Summer time bike riding

The boys absolutely LOVE their bikes. We took the bikes to the river on Sunday and after making drums we went for a ride. Then when we got home they wanted to ride again. Max can ride without training wheels but he likes to have them on so he can "turn sharp corners". As he was riding yesterday one fell right off and he kept going without even noticing! Of course as soon as he noticed it was all about fixing it. I think the only thing he likes more than riding is fixing!