What was that thumping great gass engines up the page. Is that the one people are strapping to their F3A planes?
Je'z it's huge. Heavy? Sure looks like it.
OK, so it's sitting next to a smaller engine but?

http://www2.hobbynet-jp.com/overseas/index.shtml

look under hobbynet parts..

they have many off the nice smal japanees part we wants , have been some talking about delivery problems , i got mine stuff several times no problems so i dont know!

Is anybody flying one of these on a Pletti,, Axi etc .If so how does it go ??

Did you tint that canopy yursef? If so how?

Painted using RC car paint.

Thank you Derek, it certainly looks the part.I have read about attempts to use a die but that sounds so simple and improves the looks.

It took me about 5 minutes to prep and paint... I used Pactra Candy Blue - RC272.

Hi

Take a look (post 153):
http://www.rcuniverse.com/forum/m_65...tm.htm#6851600

Isaac Najary

Hi;

What is the clearance between thrust line and the ground with the stock landing gear? I wonder, if 22 in propeler fits while converting to electric drive.
Also, is the nose mounted Axi motor viable option in terms of fuse strength and available space?

Thanks

Weg

Weg:

I would like nothing better than to build one of these as an electric, but I have run the weights many times, and it always comes out significantly over weight. An Axi outrunner setup with 5300 ProLites from Thunder Power will be at least 8 -12oz over. The FLight Power 5350 batteries will be even heavier. The heaviest a complete airframe can weigh without any radio or motor installation is going to be 5lb or 2270g. This is if you plan to use the Axi F3A motor. The Plettenberg or Dualsky will save you some weight as well as using smaller batteries, but will still be over 5kg. If you want to run an inrunner, the weight of the airframe can be a little more.

ual767;

Thanks for info. It seems I have to find another airframe more suitable for electric.
What about Shinden from the same company? Has it similar flying characteristic as Proline? Besides it's much cheaper.

Weg

Not sure if info,, is correct, as most people posting here say it finishes at 10.5lbs without trying. We converted 4 Astral xx's that were 4.75kg(10.5lb) at 4.93 to 4.95 kg.
We did change to 430ma li/poly (not a problem as only using 40ma/flight now), and remove all the IC dedicated infrastructure, most of the canopy floor area etc.
We are using Pletty,,'s .
New rules for 2008 allow 5050g max model weight.

Regards

Brian

Now I'm properly motivated to fly a contest this year.

Steve Ford

Serious,,

re-read the rules they are posted now.

The rule is still 5000g however there is now a 1% variance for the accuracy of the scale.

So technically yes 5050g is legal until you get a scale that reads a little high..now that the rules allows for a deviation for the accuracy of the scale there is now way to argue if you are over the limit. I have a pretty accurate Scale and its +- 1% for accuracy. I can weigh the same 5000g mass on 3 different days and it will drift 10-15g each day.

So no weight limit changes are in place just a realistic view that a 1% accuracy means you don't have to have a $1000 scale to weigh your pattern model and contest organizers are in the same boat. They don't need a really expensive scale.

The same deviation also applies to the sound readings. 1% deviation. 94bd(A) means 94.9 is legal but 95 is not. Again if you are in this range you are playing with fire.

Troy Newman

Hi

The tolerance of the sound/noise measurement is not 1% but is the specified tolerance of the manufacturer of the measuring instrument (could be 0% dependant on the manufacturer). It would appear having regard to the 2008 FAI rules that the 1% only applies to size, weight and voltage.

Of more concern is the fact that in terms of section 5.1.2 condition swithces and throttle curves that will prevent or limit max power or rpm during the sound/noise test is now not premitted and this could imply that the sound steward can take control of you tx and flick switches to look for these conditions. This should be an interesting one to enforce.

Hi Troy,
You are correct in what you say.
However there is a material difference between the old and new rule.
On any one set of weighing scales on any day max weight before was 5000g now 5050g.
With any one length measuring device the max fuz,,length/wingspan was 2000mm now 2020mm ......!

Regards

Brian

Steve, is that Simon Cowell on your TV? Jeezzzzz.....

Aresti,

Nothing like out of tune singing to keep your mind on planes. Actually, I was just relieved the usual porn wasn't on.lol

Steve

Well, mine is finally done. Unfortunately, it came in at 11 lb 0.8 oz. However, I don't know how accurate my scale is, will try it on another one soon. However, there is a 1% allowance on the scale, and I do think mine is one of the heaviest one out of all of the original 5 prototypes imported by BVM. Therefore, the actual production version may be slightly less. In addition, I don't know why the factory have installed a ladder crutch along the fuse. If it has the same construction as my Astral XX, I do not foresee any rigidity issue, and can definitely save some weight. may be some of you who has the production version can inform me whether yours has the same crutch arrangement or not.

Anyway, it took me about a month to complete the installation. Yes, I'm a slow installer/ procrastinator. Overall, a pretty uneventful process. It will be at least another two weeks before test flight, I have just sent my radio to Futaba to cure the infamous encoder problem. Here are the specs:-

Engine - YS 170 DZ

Prop - APC 17.25 x 10/11

Spinner - Pilot 89 mm

Mount - Flight Hobby designed by Akiba

Header - Hatori 823

Pipe - Hatori 821

Pipe mount - Nishioka 29 mm

Tank - K&S 600cc

Radio - Futaba 14 MZ with 5114 rx

Servos - 9154 x 2 ail, 9151 rud, 9255 ele

Battery - 4.8V, 4 cell, 1,500 mAh


Adrian

Scrape off that hot pink paint on the valve cover and you'll make weight no problem!

No can't do. The pink valve cover makes the engine runs better

Hi TWTaylor,
Have just my received my Proline -what a glorious machine. Will be using my OS 140 in the model. Any tips for set up, throws, mixing, CG etc? Have been flying pattern for years, but always appreciate others experience or short cuts! I will use tail mounted servos, dropped into the tail root & servo arm protruding thru a slot -should look neat. Its a system I've used before & provides redundancy & a direct linkage.
I notice there is no flat at the rear of the fus-so what's the best way of mounting a tailwheel?
best regards
Stuart Mellor

Hi Stuart

I don't recommend putting the servos in the tail. I've done them both ways and I suggest you use a single push rod system. My second one I did the twin servos in the stab and it moves the CG farther back than I cared for. It took enough weight in the nose to make the airplane near maximum weight. It still is legal weight wise but it's closer than I like. I can't tell the difference between the two airplanes in the elevator feel.

I doubt the OS1.40 will have the power to fly this one with authority.

I do recommend you add a vertical former that runs from the bottom of the fuse up to the crutch right at the leading edge of the stab. The one week area I've found with both of mine was in this area. What happens is the stab can rotate in the yaw axis because the fuse sides are not stiff enough in this area. Put the elev on and then grab the tips and try to move them in the yaw axis and you'll see what I mean, the stab rotates pretty far. It's a simple Mod to do, I used a long rod with a bolt glued in the end to screw this plate to so I could position it properly in the back of the fuse. Then I could unscrew the rod and take it out. Then glue the former in.

If I remember correctly I'm flying around 8 degrees of elev travel, all the rudder I could get and 12mm on the ailerons as measured at the tips. CG is 190 from the leading edge of the wing.

I have a spec sheet for cutting the holes for the rudder cables and the elev push rods holes. I'll send it to you if you'd like.

Hi TW,
Thanks for the tips. I would appreciate the position of the lead out holes -strange that these arn't moulded in on a glass fus.
Have use mini rear ele servos in my last 2 Oxalys & they work fine. Even better on the proline -the servos will slot into the roots on a ply mount & only requires a slot cutting in the lower surface. Should look neat. I would never use this system on a 4 stroke though -too much vibration. I also toyed with an electric version - but I doubt there is room in the undebelly for the battery & mounting the battery in the fus with no cooling is not an option!
Will certainly look into reinforcing rear of fus.
Many thanks

Stuart

I have those fact sheets at work. I'll post them in the morning.