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 Post subject: Subframe Weight
PostPosted: Mon Jun 12, 2006 4:28 pm 
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848cc
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Joined: Wed Nov 23, 2005 12:40 pm
Posts: 398
Location: Bacchus Marsh, Victoria
Just wondering whether anyone knows what their own subframe weighs and what sort of material they used.

And also what the standard mini subframes weighs?


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PostPosted: Mon Jun 12, 2006 5:25 pm 
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998cc
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Joined: Wed Aug 18, 2004 2:41 pm
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Location: ACT
I would say mine weighed a approximately 30kgs (very rough estimate). Not sure what the original weighed but I believe, mine was probably lighter after the conversion. So long ago can't remember clearly.

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 Post subject:
PostPosted: Tue Jun 13, 2006 9:19 am 
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998cc
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Joined: Wed Jul 20, 2005 8:23 pm
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Location: Concord West, NSW
Mine weighs more than the original subframe, not sure just how much more.

I used 50 x 25 for the construction of the frame (i think the wall thickness was around 2mm).

Dan


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 Post subject:
PostPosted: Tue Jun 13, 2006 6:17 pm 
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1275cc
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Joined: Fri Jun 17, 2005 10:31 am
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Location: Burpengary, Queensland - Home of Tricky Performance Engineering
Matt,

I think mine weighs in around the 22kg mark, heavier than the standard.

But obviously, we save on the engine/gearbox weight with the conversion.

Overall, it came out slightly ahead, by about 10-12 kg's

Cheers,
Tricky

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 Post subject:
PostPosted: Thu Jun 15, 2006 3:45 pm 
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Joined: Tue Mar 29, 2005 3:31 pm
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Location: Sydney
2 % carbon steel is usually the go....

(commonly known as mild steel) :lol:

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 Post subject: Subframe
PostPosted: Thu Jun 15, 2006 10:01 pm 
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848cc
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Joined: Fri Oct 22, 2004 5:31 pm
Posts: 181
Location: Central Tilba NSW
Mine weighs about 22kg, a bit heavier than std mini

Steel was 26.9 od tube, 2.3mm wall. to AS1163 C350 LO

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 Post subject:
PostPosted: Thu Jun 15, 2006 11:06 pm 
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848cc
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Joined: Wed Nov 23, 2005 12:40 pm
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Location: Bacchus Marsh, Victoria
Yeah i was just a bit worried about unsprung weight and adding all this extra bracing, turbo, intercooler and the likes. It comforts me to know that the Gti engine is pretty light. But it all adds up.


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PostPosted: Mon Jun 19, 2006 12:19 pm 
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998cc
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Joined: Wed Aug 18, 2004 2:41 pm
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Location: ACT
Yeah Tricky et al probably off a bit with the 30kgs, yeah 35mm OD mild steel tube with 2.5 wall thickness. Works fine...

Cheers

Matt

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 Post subject:
PostPosted: Mon Jun 19, 2006 3:33 pm 
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Joined: Sat Nov 19, 2005 1:37 pm
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Location: Vegus, Brisvegus
miniboy1962 wrote: "Yeah i was just a bit worried about unsprung weight "

All subframe steel is sprung weight. Suspension components attached to and including wheel are unsprung and those between the wheel and subframe are generally regarded as 1/2 sprung. The lighter the better for all though, especially for anything infront of the front axle line (unless you want to drag race it).

M


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