making a dirt bike hitch for your 4runner -build thread-

theizzardking

New member
so this week i'll be welding up a hitch for my dirtbike to carry it to remote places with out having to use a trailer. in this thread i will include materials needed, measurement and if i get a wild hair a pdf catia drawing of the design.
i will be using materials found in the scrap bin at work so there may be better methods, this will be the cheapest and easiest assy possible.
thanks guys for your help so far and look forward to contributing more in the future.

here is what i'm basing my design off of.
moto1c.jpg~original

moto1e.jpg~original

moto1g.jpg~original
 
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yeah sorry guys it's complete now and and i have drawings and everything for it, just got back froma 3500 mile road trip and got a bunch of cool things to post, az for this piece i need to get some photo's of the completed thing before
i update this, but it came out perfect, i could have refined it a bit more but all of the clearances and such are right on. will have this updated by the end of the week. for sure.
 
I was hoping if you could post up your pics of the final product it would be appriceated becasue i would like to build something similar for mine.
 
You can buy these for like $140 delivered off ebay....just saying....I had one for my 99 kdx220....it worked great, in fact, I think I sold it for the $140 I paid for it....

-Ian
 
You can buy these for like $140 delivered off ebay....just saying....I had one for my 99 kdx220....it worked great, in fact, I think I sold it for the $140 I paid for it....

-Ian

mine was free....$140 is almost new coils :thumb3:

some things you have to buy some thing yous can just build and save the cash, i look at it like this, you can either spend time or money , i don't have a lot of money and the 30 minutes it took to cut and weld it together was far cheaper to me then just working my job then paying for it, and it works just as well as the bought ones, just doesn't look as sexy, but then again when i'm taking my bike to go riding i'm not trying to look cool, i just want to go riding,
yeah long winded reply, just wanted to give some insight to why someone wouldn't just pony up the cash ;-)

to each their own.
 
well that why i wanna know how your build went becacue well im 17 so not much money coming my way and i have the material to make one so i thought this would be easier
 
well that why i wanna know how your build went becacue well im 17 so not much money coming my way and i have the material to make one so i thought this would be easier

You cant build it off the picture from the OP, Just try it yourself, it doesnt look that hard. All you need is a welder and a torch/metal cutter and a tape measure.
 
well that why i wanna know how your build went becacue well im 17 so not much money coming my way and i have the material to make one so i thought this would be easier

yeah sorry again been a big girl about this i'll get some pics tonight for you, in the mean time here's a rough idea of what it should look like

carrier.jpg~original


the box tube should be the same size as the ID of the receiver hitch i'm thinking 3 inches off the top of my head, drill 3 thru holes slightly larger diam. than your hitch pin, space evenly so you can adjust the depth/length of the
main support beam (think different length handle bars and whatever feels comfortable for you)

next get some C-channel slightly wider then the width of your tires and then cut to match the length of your bike or to match the width of your runner, your preference i went with the runner so i had room for larger bikes if needed.

next get out the oxy and paint marker, mark out the spots where your tires will sit and burn profiles out, these will allow the bike to sit in some grooves to secure it properly and also stop it from rolling back and forth too much. as well as lighten the weight of whole thing (more on this later)

next get some decent size angle cut (2) little pieces off and drill holes for
your strap hooks (i find a key hole profile works best) (circle with a triangle at the top) something like this but upside down
images


it allows you to get your strap through easy enough but also holds it quite well while your trying to cinch it down.

_______

weld it all down now, center the c-channel over the box tube, weld, weld tabs on, and you should be ready to rock, i painted mine with bright yellow rustolem so if i'm driving with no bike on there people will see it and not smash their ride up on it, mine could do SERIOUS damage to a honda, lol



also for a sweet easy ramp for it i just carry a short 3 foot long piece of wood with 2 bolts in it and drilled 2 more holes on either end for teh ramp to attach. like this on the carrier
rampslots.jpg~original


then when your ready to load your bike, pop the bolts attached to your little wood ramp through the carrier holes above and it makes it super steady and easy.

___________


ok back to the profiles and general rules of thumb,

1.MAKE SURE YOU USE THICK ENOUGH MATERIAL, disaster is abound if you don't

2.DEBURR THE PROFILES and BREAK ALL EDGES, saves your fingers,tires and a law suit when someone cuts them self on your hitch in a parkinglot,

3.i not responsible for anything that may happen from the use,building or function of this carrier (disclaimer disclaimer) ect ect, mine works fine if you do something stupid it's your fault.

4.the size and dimensions of the wheel profiles are crucial make sure the wheel sits far enough in the channel to be stable enough to support the bike with one hand. that way you are able to do the tie downs by yourself. other wise you may need some one to balance the bike for you while you strap it down, i need no help.

5. ONCE YOUR BIKE IS ON THE CARRIER PUT IT IN GEAR!! FOR SAFETY REASONS. (i have no end caps on either end of the channel so i can load from either side depending on the terrain, feel free to weld a end cap on the channel to prevent any rolling in the forward direction, also the profiles for the wheels should stop 90% of that if done correctly, i have about 500 miles of bike carrying on mine and have had zero spills or problems.

i also found some strips of rubber on the top and bottom of the box tube, reciver side, make it a almost perfect slip fit in the hitch, try it first without to be sure you need them.


with the pics and information above you can figure it out the rest of the way using only a tape measure (distance from handle bar to back window is the main concern) yourself, i will however post pics of mine tomorrow with the dimensions i used to help guide you, this is dyi and most likely will differ (size of bike handle bars ect ect ect) from yours, but mine should work for as is, i built it around my xr 400 but gave more room just incase i needed to carry something else.
 
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yeah i thought about the lighting problem, but after looking around and realizing i have a 3rd brake light and that every other carrier on the market lacks lights as well it shouldn't be a problem, my plan to include lights was going to be nothing more than a bolt on trailer light to the bike end of the box tube and wire it with a plug to the hitch. i agree that there should be a light but since no one who makes these does that i wasn't going to put the effort into it extras, just want to ride my bike and the 3rd brake light seems to be enough.
 

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