radio restarts when starting bike...
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Cruiser
Joined: Nov 2006
Posts: 230
Likes: 1
From: Delaware
Jack
Outstanding HDF Member
Joined: Apr 2007
Posts: 2,884
Likes: 75
From: Goldsboro, NC
Well, I never thought anything about it. Aren't these just like the cars? When the key is on, the accessories work, when the key is put to the "Start" position doesn't all power go to the starter? An electric motor draws the most amperage when it initially starts up.
I can't see why they would work any other way.
I never noticed what mine does, I'll try to remember when I get home next weekend.
I can't see why they would work any other way.
I never noticed what mine does, I'll try to remember when I get home next weekend.
Cruiser
Joined: Dec 2005
Posts: 185
Likes: 0
From: Oklahoma City
Like previously stated, just a voltage drop from using the starter. I'm guessing that the radio has some predetermined voltage that it turns off at and depending on how sensitive that sensor is will be the difference on why some do and some don't. My '08 does it occasionally, it doesn't do it all the time but if it does the bike has been cold soaked at work (around freezing) or after riding and the motor gets shutoff for a minute or so. Maybe 2-3 out of 10 starts it will shutoff the radio. If your concerned, I'd say get the voltage drop checked when starting. There are procedures in the SM.
Road Warrior
Joined: Jan 2010
Posts: 1,570
Likes: 2
From: East Tennessee
It is simply a voltage drop problem. Electronic devices are designed to shut down at a voltage usually less than 10 volts. Most starters pull your battery voltage down to 10 or less volts on start up. This has nothing to do with your battery being low. It will do the same thing on a brand new battery. If your bike is out of warranty and you dont wish to pay the dealer some huge labor cost, you can correct this problem by putting a capacitor in your radio circuit. The capacitor will provide enough power to your radio to prevent the voltage drop while the bike is being started. After your bike starts and the starter solenoid drops out and your alternator starts charging, the capacitor will recharge and be ready for your next start.
Tourer
Joined: Aug 2008
Posts: 493
Likes: 17
From: Ft LAuderdale
I WAS ALSO WORRIED ABOUT THIS BUT MOST CARS DO THE SAME THING.
MY BRAND NEW $40k LEXUS DOES THE SAME THING. DO NOT WORRY ABOUT IT.
I AM A RADIO ENGINEER AND IT IS VERY DIFFICULT TO AVOID IN DESIGN
MY BRAND NEW $40k LEXUS DOES THE SAME THING. DO NOT WORRY ABOUT IT.
I AM A RADIO ENGINEER AND IT IS VERY DIFFICULT TO AVOID IN DESIGN
Road Warrior
Joined: Oct 2008
Posts: 1,536
Likes: 0
From: Virginia
Update - Went into the garage last night to put the trickle charger on the bike and noticed the pos bat term was really loose. Not sure if it has anything to do with how the radio acts just passing info. The battery is 4 years old and is probably due to be changed, I don't use a battery tender and think before this summer I might change it out just to be safe.
Road Warrior
Joined: Nov 2009
Posts: 1,444
Likes: 1
From: SC
Never paid any attention to it myself, but it sounds normal as everyone else has said. Cars do the same thing, trucks too.....
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