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Jonny
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Post by Jonny »

any chance you could send me a link to the tubing you used and a video on how you modified your lego with aluminium?
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Jonny
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Post by Jonny »

http://cgi.ebay.co.uk/4mm-OD-x-2-5mm-ID ... 439e3ddd11

found this on ebay, its rated to 250 psi.
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Andrew_Hibberd
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Post by Andrew_Hibberd »

The description has a link how to modify the valve for extra flow. I just cut out two bits of ali wider than the valve, put a 2mm hole in each corner. Then 3 6mm holes in the front for where the pipes go in. I was intending to put m2 bolts through each corner to hold it together but the ones i had were about 1mm too short.

Again i must stress the mod to the valve is really difficult and even with this change and a ton of silicone lubricant the RS valve is the better valve.

The piping looks good, just remember it won't be as flexable as the lego pipe.
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Jonny
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Post by Jonny »

thanks :D i'll have a go with the lego switch before i think about getting the rs valve. by the way what are you using to pump it up?
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Andrew_Hibberd
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Post by Andrew_Hibberd »

I used to use a bike pump, however i am lazy and now use a large 12V power supply and a car tyre inflator. I haven't tried this but you can modify an old inner tube valve to take a 4mm OD 2.5mm ID tube. I have been using a robart one valve #168. However i have just found this but you will need to check the pressure rating:

http://hobbycity.com/hobbycity/store/uh ... oduct=8369
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Jonny
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Post by Jonny »

thanks i'll try the bike tire thing soon. isn't shipping from hobbyking ridiculously expensive though?
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peterwaller
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Post by peterwaller »

When i had a play with pnuematics I built the none return valve into the tank using the old bicycle valve principle see:
http://i109.photobucket.com/albums/n66/ ... irtank.jpg
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Jonny
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Post by Jonny »

i took the valve out of the bike tyre and it seems to be working well :D gonna buy some lynx bullets for air tanks. i also finished the polycarb base.
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Andrew_Hibberd
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Post by Andrew_Hibberd »

Jonny are you comming to RFRC next weekend? Also could you post some pictures of your set up?
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Jonny
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Post by Jonny »

yep, i dunno if i'll have it ready for then but i'll definitely have my full body spinner mgm2 ready. i'll post some pictures later :)
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