Brett from Webb City here - If your shop wasn't messy it means your not working hard enough. :) Nice vid. Gearbox looks beefy enough. Motor mount turned out nice as well. I'm getting ready to order my avionics and finishing the wings before covering. All the best Bryan. :)
Brian, Thank you for this detailed video! Steve Henry just finished building mr a turn key Apex Firewall Forward system. Watching this vid will help me understand Teal’s gearbox for future maintenance. Teal should include a link to this vid as part of his accessories package. Again thank you for taking the time to document your progress. Bruce Johnson Highlander N121FG
Hi, An old trick I learned years ago, glue the Gasket on the Gearbox or any part that will go on a engine, only on one side that will be removed with Gasgacinch and the other side of the gasket that will be sealed to the engine with silicone gasket sealer, Reason being, the gasket will stay on the part glued with Gasgacinch, The Gasket will come off completely and most of the time will be undamaged, and will be reusable many times, if glued back on with silicone glue. To Reiterate , the gasket glued on with Gasgacinch is Permanently glued on and does not need to be removed and can be reused if not damaged. I use this trick with my cars when replacing water pumps etc. the gasket stays with the old worn out parts and the engine is gasket free because of the silicone sealer that was used.
These videos are excellent. I will be doing a similar build with the Apex. I see low mileage Apex motors quite often. I haven’t settled on kitfox or highlander, but the plane will be one or the other. Thank you for documenting your build!
The gearbox looks very well made to handle the horsepower. Just a thought that I have used on o rings to keep them in place was grease. Cleans up easy if some oozes out the casing. Looking good Brian. Hey don’t worry about the mess, that happens when your building.
Thanks for making this video. Using a Yamaha engine for aircraft is new to me. One question. Why did you put rags in the exhaust ports, but not the intake ports?? Murphy's Law says that stray nuts, bolts & other hardware has an affinity for falling into the intake system. Very dangerous to leave those ports open.
thanks for the How to mount gear box. You do very good how to videos. I greatly appreciate your putting the time in producing these videos. I Hope to build a Highlander in a few years if all goes well with retirement?
I have not had a chance to look.. But i would love to know where you source everything needed. If i build a kitfox, i am probably going to afford this way much better, and so that i dont have to research everything that is already done, a detail what is needed would be GREAT
Surprised the box is not installed with drilled head bolts and safety wired. Is there room to install a 90 degree 1/8 NPT street elbo(for temp sensor) to avoid gearbox removing in the future?
Great Video, with this setup, Apex, Skytrax Gearbox and engine mount from Ken Brown does it fix under the standard Rotax cowl as provided by Kitfox? My Kitfox delivery is still over a year away but I want to get the engine together now.
Awesome! It’s really cool seeing this project come together. I can’t wait to see how the APEX preforms! What’s the total weight of APEX and gearbox? Also what’s the horsepower going to look like?
I would have like to see the install of the mount, & mounting the engine... if you have that footage...👍 Really enjoying this build thx for the extra effort in recording it...!!!
I learned a trick in A&P school to keep the motor from turning while you torque on the crankshaft. You remove one sparkplug and insert a length of cotton rope inside the cylinder. When you torque against it the Piston is protected by the soft rope. Clear as mud?
Brian, I've started on my kit ss7 a few months ago, I've got my 2006 apex engine. Can you tell me if Dave Brown sells any engine mounts like the one he made for you ?
Hey Brian, was there any requirement to grease the inside of the shaft seal when you pressed it on to the shaft? Without lubrication wouldn't the shaft wear on the seal? Stinson guy.
Thanks for the video ,it will help the rest of us.Keep them coming. Have you done any weight and balance calculations in regard to your battery being mounted up front rather then somewhere else .
Hi. In your 23:03 time you talk about your engine mount made by Ken Brown. I just want to duplicate your job. You said " Chromoid" is the material? What size? Where did you get the part shown in 8:35 time ? (Is that the full SkyTrax gear box?)
@@BowenAero Thanks for the info, I just subscribed to your channel. Im very interested in your build because I've decided to do the same build, I'm placing my order for a kitfox sti next month and already located several apex donor sleds. Please keep the videos coming and looking forward to gaining alot of knowledge from you. Also what's your thoughts on the turbo model apex, Thanks Cliff.
Regarding your wheel/brake setup, you mentioned in another vid that you were working with someone on a Model IV. Has that project been completed yet? I may be interested sometime in the not-too-distant future.
I’d look for a piston stop that will physically block the piston v. Wedging a brass rod in there. Go to a Yamaha dealer and talk to the mechanic and they can help you out
The brass piece between the gears was a bad idea. It creates a tremendous force pushing the gears apart. The proper way is to hold the ring gear (where the starter engages).
The stock engine with a re-tune of the fuel map, Dyno results showed about 161 hp. The gear box is from Teal Jenkins Skytrax and the cost is $3500. I don't have a Rotax gear box to compare it too, but the Skytrax gear box is built very well and is being flown on a 300 hp version of the APEX and has over a 100 hours now.
Yah brother I really following you always and please give me a idea about the gearbox how I collect please tell me this about the gearbox how I fand this gearbox
A friend designed it with CAD software and then cut all the tubes with a computer aided mill. It was then load tested to 6 G's. He is trying to decide if it is something he wants to make for others.
Stock it has 50hp more for the same weight and has the potential to add additional hp without exceeding the design of the engine. All for a 1/3 the price. Reliability with the examples that are flying seems to be very good. Those are just a few of the reasons. Personally not a fan of Rotax, but that is just me.
Ok cool. Got a 80 HP Rotax engine in my aircraft. Think it's pretty built proof. They seem to go on for ever. Worked on a few C42's used for flight training and they have been very reliable. The engine in my last aircraft was a Jabiur so most things are a step up from those. Rotax are expensive mind you.
