which of the bargain frames are 4130?
 

I know the 04 pista was reynolds 631. what tube material are the pake, iro, mercier, etc etc?

the steamroller is 4130, i believe. so is the pake.

'04 Pista was Reynolds 520 not 631.

Angus is also 520, I think.
Pake, Mercier and IRO Mark V are 4130.

angus is reynolds 631...

yea trudat, 520 on the 04 pista

I would be willing to bet that all the 'bargain' track frames, eg. winsor, fuji track, etc, are all 4130.

I highly doubt that any are made with hi-ten tubing.

Here is a question for anyone.
Is there any discernable difference between the 4130 used on "low end" frames like the Pake and Windsor and the True Temper Verus 4130 used on Ben's Milwaukee cycles?

it is my understanding that hi-ten is garbage.

mine too.

In actual ride 'feel'? I would bet not, assuming all are equal; eg. same # of butting, or straight guage.

It's also about brands. I bet most will like better a branded tube set by reynolds, true temper, etc, over a generic one, even if the quailty is comparable.

So, 4130 is 4130 and True Temper is simply a brand name?

I don't notice any. Maybe in terms of wheight there is a differnce. Tubing diameter and shape will have a much more dramatic effect than steel composition.

The branded tubesets might be of a slightly higher quality, but this is just speculation.

Certainly I don't think it makes any difference in ride qaulity. I think that construction methods have a larger impact on ride quality than specific tubings.

I see.

the KHS is 520, so I was assuming the mercier is as well. maybe that's where the price difference comes from.

The 4130 on "low end" frames is different that the TT Verus HT used in the milwaukee.
Remember, you're talking about a tubing *material* not a *tube set*. remeber you have to take into account butting profile, tube diameters, tube shape, geometry etcetcetc in addition to just plain material properties.

i.e. the HT Verus tubes are stronger than plain 4130, thus letting TT draw them to a thinner wall thickness for lighter weight, yet equal strength.
but how this translates into ride quality is mostly dependent on geometry. (except the weight savings bit)

I believe 520 is reynolds' brand name for 4130 steel.

anyone confirm?

you thinkin about building up a beater, eddie?

I am now educated.
I've always been all, "A 4130 frame for $500!? What is Ben's trying to pull?"
But now I understand.

nope, just got curious

i'll be curious to get this 631/725 mutt home, build it up and see how it rides.

hmm, i just did some quick internet research on the matter and i found several frames mentioned that use both 520 and 4130 in the same frame -- 520 for the main tubing and 4130 stays. although hardly conclusive, i'd think that this would indicate some difference in characteristics, but, of course, it might just be cost related.

that said, 520 appears to be the same as the 525 tubing that they describe on their website: http://www.reynoldscycles.co.uk/steel525.html. From the page: "Reynolds also use the 520 decal for Reynolds chrome-moly tubing made under license to our specification." Based on this, it doesn't seem as though Reynolds actually manufactures 520.

people seem to generally regard 520 is fairly low-end stuff, but that it's the same as 4130 didn't show up anywhere. take this as you will.

k thanks shants

*gasp* someone used a search engine? :beer:

pretty much. 25CrMo4
Reynolds 520 is like 525, but drawn by someone other than Reynolds, to Reynolds specs

the ultimate strngth isn't much different than 631, but it lacks the air hardening properties that 631 has.