125-200cc cr125 2011 1 1/2 hour race

hi all there is a race soon I was going to enter my son in ,it is a 1 1/2 hour beach race my question is will a full tank last that long? we race mx but I have always topped him up between races he is 17 but some bikes in his class are 250fs and a tankfull will last them .if we make a pitstop for fuel he will lose to much time what do you fellas think,

The stock tank should be fine for an hour and a half GP if it is jetted decent.

Later,

It will be a nailbiter! By "beachrace" if you mean a wide-open style mx or scrambles track, in deep sand, it will be close. It will depend on his skill level and how wide-open he rides. In deep sand I'm on vapors around the hour mark. I think if you can find a good deal on the WR style tank, it would be peace of mind! I'd go wherever you normally practice and see how it does for 1.5 hours, then factor in the sand and track style. This will give you some idea anyway.

Make the pit stop---just stop at the hour mark and put at least a 1/2 gallon in. I'm using the stock tank with a Lectron carb and have already figured out that I can get about 1 hour and 15 minutes MAX at a local riding area that has a few sandy sections.

My niece and nephew need about half a tank in their minis for a 1 hour race BUT I put in 3/4 to a full tank because a few lengthy tip overs with gas pouring out the overflow could cost a lot of gas and there is NO WAY that I'm going to let anything under my control end their day/race early.

My 13 year old son just completed a (1) hour hare scrambles and I was concerned about him running out of gas - judging from the amount of fuel in the tank after the race, I believe he may have gotten another (15) minutes but (30) seems like a stretch.

thanks all, yes I thought it might be pushing it abit and there is a local mx sandtrack near to us we use, and it does use lot of gas compared to hardpack tracks , any tips on riding a wet sand beach race ? do radiators block up with sand and overheat the bike ect

stockings over rads?