Edge Performance fuel injection install | Rotax 914 turbocharged RANS S-7S
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- Episode 2 of the Edge Performance mods content. I try to cover the install in decent detail, outlining most of the key parts of the install, the fun parts, the frustrating and/or challenging parts, a few tips I have to make it go easier etc. This is a long video, but hopefully you find in interesting and/or helpful! Thanks for watching, please subscribe! Thanks to Thomas and Jason of Edge Performance! I only had a few questions for them but they always responded very quickly with a solution or suggestion!
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Your videos are 10 times better than anything on TV, anything streaming, or as far as I'm concerned, TH-cam. You are an excellent mechanic, welder, machinist, and pilot and for what I can tell, person. So glad you are making these videos to show guys like me the way things should be done, and I've been fixing and building planes since '71. You and your flying buddy also have an incredible amount of confidence in your mechanical work to fly in these incredibly beautiful but deadly places if u had an engine failure. I don't think that failure is in your data base. This Edge stuff looks like it's top quality.
Very kind words! Much appreciated! Always learning and glad to share! Thank you -Todd
Got to be one of the most underrated channels on youtube Incredible !!!
Good Job, After have done this same install six months ago i,m glad i,m not the only one that had troulble with the inside bolts on the intake. I was about ready to cut those bolts out of there and put a stud into the head and insall a nut on top. Finally got them by removing water lines. After talking to Jason he told me to use a ball headed allen worked way better. i watched the whole video. Any body on the fence about doing this just go for it, not that big a deal.
Ha! thanks for the comment! those bolts were definitely a pain!! I bought some metric 12 point bolts if I ever have to go back in there.. I think they will be easier to install due to a wrench having more spots it can grab to make smaller turns....
Im going to do the same mods to my 912ULS.
SOMEBODY is making good use of his time during this stay at home thing! Looking good.
This is a wonderful video, and you did an awesome job answering my questions before I barely even thought of them as the process flowed together. Thanks for video documenting, narrating and sharing the Edge conversion on your S7 airframe and and Rotax 914 FWF. Great job, brother!
Stan Bearup thanks Stan, appreciate that comment! Thanks for watching!
Awesome video man. I appreciate that you didn't slam the manufacturer's when it didn't come perfect. Super cool that you just callem and figure a solution out.
Thanks buddy! yea, no problem cutting them some slack, They were waiting on parts due to slow downs with the current state of things and part availability issues and I know he was trying to get it out the door asap so I could get started- which I appreciated. Ended up being no big deal to work around thankfully. Several of the guys from Edge have followed up on my install with any help needed almost around the clock. I'm having an issue with the servo that controls the wastegate not holding boost steady right now and they have been working to try and figure out what the issue is. We thought it might be a bad servero, but I pulled it, took it all apart and it looks ok. Did some tests with it out in the open and it appears to be functioning properly. Going to try a fresh map and some different adjustments and see what we get once the sub freezing temps and 30mph wind passes. They have been very helpful in trying to diagnose the issue. Things are bound to happen, really awesome when the company is there to help out you know...
Thanks for taking the time to show us all this process. Awesome!
Looking good! I run a Edge system and it has been solid. I love being able to fuel trim each cylinder and get my EGTS withing 15f.
I've been working on that actually.. very cool! getting them dialed in nicely! good bye and good riddance carbs lol!
Dustin, which engine ? cruise fuel burn.....doing better now ? Before and after GPH ? Thanks
96TTViper sorry read that wrong. Interested to hear what Dustin has seen too! Still waiting on shocks, so I don't have flying data yet. Lot of ground running to work in the tune and figure out a weird boost control issue etc. But I have the fuel map, injector trims etc. all worked in pretty decent now.
Great video! It seems like what you are doing is similar to what I'm working on installing the 912is on the RANS S7. A lot of things are the same as the 912ULS, but there are enough differences that I'm constantly making a bracket, figuring out some kind of wiring problem or finding a way to make it all fit.
It's a fun project, but I'd like to get it done and go fly the thing. It's definitely adding significant time not going with the basic engine. I think in the end I'm going to be happy with having fuel injection, but about now I'd like to be done with the engine install and move onto the cowling.
Can't wait to see your plane fly and get a PIREP on the Leading Edge system. It looks like it's going to be a winner.
Great video and description of the work involved in making the transition. I trust it will be more than worth all the effort you have dedicated to the task.
Looks great, can’t wait to see it running!
thanks!
Todd, nice job of documenting all your work, frustration points and triumphs. As a person who has considered this option for some time, your efforts have me somewhat apprehensive about doing this project! You certainly will have an impressive machine to fly :)
Todd, great video, good stuff, funny stuff, things we've all done. Great job!
Thank you!!
Totally fascinating thankyou Todd. Looking forward to the next video.
Thanks David!
Great video. I enjoy the technical stuff as much as the flying. Thanks. Yesterday I was also watching a video about two South Africans who have a Kitfox and sent their 914 to Edge Performance in Norway for the whole treatment. Got to hand it to you for doing all the work yourself.
Saw that one also, they sent it half way round the world, but now reckon that will be only half their problems solved!
@@prof.heinous191 They need better brakes now. I mentioned the Beringer dual caliper system to them.
Thank you Tom! I saw something about that too. I'd love to have the full edge engine/welded crank combo!! that would be a fun setup.... it was a pretty good project! Didn't help that I ended up doing all the other stuff at the same time....
Great work, and now confirmed absolutely no place for amateurs!!
Thanks J!
Nice that you did this. Great help as I am considering doing the same thing on the same plane!
It does not have to be pretty, it does however have to be workable. Just found your channel and like it very much.
Don’t know if you tried,but the ball head Allen wrenches are amazing for getting into tight places.
I did, couldn't quite get it to work... I think if I hit it with the torch and put just a real subtle s bend in it, it would work pretty good.. I may do that to just have one around thats ready... though I also bought some 12pt metric bolts to go in there that should be a little easier since you can spin them less at a time and get back on the head for another 'bite'
@GKN to flare a metal tube for a flex connection, would a “Crox” tool be any use.
Excellent content BTW.
don't you just love doing your own little modifications like the shrink tape and the brackets for vibration and rerouting wires and hoses for past experiencesit makes the job so much fun and it helps you regain trust quicker in your plane and motor when you put your own spin on things when you trust yourself completely on your mechanical abilities I love the way you do things brother I'm the same way
@@madmarkstoys absolutely!!!! Agreed!!
I think you did an awesome job of demonstrating both that the kit is well made and that it takes a lot of technical skill to successfully make such a complex change to an engine. In retrospect, would you have been better pulling the engine (i.e., would the time required to pull the engine been less than required to make special tools and resize holes)? Great video!
Question?? Is that char a common occurrence with rotax engines? After completing the vid your comments were brutally honest but (at least to me) funny as hell... thank you. :-)
Awesome job I can’t wait to see how much more power you get out of it and what brand is that starter
thanks! That is a skytec starter (Hartzell)
Thanks for another video Todd. Still waiting on the Edge EFI for my 914 Superstol but I expect it to ship any time. Were you able to work thru the boost issues ? If doing again would you let the Rotax stuff control the boost ? I think you are in the same boat I am, with the stock engines we won’t be trying for much more power anyway (for now) Also, did you use the 12 Point bolts on the inside intake now or are those for the next time ? Thanks !
Hey just saw this! Make sure you adjust the temperature compensation map (boost modifier map). It was set way too low (120ish deg it was pulling back boost). I notified Thomas of what I found and fixed, so he may have that change already in a tune to send you, but I'm guessing the map it shipped with will be like mine. This was the main issue. Still having a little wandering at WOT, but way better now... also, it does do some strange stuff at cruise type throttle settings where the boost and rpm are wandering around (above 5200 is the worse, throttle pulled back).. can't find anything in the tune causing it.... really strange. I have another couple used servos on the way so I can eliminate that.. but it worked fine on the 914 TCU, and I don't see it moving when it shouldn't etc. It's flyable so when I get shocks I'll see how it behaves in the air - maybe it will be better lol.
Great job.
appreciate it!
very cool but it all seems too complicated for me....I always end up back at a simple air cooled lycoming or continental
That's understandable. A good ol lycoming is damn hard to beat for simplicity/reliability. The issues I have is there are no lycomings/continentals that come close in power/weight ratio for a plane this size. Especially at high altitudes. They are heavy and screw up CG badly, and eat up precious useful load. They also don't have the fuel efficiency. Plus they don't make enough power to take off in a lot of places I land. Always pros and cons to all options sadly. The simple ones are heavy and lacking power.. the powerful, efficient options are complicated.... I'm not married to Rotax, just haven't found anything that works instead on this application.
That sure looks like an enormously complicated system. I hope it works out to be worth the effort and cost.
Me too Jim! I think it will once all ironed out. The 200deg F egt spread on the carbs is really a crap deal, you can't turn up the power when you have cylinders all over the place like that.. and the economy sucked pretty bad. Also it would vapor lock and not hot start... This fixes all those issues.
They need a tab on the throttle body to mount the pressure regulator.
What performance increase figures can be had with this mod or is it less fuel burn which is the predominant factor?
Is this engine still alive a year on ?!!
Both, you can bring the power up to whatever the turbo could support (the stock 914 can't handle more than about 130hp in stock form though). It does make it more efficient by a noticeable amount. Tight EGT spread, and high pressure injectors really wake up the efficiency. This was an old, non heavy case 914, the case had cracked right before I installed this and I didn't realize it. I ran it for a while before I figured out where the oil seep was coming from. I ended up putting a full built Edge 912STi engine in it's place (using this same injection system). That engine can produce up to 154hp (I run it around 140ish) and it has 450hrs ish (I'd have to look at log book).
Does EFI system decrease or increase the installed weight of the engine any?
Be more careful doing a cylinder leak down test. I held the prop at TDC and checked the pressures, which were perfect( turned off the air walked away and came back and he cylinder suddenly blew the piston down hitting me with the prop edge. It cut my head open five inches ,and forced me to the ground, the force was so hard I had to go with it. I was streaming blood and it was lucky it was a wooden prop. I Thought it had lost pressure but it got me wrong there. A complete surprise , so get a hand next time😮.
Seems like anything i do its always hurry up and wait. Im on a quest to make a plane with the fewest certified parts possible.
I know that feeling... I'd like to stock enough extra parts to build another plane/engine LOL.. but my bank account says we'll stop at stocking some extra oil filters and bolts LOL
@@GravityKnightFlying you are going to like this. I put fuel injection in my plane (lycoming 360) got way more power, ran cooler and cut the fuel burn from 11gal/hr to 8. Thank goodness for experimental so i could actually do it.
ACI Agricultural Construction INC that is badass!!!!
How much horsepower will it produce. Stock vs upgraded?
Adonde sevenden estos aviones y como se venden y acuanto
Thank you for this video. Want to sell that plane?
not quite yet ;)
You may want to look at changing your fuel pump being in the vertical position as it is. I'm pretty sure it's best to mount horizontally! Go to SDSEFI.com as they are the manufacturers of this system. Edge only re-brands. I have the same system on a Lycoming and love it!
Tony Braun its not a rebrand anymore... doesnt use sds ecu anymore, the old edge system was based around sds, this has an autronic ecu... seems to work fine like this - got several hours of ground tuning in, instant prime and stable pressure, only way to go horizontal would be to mount inside cockpit which I have mixed feelings about.
GravityKnightFlying My Bad! The dual fuel pump setup is, without having it in my hand, exactly the same. Anyways, I just know Ross recommended it be mounted horizontal and as low as possible as he had customers who didn’t listen and were burning pumps up at 150hrs. Just a friendly heads up.
Tony Braun interesting point. With wing tanks it seemed to lift fuel up to the pumps no problem, ill keep that in mind though 👍
Should have staggered solder joints.
why?
@@GravityKnightFlying If you stagger the joints, it has the effect of not having a big lump in one spot of the cabling?
@@portnuefflyer hmm..true.. but it wasn't an issue on this as the plugs are much larger anyway as far as fitting it though a grommet etc.... if i staggered them though, id have a lot longer section of the cable id be trying not to let bend with extra shrink tube reinforcing it... I can see arguments for or against all of the above.. such a non issue though in reality
Your right its junk.