Mercury prop TORQ hub breaking

bogib · 28 June 2011, 17:11

We went out on our Lifeboat which has twin Mercury Optimax 225 in force 6/7 which is not to bother much about, on our way out we had a couple of jumps going over the waves and in one we lost port engine as it started to spin, we got ashore on one engine and replaced the hub with new one and we continued the mission on way back same thing happened and again port engine.

Anyone experianced breaking hub continuasly as this happened to us a month ago too again port engine.

Bogi

Dirk Diggler · 28 June 2011, 19:22

You could either learn how to throttle correctly, or fit solid hubs....

kubcat · 28 June 2011, 22:34

I have had the issue where if the hub has spun and been replaced one too many times, it gets weak and is time for a new prop.

If the props are good, you need to play with the throttle a little more backing off when the prop is out of the water so re entry revs are the same as what the boat needs for that speed.

bogib · 28 June 2011, 23:47

We took the boat out of water tonight and the reason for going second time was Jakob did not tight the nut enough so it had a bit of space, so now we have replaced the hub and tighten it to specification and we are now again ready for next callout.

We have had 5 callout this month so far plus other services we have been asked for.

Bogi

uncle al · 29 June 2011, 20:59

re prop hub dont forget they are supposed to be checked for tightness after 20 hrs (re-torqued)