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  #1  
Old 26-07-2016, 03:29 PM
johno74 johno74 is offline
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Default Grade of steel for yokes and spindle?

I'm planning a leading link front end for a v8 trike out of largeish 53mm diameter tube and need to have the yokes, spindle and steering pin machined.
What grade of steel would i need for the spindle-maybe a different grade to the yokes?
4340?
If i was going to use ally for the yokes and not steel, would H30 be acceptable?
Me old mate the engineering genius John B used to answer all my awkward questions but cancer got him [RIP mate]
Any help appreciated as the machinist will do the work but not sort out the specs etc as his work already expects him to do 3 things at once.
thanks people!
Johno
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Old 27-07-2016, 05:50 AM
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Haaarrrryyyy?
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Old 27-07-2016, 07:50 AM
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Not me this time sorry
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Old 28-07-2016, 05:22 AM
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I used to be an engineering buyer, but steel stock was not my forte. I think the best steel to use would be Stainless Steel grade A4 expensive but worth it in the end. As for Ali, I've no idea I'm afraid.
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Old 29-07-2016, 12:01 PM
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EN16 for spindle etc. Yokes could be billet.
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Old 30-07-2016, 03:49 PM
johno74 johno74 is offline
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Quote:
Originally Posted by strima View Post
EN16 for spindle etc. Yokes could be billet.
Thanks everyone-esp Strima. Strima - Billet for the yokes because they would be 20 odd mm? Ie no special requirements/qualities because its relatively thick?
ta
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Old 30-07-2016, 04:38 PM
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I would speak to someone who designs and makes yokes to confirm the thickness required but 20mm might be OK.

There's a lot of stress on a front yoke especially on a V8.
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