Regular readers on this website must find my advice about geometry resembles a stuck record and is useful only as a substitute for sleeping tablets.Nem":33enrr29 said:If all else fails and I do need to look for a new fork I'm so far assuming that, it would need to be 80mm or less travel so not to upset the geometry of the bike, (or would 100mm be ok)? definitely needs v-brake mounts, and I'm assuming a 1 1/8 steerer tube for the Zaskar?
Nevertheless, the Zaskar will have been designed for a 63mm fork, so an 80mm fork being longer would reduce the head angle and thus make the handling dead/less lively. A 100mm fork, being longer still, would deaden the handling down even more. But all is not lost, because a shorter stem will make the handling more lively, so you can dial in a shorter stem to compensate for a longer fork. Say you have a 120 stem at present, try a 105 with an 80mm form. Or an 85/90 with a 100mm fork. It isn't an exact compensation, but it's not far out.
Either 80 or 100 will work, but without wanting to state the obvious, it depends how much travel you want/need. And how much you want to shorten the riding position, and how much more upright you want your posture to be. Everybody likes travel, but you can have too much of it as far as forwards momentum is concerned, and you would probably find a modern fork so much better than a Judy that 80mm would seem to be all you need.
That's what I would try for starters anyway. But every reason to try to fix the Judy, as you could then use it to part-fund a purchase.