« previous next »
Pages: [1]   Go Down

Author Topic: '71 frame  (Read 1950 times)

0 Members and 1 Guest are viewing this topic.

Offline YUMASTEPSIDE

  • Legend
  • *****
  • Posts: 802
    • View Profile
'71 frame
« on: February 24, 2008, 04:24:55 pm »
Does anyone know if the '71 MC250 frames were mild steel or chrome moly ?

                Roger
Logged

firko

  • Guest
Re: '71 frame
« Reply #1 on: February 24, 2008, 05:33:49 pm »
Chrome Moly
Logged

Offline Freakshow

  • Superstar
  • ******
  • Posts: 7277
  • Adelaide, SA - looking for a "YZA" tank
    • View Profile
Re: '71 frame
« Reply #2 on: February 27, 2008, 12:38:38 am »
ON a side note how do you tell the differances of the metal if you wante to confirm it ? magnet ?
Logged
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline PEZBerq

  • Legend
  • *****
  • Posts: 1094
  • Brisbane
    • View Profile
Re: '71 frame
« Reply #3 on: March 05, 2008, 10:56:01 pm »
Nope.  Both are magnetic. 

I know a metascope analyser will do the job - a portable machine that detects the Chromium in the spectra.  Dont know any simple way sorry.  Anyone else know about metallurgy?
Logged
Husqvarnas: 78 390AMX, 82 430XC, 84 240WR, 84 500AE, 84 510TE, 87 510TE
Pages: [1]   Go Up
« previous next »