While I agree with all you say (that it is possible to tour with the equipment you described), I would say it is better to have purpose built equipment. As with anything, a better tool makes life more enjoyable. Do you NEED better bike/equipment? No, but it sure makes things nicer. It is a lot like being in riding shape before a tour. You don't have to be in great shape (I usually am not) but it does make it easier and more enjoyable if you are.
I would like to know who thinks Ortliebs are indestructible? I have found they are not by any means.
Out of curiosity, what do you normally ride on tour and what is your normal equipment?
Tailwinds, John
I cannot argue against that. The thing is that many people simply cannot spend the money for a bunch of expensive bicycling equipment. They already have these bikes. It is easy to modify them to eliminate whatever it is about them that makes them less than highly suitable for loaded, transcontinental cycling. No question that a new expensive touring bicycle is the best bike to have, but in terms of actual function cycling across a continent, there is little to no difference at all, but a very large difference in cost.
I have modified an old Mongoose IBOC mountain bike, $1500.00---$2000.00 when new, exactly as I have described here. I have cycled around locally on it. It is surprisingly responsive. It is perhaps the most responsive bicycle I have ever ridden. I say perhaps because I have no way of precisely measuring cycling efficiency except by giving an observation of how it feels. I have not used it fully loaded at distances, yet. I am looking at the ST east to west for this winter which I have already done 7 times, 5 times completely, and twice from Florida to El Paso. As they say, the proof is in the pudding. There is one way to find out, and that is by doing it. I have familiarized myself with the experiences of others who used MTBs for fully-loaded, long distance touring, modified or unmodified. From what I have learned, there should be no problem with it, but I cannot really know until I know. I will let experience my teacher.
I did not say in any way shape or form that doing this is a mere possibility. I stated it in terms of hard tangible realities. People have toured around the world on MTBs. I notice on this forum posts starting out with misstatements of original posts, and continuing a line of reasoning or argument based on a false premise. I have not read or heard any complaints from people using MTB frames.
Once a bike is modified to exactly the same riding geometry as a touring bicycle, or nearly so, how can the expensive bicycle provide a superior function? The fact is it cannot.
Pulling into a camp ground or hostel or some place along an etablished touring route with a $2000.00 bicycle, and panniers and handlebar bag that cost $500.00, with a jersey that cost $75.00 and $125 shorts and $150 shoes, all shining and glistening in the sun conveys a sense of finance and status, and that is what that is mostly about. That is not what cycle touring is about. It is about travel, healthful exercise, fitness, discovery, exhilerating the senses, increasing the oxygen carrying capacity of the blood. It is a beneficial way of expressing personal freedom. It can have its hardships, yes, but that is life. Fact is, many people cannot afford the status symbol equipment. Fact is they can do the same thing for far less.
After the MTB's geometry is the same or nearly the same as the touring bike, what makes the high dollar machine superior in function? It is easy to say the touring bike is better, so, exactly what is its function that is so much better, precisely? I can think of one thing. The 26 inch wheels and tires seem to pick up every little bump and crack and deliver it through the frame. That is one difference I have noticed between a touring bike and MTB. I do not like that at all. It feels weird, but I suppose one can adjust to it and not be bothered about it after a while.