2 Stroke Oil Pump Fail Sensor

[2_DONE_THE_TON]

Hey guys!

I finally got my Yamaha RD to ride after my rebuild and i just want to ask the 2 Strokes geeks out there why Yamaha didnt invent some kind of a sensor that will warn the driver if the oil pump fails or stops delivering oil.
Theres only a sensor that tells you how much oil is in the tank.

I have no problems by now whatsoever with the genius oil pump,but i just wanted to ask this question.
wouldnt it be a great gadget for a 2 stroke, an idiot light for the oil pump?

Cheers!

 

[jpmobius]

What do you mean no indicator??? When the engine seizes, it indicates your oil pump has stopped pumping oil!

Actually they are pretty bomb-proof, so if you need a fail light for that, you would want a whole array of indicators for all sorts of things. A low transmission oil light would be more useful if you ask me. The pumps can leak, which is annoying, but doesn't keep it from working. And you know right away if it is. The check balls can get stuck from lack of use, but once everything is working properly, there is not much likely to fail. You have a better chance of an injector line coming off - don't know how you would make an indicator for that! None of the 250's or 350's here in the US even had an oil level light - you had to actually pay attention to your machine! Not such a bad thing actually - I have a car for my girlfriend - needs basically no paying attention at all! (the car I mean!)

 

[2_DONE_THE_TON]

90 per cent of all people told me the same thing...fool and bullett proof but if the pump fails and the engine seizes this could mean serious injury.
Maybe a 2 sensors that measure if oil is flowing trough the lines would be interesting.
These machines are so undiluted and mechanical of course this would ruin to whole point.maybe i just need time to trust the pump.
I find myself pulling of the side cover once in a while gazing at the pump and watching it .but i guess watching the smoke out of the exhaust will do the better job.

 

[Sonreir]

The oil pressure coming from the pump is pretty minimal, no? It might be difficult to measure.

When I had my T500 it was a pretty simple thing to just look at the oil lines and see if there was oil in them.

 

[2_DONE_THE_TON]

Yeah my lines are full of oil.i use see trough lines.
Even when at full stroke the oil more oozes out than sprinkles .i was just wondering if there are sensors that could measure that small amount of flow.

 

[runmikeyrun]

I can think of a way, although its pretty complicated for the application and requires a good knowledge of electrical theory and electronics.

You would have to use clear oil lines and dark injector oil. You would have to mount an LED/LDR (light dependent resistor) combination to each transparent pipe. How this works: The LED light is directed through the tubing from one side to the LDR on the other side of the tubing. The LDR's electrical resistance changes depending on how much light hits it. Since it will pick up any changes in light, the entire LED/LDR ensemble would have to be enclosed in something light proof. When calibrated properly, the LDR will pick up light shining from the LED only when no oil is present in the tubing; when there is oil it will not allow the light to reach the LDR. It's basically an optical switch. You would have some circuitry to solder together which would power the LEDs and also the indicator LEDs that would turn on in a fault, to process voltage coming from the LDRs and a voltage regulator to step down the bike's 12v to whatever the chip would run on, along with some resistors etc.

For any guitar nerds out there, this is the principal on how a Morley wah pedal works. When you move the wah treadle a piece of black plastic with a slot in it moves between an LED and LDR. The slot gets wider from one end to the other, allowing more or less light in when the treadle is moved.

This is most likely why the bikes didn't come with a fault indicator- it's bulky having stuff hanging on the oil lines and prone to problems. Plus, as the lines yellow or if someone uses a translucent oil like Klotz it would need recalibrated. But man, it would be TRICK...

 

[stroker crazy]

why Yamaha didnt invent some kind of a sensor.

Yamaha didn't invent a sensor because it would be more prone to failure than the pump itself!

Never known an oil pump to fail, so it would be a solution for a non-problem.

Crazy

 

[crazypj]

You don't even TRY to measure oil pressure on a two stroke :
You measure delivery volume.
The only Yamaha pump I ever saw fail to deliver oil had been sitting for several years with an oil/water mix in it but even that one cleaned up OK without any pitting and bike ran for years afterwards with it
Oh, they are called idiot lights for a reason