It appeared to be quite hard to find clean Herschel conduits, especially without those annoying blocks left over from B-heptominoes. So far I've found only a few.
Tail-up H -> Down H (here and further I assume that blinkers can be cleaned up whenever appropriate):
x = 24, y = 11, rule = B3/S23
b3o10b3o$o3bo8bo3bo2$4bo8bo9bo$o7b2o7bo3bobo$2b3o2bo2bo2b3o5b3o$3b2ob
2o2b2ob2o6bo3$5b8o$6bob2obo!
Tail-down H -> Tail-up H
x = 29, y = 37, rule = B3/S23
2bo$3o$obo$o$10bo12bo$9b3o10b3o$8b5o8b5o$8b5o8b5o$9bo6b2o6bo$10b3o3b2o
3b3o$13bobo2bobo$15bo2bo$13bo6bo$14b6o$14bo4bo13$13bo12bo$12bobo10bobo
$11bo3bo8bo3bo$12bo2bo8bo2bo$12bobo4b2o4bobo$13b3o3b2o3b3o$16bo6bo$15b
o2b4o2bo$19b2o$16b3o2b3o!
Tail-down H -> Down H
x = 53, y = 36, rule = B3/S23
18bo$16b3o$16bobo$16bo7$34bo12bo$34bo12bo$33bobo10bobo$34bo12bo$34bo
12bo$bo12bo20bo3b4o3bo$bo12bo24b4o$obo10bobo19b4o4b4o$bo12bo$bo12bo22b
o6bo$2bo3b4o3bo24b2o2b2o$6b4o$2b4o4b4o2$4bo6bo$5b2o2b2o27bo12bo$38bo
12bo$37bobo10bobo$38bo12bo$38bo12bo$39bo3b4o3bo$43b4o$39b4o4b4o2$41bo
6bo$42b2o2b2o!
And here is my favourite. Though it does the same transformation as the previous one, but it appears to be less obtrusive. It is also quite important, that it has all weekenders on one side. It may happen to be very helpful for
shifting the reaction away from the igniter spaceship track, because there should be no weekenders on its way.
Tail-down H -> Down H
x = 42, y = 50, rule = B3/S23
2bo$3o$obo$o7$18bo12bo$18bo12bo$17bobo10bobo$18bo12bo$18bo12bo$19bo3b
4o3bo$23b4o$19b4o4b4o2$21bo6bo$22b2o2b2o4$24bo12bo$23b3o10b3o$23b3o10b
3o3$26bo3b2o3bo$24bob4o2b4obo$24bob4o2b4obo2$28b6o$27b2o4b2o$27b2o4b2o
3$27bo12bo$26b3o10b3o$26b3o10b3o3$29bo3b2o3bo$27bob4o2b4obo$27bob4o2b
4obo2$31b6o$30b2o4b2o$30b2o4b2o!
Maybe it makes sense to come back to Pi conduits again and try to find some with side-product gliders.
codeholic wrote:This reaction is not quite usable, because the pi is too close to the weekenders.
There are ways to ignite a reaction with a LWSS or a MWSS, though it may require more weekenders in the beginning. Here is an example:
x = 58, y = 47, rule = B3/S23
14bo12bo$13b3o10b3o7bo12bo$13b3o10b3o6b3o10b3o$34b5o8b5o$34b5o8b5o$16b
o3b2o3bo9bo6b2o6bo$14bob4o2b4obo8b3o3b2o3b3o$14bob4o2b4obo11bobo2bobo$
41bo2bo$18b6o15bo6bo$17b2o4b2o15b6o$17b2o4b2o15bo4bo3$4bo12bo25bo12bo$
4bo12bo25bo12bo$3bobo10bobo23bobo10bobo$4bo12bo25bo12bo$4bo12bo25bo12b
o$5bo3b4o3bo27bo3b4o3bo$9b4o35b4o$5b4o4b4o27b4o4b4o2$7bo6bo31bo6bo$8b
2o2b2o33b2o2b2o6$37b3o10b3o2$37bobo10bobo$38bo12bo$30b3o$30bo2bo5b2ob
6ob2o$30bo$3o10b3o14bo9bo2bo2bo2bo$obo10bobo15bobo$3o10b3o25b8o$b2o4b
2o4b2o29b2o$6bo2bo31b2o4b2o$2bobo6bobo$3b10o$5bo4bo$5bo4bo$5bo4bo!
An important thing that might be crucial for synthesising an igniter spaceship is
conduit bifurcation. I'm not even sure yet, how to approach this problem. AFAIK, there are no appropriate search programs out there for that kind of thing. Twin centuries are quite common (thanks to the queen bee), but I haven't tried century conduits yet, and honestly I don't expect them to be very promising (though I may be mistaked easily).