enormous pressures. You can't just fill up a normal service station underground tank with the stuff and dispense it with a nozzle. We'll are most likely to see it first in fleet use, where the transport department builds its own storage.

And once battery range reaches (say) 250 miles which would you rather do, seek out a filling station or just plug your car in at home overnight?
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Re: Electric puma

Post by Ginger Tom » Thu Nov 29, 2012 7:13 pm

Once they have the range to that sort of mileage it would be a viable option as a family car but while they are still around the 100 mile mark there really is no point, get a small diesel, my mk2 Ka would do a minimum of 350 mile to a tank with my lead foot. I once got a tank to last me a month of to and from work, 40mile round trip 5 days a week for four weeks, just shy of 800 miles, not bad on £35
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Re: Electric puma

Post by XIIVVX » Thu Nov 29, 2012 7:22 pm

Ginger Tom wrote:... but while they are still around the 100 mile mark there really is no point, get a small diesel,
For you maybe, they are certainly not for everybody. But for the user doing a limited mileage, mostly around town and suburbs it makes far better sense as they won't be servicing and eventually replacing the particulate filter at a cost of several hundred quid each time as they would on a modern diesel.

And, as I keep saying - they are a much nicer drive.
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