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Topic ClosedA question on multitrack racing and records

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jes@gcre View Drop Down
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Direct Link To This Post Posted: 22 April 2009 at 9:43am
Originally posted by LeeW LeeW wrote:

How narrow is very narrow? I'm thinking of building a fairing about 420mm wide at widest point.

It's gonna be made from some cheap 1018 ERW steel, thus rather heavy.
 
If it is for PC0 then it only has to fit you so you can go as narrow as you like provided you are comfortable.
 
Like I said somewhere before, if you are building a car for a team then you have to get your biggest driver, your smallest driver and probably several people you don't even know yet to pedal it over the course of the next few years and they have to be comfortable and like it enough to want to come back!
 
Therefore there are many compromises that might have to be made because, while the human body is wonderfully adaptable, you are asking someone to spend 4 hours in it and cover 80 or so miles during that time whilst feeling able to throw it round corners into the bargain.
 
I rattle around no end in the fairing on our cars this season but that it because it was designed for a non-existent hybrid person with Matt's legs, Chris' back, Tom's rugby playing broad shoulders and Dave's huge butt!
 
And don't worry about cheap metal - most of what we use on pedal cars is carefully selected for it's cheapness and hard wearing qualities!


Edited by jes@gcre - 22 April 2009 at 9:45am
Racing is life...
Anything which happens before or afterwards is just standing around waiting to race....
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Neil View Drop Down
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Direct Link To This Post Posted: 22 April 2009 at 1:37pm
Originally posted by LeeW LeeW wrote:

I may even try racing it at a BPCC event, if I can bring myself to cut off 470mm of the tail, maybe a 24hr one in PC0
 
Entries need to be in shortly for this years 24hr race if you want to register. Using the wonders of technology you can even register and pay for it online here
 
Neil
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AlanGoodman View Drop Down
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Direct Link To This Post Posted: 22 April 2009 at 3:04pm
Go for it Lee... Thumbs Up

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LeeW View Drop Down
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Direct Link To This Post Posted: 22 April 2009 at 10:31pm
It won't be ready for this year... I've just about mastered the tig welder. I actually tigged two round tubes together today at the collage and the guy there said it looked pritty good although it had some minor undercut. For the next 10 or so weeks I can use the tig at the collage but then it shuts for the summer thus I will prob go out and buy my own tig, my mig seems crap in comparison and never could get a decent looking weld.

Edited by LeeW - 22 April 2009 at 10:33pm
Current fleet: Milan SL MK2 #027, Fujin SL II, Beany!

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Neil View Drop Down
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Direct Link To This Post Posted: 23 April 2009 at 7:48am
Dont underestimate the use of brazing - especially for thin walled tubing
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Direct Link To This Post Posted: 23 April 2009 at 2:18pm
Originally posted by LeeW LeeW wrote:

It won't be ready for this year... I've just about mastered the tig welder. I actually tigged two round tubes together today at the collage and the guy there said it looked pritty good although it had some minor undercut. For the next 10 or so weeks I can use the tig at the collage but then it shuts for the summer thus I will prob go out and buy my own tig, my mig seems crap in comparison and never could get a decent looking weld.
 
lee
 
Are you on a proper course ? our local college don't seem to be interested in anything but a full  blown CofG course at tremendous cost.
 
regards paul
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25hz View Drop Down
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Direct Link To This Post Posted: 23 April 2009 at 8:03pm
Originally posted by LeeW LeeW wrote:

It won't be ready for this year... I've just about mastered the tig welder. I actually tigged two round tubes together today at the collage and the guy there said it looked pritty good although it had some minor undercut. For the next 10 or so weeks I can use the tig at the collage but then it shuts for the summer thus I will prob go out and buy my own tig, my mig seems crap in comparison and never could get a decent looking weld.
 
If you can hook gas to it, do it.  It makes a big difference on the quality, look and ease of making the bead.  It'll never look like a TIG bead, but it can easily look like a nice, small ARC bead.  Even for thin walled tubing, just stitch weld it.  Get the torch where you want it, squeeze the trigger like you're firing a pistol (and release the trigger then), move a little along the joint, before the glow is gone "shoot" it again, repeat.  Very effective at hole and gap filling and welding thin material where heat build-up causes blow throughs.
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LeeW View Drop Down
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Direct Link To This Post Posted: 27 May 2009 at 9:56pm
Yes, I did a City and guilds course, 3 hours per week for 36 weeks. I actually did two courses in one year as I was a quick learner. C&G mig level 1 and C&G tig level 1. I had my last session yesterday but they have ended the course early (was supposed to be end of june) as basically I was the only guy going in, everyone else had finished the course (I'd finished the actual course a few weeks back but was still going for practising/playing around). Anyway My welds are now looking fairly good. I've almost finished making some landing gear for the fish, I will post pictures when done. I've just gone and spent a small fortune on my very own DC/AC, hf start tig welder (yep, gonna give AL a try sometime). Delivery next week.

Anyone want to buy a Clarke 135TE mig welder?

Edited by LeeW - 27 May 2009 at 9:57pm
Current fleet: Milan SL MK2 #027, Fujin SL II, Beany!

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stormbird View Drop Down
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Direct Link To This Post Posted: 28 May 2009 at 6:44am
Lee

I wondered if I cut some of my steel whether they would let me weld my own stuff on the course or whether that would disrupt the class to much ?

After all those hours your MIG was still not very good ?

I have done some gas welding in the past so really TIG is closer to what I could do then than MIG but to be honest it was 25 years ago !

All I remember was always being fascinated with the weld pool and I could not keep my eyes off it.

regards Paul
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LeeW View Drop Down
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Direct Link To This Post Posted: 28 May 2009 at 7:35am
It most likely depends on the collage. I was able to make some handlebars and a new, longer swingarm for the fish.
I could never get decent looking welds with mig, not sure if it was me or the machine. Apparently I'm a bit of a perfectionist though.
Country to what many say, I found tig easier to master than mig. Just a shame that a proper tig welder is so expensive.

Edited by LeeW - 28 May 2009 at 7:39am
Current fleet: Milan SL MK2 #027, Fujin SL II, Beany!

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