tucson

My Feedback: (1)

Hi Marty,
No problem. The picture in the manual shows the servo arms much further out then what we were getting with the arms that come with the servo. That threw me off.
I just did what you did and used the servo arms that came with the servo. It works okay but I have not set the throws yet. I think the mid rate will be fine for my style of flying.
I have found that the 5085 will not work space wise in the rudder hole. So I am doing what DrScoles did with his and glue it to a 1/8 plywood plate. I am undecided as to attach the plywood plate by using either Velcro or glue to the inside of the fin. Velcro sounds better if I have to remove the servo, but how well will it hold without coming loose?
If this fly's as well as my big one I will be a very happy camper.
Regards,
Stan

DrScoles

My Feedback: (18)

I am a big fan of zap a dap shoe goo stuff for mounting servos. Tiny bit of shock resistance and a royal pain to get off. I wouldn't use it on a big control surface, but on these little planes, perfect---and easy ;-)

tucson

My Feedback: (1)

I agree, At the moment I have Some clear RTV. Probably will work as well.

afterburner

My Feedback: (18)

I had some plastic servo L brackets that I screwed to a ply plate and glued the plate into the vertical stab. Four screws and the servo comes out with the brackets attached.

extra 300

My Feedback: (3)

Can i use a 2S Life battery (6.6.volts) redundant battery system to power Rx/servos and E-retract/brakes knowing that i am using a standard receiver working on 5/6 volts and stock servos?

Thanks in advance
Regards,

marcuspocus

I received my pipe from grumania today, and looking at it, the bellmouth is large...very large.

There is no way the bellmouth could go behind the wood former behind the turbine.

Is there a magic trick to get it in there and screw it to the tube in-place?


This is how Grumania show it installed :

http://www.grumania.com/xtcommerce/i...ages/699_2.jpg

RemoteJets

You have to take the bell mouth off, slide in the pipe, slide in the bell mouth, slide them over each other, and now the hardest part, install the screws again.

I made a small hole in the bottom of the fuselage where I can put the screwdriver in ans use nuts for fastening, this way you can install the pipe.
Also will made some brackets which will hold the pipe on the former.

Grt,
Berto.

marcuspocus

Ok, i can understand the hole in the bottom. In fact that's the only way I could've think of...

Thanks alot for confirmation.

But what about the brackets?

Do you have a picture? Would help alot, and be greatly appreciated...

Thanks in advance...

Marc

DrScoles

My Feedback: (18)

I cut my bell mouth down. It was a pain, but I was trying to get the turbine very far forward. I think I cut around 5/8" off of it.

marcuspocus

Could you post some pictures of your pipe installation?

Jeremy300

My Feedback: (6)

How to mount the pipe.

1. Outside of the airframe assemble and the bell and pipe. Drill 3 holes thru the bell and pipe at 120 degrees from each other.
2. Bolt the bellmouth to the pipe with the bolts on the inside and nuts on the outside of the pipe.
3. JB weld the nuts to the pipe. Do not get any glue on the threads. Let JB weld dry.
4. Disassemble the bell and pipe.
5. Glue a hardwood block to the bottom of the fuse so that the centre of the bell is located to the engine bearers. I don't remember the measurement I used.
6. Install the pipe and push back.
7. Install the bell mouth behind the former.
8. Drill a hole to mount the bell to the hardwood block with a screw.
9. Push the pipe forward and align the holes. Bolt the bell to the pipe using a drive bit twisting between your fingers.

marcuspocus

Thanks alot Jeremy!

You make it look easy with your 9 steps, but i guess it's not that easy ;-)

JD Weld nut on the outside, allowing bolt on the inside is genius!

Ok, got to find some JB Weld tommorow...

Thanks again

DrScoles

My Feedback: (18)

In order to get my turbine a little farther forward, I had to cut the bell mouth. This also necessitated a slightly longer pipe from grumania. I ordered the first one and found it too short. Which worked out great because it was the perfect fit for my JHH A-7 :-) If you look at this pic, you can see a metal strap going back on top of the turbine, the one with no bolt in it right now… LOL. I have one screw going into block in the fuse, throughout he bottom of the bell mouth, and one through the top of this strap. The sides of the bell mouth are tight up against the back of the rails, it doesn't move. Jeremy's ideas are good as well. I forgot how I got the bell mouth on the pipe, I think I used small sheet metal screws so I wouldn't need a bolt on the back side. I do remember it being a pain in the ass…. ;-)

These straps come in the grumania pipe kit.

Love flying this plane, actually like it better than the mid size Avanti. Can't wait for our weather to start clearing up!

RemoteJets

This way I have the pipe installed:





Grt,
Berto.

Midas D.

Looks really good!!

;-)

marcuspocus

Super nice install RemoteJets, the question is, how did you manage to put screw on?

I mean, bolting the bellmouth to the pipe?

BTW, I did found your photos on your facebook page :-)

marcuspocus

While looking for a nice diagram about fuel system plumbing, I found this page:

http://www.ultimate-jets.net/blogs/f...considerations

I tough it would surely be of interest for some :-)

Lengthy, but pretty much complete I think!

RemoteJets

Somewhat worser phone picture :-/


I slightly enlarged the holes in the pipe and the bell mouth so the M3 screws will slide in easy.
I made a small hole in the bottom for the hex key.
Now I slide in the pipe and the bell mouth and slide them together.

With some fiddling I install the screws which will go easily in the pipe/bell mouth and place a M3 lock nut, that 3 times.

Now I can hold the nut and screw the the hex bolt with the hex key through the hole.

When fastened I install the 2 screws of the holders to the airframe bracket.

And ready.



Hope you like it so far Edwin


Grt,
Berto.

Midas D.

What i said, nice :-)

marcuspocus

Excellent RemoteJets, thanks for all the explanation and pictures :-)

I think I have enough info to start turbine and pipe installation.

Last question (i think...), about wing fastening, i'll have to remove wings for transportation, every times.

Do you all think that the screw thread is going to last? Maybe someone has a better way?

Paul0088

I used an M3 T nut in the wing. 10mm M3 Cap head bolt

marcuspocus

Excellent :-)

That's it!

Thanks a lot Paul0088, I'll use your method for sure.

This thread is GREAT, found everything I needed and then some!

DrScoles

My Feedback: (18)

Nice idea.

DrV

My Feedback: (2)

Hi Guys,
Just got a K45 and waiting for the plane to arrive.

Is the stock hardware good enough or do I need to "upgrade"? I'll be ordering the spectrum 4030 servos.
Also if using 2s A123 (6.6VDC nominal) do I need a regulator for the electric retracts, gear door servo and the steering servo?

Thanks

marcuspocus

Retract controller doesn't work @ 6.6v here.

I tried with a Life 2S battery, and retracts didn't work.