It has been in the past that the chain should have 3/8"-1/2" play in it. The new kinroads come with the chain really tight, but 2 out of 3 karts I had to loosen chain to the above mentioned specs. The adjustment will flex with the suspension. I personally believe when too tight not only will you get the popping noise but you also put a lot of pressure on the axle bearings as well as the chain and sprockets. I have been in the maintenance field for many years and be it a conveyor motor, cycle or buggy their must be some play. TOM
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