Fueldup wrote:Would the IRS bolt straight in where the swingaxle comes out of or is it a heap of work to make it fit ?
It's not a heap of work to make it fit if the body is off the pan and you are handy with a welder. Everything will bolt straight in except for the front diagonal arm pivots. If you compare the last picture of a swingaxle on the previous page to the pictures of the IRS on this page you will see the little pivot boxes that are missing. And if you look closely at the picture of my floorpan above you can see them in the corners, that's because the back half of my floorpan is Superbug.
Here's a quick thread on how to do the pivot boxes
http://forums.aussieveedubbers.com/viewtopic.php?tid=76337&page=1#pid728784
You will have to make or borrow a jig the same as the one in this thread to hold the pivot boxes in the correct place in order to weld them. You can make a jig using the superbug floorpan you pull your IRS bits off.
Nils also does this in his build thread that I posted on the first page for you to read.
You can buy the pivot boxes from VW stores. And I can highly recommend a pair from CVD, I have a set and the quality is exceptional.
http://www.customveedub.com.au/store/index.php?act=viewProd&productId=22
Fueldup wrote:Now I also realise that I will need an IRS to be able to run the Kombi gearbox, and what a bugger that the superbugs had a great rear suspension and a not so great front, well thats what I think I have worked out please correct me if I am wrong.
Yeah, the superbug's front suspension is not rugged or strong enough to be used offroad. The struts mount on to the body, and this can crack or flex. There's no way to raised the suspension easily. And the travel is limited. It is a fantastic for onroad use, and you'd probably get away with it in a stock height Baja that you only used on fire trails or the beach.
People commonly buy a wrecked one for the rear suspension pieces to convert to IRS. You need the diagonal arms, spring plates, torsion bars and brakes etc.
I have wrecked a superbug for this reason.
The other thing you can do is buy a non-super Semi auto and convert it to manual, cause they are all IRS. Or get a 1976 Beetle, this is the last year they were built in Australia and they and balljoint front end and IRS rear.
Fueldup wrote:One thing I have learnt from speaking to you guys is that the setup on these beetles is more advanced than many modern cars and probably nearly all 4wds, do you find they can really cover rough ground quick compared to a 4wd ? With so much suspension travel I would have thought so.
I wouldn't say that the suspension is more advanced. You're talking about 1930's technology here. It's very agricultural and not really much advanced from a tractor. Modern suspension is far far far better........onroad. The VW suspension is great offroad because it's very rugged, overengineered and can take a beating. Also, when the wheels hit a bump or hole the wheel moves back, up and away from the obstacle. This takes a lot of energy out of the blow. Whereas in a 4WD the suspension basically goes up and down with only a very small amount of rearward deflection given by the rubber bushes.
As far as driving fast, that depends a lot on your suspension set up, shocks, travel, etc. I wouldn't recommend driving super fast in a swingaxle. I've had the rear end of the car in mine overtake me on a dirt road a few months back. But generally they can go quite fast.
This has just reminded me of something else. If you haven't bought a copy of Baja Bugs and Buggies by Jeff Hibbard, do so immediately. While some of the information is quite dated, there's a lot of good tips and tricks in there all about offroad VWs.
http://www.amazon.com/Baja-Bugs-Buggies-VW-based-off-road/dp/0895861860/ref=sr_1_1?s=books&ie=UTF8&qid=1303692875&sr=1-1
Smiley out
๐
If you said I was a Volkswagen man, you'd be right.