Hi Flux.
Thanks for taking the time to do these tests. Was the test alt conected directly to the battery or was it prossed through a charge controler of some type. If it were through a charge controler would it be posable to do the test with batter only.
If this is to much troble I understand. My concern is not having the alt directly connected to the battery post, there may be some influence that restrics the results I'm getteing.
Take for example your test #1. It shows quite a loss in either delta or jerry riged with the rpm remaining the same.
I know the input power would be more fore delta or jerry riged but your RPM has not changed. When I run the same test in 3 direant alt delta/jerry riged had conciderably more power than star and my rpm did not change either.
I know that the power in would be conciderably more in delta/jerry riged. I did not measure that but my RPM was constant just like yours.
If we are both testing the same way what accounts for my #s being diferant than yours. I know its not keeping the voltage to a narrow band. That would not explane our diferances.
I've started the small wind tunnel test. I have a large covered patio area. Under the patio area I have an 8ft wooden picnick table. I positiond it directly below a rafter and placed a 2"X6" between the table and the rafter and another at the other end of this 8ft long table.
I have a 2.5 hp tredmill motor mounted to the 2"X6" at one end and another 2"X6" at the other end. That end will hold the test alts.
I have a 4000 watt 120 volt Variac and a 50 amps 120 volt conection to power the variac.
The tred mill motor is 130 volt dc, 3050 rpm. I've mounted a 24" comercial air mover blade to the motor. I test fired the fan today and at about 33% on the variac the thing sounded like a Cesna getting ready to take off and the wind was quite strong.
I should be able to vary the wind from 0 to ? mph.
I lost my littel RS hand helt anamometer so I'm trying to repair my Oregon Scientific that went down when my tower went down.
If that dosent work I'll just use the referance #s on the variac dial to compair and use fore ?mph referance.
I'll try to test all 3 alts. The load will be a 2 volt battery cause these test alts have very low voltage outputs.
If things go right I should have some test #s tommorow?
JK TAS Jerry