RC Tank Warfare community hobby forum

hello
found this on the web may be of some use to someone , think it was R C Universe but not sure , anyway thanks to who ever posted this on the web very usefull
Schematics for heng long tanks.
will need adobe reader installing to view files

enjoy
phil

can someone expalins these for me please.

basically they are board schematics for the h/long circuit boards the only one of any real use is the last one for the rx13

i think these are the work of shmark from gloucester  shame hes still not about would love him to look at the rx18