Jumbo Pumping Love 

Jumbo was put up by Pat and Rick Thompson. The grade is definitely 10d.A lot of people who climb at Shelf a lot agree with this grade.

Montay - with all due respect for your opinion, the consensus grade for this route is 10d. Since the American grading system is rather vague in many regards (i.e. - variables such as body size and reach, level of fitness, experience, etc.) it at best serves as an approximation of difficulty. That is why a consensus grade, which is defined as the grade generally agreed upon by the majority of climbers, is so important when characterizing the difficulty of any particular route. While we will always see debate in the climbing community about the respective grade of a given route, particularly new test pieces (which this certainly isn't), a trade route such as this one becomes recognized by local climbers as a particular grade, and generally that grade becomes published consensus grade. In this case, the subject route has been repeated hundreds of times, and from those ascents the consensus grade of 10d has emerged.

When one compares the difficulty of this routes to other routes of its grade it seems to measure up quite respectably. For example, it is noticeably more difficult than its companion route, Love Pump (10b/c), and compares quite favorably to Turbo Charged, Inter-cooled, Meat Machine (10c/d), Menses (10d), and Slender Fungus (10d). I suspect that is why people call it 10d.

Funky side pulls from the start, straight forward at the top. A fun climb that's worth doing.

Enjoyable side pulling with a thin left foot move at the crux around bolt three. The route is bolted extremely well and, in fact, watch out for the z-clip action between bolts three and four. There is a seventh bolt before the anchors which is nice because, although the climbing is significantly easier up there, it's a pleasure to have the protection. There's also a sweet right-hand hand jam at the last bolt before the anchors.