Rollover Jig Fabrication.

[laneychief]

Hi Guys,

Need to get under Morris to do some welding, decided me and my friend are going to make a rollover jig, I know quite a few of you have built your own already, I was wondering if you could post me some pictures of your own so I can start getting some ideas for mine?

Thanks very much for your help!


Edd

[katy]

Here's one that was just sold: http://mmoc.org.uk/viewtopic.php?f=8&t=53900

[bmcecosse]

Edd - I have made a roll jig - but never used it so far. PM me an email address and I will send some pics. It's fairly crude - but I have every expectation that it will do the job when I do eventually need it. Mine is the type that bolts to hubs - others make and use jigs which rely on the bumper supports to carry the weight - I would only fancy that type if the shell is stripped right out. And I suspect there may be a risk of the shell bending in the middle....... The hub type has the disadvantage that the suspension mountings must still be strong enough to take the side loads. Of course - some just roll the car onto old tyres/mattress etc - and it seems to work for them! That may be ok for a Saloon - but I wouldn't fancy it for a Trav or a Conv.

[qwerty165]

This is the jig that I have made, though it does require solid bumper irons.
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[bmcecosse]

Excellent! Very sturdy!!

[chesney]

One I've seen uses two plywood sections - one bolted over where the back seat would go, and one bolted over the battery tray, and a scaffold pole passes through both, so the car is held through the middle rather than the irons. As Morris did it!

[bmcecosse]

Yes - I remember that one - v ingenious. I've also seen one where simple quadrants of thick ply were cut and bolted to the bumper irons at each end - the car then rolls over on the ply! Again -needs the strength in the bumper irons.... I have a picture of that one - somewhere...

[don58van]

Here is my effort.

It is a bit crude as I am inexperienced with this type of work and the design changed as work progressed. I relied on my experience with meccano 50+ years ago.

It doesn't rely on bumper irons (the areas near my mounting points front and rear need work) as it uses the strong mounting points for the front dampers and the rear bumper iron mounts. There is a steel pipe skewer through the middle.

It is based on two engine stands. I modified them to allow the upright slide up and down. I used two trailer jacks to raise and lower the rotisserie.

I used a ventilated disk brake as a pulley and a trailer winch to rotate the skewer (it won't control the chassis if it goes over-centre when upside down, so care is needed). It requires negligible effort to turn the chassis to any angle. I bought two laser-cut disks (from a rotisserie kit supplier) to lock the chassis at any angle.

As the engine stands are on casters, it is easy to push the chassis around the garage (and out of it when required). I have used it to wheel the chassis onto a tilt-tray truck.

Am I satisfied with the way it works? Yes. It has its quirks, but I have been very pleased with it.

I made it so that I will have two perfectly standard trailer jacks and unmodified winch when I am finished with the rotisserie. The stands will revert to be perfectly usable as engine stands.

I hope there will spark some inspiration for members.

Don
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[Trickydicky]

Hi Don, that's a right Heath Robinson roll over jig, he would have been proud of that!!!!

http://intotheorchard.com/2012/09/21/heath-robinson/

If you have never heard of the phrase just google Heath Robinson for a explanation.

[laneychief]

Wow, thanks everyone! Keep them coming!

Nothing like a bit of inspiration!


Very much appreciated!

[bmcecosse]

That one is clever ! Did it really need a winch to roll it over?

[don58van]

Did it really need a winch to roll it over?

BMC

I rarely have access to a helper for the rolling. I wanted to set it up so that I could safely and easily roll it myself. This setup achieves these goals.

The problem is that with the skewer set parallel to the chassis rails and as low as I could go through the hole in the firewall, the chassis is very bottom-heavy. So a fair bit of work needs to be done to to swing it towards upside-down.

Without the winch, it takes two moderately strong guys (making various grunting noises) to roll it upside-down. If one of us were to lose our hold, it could be nasty.

The winch allows safe (it has a ratchet) effort-free and precise rolling. I can rely on the winch to lock the chassis in position while I insert the locking pins in the disks at each end of the skewer.

Don

[bmcecosse]

Yes -I can see that. But of course a 'conterbalance' could maybe be fitted (even just hung on temporarily) to make it more evenly balanced ? It's just that not everyone has a handy winch lying around!