38 mm forks

[Wasp]

Would anyone know when the 38 mm forks where first fitted . Year and hopefully month . Thanks .

[sleepy]

Got a Maico owner manual here from Nov 1975 that list 38mm forks.

[Wasp]

Thanks , what years where the forks with  the external springs ?

[sleepy]

The last external spring forks where on the 1974 4 speed models. The first 5 speed models had internal springs but I'm not sure on the size. Most likely 38mm from what I can see from spares parts info. That would mean they where available early 75.

[sleepy]

I should add that the external spring forks are 36mm. The 38mm went up to 1979 and in 80 we got the 42mm.

[Wasp]

Thanks , So we can conclude 38 mm ( actually 37.80 )  1975 -1979 . I will make a batch of fork springs  31.5 mm OD by 560 mm long . This will give the option to run the PD valves or a spacer .

[sleepy]

The travel of the forks changed across the years. 76 had 220mm, 77 had 245mm and 78 had 254mm. Not sure on the 75 travel.

[Wasp]

Thanks Sleepy for that valuable info . I have designed the springs to take 260 mm travel incl Preload  and PD Valve . People without the Valve will have to use a 18 mm spacer to make up for it .