I have a similar issue. TV is a Yukon Denali, need to transport 4 bikes. Inside the truck isn't an option. I don't like the idea of bumper mounts.
A week ago I ordered one of these for transporting our generator.
https://www.campingworld.com/shoppin...-carrier/70918
Now we only really go one place where we dry camp along a river. Kids are so busy tubing down the river we don't need the bikes there. So my initial plan is generator on the shelf when dry camping at the river. They also make a storage system for bikes using a similar design, I will likely modify this one to do both (not at the same time). It is sitting in the box in my shop now and I haven't had time to look at it yet.
I may only transport two of the bikes that way though. I also started another project to transport bikes in the dinette. To do this you will need some fork mounts and reinforce the dinette bases. Mine were 1/8 plywood and recently I replaced those with 1/2". I just used the old ones as a pattern and cut new ones. That is already done. I just need to order up some of the fork mounts and put it together.
I will likely go with these
Fork Mounts. They are about $14 each at Amazon.
Here is a link to someone that did this same modification on another camper with lots of pics.
http://www.forestriverforums.com/for...els-44515.html
The nice thing about this is I access my storage by removing these bases to the dinette. When I don't need the bike rack when we get there, just flip the lid over and put the table and seats back.
I have been holding off right now because my kids have bikes without quick releases on the front wheels. My son is due for a new bike anyhow so I want to get that first so I know where to place the mounts. Or I have been thinking of just putting my bike and my wife's bike inside and using the modified A frame system mentioned first for the kid's bikes.
I did test fit my Canondale and my Wife's Specialized and it will work. I just have to mount the fork mounts so they bars are turned enough as I am concerned with them banging into the wall or window. I guess I could turn the bars as well. I also will likely run a strap through the back wheels so they don't bounce around.