In going from a 100mm diameter to a 200mm diameter you doubled the diameter.
If you multiply the diameter by 2 you change the collecting area by 2 x 2 = 4. So with 4 times the area each tip will be caused by 1/4 = 0.25 as much rain as with no modification.
If you increase the original 100mm to 310mm, you have increased the collecting area by 3.1 x 3.1 = 9.61. With 9.61 times the area each tip will be caused by 1/9.61 = 0.104 as much rain as with no modification.
That’s what that figure it sounds like to me.
Maybe you could do a rough check by holding a ruler against your gauge?
Not precise, but it should at least indicate which figure is more likely.
Wish my mod was as clean as yours lol, damn glue gun
Niko, heres that thread where kve has a 0.16 tip and hes doing ok so
i can see there being too much of an issue with mine, but like i said, if
there are any i will just take off the top bowl and go back to the 200mm
I’m just concerned that in a real downpour there will be so much water going through there that it can’t tip fast enough to measure correctly and will under-report, but hey, this is all about experimentation so why not
Will find out soon enough, supposed to be some rain tomoz, will see.
I have a manual bucket that i made up myself yesterday (from the met office)
its not 100% perfect but it will give me a fair comparison to work with, i will let
you know how it goes
Since yesterday we have had a total of 6.7 mm Some was heavy late last night
cause of the bad wind (was banging on the window anyway lol) anyway, i just
checked the manual gauge and it was between 6mm and 7mm. I only did 1mm
increments and it was hard enough doing them lol but from what i can see its
working ok at present.
I suppose it really needs a good downpour to get a proper idea so i will report
again whenever that happens
WMR200 (essentially the same gauge?) quotes the ‘range’ as 0 mm/hr - 999 mm/hr,
which I think implies it ought to be able to handle approx. 16 tips a minute, i.e approx. 1.6mm/min with a 0.1mm conversion.
A 10 times standard modification (i.e. 0.1mm) does seem to be pushing it!
If the 1.6 mm/min I calculated is valid, Bashy’s mod might have just been in danger of overload twice here yesterday (i.e. I twice has 2 x 1mm tips in the same minute), but then we probably get a bit more rain on average than he does - and the wind would probably have ripped the big funnel off anyway.
With a less sensitive fallback in place to catch really extreme events it’s an experiment though.
I had a max gust of 52mph with a average max of 39mph yesterday and i was very
surprised myself that the funnel stayed put It aint the funnel im worried about
thats stuck pretty fast, i was expecting the bucket itself to end up on the floor lol