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Post by hookedup on Jun 20, 2022 9:16:57 GMT -5
Since Yamaha got rid of the torque fin on their larger engines I didn't know how to adjust anything to remove the pull to starboard caused by prop rotation. Long story short, Brian on the Ranger Tug site suggested to add www.amazon.com/dp/B0000AXV99?psc=1&smid=ATVPDKIKX0DER&ref_=chk_typ_imgToDp to the lower unit and I ordered one today. I did find where one guy beat the lower unit with a hammer until he got the pulling to stop, but I think I go with the torque tab.
I also found out why they removed the torque fin from the anode...when on plane the fin isn't making contact with water, or very little contact with water so it won't help.
Has anyone added a torque tab? I've read a few methods for attachment, but curious how best to attach one. I'm looking forward to not always having to pull the steering to port or making an 8 degree addition to port when using the autopilot.
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Post by fishnfool on Jun 20, 2022 9:49:35 GMT -5
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jerryk
Captain
When not online I'm likely on Knot Online
Posts: 599
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Post by jerryk on Jun 20, 2022 10:18:03 GMT -5
Richard, the Amazon site shows a diagram where the tab is placed on the starboard side of the skeg, vertically under the anticavitation plate near the rear of the skeg. One of the reviewers said he added a bit of JB Weld under it which sounds like a good idea, but there were also comments that the screws supplied were wrong sized or not self-taping so you may need to supply your own screws. Don't do like the one guy and use pop rivets. If you read the comments and reviews you get a bit more, but the best answer I found was this one:
Question:how do you install Answer:The right trailing edge of the skeg has to be drilled and either tapped or machine screws installed with nuts on the left side. Use the grim tab as a template for drilling. Not a big deal. I am well satisfied with mine. PS: there is a small step in the backside of the tab that hangs off behind the skeg. By John C. Vines on April 18, 2015
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Post by hookedup on Jun 20, 2022 10:34:26 GMT -5
Didn’t see any for an F250. Local dealer told me that he wasn’t sure Yamaha ever had them on 250 and larger HP.
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Post by hookedup on Jun 20, 2022 10:40:53 GMT -5
Richard, the Amazon site shows a diagram where the tab is placed on the starboard side of the skeg, vertically under the anticavitation plate near the rear of the skeg. One of the reviewers said he added a bit of JB Weld under it which sounds like a good idea, but there were also comments that the screws supplied were wrong sized or not self-taping so you may need to supply your own screws. I think the JB weld and self taping is the best idea. Read quite a few possible ways to mount and yeah, the pop rivets didn’t seem like a realist solution.
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Post by Twisted on Jun 21, 2022 9:40:02 GMT -5
I am no mechanic but I would not recommend beating the lower unit with a hammer EVER!
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Post by schlnrnd on Jun 24, 2022 22:13:10 GMT -5
I am no mechanic but I would not recommend beating the lower unit with a hammer EVER! Not unless you ran over a shoal and bent it. Lol.
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Post by hookedup on Jul 11, 2022 15:17:47 GMT -5
Installed torque tab today. Letting J-B Weld cure and will try and test tomorrow.
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Post by hookedup on Jul 12, 2022 16:26:50 GMT -5
Took it out this morning and FIXED. Just as easy to steer to port as starboard and no more autopilot always drifting to starboard. Checked MPH and I don't think anything changed.
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jerryk
Captain
When not online I'm likely on Knot Online
Posts: 599
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Post by jerryk on Jul 12, 2022 17:44:12 GMT -5
Well done Richard! You've had some productive work lately, between this and your drains! You must be feeling more like yourself lately which is great to hear. Now time to get out and enjoy our boats and maybe catch some fish!
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