OzVMX Forum

Marque Remarks => Suzuki => Topic started by: skypig on March 10, 2021, 08:47:24 am

Title: From “Tech Talk” Suzuki RM125X (1981) Swingarm alloy type - for welding
Post by: skypig on March 10, 2021, 08:47:24 am

I’ll try the Suzuki forum

The swingarm has a crack through an existing weld.
Anyone know what the alloy is? (6061?) or the likely “series”. (6000?)
Or what sort of filler rod I should use with my TIG.

Also any clues as to the best replacement bearings, top and bottom of the vertical swingarm mounted “Full Floater” linkages.

Thanks for any clues.

Title: Re: From “Tech Talk” Suzuki RM125X (1981) Swingarm alloy type - for welding
Post by: Momus on March 10, 2021, 07:57:03 pm

Quote from: skypig on March 10, 2021, 08:47:24 am

I’ll try the Suzuki forum

The swingarm has a crack through an existing weld.
Anyone know what the alloy is? (6061?) or the likely “series”. (6000?)
Or what sort of filler rod I should use with my TIG.

Also any clues as to the best replacement bearings, top and bottom of the vertical swingarm mounted “Full Floater” linkages.

Thanks for any clues.

5356 for wrought 6061 material. 4043 for cast to cast or cast to wrought.

Pretty sure those bearings are a nigger size and need to be genuine.

Title: Re: From “Tech Talk” Suzuki RM125X (1981) Swingarm alloy type - for welding
Post by: skypig on March 11, 2021, 10:20:42 am

Thanks!!

I remember in 1981 the bearings in one end were $20 each. (My wage was $90/week as an apprentice, and the bike cost $1500)
I think they are now $100+ each, if you can find them.

Title: Re: From “Tech Talk” Suzuki RM125X (1981) Swingarm alloy type - for welding
Post by: LWC82PE on March 20, 2021, 11:27:14 am

I found this info -  The Japanese developed the 7005 series aluminum for swingarms so they wouldn't have to heat treat after welding, Filer rod  possibly 4043 but research to be sure.

Title: Re: From “Tech Talk” Suzuki RM125X (1981) Swingarm alloy type - for welding
Post by: skypig on March 20, 2021, 05:30:49 pm

Quote from: LWC82PE on March 20, 2021, 11:27:14 am

I found this info -  The Japanese developed the 7005 series aluminum for swingarms so they wouldn't have to heat treat after welding, Filer rod  possibly 4043 but research to be sure.

Good info. Thanks.