[quote=Edchris177]SKARR has the correct intel, you preload the beam 3/8" deflection. MAKE SURE the top nut is turned UP, so as to allow the beam to bend. Use a mason string stretched from end to end, measuring the beam deflection as you turn the bottom nut upwards.
Or do as MUMMP suggested to me.
"Turn the bottom nut up til it contacts the beam, then turn it up another 3/8 inch". His method is way faster, so simple a caveman...
Finally snug the top nut down.
Here is my Tech Gallery DIY
[url]http://www.thebeachcats.com/pictures/?g2_itemId=73301[/url]
You will find there is very little torque required to bend the beam. I think Dave had screwed up threads, or the top nut wan not turned up, meaning he was compressing the beam, rather than bending it.
I think your 4" height is due to the 14.5" rod, they are not all that long. I have 3, (one is 14.5" the others are 14". The extra inch or so will not make any real difference.[/quote]
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