Bob C
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| posted on 8/12/07 at 03:48 PM |
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off - topic; greenpower car
Just thought I'd post some pics as they of marginally related interest. The greenpower race series is an electric car racing challenge for year
7-11s & they have a national final at goodwood in october. Last year we did OK - 5th place - next year we want to win....
Anyway here is the body plug in construction - I designed the form in solidworks & produced dxf drawings of the body cross section profiles. These
were cut out of MDF by a mate with a home-made CNC router & we started filling in the gaps with foam last week.
1st here's a render of the car from solidworks
 
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Bob C
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| posted on 8/12/07 at 03:56 PM |
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Andy's home- made router
 
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Bob C
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| posted on 8/12/07 at 03:58 PM |
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The assembled mdf profiles
 
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I love speed :-P
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| posted on 8/12/07 at 04:38 PM |
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Very cool, I used to love Green power when I was at school, great fun going around school in a battery powered go kart Keep us all Updated
Don't Steal
The Government doesn’t like the competition
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v8kid
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| posted on 8/12/07 at 04:40 PM |
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Blimey those 7-11 year olds are bright - most can't count let alone build a CNC router
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Confused but excited.
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| posted on 8/12/07 at 05:30 PM |
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When are we going to see"Build you own CNC......." plans posted on here?
I am sure some on here would like one.
Tell them about the bent treacle edges!
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Bob C
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| posted on 8/12/07 at 09:23 PM |
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You can see how he made it using linear bearings, leadscrews & stepper motors. It has microswitches to set zeros in x & y - he does the z
manually (as it changes when you swap the tool).
The stepper motor drives are controlledby RS232 from his laptop running some software he bought for 80 odd notes.
Superb quality output & free for the school (I'm always amazed what the girls get given).
The router part is just the motor off a DIY router/rebater thing. It cut really fast actually - looked like ~1"/s with a 3mm router in 6mm
MDF
Bob
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RazMan
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| posted on 9/12/07 at 01:19 AM |
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quote:
Originally posted by Confused but excited.
When are we going to see"Build you own CNC......." plans posted on here?
I am sure some on here would like one.
I second that! 
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Bob C
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| posted on 31/3/08 at 09:23 PM |
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Some progress on the buck - hoping this will be done in the next few days.
Learned that the blue builders foam gets dissolved by EVERYTHING.
And high build cellulose primer is loverly stuff to sand.....
more info on http://www.cauc.co.uk
[Edited on 31/3/08 by Bob C]
 
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Benonymous
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| posted on 1/4/08 at 08:06 AM |
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Excellent work! Can't wait to see more
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coozer
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| posted on 3/4/08 at 03:37 PM |
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Oh dear, takes me back to the 70's when it was the Shell Challenge.
Super light spaceframe made out of 6~10mm tube powered by a Honda C50 engine.
How times change
Steve
1972 V8 Jago
1980 Z750
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Bob C
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| posted on 30/5/08 at 08:39 PM |
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progress - we've made the moulds & started laying up the body panels.
The stiffening ribs on the moulds were 2cm strips of scrap PCB stuck on the outside with hot melt glue & then glassed over. That little idea
worked extremely well. On these pictures a layer of gelcoat has gone on & been stabilised by glass mat tissue. Next a couple of layers of carbon
fibre weave (Alan loves this stuff).
 
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Bob C
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| posted on 30/5/08 at 08:41 PM |
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that was the back of the car
This is the top with a couple of layers of carbon on
 
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Bob C
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| posted on 6/6/08 at 02:54 PM |
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First body part popped very nicely out of the mould last night - really pleased with the result: everything fits rather nicely!
Incidentally the school's greenpower website
http://www.cauc.co.uk
has a colour "poll" going on at the moment (you have to scroll down to the bottom of the page) & I'd appreciate anybody who can be
bothered voting for a light colour - at the moment dark green & black are winning & the car would be invisible (being small & faster than
everything else on the track - I hope) So I'd appreciate any votes for yellow, orange or even pink!
[Edited on 6/6/08 by Bob C]
[Edited on 6/6/08 by Bob C]
 
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Bob C
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| posted on 16/7/08 at 10:02 PM |
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More progress - Finished car had its first race today, at Croft. This car came 2nd, only beaten by....... our other car ;^)
Good days racing & this car will speed up a lot with some shakedown miles and proper instruments (it raced with a bike speedo I nicked off my own
bike this morning)
 
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Bob C
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| posted on 16/7/08 at 10:04 PM |
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One more: the car needs a paint job too.... Pleased (& smug) at the moment!
 
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Benonymous
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| posted on 20/7/08 at 09:59 AM |
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Great!
Good to see your creation on the track! Looks great and very close t the concept render.
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Bob C
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| posted on 11/9/08 at 10:59 PM |
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now painted, won its 2nd race by 3.5 laps.
Yes that's gulf racing livery. There's a little burr walnut dashboard too.......
 
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Bob C
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| posted on 20/10/08 at 08:26 PM |
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This car just won the 2008 Greenpower national final.
I can't tell you what an absolutely brilliant day the team had yesterday. Going well is good; winning is brilliant, but winning the national
final is just unbelievable; the girls will remember that day for ever!
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