Titanium vs chromoly
- Thread starter 2005 1m
- Start date
lol titanium is to soft and just rips where chromoly will bend and and you can still ride out with some sort of suspension.
M
madsledder
Well-known member
titanium that is used is too thin makeing it weak but the chromoly from my experience is ok. Often it is thinner tube to make it light and a bit stronger.
Both have their place, Titanium is 1/3 lighter than Chromoly, it is also stronger than chromoly but more flexible (less Ridgid). So depending on the designer both can be used to their full potential. If they heat treat the chromoly after they weld them to regain the strength lost when welding the Chromoly, thinner tube can be utilized and be can as light as Titanium. Neither one should damage the chassis if designed correctly.
Wow, I ALWAYS had assumed that it was the other way around, Ti seems so brittle that I thought it was more rigid (then snapped) where Cro-mo seems to bend instead.
I've yet to see TI arms take any kind of hit & hold up well, where like said above, my Cro-mo arms seem to bend & leave you something to ride out on.
(and when you buy a product with moly in it... you support the mine right up the road from me, whoohoo!
)Wow, I ALWAYS had assumed that it was the other way around, Ti seems so brittle that I thought it was more rigid (then snapped) where Cro-mo seems to bend instead.
I've yet to see TI arms take any kind of hit & hold up well, where like said above, my Cro-mo arms seem to bend & leave you something to ride out on.
(and when you buy a product with moly in it... you support the mine right up the road from me, whoohoo!
Curious who's TI parts they were and how / where they broke? At the welds, or close would be my guess. Which is a result of improper welding. TI is really sensitive to O2 (oxygen) when at elevated temperatures. It is produced in a Vacuum furnaces to keep the O2 out of it. If they are not purging both the inside and the outside of the tubes when welding it or doing in in a purge chamber, you are better off with chromoly. If they are not post heat treating the chromoly they are leaving a lot on the table as to strength.
yup... at the welds, but once they take a hit, they seem to have no strength left I'd assume due to the thin walls. Not sure on brand of one, and one was an alt impact arm, it's been my experience in those two arms I've seen go (ti isn't that common) and in the bikes I've seen take a digger. I think Ti stuff is made with SUCH a focus for weight, that they perhaps compromise wall thickness, so once it's bent... there's nothing left. I like the stuff, but in something that needs to take a hit like an A arm, IMO, it's less than ideal. (not that it can't be, just that it often is from what I've seen)
Yes, Not to say that they could not be made to survive a hit, they could be, but the current design should be thought of like helmets. If you take a good digger / hit with it, it is trash and replace it.
If he was to focus more on the quality of the welds and change the arm design so the stress is in the tube rather than the weld it would likely survive a good digger / hit undamaged, but they are apparently happy with them as they are currently designed.
One could even mold them from CF but as there is no difference between the Yield strength (bend) and Tensile strength (pulls apart) of CF so you have no warning as to when it will break, for those of us that ride the back country that is just not an option. You could likely carry a full set of spares for what the stockers weigh but you may not live to get them swapped. There may come a day when CF is feesable for that, as resin technology is growing at a very quick pace, some of the F1 cars are using CF transmission cases and engine parts now, and have CF suspension pieces but they are on relatively flat surfaces.
K
kllongbrake
ACCOUNT CLOSED
I like the aero tube moly ones made by the guy that was selling them through west coast sleds. He's still making them. Or was last season. Very strong but with a dog bone installed they broke off at the welds and saved my bulkhead. No a-arm was going to take the 30mph hit that ripped everything off the clutch side. But everyday abuse they hold up to extremely well. $175 a side.
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