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Rear Camera Replacement - 1999 U270

By Don and Tys 1999 U270 36'

Finally got the switch wired in to provide tilting the HD Back up camera. The project is far from over, because I still have to seal the area up and finish putting everything back together. Below is a little video on of the power tilt mechanism which I thought some might enjoy. I am using a linear actuator that I got from a guy in China that has a 2 inch stroke which seems to work just about perfect for this application.

I made a piece of linkage on which I can adjust the angle and therefore adjust the actual stroke length of the camera movement. I am using a power window momentary rocker switch which reverses polarity to the linear actuator motor and therefore allows it to stop in any position. The actuator has a limit switch which stops at the end of each stroke and turns it off but you can stop at any place in between with the momentary switch.

"Wholesale CCTV Security Camera" which currently sells for $239.85. The price seems to fluctuate a bit on the site... I think it was a little less when I bought it a few months back. This outfit seems very good to deal with providing great tracking & quick shipping. Initially I tried another outfit whose website doesn't even exist anymore, and they never sent the camera. Fortunately PayPal gave me a refund though it took a week or two.

The next link is the outfit which I bought the actuator from, also from China. You can find retailers on the Internet selling these in the states, although the price is a bit higher (and most if not all are still made in China). There was a hold up on the shipping from this guy as the container was seized in customs because of contraband that was also in the shipping container. Even so, it only took about 2 1/2 weeks to get here from the time I ordered it. This guy did respond to my queries and provided tracking information although it took a few tries to get the right number. 50mm (2 inch) stroke Mini Linear Actuator RYLA04A Linear Actuator

The last link is the switch that I finally ended up using from Amazon. I actually purchased a few others on eBay but I didn't like the form factor or action of the momentary mechanism. This one seems perfect… Only downside is that it doesn't fit the knockouts for the other switches and I had to fabricate a plate to mount it in. I made the plate from an old miscellaneous piece of door lockset striker plate. In the picture of the switch you can see the retarder Joystick next to it. I also made a mounting plate of similar stock for it because I didn't like the wobbly mount of the original installation. Power Window Rocker Switch 5 Wire Motor Reversing Control

I've taken some pictures which show the camera mounting a little more clearly. Realize that some of this is still provisional and as I finish the project I will likely make some changes.

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Due to the size of the camera, I had to make quite a few adjustments to the opening where you access the camera from the bedroom. Of course I want the bedroom to be sealed from the outside elements, and it seemed like a good idea to keep the space directly behind the intake plenum sealed off from the bedroom and from the outside as well. It was a tricky project because of the curved shape of the wall behind the camera and because of having to work inside the bedroom cabinet while kneeling on the bed. Sort of like building a ship in a bottle.

While I was at it, I refined the tilt mechanism mount so that could be sealed. The trim is all solid oak, not for looks so much as the fact that oak holds screws so much better than softwood. The hatch cover is made out of one quarter inch oak plywood laminated to the same fiberglass reinforced plastic (FRP) material I used on the underside of the coach. The sides and top of the enclosure are made out of Starboard (think plastic cutting board). The only thing that isn't shown here is the three-quarter inch foil faced polyurethane foam insulation under the cover. There is a void behind the back wall of the bedroom which is mostly filled with expanded foam insulation. This insulation extends up to about the bottom of the cabinet over the bed. This void is used for cable runs and is sealed from the camera opening, as well as from the inside of the coach.
More to come...

 

This camera features a native 1080P resolution, power zoom and one touch autofocus, 50 IR LED's for night vision, On Screen menu system for set-up, IP66 waterproof. These are all nice features, the only downside is that the camera is much larger than the stock cameras and so the mounting is a bit problematic, but I think I solved the issues well enough using stuff laying around. I have jury rigged a deflector/shade made made out of some roofing drip cap (this was a 2' piece that I cut off the trim for the bottom skin at the front bulkhead joint). What I would like to do eventually is have extreme fabricate a deflector out of fiberglass molded right into the rear cap.

 

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

There is a picture of the power tilt switch, and some shots that show the screen with the camera zoomed out in various degrees of tilt. As I mentioned to John and my previous post, you can see to within a little less than 3 feet of the back of the coach although it's a bit difficult to tell right now because of the slope behind where the coach is parked (it drops off close to 3 feet in 20'). In the photo with the camera set at the widest zoom and tilted down as far as it will go, you can see a portion of the ladder to the right (which is of course actually on the curb side). Of course the camera set for mirroring.

Backup Camera replacement

Backup Camera replacement

Backup Camera replacement

© Barry Brideau 2003-2017