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For lateral stability, you must have a lateral brace (or 2) underneath. Screws alone are NOT sufficient to prevent a potentially catastrophic side to side failure and collapse.
Great Question- Short answer is yes. Long Answer = once your runs are over 1:30(ish), you are going to want to time your off day or recovery workouts for post your long run day.
I would make a couple of recommendations to improve the board. 1. Instead of wiping it with a damp rag, wipe it with alcohol. A damp rag can raise the grain which makes the surface a bit fuzzy and less effective for an adhesive. Alcohol also clean up any grease or oils left on the wood. 2. consider using solid wood or hardwood plywood for the triangles. They will hold screws better.
If you search on RU-vid how to use a speed square you’ll find out how to get the angle you want using that tool he had in the video to get the angle you want.
I just run... my HR barely goes over 135. But, I guess the first question would be why you think 140 is your magic #. If you want real help, check out the coaching options we have: www.andypottsracing.com/apracingteam and drop me an email: andy@andypottsracing.com
