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I started a thread over on HSM but am curious what people here have used extra weed eater motors for or have ideas for uses.I wanted to test if one had enough power to run an alternator which could charge batteries and even maybe get AC out of it. I know on the 4x4 forums they talk about using extra alternators for welding on the trail. It was mentioned that the weed eater motor wouldn't have enough power to spin up the alternator to RPMS where it would be useful for welding. So I'd like to ask here if any one has used an alternator for welding, how big the alternator should be, how much power to turn the alternator, and what the welding limits are when using a alternator?I originally thought that the alternator would be able to put out usable 12V for charging batteries, AC current for running lights or small hand held tools, and have welding capabilities. Someone also chimed in that a second weed eater motor could be attached as well and used as a compressor. I am not expecting any kind of big numbers with using just a small weed eater motor but enough for emergency situations where anything is better then nothing.I am also interested in any other ideas for these motors besides RC stuff. Useful things. Here is a video I made today of a crude mock up test I did with the motor and honda alternator just simply to see if the motor was able to turn the alternator first off then still turn under load.[ame]http://www.youtube.com/watch?v=oZheBQ_VENs[/ame]
Reply:Welll aint that just something! nice work!. An idea i might include if you want to spin the alt faster and keep the rpms up.. use a jack shaft with small gear on motor side and large pully on alt side or vis versa .. might give you a 3:1 ration thus giving more rpm to the alt and keeping the rpm;s high enough on the 2 stroke to stay in its efficiency/ power band ... so when it does go under a load it wont bog the motor down out of its efficiency range . Just some thoughts! I like to see more on this really!Owner G&S Mobile Welding & Millwright Services, LLCSpencerville, Ohio Adult Ed. Instructor at Apollo Career Center Lima, Ohio
Reply:I could have reved the motor easily with just charging the battery. I only opened up the throttle about 1/10 just to keep the motor running when I excited the alternator. If something does work out I would get rid of the belt all together and run a strait shaft from the motor to alternator to eliminate any power robbing. it was just easier to test with the belt.
Reply:We use em for R/C plane engines if they got the giddy up to swing a prop. You could also use it to tow a Hi-start for gliders too. Just a thoughtBobI'm spending my Kids inheritance, I dont like him that much anyway!!!!!!Enuff tools to do the job, enough sense to use em.Anybody got a spare set of kidneys? Trade?
Reply:VPT - If you could somehow find a KW rating for the engine, performance would be easy to calculate from there.
Reply:makes a great little motor for pushing a small aluminum boat around the pond or small lake. just attach a trolling motor prop to the end of the shaft and attach it in an oarlock on the back of the boat.225NT bobcatAEAD200LEScott 125mm175, mm252 w 30A, PT225mm211, TA 181iHyper Therm 380, cut master 529100X & XX, Digital Elite6 Victor setssmith little torch, meco midget kalamazoo band sawsteel max saw evoulution circular saw
Reply:Originally Posted by denrepVPT - If you could somehow find a KW rating for the engine, performance would be easy to calculate from there.
Reply:I normally use them to keep my right shoulder and elbow inflamed from pulling on the rope. I've got two out in the shed that are being used as mud dobber housing. I've had others that I used to hold down loose paper and stuff on the way to the dump. "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:and they MAKE A GOOD TRIP HAZARDno matter where ya set em downidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:i always woundered if they were powerfull enough to make a motorized bicycle. that would be kind of fun.
Reply:And I have always wondered if you couldn't build a tiny gold dredge with one.Tim
Reply:Originally Posted by timrbAnd I have always wondered if you couldn't build a tiny gold dredge with one.Tim
Reply:in the late 60's early 70's Jiger made the first 6x6 amphibious ATV's and it was powered by 2 two stroke chain saw engines. no reverse..Tiger Sales: AHP Distributor www.tigersalesco.comAHP200x; AHP 160ST; MM350P, Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma. For Sale: Cobra Mig 250 w/ Push-pull gun. Lincoln Wirematic 250
Reply:I saw a guy at the beach who made a portable blender out of a weedeater motor. He even put motorcycle handlebars on it.
Reply:make a water pump for emergency basement floods and sewer back ups , or make port-a bed vibrater for the old lady ......... might be kinda noise though , but then again u wont have to listen to her ....................>Innovations are what i leave behind for History
Reply:Originally Posted by morgaj1I saw a guy at the beach who made a portable blender out of a weedeater motor. He even put motorcycle handlebars on it.
Reply:Originally Posted by VPTI don't know much about the motor. I am assuming its about 30cc and 1/5-1/3hp.A load test was suggested so whipped out two 55w fog lights and 4 headlight bulbs two of which are 100w and the other two 55w. All sure of myself I hooked them all up right off the bat and started the motor, hooked up the jumper wire, then turned the lights on and killed the motor, lol. So I went on starting with the 1 55w fog light and working my way up. I was able to get two 100w bulbs and one 55w fog light on and keep the motor running steady. With the 255w draw the meter showed a constant 13.0v.
Reply:This motor was a guinea pig for a few brilliant ideas I had over the years including oxygen injection. lol I assumed the motor is weak from all the things I have done to it but maybe it is better then ever? lolDoing some reading it looks as thought he alt. outputs 3 phase AC which is rectified. They say you can't run AC "tools" strait off the alt windings because it is not 60 cycles like house current. But I am determined and believe I can run one winding to a light or tool and adjust motor RPM to get close to 60 cycles. Sure I could run a dc/ac converter but I am shooting for cheap, small, and light. bare minimum to make stuff work.Question I have though is you take hot current off one leg in the alt. does the neutral side just get grounded to the alt. case like the negative with DC power?
Reply:Didn't get a real lot done today. I spent most of the day welding and machining the shaft snout nuts so I could use a rubber hose for the coupler. After getting it all together I realized the stock starting recoil would be needed. Now the rubber coupler I built is too big the hole in the recoil cover and the cover cannot be opened up or cut or it won't work. So now I am thinking of using a ball and pin joint like in the first pic below. I figure the unit weighs about 17 pounds as it is now.[/QUOTE]
Reply:JPMiller thats There used to be a kit for a weed eater motor to a bike. It was basiccla a clamp on hinge the clamped onto the bike frame. It had a pto cable off a truck to operate some of them. It had a 1 or 1.250 inch diamer peice of round stock on the crankshaft that was knurled. To start it you just engaged the wheel to the motor and pedal. It worked pretty good cept I was a fatass lol. I have a welding book from 59 or 60 that shows a few Mcculloch chainsaw company sold a litle welder like that that had a 20 percent duty cycle and a pretty decent amperage.
Reply:Originally Posted by jpmilleri always woundered if they were powerfull enough to make a motorized bicycle. that would be kind of fun.
Reply:On HSM we have been discussing the AC side of things and I don't think it is going to work out. If I want a 110v AC outlet I will have to use an inverter and small battery. Not sure the AC outlet is worth the extra parts and weight but we'll see what stuff looks like as it comes together.For right now I am just shooting for DC power and a compressor.I am going to be testing out some different drive ratios today to see if I can find the sweet spot.
Reply:A belt driven compressor might not be a bad idea for small jobs like filling tires. Try to find either an A/C compressor or one from a truck with air brakes/suspension.You'll have to find some way to add an unloader to the A/C compressor. You *could* just use a relief valve, but then your engine is still working at full load even after you've hit your top end pressure.The truck compressor should already have an unloader. Make sure you get all the parts for it. The ones I've seen have the unloader bolted to the side of the compressor. It just holds the intake valve open when you reach the desired pressure. Then the compressor just breathes in and out of the intake without pumping any more air.This should beat the pants off of those junky 12v compressors.Dynasty200DX w/coolmate1MM210MM VintageESAB miniarc161ltsLincoln AC225Victor O/A, Smith AW1ACutmaster 81IR 2475N7.5FPRage3Jancy USA1019" SBAEAD-200LE
Reply:Interesting. I will be following along. Subscribed!We are on our way to being farmers! Our site is always under construction so check back often for updates. http://www.philosophyfarmstyle.com/
Reply:Put it back to belt drive today and got a nice little 3 rib belt. With the recoil where it is the shaft has to be about 3.250" long with the pulley hanging off the end. I didn't want to run it to much like this but I wanted to do one quick test. First I set up 2:1 and I hooked up the two 100w bulbs and two 55w fog lights. With the 310w load I was just about able to keep the motor reved. I thought it would have done better but I will move on to bigger alternator pulleys and see what happens.Andy, I used to have (gave it to my brother) a compressor built using a truck two cylinder compressor and one of the air tanks off the truck. It was my father in laws, his dad built it. It is nice and quiet and very smooth but takes quite a bit of power to drive it. Are talking about some other single piston pump? The weed eater only puts out like 1/2hp even with pulley reduction it doesn't put out a whole lot.Originally Posted by RbeckettWe use em for R/C plane engines if they got the giddy up to swing a prop. You could also use it to tow a Hi-start for gliders too. Just a thoughtBob
Reply:So this thing is putting out 'about' .3kw @ 13v DC nominal... that's pretty freaking impressive!What would be the next step up? I'd love to trade in one of the deep cycles that sits in my john boat for a wee motor/alternator setup (muffled better.. much better!). My rough calculations say that my 40 lb/thrust minn-kota endura C2 runs about 750w under full load (and partial load since it uses !@#!@$ speed coils instead of PWM, damnit)
Reply:Originally Posted by VPTAndy, I used to have (gave it to my brother) a compressor built using a truck two cylinder compressor and one of the air tanks off the truck. It was my father in laws, his dad built it. It is nice and quiet and very smooth but takes quite a bit of power to drive it. Are talking about some other single piston pump? The weed eater only puts out like 1/2hp even with pulley reduction it doesn't put out a whole lot.
Reply:Originally Posted by WiregeekSo this thing is putting out 'about' .3kw @ 13v DC nominal... that's pretty freaking impressive!What would be the next step up?
Reply:Originally Posted by AndyAOnes I've seen are single cylinder. If the rings and valves are in good shape it should make pressure at low speed, but with lower CFM. I was troubleshooting the one on my truck the other day. With it deadheaded into a gauge, I could turn it over by hand and get over 100psi. So just find a ratio where it runs slow enough the weedeater motor can pull it.
Reply:VPT, where do you live? I need to know which direction to head whe the apocolypse comes.There are no problems. There are only solutions. It's your duty to determine the right one.Hobart Handler 210Airco 225 Amp MSM Stinger
Reply:Originally Posted by ThorsHammerVPT, where do you live? I need to know which direction to head whe the apocolypse comes.
Reply:A guy I used to work with made gas powered blenders powered by weed wacker engines.
Reply:Might make that attachment for this project! Then at least when all efforts fail at getting the vehicle going I can sit down with a vodka smoothie.
Reply:Think of the possibilities. When things are slow you can keep the weeds from growing around your welder Gordie -- "I believe you understand what you think I said, but I'm not sure you realize that what you heard is not what I meant."
Reply:Had a little extra time today between projects and did a little on the weed eater project. Turned a lexan disc for a ground protector, also turned a pole terminal for the jumper cables to connect to. I figure the ground side could be connected anywhere on the frame and doesn't need a pole. Started on a couple switches like the alternator excite 12v and engine kill switch. I was thinking it would be neat to have a small light right on by the alternator switch. It would illuminate the switches and work area. But without a battery how would you light the bulb (12v?) without a battery? Say you are using the unit to pump up tires in the dark so you wouldn't have a battery hooked up to use the alternator so it wouldn't be outputting anything. Ideas?Some pics. Also did up a quick throttle today.
Reply:Me and my friends attached a drill chuck to one. I brazed some pieces to the bottom of the wacker and shortened the shaft using square rod as a drive "axle." We used a brakes from a bike for the throttle.We named it the drill-all since it can pretty much drill through anything. It sent a standard wood drill bit through a brick, stone and 1/4" of steel.Trying to find the picture, it's hiding somewhere on my phone.
Reply:Originally Posted by llamafurTrying to find the picture, it's hiding somewhere on my phone.
Reply:And I thought those were just used to annoy ones neighbors at 7 am saturday morning (especially the hungover neighbors). My neighbor has a Homelite chainsaw motor that he claims was built in 1966 and was part of a generator set that was used to power or charge radio batteries in viet nam. I dont know how true that story is , but I do know that the thing is built hella tough. Looks mil spec when you look at it. I am thinkinf something along these line could power one of my ex girlfriends lil toys, being that she was a rather insensitive b%^&h...........did I say that? No more beer before welding web..... |
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发表于 2021-8-31 23:33:52