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PostPosted: Tue Jul 10, 2018 11:28 am 
Old School Hero
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https://www.ebay.co.uk/itm/Mountain-bik ... 1438.l2649

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PostPosted: Wed Jul 11, 2018 1:09 am 
retrobike rider / Gold Trader
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That's some pretty 'rustic' welding right there


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PostPosted: Wed Jul 11, 2018 6:05 am 
Gold Trader
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If that is a mk 4 then wtf does a mk 1,2 or 3 look like?!


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PostPosted: Wed Jul 11, 2018 8:32 am 
King of the Skip Monkeys
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As its aluminium, thats pretty normal welding.

Neat welds dont necessarily guarantee a good join with weld depth and penetration.

The 'neat' welding you often see on Taiwanese frames is done by a pre programmed pulse welder with the operator on frame number 1054 possibly even just welding one part together whilst the next operator welds another bit .


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PostPosted: Wed Jul 11, 2018 8:38 am 
retrobike rider / Gold Trader
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Thank heavens for Taiwanese pulse welders then


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PostPosted: Wed Jul 11, 2018 9:11 am 
King of the Skip Monkeys
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KeepItSteel wrote:
Thank heavens for Taiwanese pulse welders then


But thats missing the point entirely, the robotisized 'neat weld' doesnt guarantee a good join. Its the mechanical join between to bits of aluminium thats important. Steel is an entirely different material requiring different methods, materials and temperatures.

Have a look at these welds from a very famous frame builder

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And our very own danson67, 'Olympic' standard of welding:

https://www.draftwheelchairs.com/shop/p ... rettyPhoto

viewtopic.php?f=21&t=374292&hilit=gearbox

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PostPosted: Wed Jul 11, 2018 10:01 am 
retrobike rider / Gold Trader
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They're better looking welds than the subject frame. I'm not necessarily doubting the weld integrity, just the aesthetic.
I don't recall many Zaskar weld failures (I could be wrong), but the US 'handmade' LE frames were tidy.
Good enough for Hans, good enough for me, etc


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PostPosted: Wed Jul 11, 2018 5:47 pm 
King of the Skip Monkeys
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The welding on that frame is what it is and no different to my Zaskar or any other hand welded aluminium frame


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PostPosted: Wed Jul 11, 2018 7:17 pm 
retrobike rider / Gold Trader
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Oh c'mon now, you've already accepted that Zaskars have neater welding!
That frame above has messy welding, I really don't see an argument to be had.


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PostPosted: Wed Jul 11, 2018 8:01 pm 
King of the Skip Monkeys
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I have an aluminium welder standing who says its perfectly fine welding.


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