Lookin for some info on an engine

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Kaptain Krunch

Kaptain Krunch

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Well i got this 8hp wisconsin robin for free a while back, along with a 3.5hp briggs (both horizontal). The briggs burns oil, and this doesnt have spark. At first i though it was a CDI style ignition, like a dirtbike or sled would use, but its not, its got the normal coil pickup like you see on most engines, its just set up weird. There is a jumble of wires, theres two boxes on the outside, one is for the low oil sensor, the i have no idea? Any info i could get on this engine would be great, wiring diagrams, manuals, anything. I took pictures of the model numbers and whatnot also.

Coil

Charging maybe? dont know...


Not exactls sure what this is?

Two wires coming out of unidentified box, theres also two coming out of the pickup coil.


Low oil sensor plug thing

Built in gear reduction box, i'm planning on using it on my go kart, with belt tensioner clutch (since a centrifugal, or cvt would be a paint to set up).


Model

spec number

overview, the guy told me it was 8hp, but now that im looking, theres nothing saying what size it is? looks substantial, so i dont doubt that it is.



Long thread for a little problem, but i figure the more info i give the less questions ill have to answer.
 
Kaptain Krunch

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its got a 6:1 gear reduction, maybe even 7:1, counting teeth on a really big ring gear is hard lol.
 
Kaptain Krunch

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Ok, i tested the coil and its got like 70k ohm resistant. I'm not sure if thats normal or not. But another thing i was thinking of, is maybe the coil needs an external power source, such as the other winding that is unknown? The other winding goes directly into the low oil sensor...but the low oil sensor also says NGK on it? maybe im just confusing myself...


By the way, anyone can feel free to chime in, anytime haha...
 
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frederic

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I know little about that engine but I'm going to forward your pictures and question to one of my technical lists, as a lot of the guys are into smaller engines (mostly for non-kart purposes).

From running that list for almost 20 years now, I can tell you most to all of these guys consider Wisconson/Robin to be best of breed. So once you get the thing going, you should be very pleased with a very torquey engine.
 
anderkart

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I'm guessing you've already checked, but Is the oil level completly full?

I hope it ends up being something simple and easy to fix there Kaptain.

ps:
Hey, for some reason... I always kinda figured you ran motor cycle or sled motors on your karts ;)
 
Kaptain Krunch

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So i found manuals and wiring diagrams, but not im just as confused as before? The one i have is called a PIT (pulser ignition transistor) ignition system, It shows a diagram exactly like my engine, except what is the PIT unit? is it the low oil sensor? im more confused than ever...
 
anderkart

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Man, looks like whoever designed that system went to College too dam long... ;)

I could be wrong, but I'm thinking all your PIT wiring, components and oil switch might just simply be an over engineered kill switch system. It shouldn't hurt anything to unplug everything from your ignition magneto, reinstall the flywheel and see if you suddenly have spark again. If it does, I'm thinking you'll find that one (or both) of your 2 small Magneto wires will function as a kill switch wire just like a regular 5 horse Briggs would have.

ps:
I found some other/simalar Robin model schematics here: http://www.smallenginediscount.com/1193P211.pdf
 
Kaptain Krunch

Kaptain Krunch

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Yea, you may be right, but i really have no idea, this whole **** thing is wayyy to complicated, why couldnt they just go with the good old fasion points/condensor style ignition?

anyways I did voltage testing for the coil here are the results. I had one probe on the plug wire one on ground.

Neither coil wires attached to anything - 210v AC peak

Red wire from coil to red on What i assume is PIT box, and Black to Black on PIT box - 160v AC peak

Just the red wire to the red on the PIT box - 210v AC peak

Just Black to black on PIT box - 165v AC Peak

These tests were done by spinning the flywheel with my drill.

So im assuming the little box, which was unidentified before, is the "PIT" box, but again i have no clue. Anyone know where i can find parts for this engine? i looked around but couldnt find anything.

Either way, im a little bit off the 15k+ volts needed for a spark.
 
anderkart

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I could be wrong, but I got a feeling you should also try taking your multimeter test readings in both the DC voltage and the ohm/continuity test settings. (I dont think were dealing with A/C voltages here and this is probably giving you false readings)

You know if all else fails, you might be able to pull the (non points style) mag from another small engine and mount/adapt it to yer Robin...
 
Kaptain Krunch

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anderkart said:
I could be wrong, but I got a feeling you should also try taking your multimeter test readings in both the DC voltage and the ohm/continuity test settings. (I dont think were dealing with A/C voltages here and this is probably giving you false readings)

You know if all else fails, you might be able to pull the (non points style) mag from another small engine and mount/adapt it to yer Robin...
Click to expand...

I tested in both AC and DC, but all the dc results were approx. 10v peak. I have never tested a coil with my multimeter, so i have no idea how to do it properly, i also was thinking, that i really cant ever read it properly since my meter only goes to 500v and coils should put out atleast 15,000. Yea i may just try to adapt a different magneto, but im not sure which engine to take it from, since this one is mounted inside the flywheel which can be an issue, since all the others i have are external mounted.

sideways said:
could it be an elctronic rev limiter?
Click to expand...

It could be, i want it to be, that would make everything really easy. BUT it has a mechanical governor, so i don't see why it would have electronic also. I think I'm gonna give Subaru robin a call today and see if i cant find someone to help me out.


I'm going to put this on hold for a little while, go back to my mower i guess. Wednesday my dad is picking up a free bike for me, its a suzuki ts185, the guy said its a parts bike but who knows what that means. So, if the engine isnt seized ill try and get that going for the go kart.
 
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Kaptain Krunch

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vandancouver

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good luck man. the forum lookedpretty cool when i was checking around. hopefully you can find what you need
 
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