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Go Back   SailNet Community > General Interest Forums > Gear & Maintenance
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  #1  
Old 07-20-2008
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NavPod Installation Tips

Hi All,

It occurred to me, after seeing a guy at the boat yard destroy a $200.00 + NavPod, that some may benefit from my gained knowledge of how to handle drilling and mounting instruments to them.

Rule #1 - If they offer a pre-cut NavPod for your instrument BUY IT!!!!! DO NOT cheap out on this and try to cut it your self if it can be avoided!!



NavPods are made of a plastic and plastic is inherently finicky to drill and cut into especially when tolerances for instrument bezels need to be very precise. Here are some tips that will help..

#1 Print your template from the companies web site being sure to have your printer NOT using the "scale to fit paper setting"! If your template is too big bring it to Staples or Kinko's and have it photo copied onto heavy weight card stock. Always be sure measure the hole centers after you print out a template to double check the proper scaling and to ensure the proper template size.


#2 Use a heavy weight card stock for the template! I can not stress this enough it is very important that you use a heavy weight paper as it will not get twisted up in the drill, hole saw or jig saw.

Heavy Weight Card Stock Templates:



#3 Center, align and securely tape your template, after trimming to size, to the face of the NavPod.

#4 Use only BRAD POINT DRILLS!!! If you don't have them buy them! Many instruments such as some of the Garmin plotters require VERY, VERY precise holes. A drill that wanders even a 1/32nd or 1/64th of an inch can make a real mess and potentially ruin a $300.00 pod.

Brad Point Drill:


#5 Start the drill and the hole saw in REVERSE then switch to forward once through the surface skin and template.

Brad Point Drill Started in Forward:



Brad Point Drill Started in REVERSE (note the clean hole):



#6 When using a hole saw pre-drill the arbor hole using a 1/4" brad point drill first. This will ensure your hole is perfectly centered over the X on the template and that the instrument hole will line up with the mounting screw holes.Most all hole saw arbors use a 1/4" bit whether it's a Starrett or a Lennox but do confirm your hole saws arbor bit size first.


#7 When using a hole saw, like when mounting Raymarine ST-60 series instruments, start in reverse then switch to forward. This will give a nice clean entry with no chipping of the plastic.

#8 Use the absolute SLOWEST speed your tools will go and if the plastic begins to melt stop, let it cool and then start again. I used my air compressor to blow the chips away as I cut and to keep it cool. It took about 5 minutes to rig the set up so that it would automatically blow where I was cutting. If you have an air compressor this may be worth while. A simple 4" hole may take as long as 15 minutes to cut while trying to prevent melting of the plastic. Patience is a virtue!!

#9 When using a jig saw tape the entire face of the NavPod with blue tape to prevent marring of the surface. Also use a HIGH quality jig saw such as a Bosch. While I'm as big a fan of cheap tools as anyone this is NO PLACE for a cheap jig saw. I would NEVER even consider using my Ryobi (pictured on right) to perform this task as it is FAR from accurate!!

Bosch on Left Cheap Ryobi on Right:


Bosch non-mar plastic base on left Ryobi metal base on right:


#10 Use the right blades for your jig saw! I use these and they make beautiful clean cuts and don't even rip the paper template. If they can cut paper clean....


By using the right tool for the right job your finished result will work and perform as intended.. Both of these pods required custom cutting and mounting..
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Last edited by Maine Sail; 09-26-2008 at 02:44 PM.
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Old 07-20-2008
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Saw the same tip over on cruisers forum, I was going to ask the guy where he got the platform that his pods sit on from.

I'll ask you instead, cuz that other guy is obviously a poser
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I made it..

Quote:
Originally Posted by poopdeckpappy View Post
Saw the same tip over on cruisers forum, I was going to ask the guy where he got the platform that his pods sit on from.

I made that out of King Starboard. To do this I simply removed the compass, shifter plate and pedestal guard top plate. I then screwed the aluminum top pedestal guard top plate to a piece of Starboard using the existing mounting holes form the top plate. From there I drilled my two holes for the 1" pedestal guard tubes down through the aluminum top plate with a 1" Forstner bit so they were perfectly aligned with the original aluminum top plate. Next I used my router with a flush cut bearing guided bit to trace the big hole.

The final steps just involved shaping the new top plate to my preferences. I totally replaced the aluminum top plate with one made of Starboard. Unfortunately Starboard is not very rigid so I needed to support it and did so using dodger tubing and fittings..



Support strut attachment point (ignore my daughter):
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Last edited by Maine Sail; 07-20-2008 at 09:13 PM.
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Well, it looks great; thanks for the info
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Old 07-21-2008
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Thanks.. I needed to install my nav instrument this way because one of the newer off-set pedestal guards would have interfered with my end boom sheeting which I really like and want to keep.

I'm amazed that Edson has not stolen my idea as everyone that sees it wants one. In the early days of small wheels this instrument platform would have been in the way but with larger wheels it's no more in the way than the wheel.... I'm going on my second season with this design and have had zero issues with it..
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Quote:
Originally Posted by halekai36 View Post
I'm amazed that Edson has not stolen my idea ..
That's funny, before I asked the question, I look at Edson site and couldn't find it...... , I also looked at Navpod and nothing there either
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Great, thanks for the info and photo's. That was alot of work, thanks for shairing. Al
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OMG...is that a small scratch on the pedestal? Annnnd a unfinished beer?


Quote:
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Isn't it terrible how he'd slacking off...
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OMG...is that a small scratch on the pedestal? Annnnd a unfinished beer?
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