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Good info and it is exactly what my engineering buddy told me also.  I am not sure why the guys that built the spring gear didn't look more closely at copying the cub gear as it seems to have worked quite well for the last 70 yrs without buckling the fuse sides. 

Trying to copy cabane gear article:  2 pages

EDMO

Something is not right here - I tried to download 2 pages, but can only read one - if any of you experts can straighten this out, please do - otherwise I will try tomorrow to post the other page.

I do well to turn the puter on!

Ed

Jim,

     If I can get daughter to help this late - otherwise, tomorrow.  I am still learning on this new-fangled stuff.

ED

Under files and forms.  Or search this site for "pursang".

Mk IV fell through?

Let her rip Ed,  Jim

I have a copy of the Pazmany Landing gear book, and was looking for the Storch gear setup - He didn't put it into this book because it is in the other book of Storch plans he sold.

However, I did find some drawings with angles and forces for the cabane spring type gear.  Seems like when the angle between the gear leg and the cabane leg is increased from 15 degrees to 28 degrees, the forces are a lot less.

If anyone wants this posted, just say so, and I will attempt to post it.

EDMO

Is there more information about this plane somewhere? I'm in the market right now! This would be awesome.

Folks,

John Larson is selling his Pursang aka Avid Mk V.

$19,500.

There's not much more to say, I wish I had the cash lying around, I would jump on it!  Please, someone cool buy it.  And then let me fly it!

I'd be happy to put you in touch with him.

Mark

Thats awesome news Chris ,I dont feel quite as bad now,hope they work out for you guys,  I had to do quite a bit of fiber glassing to make the wider  cowl work but had no other options  ,now as long as I don't have to cut out to much  adjusting the thrust line up i'll be happy

Like getting back on a bike again, eh Joey?

Great to know Chris! Me thinks Ron Smith might suddenly see his Tomash judgment spoils paying dividends again soon. Just hope he is reasonable with his prices if he decides to put them to use and sell direct. Some KF parts prices are through the roof crazy, at least Ron is not trying to fund an aircraft co. in increasingly litigious times.

Well, in many regards it is a good fit. The rear edge of the KF7 boot cowl lines up perfectly with the front door frame (note in my pics that I have the whole cowl blocked forward just a bit which might lead one to believe the cowl is not long enough to reach, which is not the case). Also, the windshield curve looks to be nearly perfect, although that is not a big issue as I already plan to attach the lower edge of the windshield to a curved metal support strip rather than bond it to the glare shield or boot cowl. I am in the process of replacing the windshield in my Aerotrek which was bonded to the boot cowl AND the glare shield and I could skin the idiot who decided that was a good idea. Even the lip rake looks very close, but the major problem is that KF lengthened the 912 engine mount and FWF kit for the model 7 and, as a result, that cowl is very, very long.

Grafting an entire KF7 FWF to the lighter Avid+ frame results in an unworkable W&B. If you use your existing (shorter) Avid 912 engine mount, I suppose you could shorten up the top and bottom split cowls but that is a whole lot of work due to the taper of the 912 cowl. Much less modification for you if you just use a KF 5/6 version 912 smooth cowl. Not sure the differences in measure from FW to prop flange for your existing 912 engine mount from Avid vs. the KF 5/6 mount (do you have the one pictured in the attachment?), but it would be a lot closer.

In my case, I still need to find, fabricate or modify an engine mount anyway so that's why I was leaning to the smooth cowl and engine mount from the KF 5/6 912 FWF. Would be easy for me to add a few new engine mount attach bushings to my firewall and adjust thrust line height for the KF engine mount. Now that the Airdale Flyer cowl mold has been located (good work!), I am very interested in learning more. I've been too busy to pick up the phone but if the $$ are right and fit is better than the KF 5/6 cowl (and I think it will be) I just might do that. Would also give me the incentive to forego the KF engine mount and fabricate something similar to the 912 engine mount in my Aerotrek, I like the rubber FW donuts and integrated nose gear weldment. Very clean, efficient FWF on that plane, IMHO. In fact, I bought the Aerotrek to use the FWF on the Avid+, but decided to repair it instead.

Again, great job finding the molds Chris. Please let me know if Ron can pull some measures off the molds for us.

yes Jim,  sometimes the silence is deafening!

EDMO

Thanks guys for the Airdale Soob cowl info - If I cant make the Raven / Kitfox work, then this looks like a possible fit.

EDMO

I am selling my floats

My location is Gothenburg Sweden

They are original Avid floats from -92, and have not seen much use.

//Hans

I'm beginning to see that it wouldn't be worth the trouble for me to source all the parts and go that route. Especially after a very late night/early morning insomniac attack gave me time to do five hours of research for hubs with no real good answer other than it would be cheaper to build my own by far. Now if I just had a lathe....

If I was flying in AK I would probably go this route but for me I guess it makes more sense to just stick to paying a little more for tires.

I love seeing where your wallet and iphone are stored for flight!

what camera are you using?  I have been looking for another cam that I can plug the head set into.  years ago I used a suction cup microphone from radio shack on the head set and plugged it into my monster VHS camera for doing inflight videos, but I have not seen one of the smaller helmet cam types with an audio in port on them.

Looks like a good day of flying!

if your flying off the soft rough stuff, the tires your running dont compare to the nanco's  in sand and gravel the nancos are alot easier on the airframe and will get you off the ground quicker as they dont sink in as much.  They are also lighter.  But I agree if your flying off pavement, the 21s you have will last MUCH longer!  It is pretty much the old argument that 90% of the pilots flying supercubs these days would do just fine running 8.50's... but due to the little dick syndrome they have to go out and buyt 35" ABW just to look cool in the hangar and on the apron.

Welcome home, again, Joey.  Fun video.

Like Leni said, the Douglass wheels and welded on tabs for the rotors are the easy part.  The hard part is the hubs.  I have yet to see a source for them.

Personally, I don't see the attraction to the 8" wheels.  Yes, ATV tires are cheap, but they don't last very long compared.  The brakes SUCK.  Big time.  You can mod the peddles to help, but they still suck.

I went to  the 6" Grove gear with matching wheels and brakes.  The brakes are far better without any need to mod the peddles.  I am running the 21x800x6 tires which are the same diameter as my ATV tires were.  They will last many times more than the ATV tires at still a reasonable cost ($100 ea).  The brake pads are easy to find and service.  As are the rotors.  Parts replacement do not require machine work or welding.  Everything is off the shelf and readily available.

It's one thing if this is the equipment you have with your plane or Kit and are just building it.  But to go through all the trouble to replicate this setup seems a waste.   To me this is the same old principal of chasing good money after a cheap solution that will eventually cost more than doing the job right the first time.

Nice to see can't belive how smooth the air is.Last 2 times I went turbulence beat me up pretty good.So from what I can see of it you have the 2 blade warp screwed back on the gear box.Give up on the ivo already?

Glad you're back

Mike

Ron Smith (other Cowl thread) has the Airdale cowl mold. The one and only as far as I know. It has two different fronts he can mold into it, presumably for differnet engine options. here are the pictures he sent me. He said he would pull the molds out if we need more detailed pics. Keep in mind thes are molds not cowls, so you have to use some imagination.

Ron is contacting Jerry Mattison(sp?) to get more details and is going to get back to me.

I am currently trying to find out how much different the Airdale flyer is than the Flat Avid WRT cowl meeting windscreen and fuselage.

Holy Crap! Thanks for posting those pics of the KF cowl! I'm going to study them! A lot there to take in.

Very interested in the KF 7 cowl fit. Did it look like it would work well? That was an option it recently occurred to me to consider it.

Does anyone know the differences if any between the Fat Avid and the Airdale Flyer WRT cowl fit? It looks like the cowl mold Ron has is for the Airdale.