He there to you all.

I am ditching the rear 18" on the MC18 and I need the missing dimensions from the drawing here on the site:

\http://tech.nsr-world.com/nsr/mc18/f3-rear-suspension/

Does anyone know the Hole sizes, The Plate thickness and very importantly the material they are to be fabricated from?

If I am going to have them made I need to know the right info.

Hopefully one of you either knows,or has a spare set they can have a measure of

Thanks Guys.

i made a set from 1/4" plate aluminum. Not sure of the aluminum type. Not sure if it really matters that much. I don't remember the hole diameter I just matched existing using drill bits to fit through the old hole.

I did have a conflict with the swingarm and the pipes. Ended up going back to stock suspension. Would like to hear how you overcome that problem.
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MC21R9N track
MC18R2J track
CBR954
CR250

My advice would be 6061 T6 aluminium. Very strong and good corrosion resistance. Easy to machine and anodizes well. Even left unfinished it looks good for a long time.

7075 T6 would also work extremely well as it's harder and stronger than the 6061 T6, but the natural oxidization of the surface doesn't look too pretty so probably needs to be anodized to stay looking good.

5083 H112 is another good aluminium and the cheapest of these three, with 7075 T6 being the most expensive. I use 5083 for knocking up sample step kits to check for clearances and position and what have you. Then knock out the real thing in 6061 T6.

Be insistent on the temper of the material you want, as it makes a huge difference. For example, if you're fobbed off with 6061 T0 then although the grade of aluminum is correct, the temper (T0) is softer than a very soft thing so no good for suspension link plates.

Matt@TYGA Thanks mate, That is the kind of knowledge I am looking for. I will go and see a very good machine shop i have located to see if they can do this,

Will keep you posted on the progress of the bike.

Cheers cangus and Matt.