*Modeltech Formula ARF 3D Competition 46-60*
05-14-2005 | 11:53 AM
#1
*Modeltech Formula ARF 3D Competition 46-60*
Hobby People now has this kit in stock. It's rated for a .46-.61 engine at 6.1-7.7 lbs. and I was just wondering if anyone has any info on the plane. I'd like to get one and put my OS .61FX on the business end but I want to make sure that engine will have enough power to have a good pull out in a hover.
05-14-2005 | 03:50 PM
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From: England, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
I was considering this plane and have been advised to use an OS .91 FX with a 16*4W prop. Try this 3D site for more info
www.3drc.info
www.3drc.info
05-14-2005 | 08:10 PM
#6
RE: *Modeltech Formula ARF 3D Competition 46-60*
I got to looking around at other planes of about the same weight rage and the Lanier Stinger 60 ARF is rated for a .61-.90 2S at 6.5-8.1 lbs. and the Ultra Stick .60 ARF by HANGAR 9 is rated for a .61-.91 2S at 6-7 lbs., so it looks like the .61 on the Formula 3D may be on the lower end of the spectum for good 3D performace. All we can do it wait til people start buying the kit and post just what engine they are flying and how the performance is.
05-14-2005 | 10:11 PM
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RE: *Modeltech Formula ARF 3D Competition 46-60*
Manual said – weight varies from 6.1 to 7.7 which is huge difference.
And engine 46 – 61 two stroke and 60 - 70 stroke which is not compatible for 7.7 even for patern.
Another hand base on manual, plane have prepared nuts for engine mount and recommend using magnum 70 4 stroke for 3D.
That definitely looks strange.
http://www.hobbypeople.net/gallery/123771.asp
And engine 46 – 61 two stroke and 60 - 70 stroke which is not compatible for 7.7 even for patern.
Another hand base on manual, plane have prepared nuts for engine mount and recommend using magnum 70 4 stroke for 3D.
That definitely looks strange.
http://www.hobbypeople.net/gallery/123771.asp
05-15-2005 | 03:20 AM
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RE: *Modeltech Formula ARF 3D Competition 46-60*
The formula 3D is on my short list as I have the .91 FX. Do you think it would overpower the plane as it’s a long way over the recommended engine range? I know that 3D requires power but I don’t want to overdo it.
Also the specification for this plane and the Seagull Harrier .90 are very similar (wing span, length etc) and the engine recommended for the harrier is a .61 to a 1.00 2 stroke, just to give you an idea.
If it is the case that it requires a .91 or similar why do you think the manufactures recommend engines which will not give max performance? It is in the manufactures interest to have a good performing plane.
Also the specification for this plane and the Seagull Harrier .90 are very similar (wing span, length etc) and the engine recommended for the harrier is a .61 to a 1.00 2 stroke, just to give you an idea.
If it is the case that it requires a .91 or similar why do you think the manufactures recommend engines which will not give max performance? It is in the manufactures interest to have a good performing plane.
05-15-2005 | 08:23 AM
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RE: *Modeltech Formula ARF 3D Competition 46-60*
I am going order that probably next month, and based on weight will use or MVVS 61 or 77 if that closer to 6lb, think that may be good enough, if that closer to 8lb may be YS 110.
Meaning 3D flight, as far as my knowledge, most expensive for engine is hover – where only weight is considered not length or wind span.
I think if You have 91 that is not a problem with over power it self, just do not user full throttle, problem with over weight on nose that may give a problem with balance.
A little extra weight on the plane with 1027 sq in should not be a problem, only balance.
If I’ll get more information from hobby people I’ll keep You informed.
Meaning 3D flight, as far as my knowledge, most expensive for engine is hover – where only weight is considered not length or wind span.
I think if You have 91 that is not a problem with over power it self, just do not user full throttle, problem with over weight on nose that may give a problem with balance.
A little extra weight on the plane with 1027 sq in should not be a problem, only balance.
If I’ll get more information from hobby people I’ll keep You informed.
05-23-2005 | 03:58 AM
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From: Wolverhampton, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
The Formula with an OS91FX is awesome. Bear in mind this is a 3D fun machine lightly built and you will be operating outside the manufacturers recommendations. With that amount of power brace the tail plane either wire or carbon rods top and bottom we run APC 15x6 makes it a very quiet airframe.
05-23-2005 | 07:54 PM
#12
RE: *Modeltech Formula ARF 3D Competition 46-60*
This is one cool looking plane. I wish someone that has bought one and flown it would give their input as to the final weight and what engine they are using. If my OS .61FX will take it vertical for 3D I'd think about buying one.
05-24-2005 | 05:59 AM
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From: MidWales UK, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
Some info for you,
The YT Formula has been available in the UK for a year, many are flying here.
My formula with a saito 91 running a Apc 15x4 , came out at 5lb 10 oz dry,
even with a 7 oz nicad tight to the bulkhead, to get a slightly
rear CG, the plane tends to come out tail heavy.
The plane fly's brilliantly and is very forgiving, very thick wing section.
Has masses of power, hovers well under half throttle.
You will need to use throttle manegment, on large engine setups.
Have very close to 200 flights on mine now, and it still looks new.
Good 3D setup would be the Saito 82 and a 14x4 prop.
The YT Formula has been available in the UK for a year, many are flying here.
My formula with a saito 91 running a Apc 15x4 , came out at 5lb 10 oz dry,
even with a 7 oz nicad tight to the bulkhead, to get a slightly
rear CG, the plane tends to come out tail heavy.
The plane fly's brilliantly and is very forgiving, very thick wing section.
Has masses of power, hovers well under half throttle.
You will need to use throttle manegment, on large engine setups.
Have very close to 200 flights on mine now, and it still looks new.
Good 3D setup would be the Saito 82 and a 14x4 prop.
05-24-2005 | 08:58 AM
#14
RE: *Modeltech Formula ARF 3D Competition 46-60*
ORIGINAL: Xup
Some info for you,
The YT Formula has been available in the UK for a year, many are flying here.
My formula with a saito 91 running a Apc 15x4 , came out at 5lb 10 oz dry,
even with a 7 oz nicad tight to the bulkhead, to get a slightly
rear CG, the plane tends to come out tail heavy.
The plane fly's brilliantly and is very forgiving, very thick wing section.
Has masses of power, hovers well under half throttle.
You will need to use throttle manegment, on large engine setups.
Have very close to 200 flights on mine now, and it still looks new.
Good 3D setup would be the Saito 82 and a 14x4 prop.
Some info for you,
The YT Formula has been available in the UK for a year, many are flying here.
My formula with a saito 91 running a Apc 15x4 , came out at 5lb 10 oz dry,
even with a 7 oz nicad tight to the bulkhead, to get a slightly
rear CG, the plane tends to come out tail heavy.
The plane fly's brilliantly and is very forgiving, very thick wing section.
Has masses of power, hovers well under half throttle.
You will need to use throttle manegment, on large engine setups.
Have very close to 200 flights on mine now, and it still looks new.
Good 3D setup would be the Saito 82 and a 14x4 prop.
05-24-2005 | 11:55 AM
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From: MidWales UK, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
Plane is very light to start with, it wont be a problem to get Under 6lb.
do a search on here for the Magic Formula, I posted a pic and all the individual component weights
of it last year.
only thing I changed, was the OEM piano wire Pull pull system, bit heavy
just changed is for a SS wire pull pull system.
Going with a saito 82 would save 4 oz off my weight, CG might become an issue though.
You need 6 servos for the plane 2 on elevator.
YT stands for Ytinternational , have a look at their site, some awesome models there
Link
http://www.ytinternational.co.uk/
PS Slyms if y'r reading this I want another one
do a search on here for the Magic Formula, I posted a pic and all the individual component weights
of it last year.
only thing I changed, was the OEM piano wire Pull pull system, bit heavy
just changed is for a SS wire pull pull system.
Going with a saito 82 would save 4 oz off my weight, CG might become an issue though.
You need 6 servos for the plane 2 on elevator.
YT stands for Ytinternational , have a look at their site, some awesome models there
Link
http://www.ytinternational.co.uk/
PS Slyms if y'r reading this I want another one
05-24-2005 | 12:14 PM
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RE: *Modeltech Formula ARF 3D Competition 46-60*
Link to the original thread with the Pic, and weights of the components.
on page 2
http://www.rcuniverse.com/forum/m_14..._2/key_/tm.htm
on page 2
http://www.rcuniverse.com/forum/m_14..._2/key_/tm.htm
05-24-2005 | 12:51 PM
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From: Wolverhampton, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
The figure of 7lb is for the up graded Formula more suited to the larger engines.
As with all things the plane was designed for an engine range and then people like me started putting OS91FX's in them so Modeltech up graded the plane. The wing is and control surfaces are very efficient allowing you to rolling harriers at near enough zero forward speed in no more than a gentle breeze.
Form more information and videos try http://www.ytinternational.co.uk/ and www.wmmfc.com
As with all things the plane was designed for an engine range and then people like me started putting OS91FX's in them so Modeltech up graded the plane. The wing is and control surfaces are very efficient allowing you to rolling harriers at near enough zero forward speed in no more than a gentle breeze.
Form more information and videos try http://www.ytinternational.co.uk/ and www.wmmfc.com
05-24-2005 | 02:01 PM
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RE: *Modeltech Formula ARF 3D Competition 46-60*
Hey Xup, good to see you're enjoying it.
As my good friend Kinverflyer stated the US model is slightly heavier than the original release in the UK. Though saying this it still should come out around the 6lb mark. The Formula will 3D on an Irvine .53 just, but with a good .90 it's unlimited.
YT International have designed several Fun Fly/3D/Freestyle models now, along with quite a few warbirds. This design is from a former UK funfly champion called Phil Vandries. We had to make a few small changes to aid manufacture and increase strength for every day use. As already stated when using the larger engines you have to make sure you don't fly beyond the safe speed of the airframe. By this I mean that large control throws using anything but the best servos and linkages can spell disaster for any 3D model when flown at speed, hence why the recommended power is set conservatively.
I hope this helps,
As my good friend Kinverflyer stated the US model is slightly heavier than the original release in the UK. Though saying this it still should come out around the 6lb mark. The Formula will 3D on an Irvine .53 just, but with a good .90 it's unlimited.
YT International have designed several Fun Fly/3D/Freestyle models now, along with quite a few warbirds. This design is from a former UK funfly champion called Phil Vandries. We had to make a few small changes to aid manufacture and increase strength for every day use. As already stated when using the larger engines you have to make sure you don't fly beyond the safe speed of the airframe. By this I mean that large control throws using anything but the best servos and linkages can spell disaster for any 3D model when flown at speed, hence why the recommended power is set conservatively.
I hope this helps,
05-25-2005 | 12:14 PM
#20
RE: *Modeltech Formula ARF 3D Competition 46-60*
ORIGINAL: slyms
Hey Xup, good to see you're enjoying it.
As my good friend Kinverflyer stated the US model is slightly heavier than the original release in the UK. Though saying this it still should come out around the 6lb mark. The Formula will 3D on an Irvine .53 just, but with a good .90 it's unlimited.
YT International have designed several Fun Fly/3D/Freestyle models now, along with quite a few warbirds. This design is from a former UK funfly champion called Phil Vandries. We had to make a few small changes to aid manufacture and increase strength for every day use. As already stated when using the larger engines you have to make sure you don't fly beyond the safe speed of the airframe. By this I mean that large control throws using anything but the best servos and linkages can spell disaster for any 3D model when flown at speed, hence why the recommended power is set conservatively.
I hope this helps,
Hey Xup, good to see you're enjoying it.
As my good friend Kinverflyer stated the US model is slightly heavier than the original release in the UK. Though saying this it still should come out around the 6lb mark. The Formula will 3D on an Irvine .53 just, but with a good .90 it's unlimited.
YT International have designed several Fun Fly/3D/Freestyle models now, along with quite a few warbirds. This design is from a former UK funfly champion called Phil Vandries. We had to make a few small changes to aid manufacture and increase strength for every day use. As already stated when using the larger engines you have to make sure you don't fly beyond the safe speed of the airframe. By this I mean that large control throws using anything but the best servos and linkages can spell disaster for any 3D model when flown at speed, hence why the recommended power is set conservatively.
I hope this helps,
05-28-2005 | 09:02 PM
#23
RE: *Modeltech Formula ARF 3D Competition 46-60*
I think I'll go with the Super Tigre G90. Need the power for 3D and fast pull out from hover. Is this plane still covered in the same covering that the Magic and Magic Extra were covered in ???
06-04-2005 | 02:07 PM
#24
RE: *Modeltech Formula ARF 3D Competition 46-60*
I can't believe that no one has flown this plane yet that can give their engine size and the performace I got to thinking about the engine size and I think my Saito .82 may be better suited for this plane. I'd like to here a little more about the plane before I order one. Is the covering still the same as their other planes? If anyone is currently flying this plane, lets us know what size engine your running and the performace.
06-05-2005 | 05:54 PM
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From: Wolverhampton, UNITED KINGDOM
RE: *Modeltech Formula ARF 3D Competition 46-60*
Myself and Stuart who flies for YT in the UK both run OS91FX's, the performance is unlimited, however as mentioned by Symon, careful engine management is needed. The Saito 82 would make a good combination, with regard to the covering, cant comment as to what it is. If it is a major concern I can find out for you.
