Yamma-Fox

Love it on my 140hp yamaha.  Only a few hours on it but its all been under rigorous testing with the new motor setup.

 Engages smooth, runs cool and doesnt slip even under that power and a 79" 3 blade prop.  I can do a 10 min ground run through several engagements and up to full throttle then shut it down and hold my finger on the clutch drum.

I do like the material and constrution better on my TMR400 version better.  Same clutch but different manufacturer.  Contact Tony at Twisted Metal Racing in canada for that one if you choose.

Jim I snuck in your hangar, folded the wings on the plane in front and used a cloning machine to increase your fleet there...

Now it looks like the storage deck on an aircraft carrier 

Wait a second..  wouldn't that leave our founding father (of AFF) without an Avid/Fox?!

X2 on everthing that ^^ guy said.  Plane looks bad on it's back but hopefully it isn't hurt too bad and hopefully it won't even meet the definition of "substantial damage".

And Flightguy, was this mostly that you touched down a smidge early in the unplowed portion, or am I misreading the way you described it?

And I'm putting the one filter after the fuel pump(s) as opposed to before it.  Let the finger strainers and header-gascolator take care of the pump filtering.

Just seems better to push pressure through a filter rather than suck through it.  Especially if it were to partially clog.

I'm also tapping the fuel pressure guage after the filter to be able to see (from the drivers seat) if it ever is getting clogged.

Thanks for posting so we can all learn from each other.  And dang..  sorry it happened and had to go as far as the faa & ntsb.

The forum always get quieter in the off season.

I say pass on that one.

Were you planning the rx1 in this?

If so here is a member that was doing that on his MK4.  Might give some insight on that undertaking:

Here's a pic of my temporary  (UGLY!) test setup.  The green circle is my glasspack and the blue is the gsxr muffler.  I think the quiet I accomplished is in that the first muffler knocks down the sound and the second takes the rest out... down to what I'd call "Toyota quiet".   Really all that is left now is prop-engine-gearbox noise and that in itself ain't "quiet" but at least I got rid of the exhaust noise!

Next is to clean it up in a permanent routing.

QUIETING THE BEAST:

Probably the biggest downside IMO with going Yamaha is that they are known to be loud.  Probably has to do with the 8500 rpm thing but typically they are known as "screamers".  I really wanted to fix that.

The exhaust I "temped up" is quieted by use of 2 mufflers inline - a steel 17" glasspack and my 2011-14 Suzuki gsxr 1000 muffler.  Also helping quiet it down is the extra length of exhaust pipe, and having the outlet of the rear muffler well behind the seats /doors.

The upside:  it is far quieter even than the snowmobile (which is quiet).  So quiet that in full power runup I couldn't even detect ANY exhaust outlet noise over the prop /gearbox / engine noise up front.  Not even when standing outside and behind the plane.  The difference is now like a stock Goldwing compared to before where it had a bit of that "sport bike with an aftermarket can" thing going on.

Downside is added weight along with the aerodynamic and "asthetic" loss of an exterior routed system.  That's acceptable for me in my quest for quiet and I couldn't get the gsxr muff under the cowl anyway.

Here's a video and it seems loud here but that probably is because there is nothing to compare the sound with.  I will post another someday taking off and doing a fly by with another plane to compare better with.

Get that thing flying soon bud! 

That'll be a milestone - being the first "Half Apex" out there pulling an Avid / Fox! 

Funny Turbo but they still do that cooler thingy on the newest jet engines.

Here's from my walkaround today on a 2018 model CFM56.

If that brick is good enough for 800+ mph flow inside a jet engine then I'm feeling better about my Kitfox belly radiator LOL

I'll let ya know soon.  The kit is complete down to every rivet and rib, so with some hysol and ballons the structure assembly looks easy. 

The kit they sell is "quick change" extensions whic can be removed or installed in a few minutes.

I plan oratex covering in white and then will paint it and a few other items (new unpainted cowl and ventral fin) at a later date.

Yeah I learned the value of reciting "go around... go around EARLY" at short final on each landing after day 1 flying my KF2 where I found myself in the grass off the runway with some big sliding skid marks!

I coulda avoided that embarrassment had I powered up upon the first sign of squirrellyness.

Nevr looped anything since then but would have a few times if I wasn't trigger ready to add power and try it again.

Looks like a great  plane you got there!  I say keep it and do some upgrades that you want.  Anything you add should add equal or greater to it's value and "sellability".

Look into the kitfox wing extension kit.  I bought one and am installing it on my short wing KF5.  The consensus is that the long wing doesn't slow it down much (if any) but helps the slow side very noticeably.

Anyone have objections to a filter like the one in my last post?  Seems like a good compromise with plastic instead of glass case and also not bieng paper mesh.  It looks like it would take a ton of "crap" to block it up..  especially with a 4psi fuel pump pushing through it.

Ive asked this question here in the group before and through their advice have found myself in the camp of less filters.  Especially ones in the gravity feed side where it takes just the littlest blockage to stop the "trickle down".

I believe the finger strainers and the  header tank (as a) gascolator will do fine in that secton and am planning a simple plastic cased plastic mesh filter after the fuel pump and before the fuel pressure guage and carbs:

https://www.amazon.com/gp/aw/d/B00K24I1Y6/ref=ox_sc_act_image_1?smid=AQFP6DEPUVK7X&psc=1

FWIW if I were a new pilot looking for his first plane, I'd go buy something like this:

https://www.barnstormers.com/ad_detail.php?id=1507175

Easy to find an instructor and insurance,  Nice docile tailwheel plane,  some STOL capabilities.  Keep it for 5 years and probably sell it for eveything you got in it.

Then buy that Avid /Fox and build it to exactly fit your needs.

Edge working with ya on the Phazer??   Secret "skunk works" project?

yeah we have a guy that built a jig for the avid:

Had to hit like Fred, sorry.

I feel much more Wellness now too!

Yep I bought a new one for a spare too.  Not willing to sell it at this point but if I were looking for one now I'd buy a used one and send it to Tony (link below) and have him put a new 3.47 gearset in, spec it out and do new bearings and seals.  He is an an authorized rotax service center.

Brad this is where you get that TMR 400 clutch too (if you choose this route)

http://tm-racing.ca/

Another post reminded me how I'm always looking for a good next book.  True life aviation stories. 

I'll start with a couple of my favorites but please toss in your favorites here too (with a little description of the book)

Well put ^^^.   No room for any big "glam" aviation rockstars in my playlist either!(Unless they are mine I mean...  )

Guess I've avoided clicking on that kind out there or I'd be on the bandwagon all wound up too.  

But hey I'll always be glad for the ones like Leni's and that Yellow Highlander doin cool crap like slope gliding off a steep hill...  or maybe a SuperStol "greasing it on" at 700fpm 

Those ones are cool.

Yeah I think I've watched maybe 4 TP videos and for sure exactly only 2 Draco videos (1 being the crash).  Every Steve Henry vid but he never has claimed to be a bush pilot so I'll consider him exempt from the debate.  

As a matter of fact I don't remember any of these guys that we are refering to here ever claiming themselves as bush pilots?  Maybe a mislabel by some followers but I'm pretty sure they themselves know the difference and would not argue themselves as being such.

I too love the true bush pilot books (especially the pioneers) and could share some good ones

But honestly this is a little funny to me becuse so you know who the first YouTube hero of mine was??

Some dude on Lotus floats bouncing around on sea ice and in a 6" deep puddle!

Those videos ALONE drove me to seek out and buy my KF2 and mount up 1260's and get into this crazy hobby.

So FWIW some of those YouTube heros aren't all so bad...  even some of the ones that have never loaded a moose on a wing