Roll pegs 350x mounted up!!

[aldochina]

wondering if the mounting plate is the same metal as the peg. From what i understand the pegs are cast 17-4 stainless, wanted to do some fab work to a set, but if the plate is the same as the peg I may have to rethink my approach. thanks for the input!



** I edited the title of this thread, and added pics, rather than start a new one. thanks**

[barnett468]

hello aldochina;


it would be difficult to determine exactly what the mounting plate is made out of, however, it looks like the 17-4 does not come that thick, so it seems reasonable to guess that it is some other type of material like chromoly. this is because most grades of stainless [not the 17-4] are between a grade 2 and grade 5 hardness. it would be nuts to make the plates out of this but they may have.

mild steel would be nuts too. i would use chromoly.

there is such a thing as magnetic stainless but i might try to paint strip a piece to bare metal and look at it and also put a magnet on it and see if it sticks.

if it looks like stainless and the magnet does not stick, it is highly unlikely it is stainless imo.

also, if you take a round file to an edge of the plate and it barely leaves a mark it is plenty hard.

just curious, what exactly are you trying to do?

[barnett468]

POST CORRECTION

Wow, what the heck am i talkin about, lol?

"if it looks like stainless and the magnet does not stick, it is highly unlikely it is stainless imo."

should read:

"if it looks like stainless but the magnet does not stick, it is likely magnetic stainless.

I have no edit button.

[aldochina]

already tried the magnet trick, the peg and plate are both magnetic, 17-4 stainless IS magnetic though. Have not tried the file trick yet. I will be adapting a set to my 350x. Wanted to cut and weld a new mounting plate to the old. thanks for the input Barnett.

[barnett468]

Hello aldochina;


Sure no prob, glad to be of no help, lol.

As you may know, you can weld any steel to any stainless, however, if you will be welding to 17-4 if you weld the peg or possibly 17-4 if that is what the plate is [but I doubt it], I would call a local welding shop for advice or email your question to the site below. You might want 630, 308 or 309 rod. If it was NOT 17-4 then you could use almost any rod including 70s2.

http://www.welding-advisers.com/index.html

[aldochina]

well, for this set for the time being, i decided to just make an adapter plate and not modify the peg at all. Figured they would look alittle cleaner, and aesthetically pleasing if I cut and welded them. went through alot of trial and error in my head. They came pretty good, I will post some pics later with a few more ?'s, and some info on the mod!

[barnett468]

Ok, cool we'll look forward to the update. Sorry I or no one else had better info for you.

[aldochina]

Oh no problem man, I just figured someone around here may have tried this before. I did some research and came up with little. I think Billy one time put a set on his tri-z, but not sure if he cut or welded the actual peg. I am still working out a few little things. Making sure they will not interfere with anything. They fit nice on the bare frame, but want to try them on my 350 to make sure there are no issues with shifter or brake. I tried to keep them pretty much in the stock location.

[aldochina]

thanks elcamexican! Ya, thats why I decided not to weld them, being unsure of the base metal, and the fact I would have to probably get some specialty rod I dont have, and get some argon. to many unknowns, and obviously you dont want your peg mounts cracking! lol. Maybe if I do another set down the road. 17-4 stainless is considered martensitic.

[DohcBikes]

Metallurgy blows my dang mind. This thread is total gibberish to me lol..... better go do some research now haha

[barnett468]

Metallurgy blows my dang mind. This thread is total gibberish to me lol.

Is this more clear, lol?


See full article in link below.

ABSTRACT

Ferritic and austenitic stainless steels exhibit moderate levels of strength which are adequate for a wide
range of applications. Martensitic stainless steels offer significantly higher strengths, but have very low
ductility. For applications requiring high levels of strength (typically, above 600 MPa, 87 KSI in tensile
strength) and a moderate ductility, alloys from the precipitation strengthened family of stainless steels
are often considered as potential candidates. The most popular alloy of this family is 17-4 PH. Full dense
version of this alloy, produced via MIM route, has gained a high degree of acceptance in many
demanding applications.

http://www.hoganas.com/Documents/Pub...less_steel.pdf

[DohcBikes]

Oh ya, precipitation strengthened martensitic 17-4 PH SS, I just remembered that I know all about these things.

Clear as mud

[aldochina]

heres some pics of what i have, text to follow.

[aldochina]

some mounted to frame

[barnett468]

hello

1. nice workmanship.

2. from what i can see it looks like the peg and bracket are cast as one piece. if so the bracket is obviously the same material.

3. please use grade 8 bolts in the bracket to the frame.

4. PLEASE add a third allen between the peg to form a triangle or Increase your health insurance.