Plug in hybrid project

[Carlos]

[IMG:640:338]http://img253.imageshack.us/img253/6282 ... 488vy2.jpg[/img]

[checkered]

Hehe, I'll stop

hijacking your thread soon, tomislavp4, but I couldn't resist posting about the crazier side of EVs as well. After all, not everything motivational has to be entirely sane, reasonable or logical ... right? Anyway, here's one prominent outfit sponsored (I think) by A123:



It's the "KillaCycle", doing 0 - 60mph in ~0.9s ... mind you, I've seen a video of a guy getting hurt while doing a burnout with the thing on a sidewalk, a sort of a promo stunt (after commenting to the TV crew that people do get killed on drag motorcycles ... note to self, avoid "famous last words comments" if possible). It sounds incredible, like a hundred belt sanders being revved together. Then there's this bunch:



Don't know exactly what they're doing (and by the look of things they might be wondering about that as well ... or perhaps they're all about "just not giving a damn"). Looks fun though. Sponsored by big names and apparently have done some sort of a pilot for Discovery channel. Killacycle and SuckAmps led me on to this site:



The National Electric Drag Racing Association and I also found an edgy EV publication, very much reminiscent of similar magazines from ICE's heyday (circa 1950 or so):



Btw, nowadays the hottest chicks warm up to EVs and guys who buld and drive them. How shocking. I was left wondering about the photographers' name, though ... (Advisory: If you dislike scantily clad people do not open this link):

Electrifying times, Gaylord Hill Heats Up EVs - link

The KillaCycle, SuckAmps and NEDRA websites sport a guite a number of interesting links, so they're worth exploring. I didn't deem it necessary to reproduce those lists here.

[tomislavp4]

First, thanks for the links

Now, I´m working on the suspension and I really love the Dax CC&AR system, which some of you talked about in the forum... Anyway I was thinking where to put the shocks&all that and I came to an idea-you could use the "things" that the upper A arm and the CC&AR system´s linkages are conected to as a pushrod and connect the shocks to it

like this



You´ll need to make the "things" a bit longer so you get more movement at the bottom where the socks are attached

[Carlos]

tomislavp4 - Besides my original posts on the Dax suspension, I am interested in another system called Link X which minimizes space requirements as it does not use transverse rods across the chassis, but controls roll because of the arrangement of the suspension arms. I was under the impression that your suspension design was finalized, but I can see that you are still exploring options. I remember your interest in the sliding pillar suspension, which is very compact which also suggests a trailing link suspension, like the VW Beetle, could be considered. Currently I see the potential roll control of the Dax system attracts your attention.

Consider the Link X suspension system:
http://findarticles.com/p/articles/mi_m ... i_85009261
With research you should be able to locate the patent which includes illustrations.

[Carlos]

This article describes the Link X suspension much better, the current owners of the original company and patents improved the system. Metaldyne have not found a manufacturer interested in pursuing the idea,they may be willing to provide you with details and diagrams, always good to ask questions, even corporations can be very helpful and interested. There was a video on Youtube that featured the Link X suspension, Car and Driver and Road and track also covered the technology when it was first introduced in 2001. I've just done some sketches of a 'jointed' double wishbone zero camber change suspension, that may just also be anti roll without the use of a sway bar. It might just work. I'll post it if when I learn a little more about scanning and graphics programs. Must be the late hour or the milk and cookies I had earlier


http://www.autofieldguide.com/articles/030705.html

The system was originally designed to defeat rollover characteristics of hight center of gravity SUV's defeating body roll and camber change, this article is about the driving impressions with the suspension fitted to a large Ford SUV, although I have always felt it would work well as a high performance race car suspension, actually the Youtube video was of this Ford SUV.

http://www.autofieldguide.com/driven/0602dri05.html

[tomislavp4]

No, the suspension is still far from completed

We found a few cons on the sliding pilar suspension which proved it´s not that briliant so I went for the double whishbones, it is after all the best racing suspension man can get, not so space efficient though.

Then I found your post about the dax, and I found it good enough, I was going to make double whishbones with pushrod activated dumpers + the dax system. Yesterday I was working on the geometry and I found out that I don´t really need the pushrod beacuse it´s allready there I don´t need the space that the dax linkages take so much, I need the space under them so it´s quite good solution, I think

[tomislavp4]

Time to bring life back to this tread, this time as a school project!

Here in Sweden we have something that would be roughly translated to "Project work" that takes place in the last year of the high school education. Every student should put atleast 100 hour of work in it but I'm willing to put twice as much The problem is, I'm studying Industrial Design and the teachers are not that qualified to judge my work so I would like to ask you guys to give input (if you can and are willing off course) so that they can be sure that I know what I'm doing and grade me accordingly. I'm not asking for much, just see if the numbers I get are plausible...I would really appreciate it

[tomislavp4]

This is the performance graphs of the motor:


and the weight spreadsheet:

[tomislavp4]

Based on 0,38 CdA, mass of 1175,55kg and a rolling resistance of 173N I got: max speed something over 260 but it's going to be limited to 250, 0-100 time is 3,12. 0-200 comes in 11,8 and 0-250 in 19,17 seconds. Compared to others:

[tomislavp4]

First graph shows range at certain speed while the second the power needed to travel at certain speed, both are based on 0.38CdA, 1175,55kg, rolling resistance of 173N and a usable battery capacity of 25,7kWh