Duuds Build Off 2018 "The Donkey" aka "Eesel" [2018 Build-Off Entry]

My parents had this horse cart with skis you could swap on, that was pretty cool. We never used them(they never even came out of the bag lol). I always wanted to steal them and put them on a mower, but they got sold with the cart.

If you were going to make some skis, I think you'd want some spring steel for the runners(leaf springs are a good candidate). Regular mild steel might not stay polished so long and might get rough and provide some resistance. Just an thought.

Howdy!
From hell, im writing, maybe not, our temp is worse than hell..i imagine...its really hot.
A little update:
I was fiddling around with the lights and found that this looks pretty good.


Also added a switch and did a liltte "tidy up" on the wires, everything looks better now. For the switch i made a "plate" to fit it int the old battery indicator hole.

Then i had laying around a poly bush and that got also added to the donkeys seat.


Now there is one little thing, and that's the exhaust, i still have not found the muffler i like, matbe next week - i hope...i really need to fine tune the engine but without the exhaust...it quite loud

Help needed:
When i connect the red or plus wire, to my battery, that should be charging my battery...little but some sparks fly...wtf is that? something has a short? the same wires that come from undreneath the flywheel, before i understand they were connected straight to lights, but i added a switch. so help please, is that normal?

the wires coming from underneath the flywheel either need to be hooked to a regulator/rectifier then the battery (not directly) or power incandescent lighting.  Sounds like you might be hooking up un-rectified AC to your battery.  Not good.

I like the LED bulbs and those poly bushings might just save your back a tiny bit.

Crazy_Carl wrote:

the wires coming from underneath the flywheel either need to be hooked to a regulator/rectifier then the battery (not directly) or power incandescent lighting.  Sounds like you might be hooking up un-rectified AC to your battery.  Not good.

I like the LED bulbs and those poly bushings might just save your back a tiny bit.

Hey, can you give me some examples of "a regulator/rectifier" that maybe can be fitted to my donkey?

briggs and stratton p/n 394890 pretty cheap on ebay.  Here's a picture of that one and a couple other newer kohler ones in my shop

thanks mate, will look into it.

holy....first ones i found here in Estonia were 50+€...thats alot...


is there a difference between the regulators (in Estonian its called Pingeregulaator)? Can i use any kind of regulator? i found many from google and i was thinking that maybe i can fit others or there is a "must be a lawntractor" regulator? Maybe a generator one? maybe - https://www.ebay.com/bhp/atv-voltage-regulator

If you can get your hands on one for cheap or free.  I would try it out and see what happens.  Most I've seen have three terminals.  Two for AC, one for DC +, and the case is DC -.

ok, i will try it out...thanks for the advice.
now i have to get me a tester..

You don't have any kind of votmeter?  One with a diode check would be helpful here.

You can get cheap meters with diode checks and all sorts of cool features.

Are you looking at full regulator/rectifiers or just diodes? A diode shouldn't be more than a few bucks apiece. You can probably buy 10 of them for a few bucks.

if you mean a "one way" diode then i have it. I just did not add it, but as i understand, that would not change the sparks?

Did it spark while the engine was running?  It shouldn't when the engine is off.

Crazy_Carl wrote:

Did it spark while the engine was running?  It shouldn't when the engine is off.

hey
the sparks flew when the engine was not running...thats the concern

If the sparks flew when it wasnt running, that means you're feeding 12v back through the coil to ground. You really need that diode, it will stop that and turn the AC into DC to charge your battery.

What you think he needs about a 35-50V @ 5-6A? Diode.  Side with the line is the out.

I'm not sure what the factory ones are. Maybe 5 or 10a.

sparks when engine is off?

Do you think you might be putting 12v to your kill wire?

I don't believe the stator coil is hooked to ground unless you hooked up one of the leads coming from it to ground.

Crazy_Carl wrote:

sparks when engine is off?

Yeah.

Crazy_Carl wrote:

Do you think you might be putting 12v to your kill wire?

100% Nope

Crazy_Carl wrote:

I don't believe the stator coil is hooked to ground unless you hooked up one of the leads coming from it to ground.

100% Nope

...next post will explain everything.

So, i have a little explaining to do.
The sparks will fly if you dont add the "one way" diode to the positive wire, that comes from underneath the flywheel. This was a "gone through" in this thread already, i jsut forgot to add the diode. When it was added, everything went better than expected, no sparks and the battery is charging. Now, a little more exiting news...

The donkey is running and quite well. Now, i was test driving the donkey and suddenly one cilinder stopped to work...sound changed and power loss and so on...i did not get it, HOW...
So, i cheked the spark, fine, then i cheked the fuel, fine, then i cheked the compression with my finger...NONE. So things started to roll, i checked the valve springs, everything was fine, at first glance...then i had nothing else to do, i removed the cilinder head...:

How the F***CK?

I made some improvements also, Now when i switch the ignition on, the batt volts show, easy to see if the ign is on or off.


Also found a place for my machete!

Nice machete. Come in handy with those low branches, cutting them off while driving does seem more doable but may create more problems, be careful. Did you get the motor running again after digging out the bolt? Might be the air filter bolt or choke butterfly bolt, might be a good idea to check, LOL. Nice vaporizer too, I got one also.

That volt meter is cool! Where did you get it?!

RichieRichOverdrive wrote:

That volt meter is cool! Where did you get it?!

Here you go: https://www.ebay.com/itm/12V-24V-Car-Marine-Motorcycle-LED-Digital-Voltmeter-Voltage-Meter-Battery-Gauge/142509007737?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

why do you think you see rags covering carbs or intakes everytime they are wide open to the elements? for this very reason.

Glad you got it charging and the rear ammo box I really like a lot.  I want to do that on Ol Red.

Will make a little post someday, i have my exhaust 99% done, its not nice but for starters its ok. some pics will be coming soon...and some news also.

RichieRichOverdrive wrote:

That volt meter is cool! Where did you get it?!

Hey, did you add the voltmeter to your trac?