Choujinki Metalder
Title: 超人機メタルダー, Choujinki Metalder​, Superhuman-Machine Metalder
Genre: tokusatsu
Episodes: 39
Broadcast period: from March 16, 1987 to January 17, 1988
More info
English subtitles!

Episode 1 by HiNoTori-Fansub www.hinotori-fansubs.com
Episodes 2-20, 31-39 and Movie by Dead Fish Fansub (defunct)
Episodes 21-30 are DVD rips with very good English subs from bootleg release.

01-04 http://adf.ly/1HDQO4
05-08 http://adf.ly/1HDQO8
09-12 http://adf.ly/1HDQOB
13-16 http://adf.ly/1HDQOF
17-20 http://adf.ly/1HDQOH
21-24 http://adf.ly/1HDQOK
25-28 http://adf.ly/1HDQOP
29-32 http://adf.ly/1HDQOS
33-36 http://adf.ly/1HDQOV
37-39-movie http://adf.ly/1HDQOX