Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 18-01-2017, 13:23   #1
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,002
Depth gauge, raymarine E70207 - 2 questions

I am looking at buying the raymarine E70207 depth gauge. I am slowly migrating to raymarine products. The transducers are plastic or bronze. I have a fiberglass sailboat.

1.) Recommendations on one over the other? Does the bronze need special antifoulant? I have a plastic one now.

2.) They come In a 12 and 20 degree tilt. How do you measure to determine which one?

Comments on the depth gauge are also welcome.

Thanks.
__________________

landonshaw is offline   Reply With Quote
Old 18-01-2017, 14:14   #2
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Plastic (nylon) transducers are generally fine for fiberglass boats. Bronze is a requirement for wood hulls.

Transducer element angle is a function of hull shape. How many degrees from horizontal is the hull at the mounting location? The xdr will tolerate some misalignment (beam width is typically 40deg) but a closer match is better and will result in less loss of signal underway.
__________________

boatbod is offline   Reply With Quote
Old 19-01-2017, 05:58   #3
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,002
Re: Depth gauge, raymarine E70207 - 2 questions

Thank you, I understand the concept. While the boat is in the water, what is the easiest way to measure this angle?

Aloisius
landonshaw is offline   Reply With Quote
Old 19-01-2017, 06:21   #4
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by landonshaw View Post
Thank you, I understand the concept. While the boat is in the water, what is the easiest way to measure this angle?

Aloisius
You can't with any degree of accuracy.

Perhaps you can estimate by using an inclinometer (angle gauge) inside the hull, but I've seen far too many boats with different inside and outside measurements caused by stringers etc.
boatbod is offline   Reply With Quote
Old 19-01-2017, 06:31   #5
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,002
Re: Depth gauge, raymarine E70207 - 2 questions

Thank you, I guess I will just swim under the boat and estimate how steep the incline is.
landonshaw is offline   Reply With Quote
Old 19-01-2017, 06:47   #6
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by landonshaw View Post
Thank you, I guess I will just swim under the boat and estimate how steep the incline is.
Well that's a possibility if you have a plastic inclinometer that doesn't mind getting wet.

Sailboat?
What kind of hull profile? (Full keel, modified fin, fin, canoe?)
Where are you mounting the txdr?

Typical cruising sail boats are 20deg or more, but it really depends on the hull and mounting position.
boatbod is offline   Reply With Quote
Old 19-01-2017, 07:43   #7
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,002
Re: Depth gauge, raymarine E70207 - 2 questions

We have a sailboat with a fin keel. The mounting will be just in front of the keel. Very similar if not the exactly the same as this picture.


Aloisius
landonshaw is offline   Reply With Quote
Old 19-01-2017, 08:45   #8
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Looks like 0 degree mount in front of keel in the "V". This is good for txdr performance, but beware you may need a long stem transducer because the hull will be considerably thicker here.

The only way to know for sure is to pull the old txdr and measure the stem.
boatbod is offline   Reply With Quote
Old 19-01-2017, 09:10   #9
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,002
Re: Depth gauge, raymarine E70207 - 2 questions

Yes, I am also going to do this in the water. The last one I put in I did that. I did have a professional diver with me. We got a cup of water in the boat...
landonshaw is offline   Reply With Quote
Old 19-01-2017, 09:36   #10
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by landonshaw View Post
Yes, I am also going to do this in the water. The last one I put in I did that. I did have a professional diver with me. We got a cup of water in the boat...
Now you got me. How you going to get sealant to cure leak free underwater? Good luck.
boatbod is offline   Reply With Quote
Old 20-01-2017, 10:33   #11
Registered User

Join Date: Jun 2007
Location: SW Florida
Boat: FP Belize, 43' - Dot Dun
Posts: 3,834
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by boatbod View Post
Now you got me. How you going to get sealant to cure leak free underwater? Good luck.
5200 cures underwater. As long as there are no large gaps that allow pressure to push it out, it works fine.
DotDun is offline   Reply With Quote
Old 20-01-2017, 11:13   #12
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by DotDun View Post
5200 cures underwater. As long as there are no large gaps that allow pressure to push it out, it works fine.
It's true that 5200 does cure with moisture, but you've got to get the parts assembled first, and there will be considerably hydrostatic pressure trying to force a pathway into the boat.

Not saying it can't work, but I certainly wouldn't try it on either my boat or any of my customers.

Please report back when you get it finished. I'm interested to hear how it works out.
boatbod is offline   Reply With Quote
Old 20-01-2017, 11:27   #13
Registered User

Join Date: Jun 2007
Location: SW Florida
Boat: FP Belize, 43' - Dot Dun
Posts: 3,834
Re: Depth gauge, raymarine E70207 - 2 questions

Quote:
Originally Posted by boatbod View Post
It's true that 5200 does cure with moisture, but you've got to get the parts assembled first, and there will be considerably hydrostatic pressure trying to force a pathway into the boat.

Not saying it can't work, but I certainly wouldn't try it on either my boat or any of my customers.

Please report back when you get it finished. I'm interested to hear how it works out.
I've seen it done.

1) Drill pilot (1/4") hole at location of transducer from inside the boat, leave drill bit in hole sticking out under hull (real short).
2) Dive and put sink plunger on hull over drill bit sticking out of the hull
3) From inside, use hole saw and drill final/bigger hole being careful to not dislodge sink plunger (diver ready to assist if necessary).
4) Apply liberal amount of 5200 on flange of thru-hull
5) Dive, remove sink plunger and immediate put thru-hull in-place while person inside boat puts rubber gasket and nut on thru-hull.

2 cups of water in boat at most!
DotDun is offline   Reply With Quote
Old 20-01-2017, 12:16   #14
Registered User

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,988
Re: Depth gauge, raymarine E70207 - 2 questions

We have the plastic one. It is fine. Grp boat. We have had it for about 15 years now.

You can measure the angle with a smartphone or else with a water level and a triangle.

b.
barnakiel is offline   Reply With Quote
Old 21-01-2017, 04:30   #15
Registered User

Join Date: Aug 2015
Posts: 459
Re: Depth gauge, raymarine E70207 - 2 questions

There's an implicit assumption here that the depth transducer element is removable from the housing. Most are not, which would mean you have to drag the wire underwater and feed it through the hole first.
__________________

boatbod is offline   Reply With Quote
Reply

Tags
depth, marine, raymarine

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Depth Gauge Gives Wrong Readings, Raymarine myocean Marine Electronics 5 19-07-2013 10:37
how do you compensate your depth gauge readings sdowney717 Marine Electronics 15 20-06-2012 16:30
Navman Depth Gauge problem landonshaw Construction, Maintenance & Refit 1 06-12-2011 13:16
Depth Gauge Problems Kittiff Meets & Greets 9 20-09-2011 11:34
Want To Buy: depth finder gauge crashkahuna Classifieds Archive 3 02-04-2011 06:21



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:03.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.