Yamaha Discussions about Yamaha ATVs.

Can jump starting from a car cause prob?

Thread Tools
 
Search this Thread
 
Old Jun 27, 2007 | 11:44 PM
  #11  
mdebuck's Avatar
Pro Rider
Joined: May 2006
Posts: 434
Likes: 0
Default Can jump starting from a car cause prob?

try a battery charger instead of jump starting it next time
 
Reply
Old Jun 29, 2007 | 03:36 AM
  #12  
KNOWSALOT's Avatar
The Facility
Joined: Nov 2001
Posts: 4,062
Likes: 1
From: Mississippi
Default Can jump starting from a car cause prob?

The regulator on an ATV can handle generally about 100 watts more than what the stator is capable of producing. It can only take that maximum for a short time though ofcourse.

Most automobile alternators are making 3 to 4,..even 5 times the ammount of wattage the ATV regulator can take in. However, if you have it connected to a running car, the regulator WILL demand that maximum draw for the entire time. Not good.
 
Reply
Old Jun 30, 2007 | 02:19 AM
  #13  
rruser's Avatar
Pro Rider
Joined: Jan 2006
Posts: 298
Likes: 2
Default Can jump starting from a car cause prob?

Once again, the only problem is voltage not amps. Watts are the amount of amps x voltage so the only way to effect anything is to go above its rated voltage. Volts push and amps are pulled. You could jump start off a F350 powerstroke with 4000 cranking amps and it won't hurt a thing unless the system pushes more than 12 volts.. in that case the ECU, every light bulb and the coils in your car would also fry.
 
Reply
Old Jun 30, 2007 | 06:01 AM
  #14  
Quad-Maniac's Avatar
Pro Rider
Joined: Jun 2007
Posts: 221
Likes: 0
Default Can jump starting from a car cause prob?

While charging with a battery charger the voltage across the battery terminals can reach 14.5 volts. This is the same max voltage that will be seen by jump starting with a running automobile. This will cause NO damage to a modern ATV. It doesn't matter whether you are attempting to jump start from a running garden tractor or from Hoover dam. If the VOLTAGE does not exceed ~14.5 volts, there is nothing in the circuit that can be damaged regardless of the current capacity (Amps) of the charging source. Ohms law states that Amps = Volts / resistance. The resistance of the components in your bike is fixed, so the only way to increase the current is to increase the voltage.

Bottom line, as long as the voltage of the charging source is limited to around 14.5VDC, no damage will occur REGARDLESS of the amp rating of the source.(sorry for the technical response, but as a 25 year electrical engineer I wanted to provide some immutable facts)

One exception to this is if the quad's battery has a shorted cell or cells. Then, when connecting to an automobile battery, there is the slight possibility of a very large inrush current from the car battery to the quad's battery, causing the quad's battery to grenade. This is a very slim possibility, but had to mention it.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MikeyBoyesq
ATV Racing
1
Nov 27, 2020 02:44 PM
TegraQuad
1) Engine problems..
13
Nov 26, 2017 01:40 PM
Dame0927
Test Your Signatures (sigs) Here!
1
Oct 29, 2015 10:13 PM
dmages68
Introduce Yourself
3
Jun 14, 2015 05:16 PM
1000gade
ATV Videos
0
May 27, 2015 12:37 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 08:18 AM.