Forum:Equip Monster Effects

I am aware that some equip cards have said effects while equipped to certain monsters (IE Dragunities). Now I have a question related to that: do all monsters have their effects while the card is equipped, and if not, where is the line?

For example, using Morphtronig Vaccuumen, if I would equip a Solar Flare Dragon to it, would it's effect still activate to do 500 damage to a player during the standby phase, since its effect is not related to type, element, or atk/def?

I already know monsters treated as equip cards do not have types, elements, or stats(atk/def), but there was nothing I could find clarifying what effects do or don't work.

I heard "when sent to graveyard" effects like Dark Tinker would work, but not effects that activate on the field: But in OCG, if you have a monster face-down that special summons another monster when destroyed (not just by battle), and it gets destroyed by wattmole's effect, the special summon doesn't activate, because face-down cards effects aren't active (and wattmole destroys it while face down). So by those rulings, why would only send to graveyard effects activate if its effects aren't yet active?

Any insight (with citations) please?