Edge Performance Rotax upgraded oil pump installation / review! 

Really enjoyed your walk-through on this pump upgrade and testing of new pressures, etc. Thanks for bringing us along!

thanks Steven! always learning more about the rotax! Glad to have Edge out there building new cool stuff for these engines!

that's awesome!

They really are. They need some help when you ask for 50% more powrer than stock LOL but that is kind of understandable. The big bore 912's are really hard to beat for a great mix of power/simplicity/reliability etc.

ha! first person to comment on that!... so that switch changes between the two maps available on the ECU. Off would be map1: low boost/cruise/extended climb map, and turning it on is map2: higher boost/quicker boost response etc. War Emergency Power seemed like a fitting label!

@@GravityKnightFlying Sweet!!

🤣

Are you going to show Todd where to go on your home turf? Love your series on your highlander build. Can't wait to see you fly.

@@scotth985 Thanks a ton, I wish Todd had pinged me, I'd have flow my 182 out. I do plan on taking my Highlander out to his neck of the woods when it's done. I'm going to show up on his door step....

Thanks brother! I definitely agree with your assessment. You can always shim the relief a little if you decide you want more pressure, but most likely it will be good as is. (also, the relief shims are rotax parts from CPS etc., not some hokey aftermarket thing). In other news, I'm hearing some rumors about some various upgrades from Edge that work with the 912iS.... :) ... so just something to keep in the back of your mind if you need a little more power down the road!

@@GravityKnightFlying After watching your video taking off at 13,500', yeah I think I'm going to need more power. 100HP Normally aspirated is sounding a little ... anemic. First I guess I need to learn how to fly the thing a little bit. Not sure that my thousands of hours of Bonanza time have really done much for my backcountry skills. I'll keep a lookout for 912IS products from Edge. Can't wait for the Utah video. Flying in the Canyon County is what's motivated me to build the S7.

thank you very much Brian, will do!

it is... test bed for the air force academy that never ended up happening...

@@GravityKnightFlying Now the cost makes sense - always wondered about that!

@@prof.heinous191 yea somehow they worked it out to get the turf out here... I believe the plan was to see how it held up and then they would install it at the academy.. but for some reason it never happened there... it has held up well actually, it shows its age now, but it has been there for quite some time (15-20 years?)

@@GravityKnightFlying Interesting - I guess that's lead to a ton less maintenance for you guys over the years, that's a good life span! Also wondered if it traps frost/ice worse than grass?

@@prof.heinous191 not too bad... but it does seem to trap rocks and gravel a little worse than regular grass probably would, it can't really filter down through it and just sits in it

Thanks Wiz!

thanks Jim!

Makes sense William. I agree in general, this is a concern with an engine... interestingly enough, the rotax seems more "tolerant" to higher pressure. But ultimately, I do feel it's important to stay under the limits set by rotax. They give pretty wide ranges, and unfortunately are very vague on why the 100psi limit and what would happen if exceeded. I saw 88psi for a short period of time when starting cold with this setup (2 shims under the relief valve). I will be keeping an eye on that when it gets colder... even though I pre-heat in the winter... I need to know if I had to start it in real cold temps I'm not going to exceed the limits. -T

Thanks Jeffrey, welcome! Good question about the bear trap, I just started running that about 30-40 hours ago. So far, I've never seen any metal inside the filter that it has trapped. Possibly (hopefully) that is because there is no metal there to trap! But I figured it couldn't hurt to have another spot to grab metal and then get rid of it with the filter (I have cut every filter since adding it).

@@GravityKnightFlying - Thanks for the info and the quick response! And I agree, it definitely can’t hurt to have multiple places to remove metal. I think I will give one a try. Between that, oil changes every 25 hours (in my case anyway) and an oil analysis a few times per year, I feel like I should have my bases pretty well covered! (What size are you using? The one for “Sport Bikes”?) Thanks again.

@@JeffreyRubicon oh it's the BT500. Smaller-ish one I think. Good call on the oil analysis and 25 hr changes. I do 25hrs as well regardless of fuel used. 50 just feels like too much although many people do it just fine. 30-35 on non avgas wouldn't bother me, but I just do 25 too. Waiting on an oil analysis to come back right now as well.

@@GravityKnightFlying - Got it. Thank you!

thanks!

More volume will allow for more pressure when you are short on volume due to feeding oil squirters. The main problem is that at high altitudes, rotax engines oil pressure falls off to a level that is questionably high enough. Doesn't matter how high you set the bypass, the pressure won't go up because there is a lack of volume. So in this case, more volume does allow for higher pressure. Also allows for higher pressure at lower rpms. What seals are you referring to in the rotax engine?

@@GravityKnightFlying yes I agree if you have to low volume it will affect your pressure. internal engine oil pressure is dictated by internal bearing clearances and by pump velocity if pressures are to high any engine seals can fail I have done this on high performance engines before

@@williamstrome5271 When you add oil squirters, you need to also add volume to keep up.. that's mainly what this pump is here for. (And to also combat the reduction in oil pressure at high altitudes). The reason I asked you to point out the seals you are talking about is that there really aren't any 'seals' on the rotax. There are some o-rings, but they are good for much higher pressures than we are talking about here (say going from 60psi to 75psi). The oil filter is the highest potential problem area from what I have seen. Rotax also has a rating of 100psi maximum oil pressure during cold start, and even with this pump, we are well below that... so I'm curious where your claims of blowing out seals come from?

imagine his high performance engins he is referring to are car engines. would ne my guess@@GravityKnightFlying