Piggyback Arrow Sac install help

[wakeskier]

I've been using the arrow sac in the ski locker of my 220 for a while now and I finally got around to plumbing it in...

Used the Belly Tank overflow to the bottom of the arrow saw, then connected the original belly tank vent to the top of the arrow sac right above the input.
I also used the 1/4" tube thru the sac into the inlet and exit hose to prevent vacuum.

Filled up great, but I couldn't get it to drain completely (probably 4-5" of water left in the sac)
So I had to drain the rest manually...

I'm guessing the 1/4" tube allows this to happen? (anybody else have this problem?)

Any suggestions on how to fix this so I can drain fully automatic without worrying about busting mu belly U tank from vacuum?

[s_kelley2000]

Did you ever figure this one out? If I read what you did correctly you have the overflow on the bottom rear of the sac and the vent on the top rear of the sac? If so I am wondering if moving the vent to the front of the sac might make a difference?

[moto822]

Hey Man,

I have he same issue. What I am in the process of trying is integrating check valve with the vent tube. I had the check valve without the tube and it was an issue. Hoping the valve helps.

[wakeskier]

I finally got this figures out.
I ended up drilling some holes in the vent tube.
Tried it out on the water yesterday and it works perfect, empties completely!

[s_kelley2000]

Your pictures aren't loading for me but glad you figured it out! Sorry I missed you guys yesterday, next time for sure.

[wakeskier]

ok, lets try this again: