help interpreting figures.

[jambo]

Originally Posted by noob-saibot

Ok so ive had the reg/rec issues and read the jiymassive thread on testing. i got a new reg/rec to no avail. Then i did the direct wire to battery mod* and have been running the sv like this for 2 months. Battery wouldnt turn over the bike on saturday after 5 days of freezing temps and no use, so got it charged up yesterday. Decided to do the testing again as im still not fully sure my charging woes are over. So here are the figures:

1 : battery - 13.10 after 3 hours off charger.

2 : idle no lights - 14.29.
.....idle dims - 14.10

3 : 5,000rpm headlights - 12.3 / 12.8 fluxuating between rapidly
.....5,000rpm dims - 13.8 pretty steady

4 : idle and headlights - 12.74

5 : idle no lights - 14.18

6 : off - 13.18

7 : after 10 mile spin with dims 13.19 dropping to 13.

How do these read to you??
Am i being paranoid or did maybe a mixture of too short a spins and 5 days freezing with no use just take the kick out of the battery? It was reading 12.1 and dropped to 11 under load on saturday.

*Wires directly from reg/rec to battery pos and neg were taken from an old fridge power cable. Is any old wire ok or should i have used specific? (electrical newbie)*

All help appreciated as im just confusing myself at this stage,
JB.

Those figures all look fine to me.

Jambo

Originally Posted by jambo

Those figures all look fine to me.

Jambo

Are you sure jambo? I know the idle figures look ok but I thought the voltage should go up under load of headlights and at 5,000rpm - like in the 14v area? Is it something as simple as initially, a few months back, i may have been suffering from reg/rec failure under load and dodge wiring and now ive just cured the wiring side of things, cos at idle the figures seem ok, but the reg/rec is still underperforming under the load of lights?

[ophic]

simple test - rev the engine with the lights on. They should get perceptibly brighter than they are at idle. If not, the alternator isn't doing its job. Might be easier to do this test at night.

Originally Posted by ophic

simple test - rev the engine with the lights on. They should get perceptibly brighter than they are at idle. If not, the alternator isn't doing its job. Might be easier to do this test at night.

Will try it, but i have tested the alternator previously and it was putting out 70? (i think, but i cant remember fully of the top of my head) on all 3 at 5,000rpm which was within the guidlines.

Sounds fairly familar to my issue, checked everything bit by bit as described in manual, load tested the generator and all seemed to be okay, bought a new battery Yussa YTX12s or something like that (220CCA) and bike is runnign great, touches wood....

Although mines a Pointy....