Jungster 1 & 2 aircraft

[Tiger Tim]

I feel like I’ve heard the Jungster I is not an airplane for a tall guy. Can anyone confirm or deny that?

 

[Dominic Eller]

Hi Tiger Tim. I am 6’2” and fit perfectly well in the standard seat and with the modified lowered seat will still be fine and have the top of my head at the level of the rear turtle deck.
I will be moving the panel and the tension member forward to ease access and bail out option for longer legs.
This does mean standard depth instruments would require a smaller fuselarge fuel tank, which can always be solved by building the center section tank or using shallow depth instruments like the Kanardia ones.
I’m sure other solutions with the shape of the bottom of the panel could be worked out to allow standard depth instruments too.
It’s not a very wide cockpit so broad folks might find it too narrow.
I’ve managed to get full aileron throw and not have interference from my skinny thighs too

 

[edwisch]

.... for Standard Category aircraft.


BJC

Nope. Applies to experimentals also unless specifically excluded in the operating limitations.

 

[Dominic Eller]

I am in possession of this Jungster 1, landing gear had serious issues with seized spring assemblies when purchased.. work still in progress.

Any progress on your Jungster 1 Andy?
I would love to see some more pics of her.
Hope all is well

 

[andyvg52]

Any progress on your Jungster 1 Andy?
I would love to see some more pics of her.
Hope all is well

Recovering from knee replacement surgery, not progressing too much project wise, took some more pics; thinking of buying gear legs from Aviatorbell, toe-in intolerable from past landing crunches! Straightened somewhat using farm tractor repair techniques, but still not enough..!

 

[Dominic Eller]

I hope your knee mends quickly and well!
Cheers for pictures.
I’m trying to sort the gear out on ours,Seems it’s been altered from the original gear a little.
The cross piece that connects the spring is not as deep as the original gear from when it was new. Seems to hold the gear at a more narrow stance when unloaded, it’s 37” from disk to disk and about 42” from centre of each tire.
Not sure if the weight will bring it out a bit and bring the tires more straight up and down, reducing 5 deg positive camber and fair amount of toe out.
Seems if I lower the upper spring rod pivots I can widen the stance a bit without inducing toe in. Seems to have toe out in wheel attitude and neutral in 3 point ( but I’m guessing a bit here)
Does anyone know how much if any the springs will give under the flying weight of say 850-900lbs ?

 

[andyvg52]

I hope your knee mends quickly and well!
Cheers for pictures.
I’m trying to sort the gear out on ours,Seems it’s been altered from the original gear a little.
The cross piece that connects the spring is not as deep as the original gear from when it was new. Seems to hold the gear at a more narrow stance when unloaded, it’s 37” from disk to disk and about 42” from centre of each tire.
Not sure if the weight will bring it out a bit and bring the tires more straight up and down, reducing 5 deg positive camber and fair amount of toe out.
Seems if I lower the upper spring rod pivots I can widen the stance a bit without inducing toe in. Seems to have toe out in wheel attitude and neutral in 3 point ( but I’m guessing a bit here)
Does anyone know how much if any the springs will give under the flying weight of say 850-900lbs ?

I just measured disc to disc on mine -43"- , your gear will definitely spread when attached to an airplane.. I had also removed 1/2" shim from each spring assembly leaving wheels with a couple degrees negative camber.. having ground looped once doing a not-so-fast taxi test out in Idaho, aircraft needs a 'wider stance' and 0 to slight toe out for stability, IMO..

 

[Dominic Eller]

Cheers for measuring your gear
I’ve nearly got my gear mount holes drilled.
Seems this gear might have a nifty way to adjust the toe. There are little articulated blocks at the base of the spring struts and by packing the top attachments of the spring struts fore or aft the toe changes. I haven’t throughly investigated this yet but last night when I turned the fuse up the right way this came to light.
I hope to get her back on her gear temporally today.

 

[Dominic Eller]

She’s back on her gear…..temporarily.
The gear length is built for 6” rims and it’s only got 5” ones, think it will need taller tires to give enough prop clearance considering the length prop a Verner 7U can spin. could go 3 blade but a 2 will look and likely perform better.
Now I’ll finish the new lowered lighter seat and finalize the elevator push pull tube assembly length and stops, trim, rudder cables, finale instal of floor, brakes and pedals, new fuel tank, instrument panel ….etc etc… the list is long !
Not to mention making new cabane and front interplane struts.
I have to stop myself thinking of all the details involved in the big picture or it gets overwhelming and I doubt my ability to finish it! Just one bite at a time right!

 

[Dominic Eller]

I’m making small progress each day now.
Elevator push/pull set up is all sorted now.
Made a new cantered stick, I’m loving the new grip! re purposed vintage style electric bike grip, I’ll drill the top and fit a PTT switch.
A question, with old Cleveland style brake cylinders, when the brakes are set up do the cylinders depress the full travel? I would think not ? I would imagine with new pads the volume of the piston is smaller than the cylinder so would not need full travel to achieve braking…reason I ask is for full cylinder travel on the pedal with full rudder the fire wall just gets in the way a little. I can adjust that out but the angle your foot has to bend back to have toes on brakes and mid foot on rudder bar is a bit much.

I found the picture of the black and white “Top hatters” Jungster 1
Does anyone know about this project ?
I love that livery!

 

[Tiger Tim]

I recently heard of (and saw pics of) a Jungster that was very nearly complete when the builder passed away. This thread is really pushing me towards finding out what’s happening with that airplane...

 

[Dominic Eller]

Go find it! I’m sure the builder and family would want to see it completed!
Post pics !

 

[andyvg52]

N

I’m making small progress each day now.
Elevator push/pull set up is all sorted now.
Made a new cantered stick, I’m loving the new grip! re purposed vintage style electric bike grip, I’ll drill the top and fit a PTT switch.
A question, with old Cleveland style brake cylinders, when the brakes are set up do the cylinders depress the full travel? I would think not ? I would imagine with new pads the volume of the piston is smaller than the cylinder so would not need full travel to achieve braking…reason I ask is for full cylinder travel on the pedal with full rudder the fire wall just gets in the way a little. I can adjust that out but the angle your foot has to bend back to have toes on brakes and mid foot on rudder bar is a bit much.

I found the picture of the black and white “Top hatters” Jungster 1
Does anyone know about this project ?
I love that live

I’m making small progress each day now.
Elevator push/pull set up is all sorted now.
Made a new cantered stick, I’m loving the new grip! re purposed vintage style electric bike grip, I’ll drill the top and fit a PTT switch.
A question, with old Cleveland style brake cylinders, when the brakes are set up do the cylinders depress the full travel? I would think not ? I would imagine with new pads the volume of the piston is smaller than the cylinder so would not need full travel to achieve braking…reason I ask is for full cylinder travel on the pedal with full rudder the fire wall just gets in the way a little. I can adjust that out but the angle your foot has to bend back to have toes on brakes and mid foot on rudder bar is a bit much.

I found the picture of the black and white “Top hatters” Jungster 1
Does anyone know about this project ?
I love that livery!View attachment 114200View attachment 114201View attachment 114202View attachment 114203

Nice work, brake pedal travel should be minimal if well bled.. I bought pedal and brake cylinders from AirSpruce to replace heel operated Scotts, mounted on small shelf, much more comfortable.. are those alum. floor panels, and what did drive you coat longerons and crossbars with..?

 

[Dominic Eller]

Hi Andy, cheers, re brakes, yes that’s what I would expect, good to hear confirmation.
yes 2024 floor panels, new one under rudder pedals a d originals either side of stick.
This fuse has a grey primer over all of it. I Norski epoxied where I repaired the longerons up front. I put a different grey primer on the cockpit area just neaten up what’s visible once finished. I wanted to leave the structure showing the mish mash of the various coatings this aircraft has had over the years, so if someone else does a recover/restoration in the distant future they will be able to easily see what’s been done.
I’m also going to attach an SD card to the airframe with all the pics and vids of the rebuild and history I have of this aircraft for the next person.
I also white colour pigmented the Norski epoxy and put this anywhere the Oratex covering will attach so none of the dark brown colour will bleed through.

 

[Dominic Eller]

I’ve tidied up a couple of jobs and started on making new cabane struts as the old ones don’t fit so well now the fuse front top longerons are all straight and true, they also have the ominous sound of sand (rust!) inside when they get tipped over
I rigged up an adjustable jig to hold the C section while I tack up the cabanes. I’ll box in the streamline tube cutouts and finger strap over the top.
If anyone has any tips or tricks in tackling this job I’m all ears.

 

[Dominic Eller]

I’m slowly getting these cabanes sorted.
More than once I’ve thought this job might be a bit above my pay grade, but lots of thinking before cutting and making test bits out of the limited scrap streamline tube I have has got me to the tacked up point. Just making up the finger straps and boxing them in to go. These are of course a little tricky to make with a good fit up for welding due to the 11 deg wing sweep, the bushings are at an angle to the CL of the streamline tube. I’ve used the streamline tube parent material to align the bushings, then the finger straps will go over the top. If I did the job again I would probably just cut the tube off sq and finger strap straight to them, would have saved a bunch of time but the way I did it left me more options during my learning and has worked out ok.
I’ll be pleased when this job is ticked off the list! Finished making the tangs I’ve been putting off for ages too .

 

[TFF]

Those look really good.

 

[Dominic Eller]

Thanks

 

[Fighting 14]

Hi Gang,
I bought one of Benners Jungsters 15 years ago. It is licensed as number 4 but as far as I know he only built 2. If anyone can shed any light I would love to know. I flew it from Georgia to Texas. It was a 2 day trip. After getting it home it became apparent that it needed much TLC and attention. It was in pretty sad shape. I even considered scrapping it. It is about to take to the sky again. I am based in Wyoming at 7300 feet, so I am getting my feet and hands back in touch with this twitchy critter by doing high speed taxis with the tail up and doing engine testing. I also fly sailplanes and a C-180 and N3N-3 up here as well. This is not flat country and the last thing I want is a forced landing. Here are some pics which I hope will energize others to keep plugging away. This is the second Jungster 1 I have been involved with. The first was one that friends built and I helped test fly when I was in college. I added a new starter and mags and replaced the old engine. I use a Co-Pilot Battery Pack for starting and after start the battery is stowed. Note the ribs added to the gear legs. Right now I have a mag harness issue which should be corrected in a few days. Pay attention to your C.G. if you are using a wooden prop. You can end up tail heavy if the engine mount is not long enough.

 

[TFF]

Good looking.
The booster pack does ok with no airframe battery? I set my Starduster up with no battery but a starter. Leaving battery on the ground is the plan. It would be nice to have that as an option.