My new hitch mount bike rack & hitch extension - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-15-2011, 09:23 AM   #1
Ape
Jeeper
 
Ape's Avatar
 
Join Date: May 2009
Posts: 268
My new hitch mount bike rack & hitch extension

I've been a hardcore Yakima guy for several years but I was introduced to Küat (koo-wat) from a buddy in the bike biz. So I got the new NV and this is, by far, the most incredible rack I've owned. A bike mounts in less than 30 seconds.
However, I ran into the issue of the spare hitting the bikes when mounted. I emailed Küat and they introduced me to this company for an extension that actually bolts to your hitch... so the extension itself has no wobble, no play. Here is a link to this extension should you have the wobble problem on your hitch.
Heininger Holdings, LLC - Advantage SportsRack Extension 6000
Here's a few pics.


Ape is offline   Quote Quick Reply
Old 04-15-2011, 10:06 AM   #2
Jeeper
 
LC Yakr's Avatar
 
Join Date: Sep 2010
Location: Jamaica Beach, TX
Posts: 40
I have been thinking of purchasing the extension too...do you happen to have a pic of it with the bikes on it? I am curious as to how far out past the vehicle it is? Thanks...

LC Yakr is offline   Quote Quick Reply
Old 04-15-2011, 10:29 AM   #3
Electrical Guy

WF Supporting Member
 
deathphoenix99's Avatar
 
Join Date: Apr 2010
Location: Houston, TX
Posts: 2,619
You can buy the extensions at a lot of stores, harbor freight sells them for $21
.
12" Hitch Extender

I'd also like to see the bikes on the rack.
__________________
2011 RCLB Silverado, It's got the power I need.
Wiring Diagrams!
-Phil-

QUOTE:Bugsbb
"You're just about to get a bump and poke back.."
deathphoenix99 is offline   Quote Quick Reply
Old 04-15-2011, 10:54 AM   #4
Ape
Jeeper
 
Ape's Avatar
 
Join Date: May 2009
Posts: 268
You can buy tons of different hitch extenders... however, the one I describe above is not your normal extender... it is made specially for bike racks. The extender BOLTS to your hitch receiver and eliminates all play and looseness you get with a standard extender. Very important as it relates to bike racks.
LC, no pics with bikes on it, but here is the rack extended...
Ape is offline   Quote Quick Reply
Old 04-15-2011, 12:47 PM   #5
Jeeper
 
Join Date: Apr 2011
Posts: 24
Nice rig you have there.
With the bike on the NV rack, can you open the back window or the tail gate ?
Are those Rugged Ridge wheels you have ? Do you mind telling me what brand and size of tires they are ?
Thanks.
The C People is offline   Quote Quick Reply
Old 04-17-2011, 05:30 PM   #6
Ape
Jeeper
 
Ape's Avatar
 
Join Date: May 2009
Posts: 268
The NV does fold back and allows you to open the tailgate while bikes are mounted. However, it will not open fully, so access is limited.
Re: wheels and tires: wheels are 17" Pro Comps and the tires are BFG MT's 255/75/17... Same tire as an OEM Rubi.
Thanks for the compliments.
Ape is offline   Quote Quick Reply
Old 05-21-2011, 05:02 PM   #7
Newb
 
Join Date: May 2011
Location: League City, TX
Posts: 4
I have a Yakima double down and have been looking at this exact extender. Two questions: 1) It looks like from Amazon that you can adjust it from 8.5" to 11" since it has two holes to attach to the hitch (The Heininger 6000 11" extender anyway). Is this true and did you find you needed the full length? 2) The Yakima instructions say to not use extenders. I can only assume this has to do with wobble if you don't use an anti-wobble pin or ground clearance. Any ideas? Thanks for your post you almost exactly described my situation down to almost the same vehicle.
loosecannon is offline   Quote Quick Reply
Old 05-21-2011, 08:02 PM   #8
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,659
My Thule didn't require an extender and the bikes don't hit the spare. The thing is built like a brick sh1t house and it swings completely out of the way with the bikes on it. I purchased it when I had my Caravan and brought it over to the Rubicon when I got it. Had it for several years now and still happy with it. Posted in case someone looking at this thread is trying to make up their mind.
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 05-21-2011, 08:30 PM   #9
Jeeper
 
nvkid's Avatar
 
Join Date: Jan 2011
Location: n.nevada
Posts: 734
P.S. You can use the extender as a tire support. (cabela`s,northerntool) did i see 2 mirrors?
nvkid is offline   Quote Quick Reply
Old 05-21-2011, 08:41 PM   #10
Jeeper
 
Join Date: May 2011
Location: Wake Forest
Posts: 24
I just installed a Thule 971XT Helium 3-Bike Hitch Rack on my 2011 Jeep Rubicon. The hitch is awesome. Although I can install the hitch there is very little clearance between the bike rack and the spare. Again, it works but is tight. Not a problem unless you plan on upgrading tires to 35's (which I do very soon). In that case you would need an extender.

Note: tilting the bike rack does is pretty much worthless as you can't open the gate more than 2 inches.

Maybe the extender will help with that...

Just my 2 cents worth.
hbarkley is offline   Quote Quick Reply
Old 05-21-2011, 08:55 PM   #11
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,659
Mine is the swing away, not the tilt back. It operates easy and the tail gate opens completely. It handles 4 bikes. It was over $400.00. Well worth the price of admission. They still sell this type of bike rack. Price hasn't changed much.
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 05-21-2011, 09:00 PM   #12
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,659
It's this one. Notice the distance that the rack is from the receiver.
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 05-22-2011, 01:34 PM   #13
Newb
 
Join Date: May 2011
Location: League City, TX
Posts: 4
I took a look at the Thule pdf that shows all the dimensions. They had a 971 but not a 971XT. But all the XT's have 10 inches from the pin hole on the receiver to the swing arm. My receiver is flush with the bumper and I have a 10" spare so it actual turns out to be about 10.5 inches (since the spare sits in the bumper 2 inches and the receiver pin hole is 2.5" back from the bumper). The Tire sits about 5" above the receiver but I don't know the height of the swing arm to know for sure if it will fit. I am at a loss for how you all are fitting these on your wrangler. Does the receiver stick out from the bumper on yours? I have the stock 17" rim spare, nothing fancy.
loosecannon is offline   Quote Quick Reply
Old 05-22-2011, 02:47 PM   #14
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,659
All of my stuff is stock. Stock MT tire on a stock Rubi wheel. I don't know the exact model of Thule that I have but it fits without an extension. I would have purchased an extension if it hadn't. I'll go out and look on the unit for the model.
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 05-22-2011, 03:12 PM   #15
Jeeper
 
Join Date: Jul 2010
Location: Central FL
Posts: 181
I would not like to leave that extender bolted in the receiver like that. That would be a knee/shin buster.
banditman is offline   Quote Quick Reply
Old 05-23-2011, 08:07 AM   #16
Jeeper
 
Join Date: Jul 2010
Posts: 67
Quote:
Originally Posted by loosecannon View Post
I have a Yakima double down and have been looking at this exact extender. Two questions: 1) It looks like from Amazon that you can adjust it from 8.5" to 11" since it has two holes to attach to the hitch (The Heininger 6000 11" extender anyway). Is this true and did you find you needed the full length? 2) The Yakima instructions say to not use extenders. I can only assume this has to do with wobble if you don't use an anti-wobble pin or ground clearance. Any ideas? Thanks for your post you almost exactly described my situation down to almost the same vehicle.
I believe that the issue with extenders (from the rack manufacturer's point of view) is the additional load that is put on the hitch / bumper when you hang the weight further out. I'm rusty on my engineering formulas, but believe that the load increases linearly with the length of the lever. Heavy duty hitches and bumpers can probably handle it, but not all users have Jeeps and Class III hitches. Even though the bikes and rack might not approach your hitch's load limits, you also have to consider the dynamic / bouncing force from the bumps in the road (different than towing a trailer with the same tongue weight).

I have been using the Yakima Double Down 5 on my stock Sport and it does not hit the spare.
irideducs is offline   Quote Quick Reply
Old 05-23-2011, 08:47 AM   #17
Newb
 
Join Date: May 2011
Location: League City, TX
Posts: 4
Irideducs, I guess that does make sense. Since the hitch and extender is a level arm you have more torque the farther you go out. If I remember my physics it is the length of the level arm times the weight that determines the downward force. I really don't know what the class of my hitch is off hand. The dealer put it on after the fact since they couldn't get one with the factory hitch. It is a 2" Curt hitch attached to the stock bumper. I will have to look closely to see if it says somewhere. I am encourage by Ape's original post using the Heininger 6000 and I am only using 2 bikes on mine but they are mountain bikes.
loosecannon is offline   Quote Quick Reply
Old 05-23-2011, 12:09 PM   #18
Jeeper
 
Join Date: Jul 2010
Posts: 67
Quote:
Originally Posted by loosecannon View Post
Irideducs, I guess that does make sense. Since the hitch and extender is a level arm you have more torque the farther you go out. If I remember my physics it is the length of the level arm times the weight that determines the downward force. I really don't know what the class of my hitch is off hand. The dealer put it on after the fact since they couldn't get one with the factory hitch. It is a 2" Curt hitch attached to the stock bumper. I will have to look closely to see if it says somewhere. I am encourage by Ape's original post using the Heininger 6000 and I am only using 2 bikes on mine but they are mountain bikes.
I'm sure that you have a Class III like this one:

Curt Trailer Hitch for Jeep Wrangler Unlimited 2010 - 13432

Usually there is a sticker on the tongue with the load ratings -- 350 lbs of tongue weight (downward force on a tow ball) in this case. I have no idea how conservatively these things are rated, or whether the rating has more to do with the hitch welds or the bumper. However, adding an 11" in extension might come close to doubling the torque on the receiver / bumper -- so you really might have a 175lbs tongue weight load limit when the extension is in. Your two bikes and carrier are probably less than 75 lbs, so you are good before considering the stress of a bouncing / shock load. No clue how to calculate that, but I do know that running is much harder on your knees than walking.

I'm sure that you will be fine, but I wouldn't do it with my 5-bike load.
irideducs is offline   Quote Quick Reply
Old 05-23-2011, 06:01 PM   #19
Newb
 
Join Date: May 2011
Location: League City, TX
Posts: 4
I did confirm it is a Curt hitch since there is only one for the 2011 Wrangler:

Curt Trailer Hitch for Jeep Wrangler 2011 - 13432
http://www.curtmfg.com/index.cfm?event=hitch
Does Curt Class III Hitch Require Additional Parts For Hitch Mounted Bike Rack on 2010 Jeep Wrangler | etrailer.com

I did some back of the envelope math given a class 3 hitch with 350 lbs tongue weight and 3500 max trailer weight. Assuming a standard hitch length of 10 inches you have 350 lbs tonque weight and 3500 max trailer weight (just guessing here since tonque weight is 10% of trailer weight which puts the standard lever arm at 10 inches). The Yakima double down 4 is 36 inches long so worse case is 97 lbs at the very edge. The double down weighs 30 lbs so 67 max worse case. Of course this isn’t entirely true since the 30 lbs is only about 9 inches away and your bikes are spread out. With an 11 inch extender and my two bikes spread out with one closest and one furthest away we have 30lbs(11+9) + 26x + 48y < 3500 lbs. If I assume my bikes are the same weight (which they are not, mine is slightly heavier at around 30 lbs) then 74x < 2900 with x being 39 lbs worse case. So I should be good. I can always add bungie from the spare tire to the bikes for additional support.

So the conclusion is unless you are far out and have 4 or 5 bikes everything should be fine.

loosecannon is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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
Hitch Bike Rack cmeforsvc JK General Discussion Forum 16 12-11-2012 11:09 AM
AR: Saris Cycleon Pro bike rack with 2 bike extension and lights ncossey Classifieds Archive 0 11-02-2010 10:33 PM
4 bike, bike rack devildoc007 JK Pics Forum 9 09-07-2010 08:43 AM
Help on Bike Rack lemonth TJ General Discussion Forum 7 10-16-2009 09:30 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:05 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC