pedgen stock car alt

[hiker]

had this car alt laying around--so i decided to try it on my pedgen..

stock alt no mags and not rewired--surprized me it kicked right off without even a batt hooked up to it--just had a piece of wire from field clip to batt lug on alt...

once the field coil kicked in i could slow down my cranking speed--almost to a crawl and still get power out..the drag was kind of high with the wire from field to batt lug on alt--so i hooked up a 30watt headlite to the field and batt lug--plus a solinode to

switch on a 50watt headlite for power out...[took some time to figure this all out as

i was blowing headlites out every time the field coil kicked in]..

one other thing i did was to take the pully off and make a smaller shaft set up[just a piece of pipe slide over the alt shaft..any way this set up is only good for about 100 watts or more--but it does power up on its own...with a bigger pully i could of course

get a lot more power from it--but then i would need a batt to excite the field coil..

even a 9volt transitor radio batt would work--sence you just have to only momentarly

charge the field coil--for it to kick in..i belive the open volts was close to 50v

thats with me pedaling almost full out..

one thing that did surprize me was the low rpms to hit 12v with a 50 watt load-even

with a 100 watt load not much more rpms were needed..[thats after the field kicked in]

not sure of the voltage rating on this alt -no markings on it voltage wise[thrift

store speical 5 bucks-looked unused]so it may be a 24v alt??coils look to be the same as a 12v alt.. might be could for a water wheel set up or a windgen if it was controled.heres a short clip- 3meg.

        http://www.otherpower.com/images/scimages/1236/car_alt.MOV

[hiker]

for a windgen it would have to be geared up somewhat--still not bad output for a standard car alt--i thought for sure it would need a lot more rpms..

might try a bigger pully on the alt --just to see what i get out of it..later..

[tecker]

If it's not slippin the smaller the better. Looks like fun . I just took the tire off a 24 inch .Is that a micro v belt ? That thing you did with field is interesting . Those  regulators are currrent limitors for the field . I was wondering what you could do with a higher field voltage . If you switch to the ground side and run the voltage up to 100 volt field voltage and pulse with high amperage . The backemf would would be close to 200 volts usable (Acumulated in a 150 to 200 MF cap)that combo should be enough to hold the field up and regulation is pulse timing . I'll have to see how the wattage stacks

up.

[hiker]

hey tecker..

with a smaller shaft it would be even harder to spin up to 12v with a load on it..

thats a flat belt on there..

i made a slightly bigger shaft for it[pipe]..plus i replaced the 30w headlite that

hooked to the field coil with a taillight bulb..now its a lot easyer to pedal when

theres a load on it..and i still dont need a batt to power it up..

 the more currant you apply to the field coil --the stronger the magnetic field..

not sure of the amp rating on this alt-65??--but theres no way im going to get that pedaling--so you want the amount of currant going to the field coil to be somthing you can handle--thats why i switched to even a smaller bulb--no sence in fighting all that extra drag--just for fun i hooked up a 400w 38v aircraft landing light--got way to bright to even look at--plus i had to pedal like a mad dog in heat...

not sure of what i can get out of it now--blew out most of my spare headlites..

guess ile have to borrow the amp meter off of my motorhome pedgen and find out..

its late here...heres a shot of the alt and wire hook up..

 

[tecker]

I like the bikes for a good work out I've been tring to work with a 1 hr 30min morning and 30 min evening  to work around nowind  no sun and down times to keep the main off ..Right now with my current setup it's like 1.5 hour into 1000 amp hr bank . No real problem ( too many late night meals and morning biscuits) I'll try a miro v belt .I've got a bunch of delcos with no regulator I'm going to check out .Keep posting.

[hiker]

try a treadmill motor hooked up to a exersize bike-should be good for a easy 100watts.

150w if your really jacked up..my 2.5hp treadmill works great on my test bed--even the 1.5 hp treadmill motor works great i can hit 10-15amps with that- 5amps for a easy charge-- made one for my motorhome--i just toss it in the back--saved my ass a few times when i left the water pump on or the furnace blower motor on to long[long winter nights] ..i replace the heavy flywheel on the exersize bikes with a bike rim--makes for a more mobile unit-and a flat belt fits right in there..

i to- really do need another hobby--this one is hard to break away from..

[hiker]

that car alt was fun to mess with--but a treadmill motor is a lot easyer to hook up..

in the end -the 2.5hp treadmill motor put out about the same amout of power as the car alt--with the pully i was using on the car alt--i supose i could get more power from the car alt using a bigger pully and using a batt to momenterly charge the field--

thats another test......................................it never ends.

[tecker]

Nop it never ends  but I'm thinking  that's a good thing . This stuff does take me over the top.