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Another thing we worked on for several years and brought to Indy and NASCAR, along with F1 on Huskamps end, the development and testing of a hybrid alloy called Beralcast363. An aluminum/Beryllium alloy. Incredible material. Replacing the aluminum and some carbon fiber pieces in Hertas dash and steering wheel, it dropped close to 4lbs from the cockpit. Huskamp was able to take that and apply it to front end components as well in F1 and we machined some hubs for Penske’s NASCAR program. Using Beralcast, they were able to better place weight in the cars.
I developed Beralcast road bike hubs, but pricing was astronomical, not market ready until extrusion pricing can be brought down. Talking about $3500 for a set of hubs. Not complete wheels, just the hubs. But, front and rear combined, 228 grams. Thats close to half the weight of carbon/ ceramic sets.
The Shop
Wpc is a different blast method - almost like shot peening
Cryo - which ive used with great sucess on certain gear sets - is essentially a heat treat. In simplist terms its a COMPLETED heat treat down to super low temp rather than just room temp
Ive gotten the sales pitch on pistons and alum parts - tested extensively - and not seen the proof in the pudding - but on gears and such - ive seen clearly improved durability
When it comes time for me to do a rebuild, I'm getting everything polished and cryo'd. If anything, durability.
Going by this same line of thinking I would assume treating crank rods would lead to a longer lifespan as well.
So microwelding between 2 gears under load when oil film is lost - is harder to occur.
This allows a wider selection of oils - with benfits in power there
i always wondered - shot peening improves part strength by creating a stress in the surface - correct?
And polishing removes all stress risers - common hot rod trick for a rod.
Which is better???
Shot peening would make sense for parts that are not in an oil bath, such as a shock spring or something similar that is highly stressed but does not need a surface that a bearing or something similar can ride on. If my understanding is correct shot peening helps reduce the likelihood of a surface crack initiating and propagating by hardening the surface of the part, thus making it harder for dislocations to travel through the material, by slightly and uniformly compressing it. This generally leaves a somewhat "rough" surface that wouldn't be ideal for high precision engine parts correct? For a rod I could see if being alright since the bearing surfaces would have to be masked or machined after the fact, and the rod body itself isn't interfacing with anything directly so the rough surface wouldn't be an issue.
Could you theoretically shot peen, then smooth and treat the surface to achieve an even more fatigue resistant part, or would any surface smoothing operation go deep enough into the material that it would negate the effects of the peening in the first place? Or is this common practice for highly stressed engine parts like rod shafts, trans shafts, ect? Again, I'm far from an expert in this area and am going off my limited knowledge so please set me straight if I'm going off track here, this is just an interesting subject for me and it's great to be able to ask in depth questions with someone who has extensive experience.
Exploring the idea of getting a finish on ANYTHING that moves and makes contact with other moving parts that IS NOT pressed into a bearing.
Still looking into it.
Pit Row
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