Return to Hobie.com
Hobie Forums
It is currently Thu Mar 28, 2024 12:07 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Mon Feb 18, 2019 10:55 am 
Offline
Site Rank - Deck Hand

Joined: Mon Feb 18, 2019 10:49 am
Posts: 1
I noticed last time I was out on my Hobie that my right mirage drive pedal was slipping. As I was using the drive, the pedal was slipping out on the axle but not coming off. I could slide the pedal in and out on the drive. Slipping directly out from the connecting point. The other side was not like this and remained up against the connecting point. Has anybody had this problem or is this normal?


Top
 Profile  
 
PostPosted: Mon Feb 18, 2019 3:13 pm 
Offline
Site Admin

Joined: Tue May 27, 2003 12:44 pm
Posts: 15026
Location: Oceanside, California
There is a nyloc nut holding the pedal on. As you pedal and if your style also causes and outboard motion the nut has been known to back off. We are now checking every right pedal and either replacing the nuts to be sure they are engaging the nyloc part and adding loc tite.

Pop the cap off and add some red loc tite and tighten the nut.

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


Top
 Profile  
 
PostPosted: Thu May 16, 2019 10:04 am 
Offline
Site Rank - Captain

Joined: Mon Dec 14, 2009 6:15 pm
Posts: 76
Common problem that I have noticed on several Mirage Drives.

I believe on bicycles the pedals are left hand threaded on one side to prevent this issue.

Hobie tends to overuse Loctite in lieu of properly designed bolted joints. (Bolted joint design is not a trivial thing and believe it or not, there is engineering required to design a proper bolted joint).

A bolt is required to be stretched in order to function properly. Whenever you are clamping something (plastic) that is less stiff than the bolt, it will loosen over time. I do not like Loctite as a solution because once someone disassembles it, the Loctite bond is broken and most people don't keep a tube of Loctite at home.

Examples of poorly designed bolted joints are the bolts that hold the Vantage seat backs to the frame, nuts on the mirage pedals, and the threaded masts on the drives (although this design is better than the previous set screw version).


Top
 Profile  
 
PostPosted: Thu May 16, 2019 11:08 am 
Offline
Hobie Approved Guru

Joined: Sat Nov 12, 2005 10:46 pm
Posts: 3017
Location: Escondido
mantaray wrote:
Hobie tends to overuse Loctite in lieu of properly designed bolted joints.
I'm a big fan of Loctite Blue. Secures threaded fasteners well while allowing them to be removed or adjusted when necessary. Without it, just about everything on the boat and Drive loosens up sooner or later. Great peace of mind! Nyloc nuts are good, but even they can sometimes back off (as in the pedal above). Loctite enhances their performance as well. There are some applications where you want the screw snug but not tight (as in Mirage sprocket shaft retention screw, where over-tightening can crack the spine). Loctite keeps it stable. I see that it is overused on many bicycle parts as well. Great stuff!! 8)


Top
 Profile  
 
PostPosted: Thu May 16, 2019 12:42 pm 
Offline
Site Rank - Captain

Joined: Mon Dec 14, 2009 6:15 pm
Posts: 76
Roadrunner wrote:
mantaray wrote:
Hobie tends to overuse Loctite in lieu of properly designed bolted joints.
I'm a big fan of Loctite Blue. Secures threaded fasteners well while allowing them to be removed or adjusted when necessary. Without it, just about everything on the boat and Drive loosens up sooner or later. Great peace of mind! Nyloc nuts are good, but even they can sometimes back off (as in the pedal above). Loctite enhances their performance as well. There are some applications where you want the screw snug but not tight (as in Mirage sprocket shaft retention screw, where over-tightening can crack the spine). Loctite keeps it stable. I see that it is overused on many bicycle parts as well. Great stuff!! 8)


I prefer to use a sleeve when designing joints that must allow rotation of the mating part. This allows for proper torque on the fastener to stretch the bolt and ensure it will remain tight. I would use Nyloc nuts and Loctite only as secondary insurance to a proper joint.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Jump to:  
© Hobie Cat Company. All rights reserved.
Powered by phpBB® Forum Software © phpBB Group