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AJ Acuity 2M Build
Hi
After the "mid-air" collision with a trainer in the beginning of the year , I lost my Bjcraft Nuance. I loved that plane!!!!! It was old but flew straight and it was very competitive. No plane for me to 2020 Portuguese Championship and the FAI F3A EUROPEAN CHAMPIONSHIP in Zamora ( If Covit-19 allowed ) https://cimg8.ibsrv.net/gimg/www.rcu...87684d105c.jpg Since the budget is not high, I decided to explore all possibilities. After some research and contacts (Thanks Shulman) I decided to go with AJ Acuity . One call to https://aerobertics.be/ and the plane arrived today. (Great service, thanks for everything) I will start the assembly tonight and try to put all the useful information I can, from what I have seen, I will not make any major changes / upgrades. Equipment: AXI 5325/24 GOLD LINE V2 SPIN 99 PRO OPTO 2 x Graupner Mini servo DES 658 BB, MG (Elevator) 2 x Futaba Servo S9550 Digital Low Profile (Aileron) 1 x Futaba Servo BLS 351 (Rudder) Jeti Receiver https://cimg7.ibsrv.net/gimg/www.rcu...5e0b77924b.jpg |
Engine Mount
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Hi
Do you have a difference of 100 grams on the wings ? Fred |
Originally Posted by Frédéric Garnier
(Post 12588588)
Hi
Do you have a difference of 100 grams on the wings ? Fred Yesterday, it seemed strange to me, too. But this morning I confirmed it and it's okay. Right Wing - 283g Left Wing - 286g //Luis https://cimg9.ibsrv.net/gimg/www.rcu...a0f301aeb9.jpg https://cimg0.ibsrv.net/gimg/www.rcu...5dd3863ee8.jpg |
I have to find shortest spacers. About 7mm to make sure there is not a big gap between the spinner back plate and the front of the cowl.
The wood ones supplied in the kit are not all the same size. For the Axi installation, the ideal size will be 13 or 14mm spacers. https://cimg1.ibsrv.net/gimg/www.rcu...bed349eb09.jpg https://cimg4.ibsrv.net/gimg/www.rcu...d38b01f8a1.jpg https://cimg9.ibsrv.net/gimg/www.rcu...60f7a6b2aa.jpg https://cimg2.ibsrv.net/gimg/www.rcu...ce25fe8707.jpg |
Do not tighten too tight, the aluminum piece will break. Probably that's the reason there's three in the kit.
https://cimg0.ibsrv.net/gimg/www.rcu...5724b5c671.jpg The fit of the Wheel Pants with the landing gear is excellent https://cimg2.ibsrv.net/gimg/www.rcu...ba769cee93.jpg Engine Mount with 2 x .5mm and 2 x .3mm Brass washers https://cimg1.ibsrv.net/gimg/www.rcu...4698fb84fd.jpg Rudder Servo Installation https://cimg5.ibsrv.net/gimg/www.rcu...32e3c53399.jpg |
it's starting to look like an airplane
https://cimg7.ibsrv.net/gimg/www.rcu...c329621e8e.jpg https://cimg2.ibsrv.net/gimg/www.rcu...6f1953684b.jpg |
I’ve never seen a rudder servo wheel like that used on a pull pull
How does it work and who makes it? |
Originally Posted by ltc
(Post 12589008)
I’ve never seen a rudder servo wheel like that used on a pull pull
How does it work and who makes it? The advantages of this type of installation are:
You can find it in here: https://www.probuild-uk.co.uk/index....roduct_id=4147 https://www.ebay.co.uk/c/1052995784 https://www.gravesrc.com/hangar-9-pu...air-large.html https://cimg2.ibsrv.net/gimg/www.rcu...989bd227f8.jpg https://cimg4.ibsrv.net/gimg/www.rcu...54bae68d97.jpg https://cimg2.ibsrv.net/gimg/www.rcu...1a96b6c849.jpg |
Hello lc
You must have the same wheel in the rudder (as shown on pictures) to get the advantages of this type of installation. https://cimg3.ibsrv.net/gimg/www.rcu...a1900e8748.jpg https://cimg4.ibsrv.net/gimg/www.rcu...6df59343cd.jpg |
In rudder assembly, I replaced the 1mm wire for 1.45mm, seemed to me it had less slack on the hinges.
If inecessary it's still possible to remove the Rudder. Also change the tail wheel. https://cimg8.ibsrv.net/gimg/www.rcu...45b3cc147d.jpg https://cimg9.ibsrv.net/gimg/www.rcu...c9794be7e7.jpg https://cimg3.ibsrv.net/gimg/www.rcu...71eeb4d88d.jpg https://cimg6.ibsrv.net/gimg/www.rcu...8772545faf.jpg https://cimg9.ibsrv.net/gimg/www.rcu...eca58d1206.jpg https://cimg1.ibsrv.net/gimg/www.rcu...48ffcbf6e0.jpg https://cimg2.ibsrv.net/gimg/www.rcu...2dd02cb630.jpg |
Does anyone know where is the model CG?
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Acuity CG
Originally Posted by lc_eiras
(Post 12589368)
Does anyone know where is the model CG?
For me this is where I liked the cg. About 9mm behind the cross former. Here is a picture of mine. Please note this is without the canopy on. Andrew https://cimg2.ibsrv.net/gimg/www.rcu...6234654e3.jpeg |
Originally Posted by flyboy91
(Post 12589372)
For me this is where I liked the cg. About 9mm behind the cross former. Here is a picture of mine.
Please note this is without the canopy on. Andrew |
I couldn't believe when I put the incident meter on the wings
Amazing how a plane with this kind of construction comes out of the box so straight. The fit is also perfect !!!!!! https://cimg7.ibsrv.net/gimg/www.rcu...d92cd84a0d.jpg https://cimg5.ibsrv.net/gimg/www.rcu...21fff7c6ae.jpg https://cimg4.ibsrv.net/gimg/www.rcu...4bb1b00ffc.jpg https://cimg3.ibsrv.net/gimg/www.rcu...0bd8e45c25.jpg |
We spent a lot of time to tell the factory how important weight was as well as incidence.
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Elevator halfs alignment:
This was a time-consuming but fundamental task to ensure a level flight and the correct entry into the manoeuvres. Since the stabilizers have no reference at the ends, a template similar to the one in the photograph should be provided to ensure its correct alignment. Something to consider as an update to the Kit !!!!!! :) https://cimg2.ibsrv.net/gimg/www.rcu...f06d4c5f58.jpg It should not be difficult to produce and the cost is insignificant verses the advantages it offers . It is true that the tuning of these elevators is only achieved after the trimming flights.But starting from a solid base guarantees better results. I have chosen to go this way: https://cimg9.ibsrv.net/gimg/www.rcu...c053e405ca.jpg https://cimg0.ibsrv.net/gimg/www.rcu...6cb3d7f7e1.jpg In the end I confirmed everything with the incident meter. |
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The canopy I received with the kit, besides looking excessively heavy compared to those I have seen online (about + 100 g) was broken and with some very bad fiberglass patches.
I added some reinforcements inside and I will send it to a painter to see if he can remove all the painting and improve the workand weight. Hopefully it won't be necessary to order a new one.... Mine (279) g: https://cimg5.ibsrv.net/gimg/www.rcu...d3cc55f624.jpg https://cimg3.ibsrv.net/gimg/www.rcu...cb70bf6f1a.jpg https://cimg3.ibsrv.net/gimg/www.rcu...3d31e0f467.jpg https://cimg7.ibsrv.net/gimg/www.rcu...2835ee3107.jpg https://cimg7.ibsrv.net/gimg/www.rcu...5017edd75e.jpg |
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