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Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:41 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		Hi everyone,
I posted this on another forum. Just like to share it here as well.

I've had the #36 bird a while now. And decided to Mod it to the MAX as I've got ample time (bored).

I found that this bird is great for modelling work as the plastic frame can easily be altered and improvements done everywhere.
If you've given up on the bird, maybe here you'll find some interest to do something about it.
If you've got one that you've also mod-ed beyond recognition, please put your great works here! I'm sure a lot of us are always looking for great new ideas.



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:44 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		Edit.

< Message edited by borneobear -- 7/27/2006 12:20 PM >

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:46 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		Edit.

< Message edited by borneobear -- 7/27/2006 12:21 PM >

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:49 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		These are the list of things I didn't like about the #36:

1) Crappy electronics (RTF Version)
2) Non adjustable tail boom
3) Too skittish (need to tame the beast)
4) Gear mashing between main gear and tail pully not good due to bendable plastic frame
5) Smaller main gear bearing compared to the T-Rex - won't last long.
6) Non adjustable fly bar weights
7) Smaller main gear compared to the T - Rex
8) Main gear one way bearing always slipping in the plastic main gear housing
9) Didn't like the small canopy
10) Didn't like the plastic tail unit
11) Everything else.

The only thing I liked about the #36 was the main gear shaft - much better than the shogun main gear shaft.

So with this list - I got busy!

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:56 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		First up on the list was the crappy walkera electronics. No work here, basically just buy and plonk it in:
1) Reciever : Futaba R145iP:

2) 3 units of GWS Naro+F H/BB servos:

3) Tail digital servo from Helidirect (HDS 577) (Helidirect.com)

4) I'm using the Futaba 9CHP radio:

5) 401 Futaba Gyro (worth it?)


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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 5:58 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		Oops, the receiver is Futaba R146ip, PCM 35MHZ.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:09 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		First off, I wanted to deal with the non adjustable tail boom. J-Ken tried to solve it this way:
http://www.rcgroups.com/forums/showthread.php?t=408112

I decided to try a simpler way, using tail servo holders (http://www.helidirect.com/product_i...roducts_id=1242). I just drilled two holes on the frame for the servo holder screws and CA-ed these great plastic clamps onto the frame:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:12 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		To further hold the tail boom in place, I replaced the small screws that hold the two sides of the frame together, made the hole bigger with a 2mm drill bit, and used these Hirobo link rods instead:



Like so:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:16 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		With this plastic clamp in place and using the hirobo rod / nut 'clamp', I could precisely control the placement of the tail boom.
I found this critical in my later mods.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:20 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		The #36 has this nasty problem of the tail drive pully eating up the pin that holds it to the shaft. This results in the shaft spinning as you trottle up, but the pully doesn't - causing your tail to go into a stupid uncontrolled anti-clockwise spin.
Here's a picture I gave to Chevron who had this persistant problem:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:22 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		This is how I initially solved the problem - Using the Trex / Align metal pully with grub nuts:



Some modifications were required to get it to fit in, but I didn't have those worn out pin housing issues anymore:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:27 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		After I saw the DF60 re-design by walkera, where the tail drive pully is placed directly onto the main gear, I decided to go with that set up.
The best value for money was to buy this Shogun kit, find xmseller (Jeff) (http://cgi.ebay.com/zoom-zap-shogun-400-CNC-6061-32-T-pully_W0QQitemZ6063234069QQihZ009QQcategoryZ2563QQtcZphotoQQcmdZViewItem).

Here was my first try at fitting this pully to the main shaft, with mostly stock parts:





This is what the original set up looks like (unimpressive.. )



< Message edited by borneobear -- 6/30/2006 4:26 AM >

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:35 AM   
borneobear


 

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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
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Here's what it looked like after installation:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:41 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		To guide the belt down the tail boom, I had to mod this shogun tail raiser, so that i could be fitted onto the #36 frame:



I cut it in half and just screwed it on:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 6:59 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		You can (just) see the guide works in this picture:




I later figured that the tail boom allum part was unnessesary - it added weight and locating the guied near(er) to the main drive pully caused some tension/ stress to the belt. I decided to use a simpler alluminum tube, long screw and CA (+ Nylon) to placed the guide more to the back:



This is a top view of the frame - you can see the holes where I originally placed the guides and the latest possition, much further to the back, towards the tail boom support:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:07 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		Obviously the stock belt would not fit into this new set up. The belt that came with the shogun conversion was not nearly long enough to do the job either.
I looked high and low for a belt of suitable lenght, and found Econobelt.com:
http://www.econobelt.com/Q460/RFQ/TBelt/02.htm
They advised me to get this belt from their stocks: QB-MXL01888-012. But at USD 25, including shipping, I thought it was a bit too steep.

So I decided to risk it and mod the belt itself. I bought a new Align belt and joined it with my old belt. By the way, the Align belts ROCK! They are shiney, smooth and silky - unlike the cheap looking walkera / shogun belt....
http://pinnaclemodel.com/index_eproduct_view.php?products_id=197

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:22 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		Here's how I joined the belts together (please remember that this is NOT A REPAIR JOB):
1) Using very sharp blade, cut (!!) the belts to be joined at an angled slant like this:


I found it best if I can get 11 of the belt 'bars' within the cut area - this will give the maximum surface area to glue.
In the above picture, I immobilize the belt using two fine saw blades (very straight!). This was part of the glue-ing preparation.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:26 AM   
borneobear


 

Posts: 481
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Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		2) Put the two belts together, so that they are joined / squized tight by the saw blade. Apply CA onto the joined area, like so (if you can put the glue first and the quickly join /squize the belts together, I think that would be best) :




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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:30 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		3) After the CA dries, file the excess CA away:


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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:32 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
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From: KLANGSelangor, MALAYSIA
Status: offline 		4) Flip the belt to the other side, squize it back in between the saw blades and apply CA here as well. File when dry:



The finished joined belt:



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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 7:36 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		This is the final product (approximately 8cm longer than stock). The outer circle is the lengthened belt, while the inner circle is the stock belt:



The exact belt extension should depend on your tail boom lenght. With the plastic clamp and frame grip (using hirobo rods) I could maximize my tail boom 'extension'.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 8:03 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		This was my set up after the tail boom /belt extension and new tail drive pully:



It flew with very much less vibration, less noise and better tail response. That iritating tail wag when using my Futaba 401 gyro is gone.

However (!!), I do make it a point to fly more carefully with this set up. Flying a joined belt on grass, or rocky areas would not be a good idea. I now fly only on cemented or asphalted grounds. I've had my tail get caught on small stones / earth after this mod with no ill effect (apart for the ugly looking tail blade), but it never hurts to be careful!

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 8:06 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		Will continue tomorrow. More (much more) to come.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 8:44 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		I never liked the stock plastic elevator crank set:



I found that they could flex when both eleron and elevator was applied at the same time. So I decided to install the metal shogun version. After buying it, to my horror it didn't fit at all!!

The crank set as it came (seller noted ):



I've had to grind away the middle part, fix a pin through the shaft and housing (using EDM Laser machine to make the 0.9 mm hole):





It fitted nicely after these kind-of 'major' mods.

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RE: Ultimate #36 Mod Thread (& Shogun Parts) - 6/8/2006 8:48 AM   
borneobear


 

Posts: 481
Score: 100
Joined: 6/8/2006
Last Login: 11/14/2012
From: KLANGSelangor, MALAYSIA
Status: offline 		I've had to (actually wanted to) add bearings to the frame (again) to support the new crank set. It was just a case of drilling the hole and pushing the bearings in. The bearings never came off during flights as the amount of movement involved is minimal.
Detail of the pushed in crank bearing:


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