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Convert the TI cradles into a Dolly cart.
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Author:  stringy [ Mon Nov 28, 2011 1:21 am ]
Post subject:  Convert the TI cradles into a Dolly cart.

Thanks to sunEsailor and mkrawats for this idea! 8)

By adding some eyebolts to the Rhino HD roofrack bar it’s easy to convert it to a cradle type dolly cart. This was done using standard Rhino accessories and 30cm beach wheels I had on an underhull cart. I had all the bits on hand except the 16mm stainless axle. It's probably not worth it if you have to buy all the bits extra. It would be better to just get the Hobie cart. As I had the main parts already it only cost me about $20. The Hobie cart is about $550 downunder.

My existing trailer setup.

Add a couple of wheels and 16mm ss axles. The HD wheels also fit by using a spacer.
Quick release clips make fitting easy.



A boathook through another eyebolt (with a slot cut) makes the handle



Makes retrieving the TI much easier.
I still prefer the scupper cart for launching though! :)

Author:  mickeymouse [ Mon Nov 28, 2011 2:28 am ]
Post subject:  Re: Convert the TI cradles into a cart.


Very innovative as usual 8)
Do you prefer to launch with the scupper cart because you can stow it onboard and take it with you?
The Hobie dolly cart looks like it is intended to make launching and retrieving easier but must be left securely back at the launch site :roll:
I would be interested in your thoughts re this matter.

Cheers :wink:

Author:  stringy [ Mon Nov 28, 2011 3:40 am ]
Post subject:  Re: Convert the TI cradles into a cart.

Thanks for that Mickey. :)
I really like the simplicity of the scupper cart and prefer my modded Trax2 with the 4 wheels I’ve previously posted about. On my trailer I carry the TI above the AI so it's easy to insert the scupper cart and hold it in place with the cart keeper for removing it from the trailer.
The big disadvantage with it is
-getting it back in
- possible scupper damage (but by being careful you can avoid that with the use of balls, slings or contoured foam)

You've mentioned one negative with the dolly cart -you can't take it with you. A couple of other negatives:
-it's very wide. It wouldn't have fitted down the beach access track where we stayed last Christmas.
-it needs to be used with straps (like any under hull cart)
-it is very low to the ground and the hull/ama can drag
-it’s long and bulky
-it’s expensive.
…..but it does make it easy to retrieve the TI and that’s where I’ll be using it most. :wink:

Author:  sun E sailor [ Wed Nov 30, 2011 3:28 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Hello Stringy,

I like it, good job :!:

You've come up with a very innovative modification to my original Appel Cart design; removable wheels... Very clever.

At one time I thought about something like this, but could not find the necessary plastic fittings to make it like I wanted to. I was thinking about having an axle stub that would pop in and out of the end of the frame. The wheels would still be removable but then the axles would not be sticking out when not in use.

I'm sure you love using your new cart, so much easier on the ole back huh. :wink: I realize you're using "spare parts" to save money but how are those 30cm wheels holding up for you, have you tried rolling on soft sand yet?

Just a thought... I put my cart way back towards the stern when I take my boat on and off the trailer. It acts as a temporary dollie at this point, keeping the stern off the ground until the boat is somewhat level. As the boat comes down, I slowly pull the cart forward towards the middle where it then balances out.

The 42cm I use are slightly higher (12cm dia. difference). I don't ground out as long as I'm not on too steep of an angle, but getting the TI low to the ground was one of the 3 key design requirements that I had to overcome.

I like what you've added, I am very impressed. Keep up the good work my friend!

Author:  Slaughter [ Thu Dec 01, 2011 1:23 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Great job. All you need is a trailer coupling on the end of that handle. Did you try a mono wheel at some stage at the front of the TI or was it a duel wheel setup I saw down at Patonga, or am I dream'n ? I have wondered if having 1 front wheel that pivots would be the way to go with a TI. Dunno how you would attach it but ........

a bit like this......


Author:  mickeymouse [ Thu Dec 01, 2011 2:39 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

One of my local hobie mates has come up with the solution re a front mono swivelling front wheel. He lives on Raymond Island, just a couple of hundred metres from the water. Using the front swivelling trailer/caravan jockey wheel, locked into the empty mirage drive well - along with the HD scupper cart, he and his wife can effortlessly tow their AIs down to the waters edge. :)
Unfortunately I don't have a photo of this invention. Initially i thought it might put too much stress on the mirage drive but they have been using it regularly now for almost 12 months with no adverse effect.
I think i will be including this along with the dolly cart to launch the TI.
I should add that they are towing it along a smooth bitumen road. It might work on other surfaces providing the front wheel was suitable for the terrain.
With His current design the AI can be wheeled into the water and the front wheel removed in exactly the same way as the mirage drive.
Sorry i haven't got a photo or two to show you but I'm sure you'll get the picture :wink:

Author:  Slaughter [ Thu Dec 01, 2011 4:47 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Thanks Mickey. In fact I use the same sort of idea for moving the AI around the garage and driveway. I keep the AI on a light trailer and use an old swivel office chair, with the back removed, under the trailer coupling. It makes it all so easy to move around and position it at the tow ball.

Author:  NOHUHU [ Fri Dec 02, 2011 5:54 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

An approach like this?



Author:  Slaughter [ Sat Dec 03, 2011 11:50 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

That's what I'm talk'n about. Damn it, I was just about to invent one, go into manufacture and make a killing. The story of my life !!!

Looks like it would work well NOHUHU ??

Author:  NOHUHU [ Sun Dec 04, 2011 12:15 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

:lol: This was Tikis baby. We nudged him along.

If you want to take the 3rd wheel to the next level, check out the drivewell axel ideas.

First person to create a click and go mount will get braggin rights.

Author:  Geordie [ Thu Dec 08, 2011 4:22 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Hey stringy, nice idea. I have not got my new TI yet (about two weeks to wait).

I have to ask what width of Rhino rack bar did you need to fit the TI cradle?
I see the HD Rhino rack comes in 1375, 1400 and 1500mm. Would the shorter 1375mm be wide enough for the cradle and wheels?

Author:  stringy [ Fri Dec 09, 2011 12:33 am ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Sorry for the late replies. End of year has been a bit hectic! :roll:

Thanks for that and of course for your original idea. I haven't tried it in deep sand yet but I've been happy enough with those wheels when I used them on the cart they came with. Your bigger wheels would be better but it's a compromise between cost and size. The 42cm wheels are very expensive downunder.

No I haven't added a front wheel yet, though I like the idea. Mickey's mates jockey wheel idea sounds promising. I've been using a second cart up front at times, either the C-Tug or the Anaconda Deluxe cart with the 30cm beach wheels.

Welcome and congrats on the TI! :)
I'm using those same 30cm wheels from the Anaconda cart. They fit nicely on a 16mm axle. The Rhino bars I used were 1800mm bars I cut down to 1430mm to fit with the framework on my trailer so they are a bit wider than the Hobie cradles (see the pic) which measure about 1200mm. I'd say a 1200mm bar would be OK but you may be safer with the 1375. The 16mm axle fits into the 6mm eyebolts after I ground a small flat edge on the axle. The eyebolts are attached using the Rhino 6mm bar plates from a Rhino basket fitting kit.
I'll be interested to see what you come up with! :wink:

Author:  Geordie [ Mon Feb 06, 2012 9:21 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Have to report that my Anaconda wheels worked well on soft sand but did not like being parked on a hot ashphalt pathway. One wheel went soft and developed a big bulge after only about 10 to 15 min in the sun parked on the hot foot-path whilst I was getting ready (and it was not a really hot day just under 30C).

I have upgraded to this.


I have ordered a second set of cradles so that I can have two mounted on the trailer and a third mounted on the removable section for the dolly.
The wheels are heavy duty brickies wheelbarrow wheels mounted on a 1" heavy wall alloy tube (25mm with 3mm wall), which runs inside the rectangular section. At the moment I am still working out an easy quick release bracket and bolt to mount the trolly to the trailer and easily take it off. I still have not worked out a handle or leg for the dolly to stop it tipping forward when pulling the TI onto it on the beach.


So thanks for the good ideas, it has really started me thinking of new ways to make it easy to cart this thing around.

I will post when I have done a decent test run.

Author:  stringy [ Tue Feb 07, 2012 2:01 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

Very nice work Geordie. 8)
Shame about the Anaconda wheels. I'll be careful to avoid hot bitumen!
I've only ever used the balloon wheels over grass/sand. They have too much drag on hardpack.
I'm still trying to come up with an easily portable yet supportive cart for the TI that is easy to use when retrieving.
I've cut down one set of cradles to hull width and mounted that to a C-Tug via the same Rhino bar as in this post. The other option is to mount the wheels to the hull width Rhino bar (as above) and work out a way to hold the ama out so they miss the wheels.
I'll be testing it thoroughly this week. :)

Author:  stringy [ Sat Feb 18, 2012 5:42 pm ]
Post subject:  Re: Convert the TI cradles into a Dolly cart.

The Hobie cradles mounted to the C-Tug cart were a failure. The C-Tug's high centre of gravity resulted in the cart tipping forward no matter how tight the strap was. :(
I wanted a more portable dolly cart that was able to be fitted into the hatch and realised I didn't need the C-Tug. I could use the same Rhino bar cart as in the start of this post and make a shorter cart out of it. Here are the details:

Begin by cutting the ama supports off the Hobie trailer cradles

Cut the length of bar slightly wider than the cradles. The same fittings can be used. You can also use Uni-strut and channel nuts. I have ordered stainless steel channel nuts now I know this works

Cutting a slot in an eyebolt allows a boat hook to twist and lock in place for the handle

Of course the problem with a narrower dolly cart is that the wheels will contact the ama. If you wheel your boat with ama extended it won't be a problem. I have some narrow launch spots and the boathook helps to keep the folded ama off the wheels

The smaller dollycart now fits easily into the hatch

The HD foam wheels also fit.

This narrower dollycart make retrieving the TI a much simpler operation.
I still prefer the scupper cart for launching though as the keeper pin is much simpler to use than strapping a cart on when the TI is on my trailer. I decided to modify the cradles so they fit my favourite all purpose cart.
Using a hole saw I drilled holes for the cart posts.

The cradles can now be used on a scupper cart to provide better hull support. :)

The carts got a thorough test this last week and I'm happy with the results. One problem that needs improving is that the handle tends to undo the eyebolt when positioning the cart under the hull so I need to work on that.

I am also working on a cart that has a dual role of scupper/dolly cart. Here is a sneak peek:
By tilting the scupper cart forward and repositioning the cradle you have a dollycart.
It's only at the prototype stage. More details later. :wink:

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