Before work this morning decided to load up the panniers and go for a ride around the lake. Learned a fair bit really, mostly about how bad my packing is at getting the weight overloaded on one side, but will work on that one. Overall speed wasn’t that bad, but acceleration was dreadful. But the biggest lesson was fuel uses (blood sugar), used significantly more than on an unloaded lap of the lake. Obviously this is going to take in more thinking and testing to find the sums to work out what my new carb intakes going to be. But currently looks to be a massive increase over a normal ride. Will keep you posted on what I learn.