Search found 118 matches

by fuzzy-hair-man
Thu, 12 Mar 2009, 17:41
Forum: General EV Discussion
Topic: Best car to convert
Replies: 8
Views: 942

Best car to convert

you might want to look at the GVM of the vehicles before choosing one , calculate if the vehicle can carry enough battery weight to give it decent range subtract the engine weight and gearbox weight too if you will use direct drive try to estimate the weights of radiator and other ICE components yo...
by fuzzy-hair-man
Wed, 11 Mar 2009, 19:30
Forum: Technical and conversion discussion
Topic: factory tacho interface ?
Replies: 10
Views: 1510

factory tacho interface ?

so i would need to have some way to count the rpm on the motor, times that number by 3, then send the signal to the tach ? sounds do-able...... the swift im looking at is a 3 cylinder, that's why the 3 pulses per rev. im basically looking to make the factory tach, count the rpm on the ADC motor. ju...
by fuzzy-hair-man
Wed, 11 Mar 2009, 19:15
Forum: Electric motors and controllers
Topic: Space and field vector control
Replies: 16
Views: 1880

Space and field vector control

Sensorless flux vector control is the ultimate for induction motors, it means the motor controller is controlling the size and direction (vector) of the magnetic flux in the stator/rotor/airgap of the motor, which gives you full control over every property you could want. Torque being the usual tar...
by fuzzy-hair-man
Wed, 11 Mar 2009, 18:21
Forum: Members Machines
Topic: Weber and Coulomb's MX-5
Replies: 1698
Views: 337486

Weber and Coulomb's MX-5

The steering rods are best removed from the knuckle with a firm hit with your standard claw hammer or gympie on the side of the taper. This just pops out the ball joint and arm. It's the easiest way by far. This works for both the steering arm attachment and the lower control arm to the wheel assem...
by fuzzy-hair-man
Tue, 10 Mar 2009, 19:55
Forum: Technical and conversion discussion
Topic: HV in conduit or not? or what?
Replies: 16
Views: 2729

HV in conduit or not? or what?

Am I correct in assuming that most of the PVC conduit and pack to controller or controller to motor wiring is going outside of the vehicle? If so I'd be a little concerned about how well the conduit will stand up to being hit by stones, my experience is that PVC doesn't stand many stone hits before ...
by fuzzy-hair-man
Fri, 06 Mar 2009, 21:58
Forum: EV Motoring
Topic: How to power cars: Assessing the Alternatives
Replies: 7
Views: 1346

How to power cars: Assessing the Alternatives

I saw this article and thought it was interesting and important to the issue of whether or not you charge your EV from Green energy. Also interesting from the point of view of PbA vrs LiPO4 batteries. Autospeed Article: Assessing the Alternatives Upshot for EVs was: EVs recharged from Coal powered p...
by fuzzy-hair-man
Fri, 06 Mar 2009, 20:06
Forum: General EV Discussion
Topic: E porsche with Analog Ac controller
Replies: 51
Views: 4991

E porsche with Analog Ac controller

back on topic, i wonder what BEV has to do special to use the AC24LS at 12'000rpm. or does it only matter when you are trying to do 12'000rpm *continuuos*. Matt Well the 12000rpm is mechanical it can't actually power itself that fast I think, it can do 11,000 powered, and from calculations I did wi...
by fuzzy-hair-man
Fri, 06 Mar 2009, 18:11
Forum: Electric motors and controllers
Topic: Max safe revs for ADC 8"?
Replies: 14
Views: 2507

Max safe revs for ADC 8"?

Hey Peter, you're not the only one who finds those DC power etc graphs confusing, they make bugger all sense to me. Image
by fuzzy-hair-man
Thu, 05 Mar 2009, 22:56
Forum: Electric motors and controllers
Topic: How Does Regeneration Work
Replies: 46
Views: 6447

How Does Regeneration Work

Ditto for Danfoss control i.e. current and torque limits for motor and generator. These are probably the same for most VFDs. If you are in speed mode and you reach a preset torque limit in say regen of say 60% then the ramp is simply automatically extended by the controller. No drama at all. Not ha...
by fuzzy-hair-man
Thu, 05 Mar 2009, 20:25
Forum: Electric motors and controllers
Topic: How Does Regeneration Work
Replies: 46
Views: 6447

How Does Regeneration Work

fuzzy hair man if you dont like the stalk on steering column , how about a ferrari style paddle on the steering wheel that you press with your thumb ? Hmmm, yes and no I want to be able to have regen on no matter what I'm doing with my hands so if I'm turning sharply, think a 2nd gear turn down a s...
by fuzzy-hair-man
Thu, 05 Mar 2009, 19:37
Forum: Electric motors and controllers
Topic: How Does Regeneration Work
Replies: 46
Views: 6447

How Does Regeneration Work

i think my personal choice would be the steering column fitted, fingertip , pressure sensitive regen lever fitted with a return spring ( it complies with the KISS principle ) I don't know that I'd like that because I figure it would be too easy to have to take you hand off the lever to do something...
by fuzzy-hair-man
Thu, 05 Mar 2009, 18:51
Forum: Electric motors and controllers
Topic: How Does Regeneration Work
Replies: 46
Views: 6447

How Does Regeneration Work

Yes, I still wanted to use a potentiometer off the brake pedal, but I wanted to use the brake light switch (I thought they were hydraulc) to allow for brake pad wear, which causes the point where brake effect starts (on the brake pedal pot) to vary. Otherwise, there might be a dead spot, or a sudde...
by fuzzy-hair-man
Wed, 04 Mar 2009, 19:41
Forum: Batteries, charging, management and monitoring
Topic: Cycle Life
Replies: 19
Views: 2280

Cycle Life

Do you know how long each of these batteries lasts in terms of years? I remember a post a while back by acmotor saying he was expecting to retire his TS pack because of age and not because of exceeding the number of cycles. (in the thread about green car incentives I think) It seems there are these ...
by fuzzy-hair-man
Tue, 03 Mar 2009, 18:13
Forum: Technical and conversion discussion
Topic: NCOP14 regulations, safety and revision
Replies: 143
Views: 15155

NCOP14 regulations, safety and revision

Thanks Woody, I hadn't seen one either. That cog doesn't look dis-similar to what Mal's electrolux uses for picking up motor RPMs, perhaps that cog could have a dual use? I can't see a reason the pawl needs to be inside a gearbox or with oil running round? http://forums.aeva.asn.au/smileys/smiley25....
by fuzzy-hair-man
Mon, 02 Mar 2009, 22:51
Forum: General EV Discussion
Topic: General Electrical Question
Replies: 108
Views: 7421

General Electrical Question

So figuring hey most of these alloy FWD gearbox / diffs would be struggling to weigh that (well probably around the same mark maybe a little heavier), but if I can get the benefit of gears for the same weight, why not take off in a lower gear getting better acceleration for the same motor power out...
by fuzzy-hair-man
Mon, 02 Mar 2009, 22:04
Forum: Technical and conversion discussion
Topic: NCOP14 regulations, safety and revision
Replies: 143
Views: 15155

NCOP14 regulations, safety and revision

i think the reason drum brakes are used as parking brakes is the diameter. a wide ,small diameter drum brake can be used for parking , whereas a disc brake would hang too low and interfere with the ground clearance under the car. I think Woody is right, if you look at the rear brakes on most / any ...
by fuzzy-hair-man
Thu, 26 Feb 2009, 18:41
Forum: General EV Discussion
Topic: EV run to Canberra.. from Perth?
Replies: 39
Views: 4321

EV run to Canberra.. from Perth?

I'm assuming there are towns every 80km or so between sydney and canberra? The issue might be from Goulburn to Canberra there's only really Collector in between and last time I went through Collector I could even find a petrol station. It's about 100 km from Goulburn to Canberra. There's a few wine...
by fuzzy-hair-man
Wed, 25 Feb 2009, 23:49
Forum: General EV Discussion
Topic: General Electrical Question
Replies: 108
Views: 7421

General Electrical Question

So I was thinking we are talking direct drive to diff here? no gearbox right? So going off the previous desired speed of 150km/hr (I think I remember seeing this somewhere) and assuming that we don't want to take for ever to get there... my calculations with my proposed mini (which I don't trust ent...
by fuzzy-hair-man
Wed, 25 Feb 2009, 20:44
Forum: General EV Discussion
Topic: General Electrical Question
Replies: 108
Views: 7421

General Electrical Question

What about using two (or even more like one for each wheel!!) AC24LS? 2 won't get the torque of the AC90 but they'll get pretty close to the same power and torque multiplication is what high diff or gearbox ratios are for!! The AC24LS weighs 40kg so compared to the AC90 you get just about the same p...
by fuzzy-hair-man
Tue, 24 Feb 2009, 19:53
Forum: General EV Discussion
Topic: Electric Beemer
Replies: 144
Views: 14571

Electric Beemer

Not sure of the arrangement you're describing. Does the rubber doughnut actually take the full torque? Can you point us to a photo, or post a sketch or describe in more detail? I think he means the flexible coupling in the image below (Richo's image from the direct drive thread): http://forums.aeva...
by fuzzy-hair-man
Mon, 23 Feb 2009, 20:36
Forum: Electric motors and controllers
Topic: Twin Impulse 9 motors
Replies: 27
Views: 6248

Twin Impulse 9 motors

Or join each motor independantly to its own pulley for redundancy. Chain drive gives you good control over the final drive ratio too. Of course! that's simpler and it would give you more freedom on where you wanted to put the diff and it's pulley. Snap a belt/chain and you can still get home http:/...
by fuzzy-hair-man
Mon, 23 Feb 2009, 20:11
Forum: Electric motors and controllers
Topic: Twin Impulse 9 motors
Replies: 27
Views: 6248

Twin Impulse 9 motors

I was then thinking a bit that there's no reason the pulleys have to go directly to the diff and as the mini is kind of small space was going to be at a premium especially in the front to back (from memory there's probably a bit of width to spare) if you wanted to get away without chopping up the re...
by fuzzy-hair-man
Mon, 23 Feb 2009, 18:54
Forum: Electric motors and controllers
Topic: Twin Impulse 9 motors
Replies: 27
Views: 6248

Twin Impulse 9 motors

But I could put an IRS diff in its normal RWD location with small Warp or Impulse motors side by side direct above the diff, bolt a cog on diff output flange, and just do a big triangle with a chain... Hmmm worth giving further thought for refinement. I was thinking about this again and I figure yo...
by fuzzy-hair-man
Thu, 19 Feb 2009, 22:28
Forum: Electric motors and controllers
Topic: Twin Impulse 9 motors
Replies: 27
Views: 6248

Twin Impulse 9 motors

Hey that's even better than the image I had in my mind, cool!!

How do the Warps etc deal with sideways loads on the bearings? Do I remember something about it not being great for them? Or does the plate you use to mount them together along with some big bearings deal with that issue?
by fuzzy-hair-man
Thu, 19 Feb 2009, 19:07
Forum: Electric motors and controllers
Topic: Twin Impulse 9 motors
Replies: 27
Views: 6248

Twin Impulse 9 motors

Several times I have come across threads outlining the benefits of running two motors, but figured two Warp 9’s might be a little over the top (only just). But if I used something like the TransWarp 7 and an inpulse 8 and joined them together like this http://www.evalbum.com/152 I could get better ...