Ross tuffbond now making Harmonic balancers with Titanium hubs
Ross tuffbond now making Harmonic balancers with Titanium hubs and all sorts of other hubs as well for blower drives.
I dont think you can buy this product as a manufactured item to suit Nissan skyline RB engines, 4 cyl Nissan and Toyota,Ford 6 cyl turbo, Ford V8, Holden and Chev V8.
Why use Titanium crankshaft hubs?
Most problems occur when driving Superchargers and other accessories on Race engines as there are huge loads placed on the drive hub and transmitted through the crankshaft nose.
Unfortunately this causes a condition known as “galling”, this is when you get molecular migration from the 2 components, the crankshaft and the crankshaft drive hub, usually it is extremely difficult to remove the hub from the nose of the crankshaft due to a build up of the metal as it has grown or migrated from one to the other.
This usually causes the crankshaft a lot of damage as well as the harmonic balancer hub, which is usually a total write off.
How can you prevent this from happening?
By using a crankshaft hub made from a dissimilar metal the crankshaft and the hub are not attracted to each other, hence there is no galling on the mating surfaces.
What is the best material to use?
Titanium. It is as strong as exotic steels but is a dissimilar metal.
We have been manufacturing crankshaft hubs, drive hubs and harmonic balancers for 30 years and our experience with all sorts of race engines in all applications, and we have experienced these problems not only with heavy drive noses used on top fuel but with the extreme uses of what were once fast street cars making around 150Kw to now with that same engine being developed to run reliably on the street at 500kw.
Hence the need to upgrade to Titanium.