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I needed a synchronizer to check the carbs on my bike but balked at the price of available units. Since the 1500 only has two carbs seem like a pair of vacuum gauges would do the job. I foundgood 3" vacuum gauges at Harbor Freight for $9.00 so bought a pair. A couple of aquarium needle valves for restrictors,mount the gauges on a small boardand voila, synchronizer. I connected both gauges with a T fitting to one vacuum port and cranked down the two needle valves for reasonably steady readings noted any difference in the gauges, less than 1Hg, took the T off and was ready to go. Grand total cost less than $25.00. Tweaked the carbs in a bit but they weren't very far off to start with.
I needed a synchronizer to check the carbs on my bike but balked at the price of available units. Since the 1500 only has two carbs seem like a pair of vacuum gauges would do the job. I foundgood 3" vacuum gauges at Harbor Freight for $9.00 so bought a pair. A couple of aquarium needle valves for restrictors,mount the gauges on a small boardand voila, synchronizer. I connected both gauges with a T fitting to one vacuum port and cranked down the two needle valves for reasonably steady readings noted any difference in the gauges, less than 1Hg, took the T off and was ready to go. Grand total cost less than $25.00. Tweaked the carbs in a bit but they weren't very far off to start with.
