To do it properly, you can't (shouldn't) avoid a crank mounted sensor or similar (flywheel etc). Having a crank mounted sensor and a cam sync is the only way to achieve very accurate timing, which is more and more important as we start pushing numbers up. Personally, I use the Ross 36-2 in your first link, with a Cherry sensor on a simple custom bracket. For the cam side, I use a GT101 sensor on another simple custom bracket, with a NZ wiring cam mounted single tooth trigger disk. Total cost breakdown (from memory) Crank side balancer: ~$1000AUD Cherry sensor: $80AUD Bracket: free scrap metal Cam side GT101 sensor: $80AUD NZ Wiring triger disk: $80NZ Basis of sensor mount and bracket: $25AUD (generic GT101 sensor mount slightly modified, bolts on to cut down CAS bracket).
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