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Old 03-26-2020, 03:11 PM   #1
LoLadTraveling
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2014 Montana 3150RL

As stated in the subject box, we have a 2014 Montana 3150RL left-handed trailer. We recently purchased 2 recumbent trikebikes along with an Alpaca bike rack to mount on the back of our trailer. I use 2 ratchet straps attached to the receiver to minimize side sway and for/aft movement. As youse know, there is a lot of "whipping" at the back of a fifth-wheel while driving. What I want to do is install 2 eye bolts to the side of the back window in line with the top. Then attach 2 ratchet straps to take some of the weight off the receiver, thus helping to minimize movement some more. Thanks for any help, Laddie


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Old 03-26-2020, 04:19 PM   #2
Mikendebbie
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Trying to understand what you want to do...below is a random pic I googled for the rear of a Montana. Is my sketch correctly showing what you want to do?
Hopefully others will chime in with ideas - but this sounds like a bad idea to me.
Your eyebolts would have to be anchored thru studs/structure, with big washers on the inside wall and the outer skin. It seems to me that you will be adding moment forces to the back wall that it was not designed to resist...not to mention inviting leaks and cracking the fiberglass cap. My knowledge of structural engineering and moments has just been exhausted! It just sounds like a bad idea to me - unless my sketch is wrong. Seems like you need to figure out a way to resist the rear end sway by bracing back to the frame (keep the bracing horizontal and low down at the frame level)
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Old 03-26-2020, 05:31 PM   #3
jsb5717
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I would certainly avoid the eye bolt idea...that's just begging for other problems. There are simple solutions for tightening the rack in the receiver. Use something like this and call it good. A little movement isn't going to hurt the bikes but screwing eye bolts into your trailer and putting tension on them just might be an expensive mistake.

Something like this:
https://www.amazon.com/Tightener-LIB...xpY2s9dHJ1ZQ==
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Old 03-27-2020, 11:16 AM   #4
LoLadTraveling
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Thanks much. I understand everything you are mentioning. Your sketch shows what I was planning on doing. The only difference is the style of my rack. The top of the rack almost reaches the middle of the rear window. Now I'm wondering what about putting the eye bolts more towards the bottom of the window. Laddie
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Old 03-27-2020, 11:22 AM   #5
Mikendebbie
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Quote:
Originally Posted by LoLadTraveling View Post
Now I'm wondering what about putting the eye bolts more towards the bottom of the window. Laddie
My comments would be much the same. I just don’t know if the rear wall and cap was design to resist/withstand an imposed tension load of any type.
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Old 03-27-2020, 11:23 AM   #6
LoLadTraveling
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I have a receiver lock already. What I'm trying to accomplish is to minimize the for & aft whipping of the bikes while traveling on our SMOOTH ROADS! Tried calling Keystone, but they're shut down until April 8.
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Old 03-27-2020, 11:38 AM   #7
lightsout
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Almost ALL bike racks have a disclosure not to use on back of trailer (for the reasons discussed above) with that said install a receiver on the front o f the truck and put the bikes or a roof rack if possible (assuming it does not block forward view).

by the way Keystone will not advise you on this as it would be a liability to them...
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Old 03-27-2020, 12:05 PM   #8
Donjamin
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Having opened up the rear cap on my 2016 3160 to install a backup camera and to rotate the 50 amp electrical connection to accept a dog-bone electrical cord connector, there is no wood backing in your fiberglass shell for your eye-bolt to go into next to either the windows either top or bottom. Your dealing with about a 1/4" to 3/8" inch thickness of fiberglass on the rear cap shell. As others have mentioned, You are just asking for trouble if you think you can secure an eye-bolt though the fiberglass. I'd look for an alternative such as the hitch clamp mentioned in a prior post. That's cheaper than having to do a fiberglass patch job on your rear cap. That's my 2 cent opinion.

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Old 03-27-2020, 04:23 PM   #9
Montana Man
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As long as there is no slop in the receiver and bike rack, it will be fine. Those bikes go through more riding them than a ride on the back of a trailer. I've had motorcycles on the back of my trailer and had no problems.
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