El Lobo 6" Mini Motor Bike

[bob58o]

Speedometer
Tachometer
Cylinder Head Temp Gauge.

 

[bob58o]

Had to adjust the Head Light. It became my turning stops. I tilted it a bit down and now the light clears just fine. Now the triple tree plates hitting the frame limit the turning. Not ideal, but better than the light.

Also had to adjust the sensor for the speedo. It is close now. It says it should be 1/4" from magnet. It wasn't working when maybe 3/8".

So now all my gauges are functional.
Data points showing Time Elapsed, Distance Traveled, MPH, RPM, and CHT.
Guessing AFR and EGT may be a bit much, but who wouldn't want to know all that stuff???

 

[KingCobra]

Looks to me you chose to purchase a spacer block also to lift up the engine.......

 

[ezcome-ezgo]

I'm so happy for you Bob. I cried a little.

 

[bob58o]

Looks to me you chose to purchase a spacer block also to lift up the engine.......

I did about 3 months ago. And also with my old minibike.

Page 2, post 23, This Thread
9-9-17
Pretty sure you copied my idea and then made it seem like I did it after you????

Ok, I concede this one.
"ALUMINIUM" is way more fun to say than "ALUMINUM"!
What the heck is "ALUMIUM"????

Here's the 30-Sumthin dollar block of Alumium.
5"x8"x2" Engine Lift Kit to provide clearance for TC.

Just have to mark the mounting pattern on the block, drill some through holes, and get some long bolts.

Do I just drill 4 holes for the bolts. Or do I drill lots of extra holes to cut down the weight???
Should be around 7.8 lbs as is. I think we could do better and still maintain the strength and surface area to mount the engine and help prevent the block from flexing.

BTW....Anybody know how much a 30 Series TC with Backplate weighs?????

It seemed pretty heavy as I carried to my "workshop." It is like a 3/4 mile trip to a friend's where I have garage access, so I walk it when I can. At least until I get the minibike built.

 

[KingCobra]

Nope, never noticed that before. It's purely coincidence. So I spose it wasn't a bad idea after all. I was going to send it to a water jet place to have about 5 pounds cut out but I decided it was best to leave it along.

 

[Kartorbust]

Cylinder Head temp sensor maybe of more use than a pyrometer to know if it's running at the proper temperature or even an oil temp sensor.

 

[bob58o]

Cylinder Head temp sensor maybe of more use than a pyrometer to know if it's running at the proper temperature or even an oil temp sensor.

I am pretty sure the kart racing folks use the same type of CHT gauge (Ring around the spark plug, but probably with a more sophisticated computer). I shouldn't be running at WOT for nearly as long as those guys, so I may not get the same readings.

I was hoping I could use ~400 F and try to tune for that.

Lean out the mix as long as it makes power and CHT isn't too HOT.
Advance the ignition, checking CHT to make sure it isn't too HOT.
Using a Hotter a Colder Plug and check CHT???

One review stated that Temp Measurement got lower as they drove faster.
Hmmm????
Because Air Cooled Engines Run Cooler with Air, maybe they had multiple gears, or maybe because the sensor was giving partially ambient measurements.

I have it, but I don't really know what to do with it.

 

[Nosandwich]

Think about this Bob,... you blow on hot food to cool it down.
What happens with higher revs than more air moving through the engine.?

 

[bob58o]

Think about this Bob,... you blow on hot food to cool it down.
What happens with higher revs than more air moving through the engine.?

I don't know. Lots of variables. Air gets pumped in and out quicker at higher RPMs. The air moving around the engine to cool it gets faster as RPM increase. Both because the flywheel fins spin faster and because of the cooling breeze of the traveling vehicle. BUT Parts are moving faster so heat from friction is probably higher with higher RPMs. But the biggest factor, I think, is that at 3600 RPM you are burning 1800 intake charges per minute and at 7200 RPM you are burning 3600 intake charges per minute. More burns in the same amount of time should probably mean higher temps (I would think).

If the engine was already 400 F running WOT for 15 minutes and then I stopped and let it idle, I guess I'd expect the temp to go up there. Then as I started moving faster and faster, I'd expect it to go down a bit I suppose.

But 15 minutes at 3600 RPM and 25mph
OR 15 minutes at 7200 RPM and 50mph

Which will be hotter? I don't know.
I'd probably guess the 7200 RPM run would be.
?????????????????????????????????

---------- Post added at 10:13 PM ---------- Previous post was at 10:06 PM ----------

Think about this Bob,... you blow on hot food to cool it down.

But the food and I are not the same system.

The Air cooled engine obviously has its cooling integrated, so that in order to increase the cooling air speed, you have burn more fuel. Soooo.....???

 

[bob58o]

Dab of Blue.
This was a single strip 10 or 12 " long.

 

[Nosandwich]

Ok...but, the combustion temperature remains constant, and the exhaust charge is expelled in an instant, a a cooling fuel charge follows, on a regular basis....

However, the cooling capacity of the air is variable.?

 

[bob58o]

And what do we have for Defense Council Kaffee?
That’s right. It’s a court martial!

JK, it’s my steering damper.

 

[bob58o]

And don't mount the catch can directly over brakes. I haven't emptied it yet without getting oil all over the rotor.

 

[Joe-405]

Holy moly what did I miss ? Like a whole build. Excellent job bob.

And can’t you just put a hose on the catch can ? Most of them have a barb fitting on the drain.

 

[bob58o]

Holy moly what did I miss ? Like a whole build. Excellent job bob.

And can’t you just put a hose on the catch can ? Most of them have a barb fitting on the drain.

My catch can has this wing-nut thing. Kind of like an air compressor drain.

 

[bob58o]

So my other shop, besides my kitchen, is my buddy's garage.
He never goes in there.
Doesn't do any work on his own car.
He has somebody else take care of the lawn.

It IS a mess in there! But it was a mess before I cleaned it so he could put a junk car in there last winter. The car sat for a year.

Here's the message today. LOL
For the record, the wagon was broken and rusted through. I put it by the garbage so he could throw it away. And I did not not break any chair. There has been a 3 legged green plastic lawn chair on the side of his garage for years.

 

[bob58o]

Is it that bad? LOL
My tools are clustered on two tables and 4 areas on the floor.
The oil pans should definitely be cleaned up.

 

[OzFab]

I don't understand the issue

 

[bob58o]

Well I'm about to head over there to see how my steering damper is going to fit (I mean clean the garage). He's got a bunch of stuff I want to get into. I show some after pics. There's no reason a lawn tractor should be sitting unused in the corner of his garage. It needs some race modifications if he's not using it. If it doesn't run, I should be able to fix it. After all of this, if I can't fix a lawn mower...

I've been doing it wrong.
https://www.youtube.com/watch?v=PDhVJfEFxik