You should probably just skip this post, since it probably doesn't contain anything you want to hear. But as somebody who has successfully fought the battle with obesity for several years now, I'm going to share some of what I've learned. I hope this doesn't offend you, but I do feel like I know some of the hardships you are facing.
Originally Posted by desmo13
With a BMI of 32.9 you are considered obese. So it seems like you should be focusing your efforts on losing weight before you worry about anything else, like how fast you can ride. Somebody who is as heavy as you should gradually work up to exercising 90 minutes a day, almost every day. To accomplish that, you probably need to ride slow and steady with not too many hills. You just can't afford to burn yourself out before the 90 minutes is up, and you have to be able to come back and do it again tomorrow. So slow down! Sorry, that's just the way it is, according to just about every reputable weight loss expert out there. You also should check with a doctor before you do much more.
About your diet: "No sugars, grease, etc." Sorry, not true. Clif bars contain sugar, and meat and cheese are packed with fat (grease). Those foods should probably be an occasional treat while you're losing weight, not mainstays of your diet. Instead of the Clif bars, try a big breakfast of whole grain cereal, fruit and skim milk. This will give you carbs and calories for a long ride with much more nutrients.
According to the Weight Loss Registry, most people who have successfully lost a lot of weight and kept it off have two things in common:
they eat a good breakfast and
they exercise for 90 minutes or more every day.