Yamaha batteries - Page 4

 



yeah, not a goldstar but a 500 for sure. as long as you find
top dead enter, you won't go over the bars. you may have had
a 441cc victor if it was a dirt bike. i own 4 thumpers now,
3 yamay 500 street bikes and an old bsa b50t.

 

On Mon, 26 Feb 2007 22:51:16 -0800, ©rkba@ca.rkba.cid wrote:


Actually a fully charged battery should be 13.2 volts if it is lead
acid. (Many maintenance free batteries are actually lead-calcium, and
run a bit higher). As a result, the charging voltage really needs to
get in the 14-15v range to provide effective charging.

Magneto provides spark, not charge. There should be an alternator,
most motorcycles these days don't use magnetto's, and haven't for a
long time. The main advantage of magnetto ignition is you don't need a
battery, EVER....

The starter power even on a 300cc engine is about 30 amps, much more
for larger engines. The wire run from the battery to the switch to the
starter would be too long, and require exceptionally heavy wire (6
gauge or so). So you can keep the leads from the battery to the
starter very short by putting a starter relay (technically, contactor)
right next to the starter, and then the start switch only has to
handle the current to operate the relay, a faction of an amp. However
if the voltage drops to low, it may not be enough to hold the
contactor in, so you hear it clicking. You close the starter switch,
the relay closes, the current draw from the starter however causes the
voltage to go to low to hold the contactor in, and it drops out,
disconnecting the starter, with the starter load gone, the voltage
comes back up, the contactor closes again.. repeat ad nauseum.....

 


|>On Mon, 26 Feb 2007 22:51:16 -0800, ©rkba@ca.rkba.cid wrote:
|>
|>>wrote:
|>>
|>>
|>>    So the magneto does recharge, but usually not enough...it should read
|>>some 12.8v as a full charge...12.4v means recharge, and 12v means a new
battery.
|>Actually a fully charged battery should be 13.2 volts if it is lead
|>acid. (Many maintenance free batteries are actually lead-calcium, and
|>run a bit higher). As a result, the charging voltage really needs to
|>get in the 14-15v range to provide effective charging.


    Your right on all that, I have tried them *batteries* at up to 15volts,
and that is VRLA called Gel,, but the Battery manual states Wet Storage which is
SLA Lead Acid....

    The manual cautions on overcharging above 12.8v, but they gotta be
kidding ...............then they state in the specs that 12.8v is the minimum
open circuit voltage as per all the other normal batteries...

|>Magneto provides spark, not charge. There should be an alternator,
|>most motorcycles these days don't use magnetto's, and haven't for a
|>long time. The main advantage of magnetto ignition is you don't need a
|>battery, EVER....

    The Charging System on the Majesty yp400t
-------------------------------------------
Charging System:
System Type                              A.C. Magneto

Model                                                F5RU (MORIC)

Nominal Output                               14V/27.5 A at 5,000 r/min

Stator Coil resistance/color            0.184 ~ 0.276 ohms at 20deg. C (68degF)/
                             White-White


-----------------------------------------

Rectifier / Regulator
Regulator Type                           Semiconductor,Short-Circuit type

Model                                           SH678-11 (Shindegen)

No-Load regulated Voltage       14.1 ` 14.9V

Rectifier Capacity                        22A

Withstand Voltage                       200V                

-----------------------------------------------------

    So the A.C Magneto is another word for Genetator/Alternator/Stator
Coil....we always get these terms mixed up because the manufacturer does..

Bob

|>>
|>>    If your going down to 9.8v overnight, the battery is toast and should be
|>>replaced, using the old battery as a Computer UPS backup battery were it will
|>>stay charged all the time..
|>>
|>>|>    Biggest concern now is that my stop&go commute spends too much time
|>>|>not charging (system doesn't put out enough voltage to charge until
|>>|>2000+ RPM). I've started taking the freeway route just to avoid idling.
|>>
|>>
|>>    That "tick, tick, tick" or more like a "ratchet" sound, is when the
|>>battery is too low and usually won't start at that point.....the sound itself
is
|>>some starter relay knock on newer bikes.
|>
|>The starter power even on a 300cc engine is about 30 amps, much more
|>for larger engines. The wire run from the battery to the switch to the
|>starter would be too long, and require exceptionally heavy wire (6
|>gauge or so). So you can keep the leads from the battery to the
|>starter very short by putting a starter relay (technically, contactor)
|>right next to the starter, and then the start switch only has to
|>handle the current to operate the relay, a faction of an amp. However
|>if the voltage drops to low, it may not be enough to hold the
|>contactor in, so you hear it clicking. You close the starter switch,
|>the relay closes, the current draw from the starter however causes the
|>voltage to go to low to hold the contactor in, and it drops out,
|>disconnecting the starter, with the starter load gone, the voltage
|>comes back up, the contactor closes again.. repeat ad nauseum.....
|>>    The single press of the starter switch "ratchet" sound from the starter
|>>relay is much different from the  starter relay "one click" in older bikes,
|>>which was difficult to notice at each press of the starter switch.

 

/remove_this_for_email/vampire@istar.ca wrote:


the desert eats batterys. you're lucky to get 2 seasons out
of one. so having 6 bikes, it's a nightmare...or was until i
learned to use capacitors to replace batteries. just wire
one in and everything works normally.
the only safety concern is the engine dying and losing the
lights. so if i am going to ride at night, i have a
"floater" small battery that clips on the downtube without
any mechanical fasteners. it runs the lights for 10 minutes
or so, enough to get off the hiway. it's a drycell and just
slaps on easily.
i do keep a battery on my 650 triumph. those are large and
will last 3 years. but on my 500cc single yamays, it;s cap
city.

 

On Mar 11, 10:51 am, some...@some.domain wrote:

I bet that works great on all these "modern" bikes with not kicker! ;^)