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  #11  
Old 12-02-2008, 06:04 AM
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Bubblehead Bubblehead is offline
 
Join Date: Jul 2007
Location: Keller, TX
Posts: 1,527
Default Dymo RhinoPro 5000

A year ago I bought a Dymo 5000. Very impressive for it's features, and it's available at this link for $87.

http://www.labelcity.com/eonline/itemdesc.asp?ic=15517

It's not very intuitive to use, but I made a couple of cheat sheets so even when I don't use it for a while I can get things done without having to figure it all out again.

The tape for shrink lables is expensive. The 1/4" size is $30 for 5' of label. The 1/2" is too big for most wires in an RV but fits over tab and ring connectors. The 1/4" is fine for our wires but doesn't fit over tab and ring connectors. The end result is unless you have wire without a connector on it you will have a hard time retrofitting these shrink labels.

There is also a heavy duty Nylon tape (not shrink-tube) which costs about $20 for 11'. Despite what the website says, it does not seem to stick really well, even on clean wires under the panel. I think the problem is the label is just a little too stiff to roll over the small wires in our planes.

On the plus side - the black on yellow is very visible and looks sharp but I'm not sure it's worth the price. I think knowing what I do now I would get some yellow paper and print a bunch of labels on the computer and laser printer, then use clear shrink wrap to attach the label to wires.

John
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  #12  
Old 10-02-2011, 01:59 PM
Joe Joe is offline
 
Join Date: Oct 2005
Location: Independence, OR
Posts: 324
Default Left Side Firewall Ground Block

I'm bumping this thread as I'm looking for a single, good location for the forest-of-tabs ground blocks, brass bolt, and engine-side firewall ground location and also for the engine monitoring wiring to feed through (for my Dynon SV-EMS-220).

Since most of my RV-8A's firewall aft-faces the forward baggage compartment or the rudder pedal area, I've decided my only option is on the lower left side of the firewall. That area is pretty busy with the fuel pump, heater valve, and aft battery cable and looks like it'll get even busier later with control cables and who-knows-what on the engine side.

Can anyone post a picture of their setup showing both sides of the firewall so I can de-conflict future problems? I like the look of Scott Chastain's photo in posting #3 except I want to utilize the lower left side. And I'd like to see if there will be any obstacles on the engine-side later.

Thanks,
Joe
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  #13  
Old 11-03-2011, 01:07 PM
Berchmans Berchmans is offline
 
Join Date: Nov 2009
Location: Anchorage, Alaska
Posts: 414
Default Grounding block

I have decided that I am going to fabricate a false floor in the bottom of the baggage compartment on the right side of the aircraft. My plan is to seat the false floor on the forward longeron and install a angle with matching slope on the inside wall of the baggage compartment. This will allow the forest of tabs to be mounted low on the firewall but take up a minimum of space in the compartment. The false floor will be removable and leave about 3 to 4 inches of space under it for the ground wires...any comments on this plan?
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  #14  
Old 11-03-2011, 02:08 PM
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lucaperazzolli lucaperazzolli is offline
 
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Location: Trento, northern Italy
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Default Ground Block

That's my option.

http://www.rv8.it/log/electrical_sys...ock/index.html
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  #15  
Old 11-04-2011, 10:32 AM
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Bubblehead Bubblehead is offline
 
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Default

Luke - That looks like a good place for it. It keeps the baggage well open and usable and it is not in the area where there are fuel lines. Four questions:

1) It is hard to see from the picture but it looks like there is a bolt that goes through the firewall to the engine side. Does the engine ground connect to that same bolt?

2) Do you have a firewall mounted battery or an aft battery?

3) Are you running a fat ground wire from the terminal block in the pictures to the battery?

4) Is there any possibility of contact with the rudder pedal? I would not want the rudder pedal to damage the ground wires going to the block.

John
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  #16  
Old 11-04-2011, 01:29 PM
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drill_and_buck drill_and_buck is offline
 
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Location: Bridgewater, MA - KPYM
Posts: 423
Default Left side of firewall works

Forest of tabs from B&C

Interior view


Firewall View

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  #17  
Old 11-07-2011, 02:38 AM
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lucaperazzolli lucaperazzolli is offline
 
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Location: Trento, northern Italy
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Default

John

1) It is hard to see from the picture but it looks like there is a bolt that goes through the firewall to the engine side. Does the engine ground connect to that same bolt?

2) Do you have a firewall mounted battery or an aft battery?

3) Are you running a fat ground wire from the terminal block in the pictures to the battery?


I've a firewall monted battery (Odissey PC680), the bolt shares ground battery cable, gnd engine case and the ground tab.

4) Is there any possibility of contact with the rudder pedal? I would not want the rudder pedal to damage the ground wires going to the block.

NO, there are not possibility of any contact !

Pics here :

http://www.rv8.it/log/chronological/eight/Pages/42.html

http://www.rv8.it/log/chronological/eight/Pages/58.html

John[/quote]
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  #18  
Old 04-04-2015, 08:54 PM
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Blain Blain is offline
 
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Location: El Dorado Hills, CA
Posts: 650
Default Another option

Sometimes I sacrifice function for the sake of organization. I isolated the mounting of a B&C block. Behind panel where it is needed. Preserving the baggage area for something important like a smoke oil tank....

Running #6 out to firewall mounted battery and airframe ground. I don't have a real grasp on the ground loop phenomenon but will only ground one end of wire shields.



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  #19  
Old 12-03-2017, 11:30 AM
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Nihon_Ni Nihon_Ni is offline
 
Join Date: Jun 2011
Location: Fredericksburg, VA
Posts: 254
Default Opinions Wanted

I'm in the initial stages of planning out my wire runs, and I'm looking for feedback on my proposed location of the forest of tabs grounding block. I don't want to give up the lower forward baggage space if I can help it, and I don't like the Van's proposed frame grounding bolt location due to potential interference with the rudders if I installed a FOT there. (I'm 6'2" with size 13 rudder pushers.)

What I'm thinking at the moment is to place the main FOT on the left side of the firewall between the throttle/prop/mixture cables and the fuel line. (48 tabs on the cabin side, 24 tabs on the engine side.) That will keep the wires away from my feet and preserve the baggage hold for baggage. I'm going to mount the battery on the firewall, so this will require a heavy grounding cable from the battery on the right side of the FW to the FOT on the left, but I think that's an acceptable solution given my other concerns.

I'm also considering adding an insulated avionics FOT (single sided, 24 tabs, similar to what Blain made in the previous post) and mounting it to the F-866A Bulkhead above the brake line F-866D Mounting Plate. (I'm planning a G-3X, GTN 650, G-5, GTR 20, GTX45R set up.)

I made cardboard FOT templates and taped them into position. In the first photo, the main is circled in blue and the avionics is circled in red.



Avionics FOT:


Main FOT, cabin side:


Main FOT, firewall side:



Do any of these planned locations interfere with other requirements or any other issues with mounting FOTs in these locations?

Thanks in advance,
Rob
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  #20  
Old 12-03-2017, 12:06 PM
rv8ch rv8ch is offline
 
Join Date: Feb 2005
Location: LSGG
Posts: 2,316
Default forest of tabs

Quote:
Originally Posted by Nihon_Ni View Post
...

What I'm thinking at the moment is to place the main FOT on the left side of the firewall between the throttle/prop/mixture cables and the fuel line. (48 tabs on the cabin side, 24 tabs on the engine side.) That will keep the wires away from my feet and preserve the baggage hold for baggage. I'm going to mount the battery on the firewall, so this will require a heavy grounding cable from the battery on the right side of the FW to the FOT on the left, but I think that's an acceptable solution given my other concerns.

I'm also considering adding an insulated avionics FOT (single sided, 24 tabs, similar to what Blain made in the previous post) and mounting it to the F-866A Bulkhead above the brake line F-866D Mounting Plate. (I'm planning a G-3X, GTN 650, G-5, GTR 20, GTX45R set up.)

...
The avionics ground is a good idea - I'm going to do it like the Aeroelectric connection recommends and use a DB-25 for that.

For the tabs, your location near the fuel pump seems like it will not be that easy to access once the F821PP is installed. Not impossible, but not easy.

My current (new) plan is to have a small FOT on the front of the FW, and have one behind the panel, with the ground wires running from the FW side FOT battery ground.

I'm trying to keep as much wiring away from the fuel pump area.
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Last edited by rv8ch : 12-03-2017 at 12:09 PM. Reason: typo
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