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Post by Andrew Rowland on Dec 30, 2016 14:36:53 GMT -5
Hello friends and Happy New Year for tomorrow!
I am looking to build a 555 supersqualo and need the following tyres/ wheels... Well lets say the tyres I will source from Paul Gage but for starters I need some wheels!
Front Tyres: 5.50x16" Englebert
Rear Tyres: 7.00x16" Englebert
So 16" wheels are presumably about 14.5mm dia.
So what is available?
HELP PLEASE
Andi
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Post by munter on Dec 30, 2016 18:00:00 GMT -5
Hello Andi
Here are my three suggestions
i) Racer...they produce a bare narrow alloy of nearly that diameter.
ii) Cartrix ....their alloys are close too
iii) munter sourced rims....tire bead 14.55mm, centre rib 16.4mm
These are the same rims before a little lathe work I used on my VRAA Vanwall (sad story that)
I use long 4 or 5mm grub screws on them, cant remember which.
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Post by EM on Dec 31, 2016 0:58:59 GMT -5
And for any of those wheels I would used a turned down Ninco Classic WW as an insert (I use my ultrasonic cleaner and household ammonia to strip the chrome* before they go into the lathe.
EM
* you will never see chrome wheels on a racing car - the acid treatment prior to plating weakens the spokes.
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Post by Andrew Rowland on Dec 31, 2016 7:49:10 GMT -5
Thank you both for your tips.
Munter, i've checked the Ninco wheels and they have that big inner hub so I cannot use them...
I think i've found the Cartrix wheels, are they type 1145? If so does anyone know the actual dimensions? I have width limits for EB's! Do they come in front and rear widths or just one type?
When you say your wheels, do you sell them? If so what are their dimensions? I notice the central rib is off centre? How does that work out / look?
Lots of questions, sorry...
Cheers
Andi
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Post by munter on Dec 31, 2016 19:11:57 GMT -5
Racer narrow rimsMitoos bare narrow rimsSorry I got it wrong about the Cartrix rims...got confused with Mitoos. Since BWA rims have become unavailable narrow rims were hard to find, now there are a few more options. As for my rims...do you have a lathe? they would benefit from some work. I have used the Ninco plastic wire as a base for an insert. I moulded and cast them for my VRAA Vanwall although some one slagged me about the look I was happy as it was a munter item. 
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Post by Andrew Rowland on Jan 2, 2017 4:54:25 GMT -5
Ok John, got it now. Thanks. I've purchased the Racer rims with no idea of their sizes so we'll see if they work out ok or not!
Cheers for now.
Andi
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Post by Peter Seager-Thomas on Jan 2, 2017 12:40:38 GMT -5
* you will never see chrome wheels on a racing car - the acid treatment prior to plating weakens the spokes. Alan, I think you will find that it is hydrogen embrittlement which causes the problem. These days there are ways around the problem, with the parts being baked after plating. Years back, this solution was not known, but the fact that high tensile steels were more susceptible to the problem was known. Thus, no plated spokes. Early race cars sometimes did have chrome spokes and highly polished rims, but not for racing. Racing cars usually had painted wheels. Peter. |
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Post by EM on Jan 2, 2017 14:00:49 GMT -5
You are quite correct, Peter. The issue is not an "acid bath" per se but a byproduct of the electrolytic plating process during which, in addition to the deposition of the chromium, there is ionization of the water-based solution with the resultant concentration of hydrogen ions at the surface (a defacto acidic condition) The baking removes this acidic film before the ions can re-form molecular hydrogen.
Al
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