Long bolt modification

[Wayne]

This is the long bolt mod. you may have seen it before, but for those who haven't here it is.

[JPXman]

how about a pic of what you did between the sparcaps on the inside? looks good from the outside!

[Wayne]

OK, the inside, I have to say that Im not happy about putting a 3/8 inch hole in the spar for this mod.

[Wayne]

This is the inside. The rivets under the long bolt had to be reversed as ther was not enough space for the outer houseing

[JPXman]

have you seen or heard of the rib "vertical bracket" mod?

it was done on 2-seaters and Elite's - a 90 bracket between the spar web and each rib. it involved putting a U-channel on the flatside of each rib sparcap (between the rib and sparweb, so you have to remove the rib to do it), and then riveting an L bracket (about 5" wide) from the spar web to the U-channel.

it prevents the rib from moving up and down, as the flex of the gussets are the only thing holding the nose of the rib in place.

just a thought, since you've got it all open............ only another 300 or so rivets to remove and replace

Tyler

[Wayne]

I have just spent 5 long days finishing the wings and ailerons and the long bolt mod, at this point after 300 rivets all I can think about is cover this bird and getting the motor running, then I will get a certification and inspection, then my ultra light liscence, this is how we do it down under,( saftey and all that stuff). In Australia we can only fly unlincenced and unregistered if it is over our own property or we have permission to fly over and a sign is clearly visible on the craft stating " Experimental ".

[JPXman]

i don't fly with rotax's, but shouldn't you have a "crush" plate on the front of those props? shannon?

those spacers will put point loads on those props that will lead to cracking. do you have a plate that just isn't on there right now?

Tyler

[Wayne]

I do have the spinner backing plates and after repeated warnings not to use them I have left them off, I have put a thin strip of plywood under the props as a "cushion" and have not tighten the props to full torque at this time. The 1 motor has been run for 4 minets at les than 1/2 throttle, the other is yet to start and the props are removed at this time.
Thankx for the warning but I do not know what these 'crush plates' look like can anyone post a pic or describe the little suckers, I do hope to have new spinner plates before full tune / test and launch.

wayne

[lazairiii]

[Shannon]