extending an NRS frame - Mountain Buzz
 



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Old 05-07-2012   #1
 
Missoula, Montana
Paddling Since: 2009
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extending an NRS frame

I have a 66" by 88" NRS cat frame and I'd like to add a gear module off the back for longer trips. This would be for a drop-bag or a cooler (suspended). I've seen some nice self-contained gear modules for sale, but they're expensive and heavy, so what I'd like to do is buy/make some plug-in extensions for my top rails and throw another cross-bar off the back. Alternatively, I could get someone to bend a single piece of tubing into U-shape. Has anybody done anything like this?

I have seen that NRS makes break-down frame rails, but when I called they didn't sound too stoked on selling me just the 18" pieces I need. The NRS frame tubes have an inside diameter of 1.35" - is there a source to get thick-wall aluminum (I guess steel would be fine too) with this size OD?

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Old 05-07-2012   #2
 
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Kalispell, Montana
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1" electrical conduit (EMT) has an actual OD of 1.32". It would fit great inside the NRS tube, and could be easily bent.

I have a buddy bending up some conduit to make river table frames. I could have him bend a U for you.

The galvanizing on the conduit can make black marks on your tubes (about the same as the zinc-plating on the NRS ubolts), but you can paint/clearcoat the conduit.
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Old 05-07-2012   #3
 
Jenks, Oklahoma
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call back NRS and ask for Clyde

Some years ago I extended my NRS cat frame and he sold me a kit, which is solid aluminum plugs drilled for the thru bolts.

It was / still bomber and I did it for the same reason you posted, just to extend my rear compartment for dry bags.

they also sell tubing by the foot, you can either power hacksaw it (I am not good enough to get a perfect cut with a handheld hacksaw) or buy one of the big tube cutters )makes a perfect cut).
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Old 05-07-2012   #4
 
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at my house, Montana
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Just buy some speedrail fittings and NRS pipe. Make a rectangle (trailer module/frame) and strap it down. Use drop bag or straps to hang stuff off. The pipe is easy to cut and with speedrail you don't need a drillpress to connect with the LoPro's, just slip the SR on and screw them down.

speedrail comes in two sizes if you end up with pipe other than NRS. Downriver Equipment is a good source for a small order like that.
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Old 05-07-2012   #5
 
Helena, Montana
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NRS will make/cut/bend anything you want. You just have to know exactly what you want.

I have a similar frame & a similar problem. My solution is pretty close to laura's suggestions. Two straight bars w/lowpros (they will drill & attach for you) and a single rear cross bar attached w/the cheaper & lighter speed rail. This will allow easy on/off and allow me to angle it ypu compensate for the rocker on my tubes. Only going to need it a couple times a year when i want a small light boat for a 3-5 day trip so i don't want to spend a ton. This will be <$100. Worth it to me.
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Old 05-07-2012   #6
 
Lemooreq, California
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I have seen that NRS makes break-down frame rails, but when I called they didn't sound too stoked on selling me just the 18" pieces I need. The NRS frame tubes have an inside diameter of 1.35" - is there a source to get thick-wall aluminum (I guess steel would be fine too) with this size OD?[/QUOTE]

1" schedule 40 aluminium pipe will fit inside your NRS pipe. Get an 8" piece, insert 4" into existing NRS frame, drill thru both and secure with Clip. Do the same for your extension. Or use the speedrail, Kee Klamp quickrail or other fittings available.
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Old 05-07-2012   #7
 
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Fresno, California
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Quote:
Originally Posted by lhowemt View Post
Just buy some speedrail fittings and NRS pipe. Make a rectangle (trailer module/frame) and strap it down. Use drop bag or straps to hang stuff off. The pipe is easy to cut and with speedrail you don't need a drillpress to connect with the LoPro's, just slip the SR on and screw them down.

speedrail comes in two sizes if you end up with pipe other than NRS. Downriver Equipment is a good source for a small order like that.
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Incredibly simple, inexpensive, strong.
Why consider anything else?
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Old 05-08-2012   #8
 
Missoula, Montana
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Thanks for all the great advice! Gonna go with extending my top rails using plugs of some sort. I like this over making a square because it should be lighter and more rigid, plus I'm not worried about rocker (14' river cat tubes). Anybody know of a place in Missoula that sells speedrail fittings?
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