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scratch1676
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« on: November 18, 2008, 05:52:26 pm » |
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I posted this because I didnt see a topic on PWM's and Efie's and ect.
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always buy a good bed and a good pair of shoes because you will always be in one of them.
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scratch1676
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« Reply #1 on: November 18, 2008, 06:54:42 pm » |
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always buy a good bed and a good pair of shoes because you will always be in one of them.
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randy
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« Reply #2 on: November 18, 2008, 07:09:23 pm » |
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cool stuff, I'm fixing to add another alternator to my truck "one of these days" I got one of those 30 amp PWMs but I don't think It'd last long at 120 amps hahahaha yer garage is like mine, no room for a vehicle hahahah unless there's room behind that parts washer, torches, washer & dryer, is that a hood open in there?
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Tink
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« Reply #3 on: November 18, 2008, 08:38:02 pm » |
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Scratch,
What a marvel idea! I never thought of using the same belt for both alternators! I also have a Toyota ('89 4x4 22R-E). Ive been fighting the 02 sensors. Now I gotta get under there and figure how to get that other alternator in. What kind of results are you getting? A few months ago I had one of those $30 PWM's from ebay and I fried it. I'm not messing with PWM's again till I get my exhaust worked out.
Tink
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Old Tink proberb: Don't hesitate, just do it!
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Bob
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« Reply #4 on: November 18, 2008, 10:00:51 pm » |
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Scratch !
that Garadge definately looks like a fella that has too much to do and not enough time to do it ! <GRIN> hang in there !
...Wish I had such a place to work in ! HAHAHAHAH
...
I hate to say this but one belt to run 2 altenators is gong to go through belts like no tomarrow !... I've even seen 2 belts on larger altenators... but never one for 2
......good luck on that !
...
I figured I'ed use the Airconditioning v belt to turn mine...sense I have no airconditionier
...that leaves one belt per alt that way, which is a bunch better in my book
...but what ever works ! no holds barred in this game ! HAHAHA!
...
Bob.......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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Bob
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« Reply #5 on: November 18, 2008, 10:08:34 pm » |
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Hay Scratch Could you post a Pic of the generators in the back of your truck Please !?
I'ed like to see how you got that setup...
and sense you have it in the truck like that whats your MPG and stuff ?
what are the cells...looks like ya have 2 of them big dry cells eh ?
...looks like you have it up and running anyway... any sujestions to us guys lagging behind with their Toyota Pickups ? HAHAHAHA
Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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scratch1676
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« Reply #6 on: November 19, 2008, 12:48:18 am » |
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ok for the shop its a mess I have some rental property and I use the front half to keep stuff related to housing and such. I use the back half for auto's, projects, tractors repair and cutting, welding, parts washing painting ,ect. Randy I am going to let you in on a secret, I bought two Pwm's they would only handle 30 amps and I know that just wasnt going to cut the mustard. I took the pwm and pulled off the heatsink and the mosfet and just relocated them outside and replaced the mosfet and heatsink with alot bigger one to handle upto a 100 amps continous. alot easier than building the whole thing. like I said earlier I dont have a concrete ideal for the box that contains the heatsink and mosfets in it that sits out side next to the cells. I am worried about rain and moisture getting in there and messing the thing up. Bob you are right about the belt issue, so far I havent put both alternators under a good load. I have used the single belt for about 3 weeks and the new alternator burn out because the big tractor battery laying in the back of the truck was down and the alternator tried to recharge battery and run the cell and could not handle it. I now have rebuilt the 130 am delco and got the new 150 amp original replacement put in and surprise the original replace dont even work. ( my luck ) so I will take it off and see if I can fix it and if not send it back and beg for a replacement. My output which everyone always wants to know today was this. 50 amps with pwm on one cell 12x12 inch plates 1/8 plate gap with recirculating pump, pumping the electrolyte mixed with hydroxy gas out of the generator and into the bubbler/reseviour. Hydrogen and Oxygen gas float to top of bubbler/reseviour and out a hose to the engine breather. I measure gas output my removing hose from top of the bubble and lay it in a bucket of water and test with some kind of liter bottle. a 1.25 liter bottle filled up in 12 seconds running one of my twin cells. I have not increased my mix rate of potasium hydroxide and wide open the pwm just moved my amperage to 56 amps without the pwm the amps were at 80 amps on one cell. so I have to ponder on that for awhile I will feel in more later. I am getting sleepy you guys throw out some ideals on this weatherproof box I want to make. I read alot hear and alot of you come up with good stuff.  the setup looks like this for now and the cells are 12x12 1/8 inch plates buna gasket material 11 plates each makes of ten cells positive position on plate number 6 and neg position on 1 and 11. I have the cells circulating thru the bubbler to control the foaming and the electrolyte pushout from the Tero Type cells when you put big amps on the cells they want to puke up the electrolyte out the gas hose. I just let them do it and run it back to the reseviour/bubbler the gas seperates by moving to the top of the bubbler and the electrolyte just gets pushed back in thru the bottom line of the generator. |
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always buy a good bed and a good pair of shoes because you will always be in one of them.
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Bob
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« Reply #7 on: November 19, 2008, 04:35:12 am » |
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Yup,YUP ! thats the way to do it on the big cells like that just let it push out the electrolite and let it curculate it ... I call that the flooded Cell method and it works a treet!
....
Sounds like your getting good production, but I havn't done the math so I can't tell without
knowing what LPM it is <GRIN>...
at one time I was all set to build some 12"x12" cells but then priced the stainless steel and at $28.99 each I kind'a figured I'ed find some other way !
... sense then I have found much cheeper stuff...304 stainless is something like $8.98 each
so I might give that a try !
...
take your Mossfet and make a dam around it with tape and cardboard and fill the entire back of it with clear silicone rubber the 20 year type from the hardware store used for calking and glue... and leave it to dry for a few days...
it should then be impervious to moisture and viberations... I have done this a few times on projects on my motorcycle and it works good... till you have to work on it ... then its a major Pain in the butt to get off. !
...in other words cover the components completely... as long as the Mossfet is already connected good to the heat sink the Silicone shouldn't hold in too much heat... but it will some ...no doubt !
its hard to make sire it all flows out level but do your best because you want to be able to see the components and see if they turn black and stuff when your truble shooting it.
... a thin layer is all you need but I put about 1/2" on my unit and it worked very goos from then on... till I burned it up one afternoon when I hooked it up wrong ( it was a voltage regulator unit I made up)
... I need to make another one up but it was such a long time ago and I got all my parts from radioshack way back then ... now all they carry is diodes and batteries !
...
strange how Honda aleayse has a problem with their voltage regulators and want to charge you over $200 bucks for one ! ...
My 1100 Shadow has the Voltage regulator burned up in it and I need a new one... I can get one from the net for $99.00 but still thats alot of money ! the problem is its both a rectifier and voltage regulator...the one I made for my 305 Dream was just a regulator
... this one is a bit trickier... thats why I havn't made it yet !
if I screw up and burn up the altenator on that thing its $600 bucks to START...
... I have to ask myself why I have such a bike when the parts for it cost 2 times as much as a 750 !!!!! .... just don't make sense !
HAHAHAHAHAHA
...oh well it sure goes good though ! HA !
...
Bob.........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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hg2
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« Reply #8 on: November 19, 2008, 04:42:33 am » |
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« Last Edit: November 19, 2008, 06:22:32 am by hg2 »
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Bob
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« Reply #9 on: November 19, 2008, 04:48:15 am » |
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I don't see a POP off cap on that resivore/bubbler...Tank... I'ed hate for that tank to blow up... perhaps a 2" hole in the top with a self expanding pipe plug in it  or even a big CORK ... I asume you have another bubbler under the hood eh ? ... well done very nice looking setup ! and thank you for the pic ! Bob..... |
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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Tink
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« Reply #10 on: November 19, 2008, 06:50:00 am » |
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Scratch,
I've been playing with the idea of mounting mine in the bed also and will use the plaxtic tool box I have back there to put everything in. It is weatherproof and they arn't that expensive. It will also hide the unit form vandels. Good luck! Keep us posted.
Tink
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Old Tink proberb: Don't hesitate, just do it!
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Bob
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« Reply #11 on: November 19, 2008, 07:09:33 am » |
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Tink:
what I like about Scratches system is his use of the electric pump !
with the pump you don't have to have the Flooded systems Tank higher than the output
on the cell... that a convienience in mounting the stuff !
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However I think Scratch is still way under powered for those big Cells he has....
he should be able to run the truck on 100% Hydroxy with that setup but it will probly take at least 150 to 200 amps to do it ....
so he'll probly have to add a radiator to help cool them down and then figure out how to run the engine on 100% hydroxy gas too
....
Bob........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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scratch1676
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« Reply #12 on: November 19, 2008, 08:52:50 am » |
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bob your right on the money with the radiator plan. I plan on running the electrolyte up front thru a radiator then back again to the resevior. I was thinking stainless steel tubing with a ferrell or flared end to fit the radiator. I have located some plastic radiators that might work. The pump in the picture only has a flow rate of 1 gal a minute and it works well for circulating the electrolyte. From reading some of the replies some didnt catch on that the one tank in the picture acts as a resevior and a bubble together. the electrolyte level is kept close to the top of the tank and the hydroxy re-enters the tank close to the bottom. So when the gas circulates the hydroxy just bubbles to the top and out the hose mounted on top of the tank. I have not installed a pop off ( not that I wont ) but the fittings are all plastic and the top fitting is just hand tight and the tank is all stainless steel. I have pressured tested my tank to 300 psi when I built it. I used a hydro tester out at work for that. I am hoping the plastic will give way before the stainless so I should not have a bomb here if something went wrong. I have had a flashback once and all it did was flashback to the top of the tank and blow my hose off going to the engine. I agree with everyone that maybe I need something somewhere on the thing. I also want to install a port for a temp gauge, you can do alot of things with measureing that temp of the electrolyte in aspects of control. For the most part its still a plan in progress when I get all the wires and stuff mounted in that outdoor box you wont see those cheap amp meters and relays and sloppy wireing it will all be neatley in the boxes. and the hydroxy hose from the top of the tank needs to be rerouted so its not between the bed and the cab like bob stated earlier. Thats why I like posted my stuff here because I enjoy letting others fix it for me. you guys do come up with some good ideals and some time you spark this old brain of mine. the most production I have ever gotten out of these cells was 500ml in 3 seconds thats in my math thats 10 liters a minute. I took a big Cat battery charged it up all the way and hooked it directly to one of the cells with about 20% Koh in the water. I cant tell you how many amps it was because I didnt have no way of checking the amps when I did it. Since that time I have not been worried about the cell themselves but the electronics and the power issues and heat to the cells is what I need to address. I did put a small video on youtube that shows very good production with just the battery hooked up to one cell. the battery in the video was not charged all the way but the production was still exciting to me on just one cell. Just go to youtube and search for scratch1676 or maybe just scratch and you will see it.
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always buy a good bed and a good pair of shoes because you will always be in one of them.
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randy
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« Reply #13 on: November 19, 2008, 09:27:09 am » |
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hey scratch, your garage looks great, I think Bob & I have compairable garages, little trails through the stuff to get around hahahaha I got so much stuff that I just can't bring myself to get rid of. I'm actually embarassed by it.
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Manta
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« Reply #14 on: November 19, 2008, 11:38:51 am » |
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Scratch,
how about a quick diagram of that PWM. And what mosfets are you using ?
Manta
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Good questions have a sting in the tail.
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