JConstable
Donation Time
A simple question.....
I see three options to fixing my existing "Harmonic" damper in which the "rubber" insert has started to degrade and I need some guidance:
Option 1. Use a professional service to rebuild the existing damper with a new "rubber" insert. This damper has a somewhat chewed up key way (mid-priced option).
Option 2. Buy a new cast iron damper from BHJ or similar company (most expensive option).
Option 3. Buy a light weight alloy damper from Rootes Post Vintage Spares (much the cheapest option). Communications indicate that they do not stock a cast iron damper with the rubber insert.
I am really wavering between #2 and #3, although I like the price of #3, I am having trouble reconciling that a lighter mass alloy will have the same damping characteristics as the greater mass iron. I presume that selecting the correct damper mass is vital for effectively counteracting crankshaft twist. Similarly, I see the forces imposed on the softer alloy at the key way may affect the damper's durability. Am I making a mountain out of a molehill? All comments appreciated. John
I see three options to fixing my existing "Harmonic" damper in which the "rubber" insert has started to degrade and I need some guidance:
Option 1. Use a professional service to rebuild the existing damper with a new "rubber" insert. This damper has a somewhat chewed up key way (mid-priced option).
Option 2. Buy a new cast iron damper from BHJ or similar company (most expensive option).
Option 3. Buy a light weight alloy damper from Rootes Post Vintage Spares (much the cheapest option). Communications indicate that they do not stock a cast iron damper with the rubber insert.
I am really wavering between #2 and #3, although I like the price of #3, I am having trouble reconciling that a lighter mass alloy will have the same damping characteristics as the greater mass iron. I presume that selecting the correct damper mass is vital for effectively counteracting crankshaft twist. Similarly, I see the forces imposed on the softer alloy at the key way may affect the damper's durability. Am I making a mountain out of a molehill? All comments appreciated. John