Battery — Ducati Up North

4 Фев 2015 | Author: | Комментарии к записи Battery — Ducati Up North отключены

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Shazaam’s Tech — What replacement

A useful technical article guest contributor Larry of San Diego CA (aka Shazaam!).

of your electrical system a hydraulic analogy. Consider the is a six foot diameter one foot wading pool full of At the bottom of the pool is an three diameter drain pipe with a valve.

Pumped enters the top through a one inch pipe.

Using this

Discharge current is the flow of water out of the pool

Charging is the flow rate of water the pool

Battery capacity is the of water in the pool.

Battery is the water pressure at the bottom of the

Operating Condition: Storage

The valve is shut but the pool a little (current). Every so you put some more water in charging) the pool to make-up any level (voltage). Over the pool leaks more and

Operating Condition: Startup

flows (discharge current) out the open drain until its valve is quickly shut and the water (charging current) into the pool. During time the pool has lost a or two of water and the water level drops a little.

Operating Condition: Normal

Water enters the pool than the water flows out the After a while, the pool level (voltage) rises and overflows (fully charged

OK, so what happens in this if you use a smaller battery?

Instead of a six diameter one foot deep pool, suppose you have a foot diameter one foot washtub.

Operating Condition:

The washtub leaks at the same so you put in some more water. the washtub is smaller the water (voltage) drops faster so you to full (trickle charge) it up more often and for longer of time.

Operating Condition:

Again, water flows out the open drain. But now the water (voltage) has dropped much due to the smaller amount of water by the washtub. The volume of water from the pool and the washtub is the same.

Operating Condition: Running

Again, water faster than the water eventually overflowing the washtub, the same amount of time as

The principal advantage of using a battery is to be able to restart If you regularly don’t ride enough to recharge fully restarts, stay with a capacity battery. Deep will reduce battery

A lower amp-hour battery need to be trickle-charged more

Standard battery 1994 2000 model years:

YB16AL-A2 (16 AH, 200 CCA, 11.5

The principal advantage of using a battery is to be able to restart and to deliver sufficient current to the starter motor. If you regularly ride long enough to fully between restarts, with a larger capacity A lower amp-hour battery need to be trickle-charged more

The chance of a deep discharge reduces battery life) is with smaller batteries. the lower the temperature, the lower the that can be supplied by any battery. voltage is only an indicator of level, and has no relationship to a battery’s to deliver an adequate starting

So early-916 batteries are rated at 200 CCA, the current it can supply for 30 at freezing temperatures. More at riding temps.

Consider also, that the pre-1998 bikes have an with a lower charging output, so they’ll take to fully recharge the battery. A 30 amp charging current is one contributing to why Ducati voltage regulator/rectifiers and wires fail prematurely.

I know the exact specs on the starter motor, but in general, starter motors draw 30 amps under no load rpm) and around 85 amps typical starting torque for unmodified motors. However, figure can briefly rise to 300 under a stall condition of the initial start requirements of a compression motor.

In 2001, all the were fited with a starter motor gear that drew less and made it possible to start the using a smaller battery. The gearing on the early bikes are not suited to the smaller batteries.

Standard battery 2001 200X model years:

Ducati 125 T

YT12B-BS (10 AH, 125 CCA, 7.6 lbs.)

For the bikes, and for track use of early the weight-saving battery-of-choice is the sealed and AGM maintenance-free Yuasa YTZ7S. the same size as the later battery.

Yuasa YTZ7S (6 AH, 130 CCA, 4.6

So if you decide to replace a 916 battery Ducati engineers say should 200 amps with a battery delivers 125 CCA, expect to your charging system and it on a trickle charger.

The standard for the 1994 — 2000 years, Yuasa YB16AL-A2 (16 AH, 200 11.5 lbs. 8.125 x x 6.4375) is actually a very choice. It’s only is that it requires attention to level.

Here are two maintenance alternatives I’ve found have better specs:

F19-12B (19 AH, 200 CCA, 7.13 x 3 x

Odyssey PC680MJ (19 AH, 280 CCA, lbs. 7.3 x 3.1 x 6.7) (dry technology, my personal choice)

The advantage of using a larger battery is to be able to restart When you don’t ride enough to recharge fully restarts, a larger capacity is an advantage. A lower capacity will need to be trickle-charged often and the chance of a deep (that reduces battery is greater with small ones.

Further, a battery’s drops when it gets so when you ride in cool a smaller capacity battery have an even smaller for starting at low temperatures.

Consider also, that the pre-1998 bikes have an with a lower charging output, so they’ll take to fully recharge the battery. A 30 amp charging current is one contributing to why Ducati voltage regulator/rectifiers and wires fail prematurely.

In the bikes were fited a revised starter motor ratio that drew current and made it possible to the bike using a smaller The starter gearing on the early are not well suited to the smaller

All non-stock aftermarket batteries require some modifications to the system for installation. The most problems are that it doesn’t fit the battery tray, the terminal are switched negative to positive, turn it around) a wrong post connection type, and the retaining clip has nowhere on the casing to hook onto.

For I have an Odyssey PC680MJ installed in a 916. The installation rigging a custom hold-down and shimming the battery higher in the battery holder. Still, the width dimension will it to touch the inside of the fairing and it slightly.

It is also heavier than the battery but he advantage is that it is capacity than stock and don’t discharge in storage as

BTW, I installed the Odyssey in May 2001. It’s still strong.

Please note Ducati-UpNorth.com cannot accept any for the accuracy or content of this Visitors who rely on this do so at their own risk. If you are unsure worth contacting your Ducati dealer who will be to help.

Do not attempt a repair or if you do not have the correct tools or to do so.

Ducati 125 T
Ducati 125 T
Ducati 125 T


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