RPM Redline and limiter? - Page 3 - Harley Davidson Forums: Harley Davidson Motorcycle Forum

StoneCrab · 10-23-2012, 07:52 AM

Very nice! I like it. Look forward to seeing it's completion OomD.

OomD · 10-23-2012, 01:22 PM

Thanks, guys. This is much more work than I anticipated, but worth every bit!

Dave63 · 10-23-2012, 01:36 PM

Quote:

Originally Posted by Nathang

Umm, no... w/all due respect, that's wrong. Outside air temp has nothing to do with it

There are no dry desert breezes passing thru, Water does not evaporate

from the closed environment of the crankcase. Water gets cooked off or it stays behind.

Exhaust blow-by is live steam and CO2 at 212F+, if you cool your oil to 100F constantly,

you will have built a still inside your engine. The temp you'd have to be higher than

to even stop condensing the steam and increasing the water content is 212F.

.

Agreed however, the colder the ambient air, the longer it'll take an engine to stop producing condensation from warm up, and until the engine has cooked the H2O out of the oil.

XL1200R · 10-23-2012, 01:50 PM

Quote:

Originally Posted by OomD

Thanks, guys. This is much more work than I anticipated, but worth every bit!

I can imagine!!!

I was really looking forward to seeing this!!
Ya made my day!!

OomD · 11-08-2012, 03:17 PM

Some more progress. The board is inside the enclosure, and the firmware is basically complete. Installation on the bike is complete too, and a few test runs have been made. Successfully!

Now it's fine tuning and tweaking the software, filters (for electrical noise) and generally optimising the whole thing. Will post a vid soon!

The white decal (faceplate) is still a bit rough around the edges as it's a home printed one at this stage. I want to play around with different designs before committing to a professionally made one. Choices are basically black on white (photo) or white on black.

Tom31w · 11-08-2012, 03:30 PM

So, let me see if I've got this straight... you've designed a tachometer that will show green lights, but red when revved above ~3,000 RPM when the oil temp is under Y (Y= operating engine or oil temperature), but once the temp exceeds Y, the tach will show green until the revs exceed ~6,000. That is bada$$, hell I'd buy one.

OomD · 11-08-2012, 03:42 PM

Quote:

Originally Posted by Tom31w

So, let me see if I've got this straight... you've designed a tachometer that will show green lights, but red when revved above ~3,000 RPM when the oil temp is under Y (Y= operating engine or oil temperature), but once the temp exceeds Y, the tach will show green until the revs exceed ~6,000. That is bada$$, hell I'd buy one.

Indeed, that is what it does. In addition to that it has a dynamically adjusting shift indicator... You can set it to prompt you to shift when the RPM reaches a given percentage of Redline (i.e. warn me to shift when I am 90% close to redline) or when it reaches a set RPM value (e.g. 4500).

XL1200R · 11-08-2012, 04:33 PM

This thing is so bad ass!!!

When it is done and on the bike please for the love of god make an in ride video so we can see it in action!!!!

This may be my favorite thread ever!!

Dutch1 · 11-08-2012, 06:06 PM

So you going to sell a couple. I could be interested.

Harley Rider · 11-08-2012, 10:34 PM

I've never seen anyone design and build their own electronic gauge from scratch before, much less one that looks and works this cool! If it all works out (and it sure looks like it's going too) are you going to consider selling them? I would think after the first one, building more would be a lot easier.