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@thecycleclinic
ryde Pulse Sprint is 390g and seems not to crack so long tension are keep under 1200N and rider weight is not too high I think the limit is around 80kg. The old stans 340 rims where too light and did crack the newer version is better. The Kinlin XR-200 is one I have used a few time and again has not cracked to my knowledge (mine certainly have not) but again spoke tension and rider weight are the enemies of these rims.
for 390g rims keep tensions no higher than 1200N for DS 1150N is better and riders weight to less than 80kg but the lighter the better. this will keep problems to a minimum.
What do you want to know about the novatec hubs. A bit confused what you are asking.