ADVrider

Go Back   ADVrider > Riding > Layin' down tracks
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 06-04-2014, 05:44 PM   #1
oldxr OP
Beastly Adventurer
 
oldxr's Avatar
 
Joined: Jan 2007
Location: central komifornia
Oddometer: 1,072
Ram mount vibrations-my gps died

I dont want to lay the bucks out for a Montana.My garmin 76cx died.It wont light up-sometimes it does then freezes up and I have to remove power.I just scored another clean used 1 on fleabay.Is there different mount that wont vibrate as much?The old 76cx only made about 6000 miles.After buying mapsets for this thing I am a little pissed.I did a master reset on it.Bike it is mounterd to is a Honda xr650r.
oldxr is offline   Reply With Quote
Old 06-04-2014, 11:17 PM   #2
mcnut
Beastly Adventurer
 
Joined: Apr 2006
Location: Bakersfield CA & Sammamish WA
Oddometer: 1,348
I don't have a great answer other then to say that I see lots of folks using a mounting configuration which instead of reducing vibrations/shocks in my experience actually amplify them.

When using RAM hardware I'm a strong believer in using the shorter arm (2" I think) if possible and experimenting with the geometry, usually with the arm close to parallel with the ground.

All the time I see photos using longer arms almost vertical which results in a whipping action and not the best to dampen up & down movement of a big piston and forks.

Bruce

mcnut screwed with this post 06-05-2014 at 07:59 AM
mcnut is offline   Reply With Quote
Old 06-05-2014, 02:36 AM   #3
9Dave
Bazinga!
 
9Dave's Avatar
 
Joined: Aug 2005
Location: Central Ohio
Oddometer: 12,700
More than a couple threads over time about GPS units dying on big thumpers. Not just a problem with the bike, but the terrain its ridden on.

Make sure you check your battery connections. May be your problem.
__________________


dunno.....
9Dave is offline   Reply With Quote
Old 06-05-2014, 11:45 AM   #4
Countdown
Beastly Adventurer
 
Joined: Oct 2003
Location: Carson City/Ridgecrest
Oddometer: 4,989
Quote:
Originally Posted by mcnut View Post
I don't have a great answer other then to say that I see lots of folks using a mounting configuration which instead of reducing vibrations/shocks in my experience actually amplify them.

When using RAM hardware I'm a strong believer in using the shorter arm (2" I think) if possible and experimenting with the geometry, usually with the arm close to parallel with the ground. Bruce
Every mount has some resonant frequency. When the input vibration hits that frequency, it is amplified by the "Q" of the system at that frequency. However the innards also have a resonant frequency which is the one you really want to avoid and we have no idea what that is (not in Garmin Spec).

Besides making the mount as rigid as possible to avoid amplification, reduce weight of the 76, and stop internal resonance.

Only use the light weight long life batteries if any

Put short strips of black electrical tape under each battery and on the cover where it presses on each battery near the screw until you can just twist the screw in.

76Cx is best unit ever but I have one with no antenna and one with no 12V input after 40,000 miles. They just wear out by vibration fatigue.
__________________
Jerry Counts
Countdown is offline   Reply With Quote
Old 06-05-2014, 07:51 PM   #5
Emmbeedee
Procrastinators
 
Emmbeedee's Avatar
 
Joined: Mar 2008
Location: Near Ottawa, ON, Canada
Oddometer: 8,803
Quote:
Originally Posted by oldxr View Post
I dont want to lay the bucks out for a Montana.My garmin 76cx died.It wont light up-sometimes it does then freezes up and I have to remove power.I just scored another clean used 1 on fleabay.Is there different mount that wont vibrate as much?The old 76cx only made about 6000 miles.After buying mapsets for this thing I am a little pissed.I did a master reset on it.Bike it is mounterd to is a Honda xr650r.
If you like your 76 so much, why not exchange it and about $110 for a refurb from Garmin? Check Garmin's 'Out Of Warranty' page. If you did that, Garmin would likely transfer your maps to the replacement.

Back when I had a BMW F650GS it killed an eTrex Legend on me so I bought some 'Silentbloc' rubber mounts and put those under my next GPS.
__________________
Want to know more about the Garmin Montana? See the Wisdom and FAQ Thread.
Want to know more about the Garmin VIRB? See here.
"The motorcycle, being poorly designed for both flight and marine operation, sustained significant external and internal damage," police noted.
Emmbeedee is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 07:27 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014