If Mick says those guys have better chains I would buy from them.
I think Spikey has a 550.
I have a spec sheet somewhere on the chains those guys have and they are way better than any other chain on the market, PM Nippon and ask for the specs, thats if he can make them for the 550. I have the "Nippon" chain and they are visible stronger and wear rate is incredible....
some info...
Reinforced Primary Chains for Honda CB 750 K0-K8, F1-F3
Technical background
These chains are newly developed using state of the art technology. The two important benefits of our new chains are:
- Improved max. fluctuating tension: Sand blasted inner plates and improved surface finish (embossed), precisely manufactured seamless bushes and stronger bolts.
These chains have a higher load capacity and offer more reliability against chain breakage in high performance engines.
- Better wear behavior due to larger joint surface and extremely wear-resistant surfaces of bushes and bolts (Bolts with chromium carbide deposition, bushes nitrated)
Chain stretch is minimized over the whole engine life, 0.2% after 60.000 miles.
These high performance chains are used in highly stressed chain drives of diesel engines. Besides high forces, the chains are also abrasive stressed by diesel particles. These chains are designed for lifetime durability (no exchange).
The stock chains (by RK) are the state of 1968, designed for use in gasoline engines.
Fluctuating tension
The important factor in chain breakage in engines is the maximum fluctuating tension, not the maximum tensile strength. The tensile strength in general is a multiple over the maximum occurring forces in an engine. Chains do not break because the tensile strength is exceeded, but because of material fatigue due to excess fluctuating tension.
Reinforced primary chain:
Max. tensile strength: 15.5 kN per chain
Max. fluctuating tension: 6.3 kN per chain
Mick
