Write your question here..It says this is...
Write your question here..It says this is a 3 bike capacity. Since it doesn't have bumpers, what are the odds that we can get four bikes on it, if two of them are fairly small children's bikes?
I would say your odds are pretty good, that definitely sounds like a good possibility. If it does not work, Backcountry.com has great return policy and will take things back and give you a full refund no questions asked.
Growing up we transported 2 adult bikes and 2 kid bikes on this rack and made several 1,000 mile trips, I think you should be good to go.