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Help choosing a grade of alloy for making plates

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oldzed
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Help choosing a grade of alloy for making plates

#1 PostAuthor: oldzed » Sun Dec 23, 2012 10:19 am

Hi All.
Got a couple of mounts and plates to get made up.
Need some advice on what grade of alloy I need.

first is a fork brace plate for a set of fz750 forks.
This is just a flat plate with 4 holes in it .

The second is to make up a set of mounts for twin shocks on an fzr swingarm.
Should I have them machined from a solid block or could they be welded up from plate?
Is there a type of alloy that is best and can be welded to a standard yamaha swingarm.

I wont be welding it but the guy who will be is "Difficult" to get any info from. He welds up Oil containers for a living not usually bikes.
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paulmceleney
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#2 PostAuthor: paulmceleney » Sun Dec 23, 2012 10:54 am

my jmc swingarm is made using 720 alloy
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Pigford
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#3 PostAuthor: Pigford » Sun Dec 23, 2012 11:41 am

paulmceleney wrote:my jmc swingarm is made using 720 alloy


7020 :wink:
And on the 7th day... Zeds were created!
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Rich
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Re: Help choosing a grade of alloy for making plates

#4 PostAuthor: Rich » Sun Dec 23, 2012 7:46 pm

If you want "peace of mind" maybe you should go to Harris or Metmachex who will probably know which grade the swinger is made from, if it needs to be heat treated after welding and which filler to use.
Rich
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oldzed
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#5 PostAuthor: oldzed » Sun Dec 23, 2012 10:02 pm

Thanks for the answers all.

Will probably let one of the local bike fabricators do it.

Just hate how every bike fabricator locally takes weeks to get round to
doing any job you give them.
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Z1B
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alloy

#6 PostAuthor: Z1B » Sun Dec 23, 2012 10:07 pm

Anything in the 6000/7000 range would from personal experience do you fine, the 7000 being stronger can be thinner. your choice .
Best run in recent years, Faro 2,500 miles, roads to die for. Applecross (NW 500) also awesome roads, current bikes, Z1, GPZ1100, ZRX1100, HD Fat bob.
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