Flo Torq IV Hub Kit

[brian61]

I have a 2017 Sun Tracker Tri Toon with a Merc 150 Hp outboard. I had a minor vibration at low idle that people said the Flo Torw IV Hub Kit would resolve. I installed it and it did remove the low speed vibration, but I now have a pretty good vibration as I accelerate at low RPM's. As I speed up it goes away.

I tightened the prop nut, but I noticed the aft sleeve doesnt alow for it to be to tight, as it starts to flex. Am I doing something wrong?

Any advice on the vibration?

 

[Texasmark]

You haven't fully seated the hub or you don't have your thrust washer installed correctly. You shouldn't have any slop in the prop and Merc recommends 55 ft-lbs for at least their 90 and 115 hp.....no slop there.

I just installed a prop requiring a hub kit. The kit was made by the prop mfgr. for the specific prop I bought so it is the right one. I installed it and got it to what I thought was somewhere around 55. Took it out and ran it for a couple of hours and noticed prop rattling under certain conditions.

Checked and the prop was loose....apparently the insert had a problem seating fully on my initial tweak. So I retorqued it and had it out again for a couple of hours and no more slop.

 

[QBhoy]

Yeah. As above. My thoughts would be either the theist washer is missing or you’ve tightened down the nut outside the hexagonal insert of the locking tab washer. Easily done.

 

[jimmbo]

It is a good idea to rotate the prop as you are snuggling/tightening it as it can help Center it as some Thrust Washers are a little loose in the prop hub

 

[Texasmark]

You haven't fully seated the hub or you don't have your thrust washer installed correctly. You shouldn't have any slop in the prop and Merc recommends 55 ft-lbs for at least their 90 and 115 hp.....no slop there.

I just installed a prop requiring a hub kit. The kit was made by the prop mfgr. for the specific prop I bought so it is the right one. I installed it and got it to what I thought was somewhere around 55. Took it out and ran it for a couple of hours and noticed prop rattling under certain conditions.

Checked and the prop was loose....apparently the insert had a problem seating fully on my initial tweak. So I retorqued it and had it out again for a couple of hours and no more slop.

I just bought a new prop and hub, identical to the one mentioned, only 2" shallower in pitch. Before I installed the hub, I lubed it up with Vaseline (Petroleum Jelly). Took the mallet and whacked it just like they said to do and I did to my first one, but this time it went all the way in....the first time. Mounted it and it torqued right up. Shouldn't have any problems with this one.