In reply to henwardian:
> Never seen those timber connector things before. They look like a great idea though, I will definitely add them to the middle of joints. Would just use a normal washer on the outside of joints though because the teeth wouldn't do anything when only bedded into wood on one face.
Single teeth outside and double teeth between the timbers for maximum strength joint. It spreads the load over a greater area of timber rather than just a bolt though the hole.
> In reply to Howardw1968:
> I didn't actually look at the moon board when making this but I just had a wee look and it is pretty similar.
> The difference is that my boards will be 20 and 10 degrees which is a lot less steep than most serious training boards. The boards at the wall I used to go to at that angle did not have kickboards (they only had kickboards on the 30 and 45 degree walls) and sit starts worked fine like that.
Go steep. Have a section that lowers down on chains. You can always fix it permanently up at 10 deg if you really don't like it.
> It might not be clear from the diagram but my plan is to use the constriction of the room to support the structure. The top beams will be cut to exactly the right length to fit quite tightly between the two side walls and the left hand supporting struts will be snug against the wall on the left. In this situation, there isn't even really a support needed on the right side because the structure can't fall down without knocking the walls down. The single strip fixed to the wall on the right was something I added because without it, weight near the right end of the top beams would be magnified by a nasty leverage effect and I didn't want that to be a possibility. On the left side, the vertical beams will mean that this cannot happen so I didn't think it needed to be attached to the wall.
It may not fall down but you need to allow for timber shrinkage and other movement.
Fix the timbers top right and bottom left of your diagram. Do not fit the horizontal timbers tightly across.
The most important fixings are into the right hand wall. Fix this wall plate first.
Use it more than I use my board, Rick, over forty years in civil engineering and building.