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RE: ESM Mitsubishi J2M3 Raiden build - 1/24/2012 4:28 AM   
Sessholvlaru



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Status: offline 		I got the whole tail hinged up. Everything lined up fairly decently. One elevator and the rudder had a very slight warp, so I had to split the difference to get them even. I used the included CyA hinges on the elevators.

Getting the elevator joiner into the fuse was fun. It was sort of like one of those bent nail puzzles, but I eventually found an angle to get it in there. For whatever reason the open areas in the fuse for that joiner are pre-cut but not for the rudder. However, this is nothing my Dremel can't handle.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/24/2012 4:47 AM   
Sessholvlaru



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Status: offline 		Here is the spinner again. I drew a light line where the real one has a joint and then took my Xacto to it and started chipping paint off of it based on an image of a Raiden. Once I was happy I dullcoated it and, I must say, it looks awesome. Best part is I can always take more off, I just don't want to get carried away. I also masked the cowl off and painted the interior with flat black. Once that dries the front end is basically buttoned up.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 2:47 AM   
Sessholvlaru



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Status: offline 		Got everything up front plumbed. I found these cool rubber grommets of assorted sizes at my local Sears to keep the fiberglass from cutting into my lines.

I sadly realized that my Bennett muffler will not fit in the cowl. Maybe this is why Idigbo is using the stock Zenoah muffler, which everyone tells me is a restrictive POS. So....I ordered a stock muffler since I am not willing to hog out a huge rectangle so my current muffler can hang out of the cowl. Looks like Idigbo's Raiden is plenty fast with the stock muffler.

I can't believe there is so little interest in this thread! Whine!

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 4:08 AM   
Warbird Nut


 

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Status: offline 		I'm interested. I have a smaller Raiden, the 40 size Hirobo. Even at this size it flies great, fiberglassed and painted.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 6:46 AM   
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Status: offline 		looks good in the air

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 9:23 AM   
Idigbo



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Status: offline 		The current stock Zenoah muffler is great. It has a large volume, two baffled pipe outlets and doesn't seem restrictive at all. As far as I know, in the last ten or more years there has only been two styles of standard exhaust for the Z62. The first was small with a louvred outlet and just two bolt fixings. This was a bit nasty in the noise department and certainly robbed a bit of power. The second though is much larger in volume, two outlet pipes and a three bolt fixing. In my opinion this one is perfectly acceptable in terms of noise and power. Both were satin black finish.

Ian.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 3:03 PM   
Sessholvlaru



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quote:

ORIGINAL: Idigbo

The current stock Zenoah muffler is great. It has a large volume, two baffled pipe outlets and doesn't seem restrictive at all. As far as I know, in the last ten or more years there has only been two styles of standard exhaust for the Z62. The first was small with a louvred outlet and just two bolt fixings. This was a bit nasty in the noise department and certainly robbed a bit of power. The second though is much larger in volume, two outlet pipes and a three bolt fixing. In my opinion this one is perfectly acceptable in terms of noise and power. Both were satin black finish.

Ian.


Interesting. Everyone else says to throw the stock two outlet muffler away and get a Bennett or pitts style muffler. There are several threads here where testing shows a 500+ rpm loss with the stock muffler. Either way, if it fits in my cowl I'm using it.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 6:06 PM   
Lifer


 

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Status: online 		I have the stock muffler in a 97 inch Gee Bee Y. Very quiet, and takes up a lot of room in the cowl.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 11:00 PM   
Sessholvlaru



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Status: offline 		Got my retracts today. These are the ESM electric ones. Aesthetically they are very nice and super beefy. Because these are the Gen 1 retracts I knew they would be ultra slow, which they are. 46 seconds from fully up to fully down. However, I already have the upgrade board on order which speeds them up to a scale 10 to 12 seconds.

The full-size Raiden's gear was painted the same color as the underside of the plane, so I did the same with my matching latex. I disassembled the gear and purposely did no other prep work other than cleaning the pieces with rubbing alcohol. This has the dual benefit of me being able to easily bring the gear back to natural aluminum and will also allow the paint to chip easily. If it is one thing I have seen, even with show winning scale planes, is that guys seem to never weather the gear.

Here is what the gear are looking like. The close-up shows the "weathering" achieved by just me putting the gear back together. Note that the full size Raiden's scissors faced toward the gear door. I'm not sure how I can pull that off since the ESM scissors are larger than scale. Either way they look cool!

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RE: ESM Mitsubishi J2M3 Raiden build - 1/25/2012 11:10 PM   
Idigbo



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Status: offline 		The gear look great painted. I thought about rotating the scissors as much as I could so they looked a bit more like, though I left them straight I may alter later. Are you doing the multi piece gear doors??

Ian.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 12:13 AM   
Sessholvlaru



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quote:

ORIGINAL: Idigbo

The gear look great painted. I thought about rotating the scissors as much as I could so they looked a bit more like, though I left them straight I may alter later. Are you doing the multi piece gear doors??

Ian.


Thank you. And yes, I will be doing sequential gear doors.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 4:34 AM   
Sessholvlaru



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Status: offline 		Ok, some minor griping here. For one, one of my main retract mounting blocks is not quite at the angle it needs to be. When retracted, one wheel sits about 3/4 inch deeper in the wing than the other. I will need to do some minor carving to increase the angle of the gear block so the one leg retracts further into the wing. Otherwise the gear fit great and I appreciate ESM laminating some G-10 phenolic in the ply there.

Secondly, and much more frustrating is the tail retract setup. I'm not sure what ESM was going for here. The tail retract is servo driven and comes mounted to a plywood bulkhead/servo tray (I used a mini instead of the full-size the tray is cut for). The manual seems to indicate that you just glue it in; boy that ain't the case. The bulkhead in the tail that the retract assembly glues to needs to have some substantial cutting done and getting in there is not easy. Also, if you glue the retract in as expected it hangs out way too much and won't retract all the way into the fuse (the Raiden's tailwheel retracted completely into the fuse) so you need to notch out the upper corners to that it sits higher in the fuse. Also my rearmost bulkhead is not glued in straight so I needed to shim the tail retract.

Gripes aside, the necessary modifications only took around 30 minutes and we have a functioning tail retract. You just need to be sure everything is 100% with the retract before you glue since you have no access to the servo once you do.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 5:40 AM   
Sessholvlaru



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Status: offline 		I epoxied the tailwheel assembly in there. I had to shim one side about 1/4 inch due to the crooked bulkhead. Here is a video of it in action. The servo was slowed down with my X9503.



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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 6:10 AM   
Sessholvlaru



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Status: offline 		I squared up the mains. The port retract needed 6 #7 washers (3 under each outermost screw hole) to match the starboard, so it was about a fat 1/8-inch off. Here is a video of the painfully slow Gen 1 retracts. I already have the upgrade board on order from TBM, but I wanted the retracts now so I could at least fit them. Other than the slow speed they work great.



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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 8:56 AM   
fockewulf37


 

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Status: offline 		If you are worried about access to the Tail retract servo you could always mount it up front and use a stiff control rod to operate it. I use to do that all the time with the robart tail retracts. That kept the weight up front...

Ty

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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 9:29 AM   
Idigbo



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Status: offline 		Your tailwheel is the same as mine, although mine is air with a cylinder on the frame where your servo is. I couldn't live with having it all glued in place permanently, but had to glue the wooden former, and therefore the air cylinder too. The retract though is removable, four screws and a clevis. I also altered the leg of my unit, making it much shorter. It seems this retract is perhaps the same unit as the Corsair. Mine has worked great from day one though and hasn't been taken out from the day it went in. Heres a pic of my shortened unit.

Ian.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/26/2012 10:38 PM   
Sessholvlaru



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Status: offline 		Yeah I was planning on shortening my tailwheel leg as well. It also needs to be angled back a bit, pretty much the half-retracted point of the ESM gear. It looks like the full-scale had some sort of rubber boot around the tail retract with the door upfront.

On another note I don't know whether I want that $109 4-blade Biela prop. I mocked it up and it does look sorta small (20x10) and I'm not sure how much a G62 would like it. Anyone actually run one?

So I decided that for now I would dress up my Xoar 22x10 prop. I rounded off the tips and painted it and the stripes and rectangles near the blade root. Silver marker was used for the chipped look and then I dullcoated it. I'm pretty psyched about how it came out. It's not a scale static prop, but it looks way better than plain wood.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/27/2012 12:24 AM   
Idigbo



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Status: offline 		That prop looks great. My tailwheel retracts too far as standard too, I fitted a crossbar infront of the retracted wheel to restrict movement and also it centres the wheel when retracted. You can see it in the pic below, under (or above!!) the tailwheel.
What I meant by multi piece doors was the ones on the main leg. Each door is three piece, the bottom piece attached to the bottom of the oleo and moves up and down with the suspension. The middle one attached to the upper part of the leg and the top one attached to the skin and is pushed open by the detracting leg. I'll be doing the doors like that since fitting one piece doors may mean they groundstrike as the oleo compresses with inevitable results.

Ian.



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RE: ESM Mitsubishi J2M3 Raiden build - 1/27/2012 12:47 AM   
Sessholvlaru



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Status: offline 		Here is mine fully extended and another much closer to the scale position. I might also add a cross bar since it can't lock in this position...that or modify the linkages.

An added bonus to the scale position is that none of the retract assembly will extend out of the removable hatch.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/27/2012 5:03 AM   
Sessholvlaru



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Status: offline 		Ok I fixed the tail retract. All I did was move the pivot point on the one scissor arm (red arrow) up 1/4 inch (blue arrow). I needed to reshape the arm a little as well so that the shock would pivot freely. Now it's just about right.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/27/2012 8:38 PM   
Sessholvlaru



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Status: offline 		Well my used Ralph Cunningham G62EI runs. That's good. I got my stock Zenoah muffler and threw that on it. It clears the cowl. Barely.



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RE: ESM Mitsubishi J2M3 Raiden build - 1/28/2012 3:42 AM   
n8622t


 

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quote:

ORIGINAL: Sessholvlaru

Yeah I was planning on shortening my tailwheel leg as well. It also needs to be angled back a bit, pretty much the half-retracted point of the ESM gear. It looks like the full-scale had some sort of rubber boot around the tail retract with the door upfront.

On another note I don't know whether I want that $109 4-blade Biela prop. I mocked it up and it does look sorta small (20x10) and I'm not sure how much a G62 would like it. Anyone actually run one?

So I decided that for now I would dress up my Xoar 22x10 prop. I rounded off the tips and painted it and the stripes and rectangles near the blade root. Silver marker was used for the chipped look and then I dullcoated it. I'm pretty psyched about how it came out. It's not a scale static prop, but it looks way better than plain wood.

here is a 22x10 but will go on a DA85...G62 might have a hard time with this prop. Sess you are moving along at mach speed with this build...it looks great

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RE: ESM Mitsubishi J2M3 Raiden build - 1/28/2012 3:44 AM   
n8622t


 

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Status: offline 		Nice to have a cowl that will fit a stock muffler...that saves about $100 Sess, where did you get your spinner???? Is it an ESM??


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RE: ESM Mitsubishi J2M3 Raiden build - 1/28/2012 5:38 AM   
Sessholvlaru



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quote:

ORIGINAL: n8622t

Nice to have a cowl that will fit a stock muffler...that saves about $100 Sess, where did you get your spinner???? Is it an ESM??


Yeah my G62 came with a nice Bennett side dumper, but keeping it would have meant a huge rectangular hole in the side of the cowl. The $13 stock job fits like it was custom made for this plane. There is still some finish sanding and grinding, but here are where my stacks exit.

And yes, it is the ESM spinner. If you look back a couple pages you will see that I had to reshape it a bit to make it right.

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RE: ESM Mitsubishi J2M3 Raiden build - 1/28/2012 5:39 AM   
Sessholvlaru



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Status: offline 		I have finally gotten close to done with the tail retract door. Trying to get the geometry correct so that the door closes flush when the tailwheel is fully retracted was a pain, but I got it mocked up and working good. Now just to make the fixtures permanent. The real Raiden had a tiny tailwheel so I swapped out the stock one for a much smaller one.

The exact shape of the tailwheel door(s) vary from picture to picture so I am just looking for something close.

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