sidav

hello need some advise again,arc jupiter, what degree is the engine serposed to be?,i seem to have to mutch up thrust,havent flown it yet but when i do i want it to be right...thanks si[&:]

red head

If you installed the engine mount correctly, it will be right and on that plane it would be pretty hard to screw it up.

That engine mount is bolted right to the firewall and the engine is mounted directly to the mount, no spacers etc. If that's how yours is, you should be OK !!! ENJOY !!! RED

tony221264

Hi Sidav
from memory i think the engine is mounted horizontaly, make sure the mounting lugs on the engine with the screw holes in them are in line with the sides of the engine mount, if you have the engine skewed in the mounting it will give you up or down thrust. hope that sounds clear.
regards Tony

porto

Hi guys just got this model given to me as a gift, but have no instructions and looks like some one before put it toguether very badly, so i am having to dismantle all the bits and start again! All the glue that was used on the model is kind of coming of and i am not taking any chances... a bit more work but will be better, but need some advice; should i use epoxy or med CA?? If some one was kind to email me a copy of the instructions would be nice!

Many thanks in advance,

Marco

checkmate91

Well, I've put three of the ARC kits together now, first used epoxy (which fell apart), second used plastic cement (which didnt fall apart) and third used cyano which is holding up fine. Personally I'd go with the chemical glues which really bind the surfaces together, epoxy just seems to sit on top and, once fuel residue gets in the way, eventually falls apart...

I don't have Jupiter instructions (having only put together a ready2 and beaver), check out their website http://www.arcmodelfly.it they appear to be thinking about making instructions available (but not yet), a flying buddy of mine has a jupiter however and I can ask him to see if he still has the instruction sheet if you need it.

Regards,
Andy

porto

Checkmate91,
Thanks for the help, have scrapped all the old glue off the bits was a major job, now will glue it all again hope will work. Have a ervine 53 should be a good motor for it!? If there are any advice please let me know guys, I do whant to fly this plastic beast this weekend so if I can will post some pictures or video!!!
Once again any tips or mods from the pros, please fire ahead...
Many thanks in advance for your help.

Happy flying

wrob

Hi,

I have the Jupiter. If I remember correctly, there are three plastic pins that you glue into the fuselage to index the firewall to. In other words, you push the firewall up to these pins and the thrust angle for the engine is set. The engine mount is of the ordinary variety. A circular back with two beams which you mount your engine to. It screws to the firewall. You have to grind away at the beams which the engine rests on to get the proper width for your engine.

The Jupiter flies well but it's not my favorite plane. I've been experimenting with my CG but can't get the plane to land smoothly. It really likes to bounce - the springy landing gear doesn't help. The firewall is hollow, unlike the Beaver, which allows the engine to vibrate quite a bit. The wing doesn't index to the fuselage (like the Beaver) - only held on with one bolt. I put some spruce on the wing so that it mates with the inside of the fuselage keeping the wing / fuselage more ridgedly fitted when assembled. Mine has an ASP 61 4-stroke in it, which I really hate (not the engine just the combo). Makes the plane fly slower than I'm used too. Wish I had put a 2-stroke something in it. Eventually I'll change the engine, figure out what's up with the landing, or give the plane away...

PS There's little dimples in the fuselage that you drill out to put the pins into. Pins look like thumb tacks with round heads. Once they are glued in place, push the firewall in place from the wing saddle opening in the fuselage.

red head

WROB : Try keeping a little more RPM on on your landings. Also set the CG at 85 mm and it should work fine.
They do have a tendency to bounce a bit if you are to slow. I've owned a few of them and I really enjoyed them.

I never had a vibration problem either, but I never had a 4cyl on mine either, sounds like you may have a problem maybe with the prop or the way you mounted the engine.

As far as indexing the wing, if it's set in right and tightened tight, you won't have a problem. ENJOY !!! RED

wrob

Cool... I'll check my CG this weekend. I've already put Dave Brown low bounce tires on it - no help.

Ocassionally, I've seen posts on the web complaining about wearing out the plastic bolt. I'll eventually have to go to a steel one, so that I don't worry about it. I figure keeping the wing as stable as possible will take some wear off that bolt. I'm working on a Four Star 120 right now. Can't find a prop reamer that's 10mm locally - I'm stuck. Will problably have time to look at the Jupiter this weekend. The weather here is very windy.

red head

I don't suggest a steel bolt !!!! That's a good way to really mess up a good plane. I have flown ARC planes for years and have only had to replace one bolt and that was because I caught a wing tip and twisted the wing around and streached the bolt. If you put metal ones in you will most likely end up tearing out some of the interior structure.

I hate to rain on some of your parades but ARC puts out a GREAT plane if you don't try to fix it your way. Ever hear the saying " if it works don't fix it ". Put their planes togeather the way they say and just GO FLY THEM.
ENJOY !!! RED

wrob

The company is Modelfly...

Here's a review where a guy has been through three of these and had bad results with the plastic screw.

http://www.flyingsites.co.uk/reviews/arcbeaver.htm

If you get your hands on a Beaver, a model introduced later than the Jupiter, you'll see that Modelfly has incorporated the changes to the wing saddle and firewall.

The Jupiter is my windy day plane. Nothing to write home about. Build and fly yours how you want (LOL).

red head

WROB : check your instructions for the Beaver and just above picture #1 is the logo !!! Modelfly / ARC The first planes sent to the US were labeled ARC but due to the confusion ( ARC meaning almost ready to cover in the US market at the time ) the ARC wasn't always used in the States trying to keep the confusion down. Modelfly was used in most adds. ENJOY !!! RED

hickoryrib

My Feedback: (3)

Anybody know where to buy a jupiter or carousel in U.S.A. model fly said hobby people they only have ready and beaver and said they will not be ordering anymore with arc THANKS

red head

I don't know of anyone in the U.S. selling any of the modelfly planes but I did hear that Thunder Tiger was going to handle them for what that's worth. ENJOY !!! RED

Big Stimie

My Feedback: (2)

Does anyone have the instructions for putting together the Jupiter? I just picked one up and it does not have instructions.

red head

Big Stimie : I don't know how bad you want the instructions but here's an offer. I am leaving for Howell Mi. Tue. and plan on being there about Friday the 17th. I have the plans but am not willing to part with them. If you want to get togeather and copy them while I'm there we can do that.

If your interested you can call this # on Friday. 734 657 4242 AFTER 10 am. I'll take them with me. By the way, I WON'T be on the computer for about a month. ENJOY !!! RED

Big Stimie

My Feedback: (2)

Thanks to everyone for the replies and emails. I ended up finding the "instructions" through a hobby shop and just ordered it so I could make mark ups..

Big Stimie

My Feedback: (2)

Here's one that I did not find in the instructions? Can owners of the ModelFly Jupiter tell me how they mounted the fuel tank? Thanks,

Big

red head

BIG, I'm back on line and back in Fla. Sorry we didn't get togeather in Mi.

Now if you have the same sheet I have here's your answer to the fuel tank. Check Item 60 & 61 on your sheet. It shows the tank and a rubber like " O " ring around the front of the tank. When put on as in Item 61, you PRESS the tank into the motor mount opening and it holds the tank in place.

If you wnat you can also put some kind of support at the rear of the tank. I usually just stuff a piece of styrofoam in to make me feel better.

ENJOY !!! RED

Big Stimie

My Feedback: (2)

Thanks for the reply.. sorry I missed ya.. found it on line cheap and figured I could get it that way.

I will check those sections.. I must have missed that part. Thanks for the suggestion on the back end support.

Regards,

Big

Big Stimie

My Feedback: (2)

Hey everyone..

I got my Jupiter built and took it to the field last weekend.. Come to find out a OS.40 engine just will not get the plane off the ground.. I did not do any real damage but I now have a 90 Super Tigre that should do more than enough to get it moving.

red head

Big: that must have been a real weak 40 as I've flown a couple with 40's and they did OK. A 46 does real well and that's what I use most of now.
As far as a 90 goes : I think you are going to have a heck of a time getting it in the cowl, in fact I would have to go take a close look at mine but I don't think it will fit. I'm sure it won't fit the mount and you will play heck finding one that will fit.
Next, if you were able to get it in, that's WAY to much engine for that plane.
Now that I've steped off the deep end, I'll go farther and say Good Luck, but I think you are blowing smoke!! ENJOY !!! RED

faulknej

My Feedback: (9)

Have you checked the balance point?</p>

texaswarbird

try throttlestore.com

texaswarbird

here is my new plane. There were few troubles, mostly with the engine mounting in a tight space. I threw away the tank. It's too small. I used a 13oz Dubro. Be sure not to install the landing block before you install then engine and gas tank if you want to do my way. I put CG at 85 mm, and actually it balanced itself with an Evolution 46 upfront, and 4 AA batteries side by side with the fuel tank. Sideway balanced itself too. I don't have to add any extra weight. The stock color looks uh uh. I sprayed the fuse and wings with a white can paint I bought at Lowe; the tail assembly, wing jointner, and propeller were sprayed in blue to match the blue spinner. Hey, y'all need to enlarge the holes of the spinner a little bit to fit the prop. One more thing: the wings felt unsecured with just one bolt. I drilled a hole at the front edge of the wing to fit a dowel, and a hole in the fuse for the dowel to fit in. This plane is simple. I tossed it in my wagon, worry free about scratches that are so common with balsa coverings. In case you mood changes, just sand the old paint away, and spray on whatever you like. When the day is over, an old T-shirt and Windex should make it shine like son of the gun. Out there some where, in the October blue sky and a white plane and the engine roars, uh uh, it's just.... perfect.