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PostPosted: Fri Aug 10, 2018 12:54 pm 
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Site Rank - Deck Hand

Joined: Mon Nov 20, 2017 4:03 pm
Posts: 3
My Mirage drive on my 2017 Revo 13 has been squeaking for a while. The squeaking started soon after I had my standard fins swapped out for turbo fins.

I noticed the rear chain seemed loose, so I tightened it, but it continued to squeak. I took a closer look, and the part of the spine that moves with the rear fin (operated by the rear chain) now looks misaligned. Tightening the chain seems to have pulled it out of alignment with the rest of the spine.

Unfortunately, I am far from my dealer now. I'm a snowbird who bought my kayak during the winter in AZ, but I'm in Bellingham WA now and won't be back in AZ until November.

What might be wrong, and can I fix it myself? Many thanks in advance!



P.S. - I'm new here, can anyone help me with how to post a photo?


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PostPosted: Fri Aug 10, 2018 10:29 pm 
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Joined: Sat Nov 12, 2005 10:46 pm
Posts: 2966
Location: Escondido
Hi Karen and welcome to the forum. Squeaks usually need oil. I prefer a light oil in a spray can like BreakFree. Here's a reference pic. for the following info::

Image
Terminology:
1. Sprocket assembly
2. Spine
3. Idler pulley
4. Drum

Lube points:
A. Roller bearings and sprocket shaft for sprocket assemblies
B. Drum shaft and roller bearings (outside shown, but I prefer to lube the inside)
C. Idler shaft and roller bearings

Circles:
Idler adjusting nut (bottom)
Front chain/cable nut (right)
Rear chain/cable nut (left)

Lubing tips -- I like to lube anything that moves, but pay particular attention to the roller bearings around the three shafts mentioned. After lubing, exercise the parts to spread the lube, then wipe off any excess.

Chain/cable adjustments -- If you pinch the cables together firmly you should get some flexing I look for about 1/8" idler cable and front chain, and about 3/16 rear chain. Tighten in the order mentioned as one adjustment may affect another.

Notice there are adjustment nuts on both ends of the cables. If you just tighten one nut, you pull the fin to that side. Better to see if the fins are leaning, then adjust the appropriate side; if centered, tighten or loosen both sides equally.

for starters, you may have just over tightened the one chain. If so, loosen it and check the fin straightness.

This ought to get you back in operation without squeaks! 8)


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PostPosted: Sat Aug 11, 2018 10:33 am 
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Site Rank - Deck Hand

Joined: Mon Nov 20, 2017 4:03 pm
Posts: 3
photo of my spine assembly:
Image
and a close-up of the misaligned part:
Image


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PostPosted: Sat Aug 11, 2018 3:19 pm 
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Site Rank - Deck Hand

Joined: Mon Nov 20, 2017 4:03 pm
Posts: 3
Links to the photos I tried without success to insert (they're on OneDrive):

https://1drv.ms/u/s!Aipj9CZDtQMQgQ3H_pO9LjMrMEK6
https://1drv.ms/u/s!Aipj9CZDtQMQgQz_JGvH15o5cw8n

Thanks, Roadrunner, for the more-accurate description of how tight the chains should be (1/8" and 3/16" play) and where all the lubrication points are! Once I have my drive back to "normal", it will help me greatly!

But the current misalignment seems pretty severe to me, and re-loosening the chain seems likely to result in very sloppy operation of this fin.


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PostPosted: Sat Aug 11, 2018 4:00 pm 
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Hobie Approved Guru

Joined: Sat Nov 12, 2005 10:46 pm
Posts: 2966
Location: Escondido
KarenW wrote:
But the current misalignment seems pretty severe to me, and re-loosening the chain seems likely to result in very sloppy operation of this fin.
Based on your pictures, it looks like you have significantly over tightened the rear sprocket cable, cinching up the rear portion. The number of threads showing on your adjustment nut appears to be excessive. Loosen the chain and rotate the fins a few times to see if the sprocket realigns properly. If not, you may have a crossed roller bearing. Then adjust to about 3/16 "squeeze". Obviously you want a little chain flex.

The cables only need to be tightened to prevent slop in the fin movement. Excessive tightening accelerates wear and adds unnecessary friction. 8)


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