Search found 170 matches

by Catavolt
Fri, 21 Jan 2011, 14:54
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

I was planning to use 4 x Double stack brushless Mars motors run at 144v from 2 x 600amp Kelly controllers, after reading through the rules of DLRA We can only use two motors max. What a pain. I have two 144v Kelly 600amp controllers on order for the TTXGP to use with the Enertrac Hub motors, so it ...
by Catavolt
Thu, 13 Jan 2011, 04:23
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11174

E-Formula Extreme - Sydney presentation

jonescg wrote: Any word on registrations for the Australian round yet??


No they're taking their time
by Catavolt
Wed, 12 Jan 2011, 23:05
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11174

E-Formula Extreme - Sydney presentation

http://www.prlog.org/11212188-enertrac-the-motorcycle-hub-motor-company-sponsors-team-catavolt-in-the-ttxgp-series.html Team Catavolt (see link below) an established racing group with electric land speed records to there credit has announced that EnerTrac Corp. will be the exclusive supplier of mot...
by Catavolt
Mon, 10 Jan 2011, 17:03
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

At what speed does the bike direct air around you?
by Catavolt
Fri, 07 Jan 2011, 03:22
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

It is my understanding that the frontal area is the size of the hole your car/bike cuts trough the air. So if you can measure the silhouet of you Car or bike that will be the frontal area. http://forums.aeva.asn.au/uploads/1288/carbike.jpg So if you break up your vehicle into boxed areas and add the...
by Catavolt
Wed, 05 Jan 2011, 04:50
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

I estimated 80% eff to the wheel with the dc motor.
The frontal area was pretty easy to measure on the 2010 bike its very brick like.
by Catavolt
Wed, 05 Jan 2011, 02:53
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

It was a back calculation from a couple of speed/power ratios.
I had power , frontal area and speed.
I used an air density of 1.2 .
by Catavolt
Tue, 04 Jan 2011, 20:28
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

Those numbers are battery output/motor input.
by Catavolt
Tue, 04 Jan 2011, 19:45
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

The drag of the bike we will be using is close to cd 0.4 with a frontal of 0.7m , last years Catavolt was 0.5 cd with a frontal of 0.8m . it needed 35kw average for 177kph and 48kw peak.
by Catavolt
Tue, 04 Jan 2011, 19:34
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30405

Voltron, the Electric RG!

Be mindful of how you wire the dual motors to use equal cable length to balance the load.
Image
by Catavolt
Tue, 04 Jan 2011, 19:00
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

Would you be allowed to do something like this? you would only need minimal steering in a straight line. The original plan was like this but its not allowed. http://forums.aeva.asn.au/uploads/1288/lightning-land-speed-racer.jpg This is allowed in the ttxgp but not for land speed racing , they call ...
by Catavolt
Wed, 29 Dec 2010, 15:52
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

The Australian land speed rules dont allow the front wheel to be covered past centre height. We also remove the front breaks on the bike to reduce a little friction. This is the most extream they allow below. http://s4.photobucket.com/albums/y108/dlra2/2010/speedweek20100310-066.jpg From http://www....
by Catavolt
Sun, 26 Dec 2010, 16:38
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

Your right Acmotor traction is the biggest problem. The Stock Hayabusa can achieve 200mph on the Road but on the salt it will only reach 195mph. To reach 200mph on the salt they add 30kg of lead to the swing arm. Here is some Hayabusa specs 130kw.     http://dixonarchive.com/hayabusa/performance1.htm
by Catavolt
Thu, 23 Dec 2010, 23:16
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11174

E-Formula Extreme - Sydney presentation

Yep not sure what class yet maybe the 7.5kwh what about you?
by Catavolt
Thu, 23 Dec 2010, 14:45
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

The frontal area is between .7 and .8m
The cd is around .4

Last time with the old bike we didnt accelerate hard until the 2.5mile marker.


by Catavolt
Wed, 22 Dec 2010, 20:08
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11174

E-Formula Extreme - Sydney presentation

                                           THE NEXT GENERATION OF MOTORSPORT ZERO CARBON CLEAN EMISSION RACING NEWS RELEASE: TTXGP – The eGrandPrix announce partnership with the Australian FX-Superbike Championship The Australian FX-Superbike Championship is a national series covering 6 rounds, star...
by Catavolt
Wed, 22 Dec 2010, 20:01
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

looks like its possible with AC induction if a controller can be found. The power wont be a problem with the batteries we can fit 300-400 headway/Lifetech LifePo4 style power cells in the bike and possibly more on the swing arm maybe a couple in the riders pocket http://forums.aeva.asn.au/smileys/sm...
by Catavolt
Wed, 22 Dec 2010, 16:39
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??


Another option could be 4 x double brushless Mars motors run at 144v with two Kelly controllers.
http://www.marselectricllc.com/me0913.html
by Catavolt
Wed, 22 Dec 2010, 01:11
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

The problem with the Wavesculptor controller is delivery before March might be dificult http://forums.aeva.asn.au/smileys/smiley19.gif . So might need to use cut down industrial controller for AC What about a drip proof open winding AC motor frame 22kw 4p 160 frame? Teco still sell them. For batteri...
by Catavolt
Tue, 21 Dec 2010, 18:28
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

There is no real weight limmit for the motor two 8inch motors would be around 90kg,or a 160 frame AC alloy would be around the same. The drive can be belt but I was thinking 520 chain. 320kph at 2-1 is around 6500rpm last year we ran 1.65-1 The approx torque at the wheel needed is 450nm 3200rpm
by Catavolt
Tue, 21 Dec 2010, 17:38
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16236

200mph what to use AC or DC??

What do you guys think should be used AC or DC? Time to build the new Catavolt with the aim of 200mph 320kph ish, We have a new bike frame the aim is to build a custom swing arm and mount a motor or two on the swing arm. eg two 8inch motors. So the bike revert back to somthing more usefull after the...
by Catavolt
Thu, 02 Dec 2010, 20:39
Forum: General EV Discussion
Topic: Plug in Hybrid
Replies: 3
Views: 722

Plug in Hybrid

http://www.environment.nsw.gov.au/cleancars/index.htm The NSW Government has comprehensive action plans in place to reduce greenhouse gas emissions and improve air quality from transport. These include a commitment to reduce air pollutants from motor vehicles through cleaner fuels and car technolog...
by Catavolt
Wed, 01 Dec 2010, 20:16
Forum: EV Motoring
Topic: Eday Electric Hatch
Replies: 5
Views: 1278

Eday Electric Hatch

by Catavolt
Wed, 01 Dec 2010, 20:02
Forum: Technical and conversion discussion
Topic: electric 40ft yacht - discussion and advice
Replies: 25
Views: 4119

electric 40ft yacht - discussion and advice

How much diesel would you need to carry in a 40ft'r. I would think that your 7-8 Hours on prop drive is at 1/2 power, is that fair enough? So if it consumes 10 litres of diesel in 1 hour you have a measurement of how much energy it takes to power the yacht by prop at cruising speed. Sorry, you'll n...
by Catavolt
Fri, 26 Nov 2010, 21:15
Forum: Members Machines
Topic: seligtype3 1969 Volkswagen Type 3
Replies: 194
Views: 40523

seligtype3 1969 Volkswagen Type 3

The power you get out of it really depends on the controller used and voltage you wind the motor for. eg: 100v rewind 350-400v controller around 50kw 230nm easily with good air flow. In theory +90kw peak.    The WEG alloy 9.2kw 132m is really a 11kw derated for Australian market. Teco also do a 10kw...