I am considering getting an IRO.
I was wondering what was the difference between the Mark V and Mark V pro. Is it just one uses Cro-mo tubing and the other uses Renoylds 631? Does that really make a difference??

I've been riding fixed for about a year and half now. I am def. digging it. I am wanting to upgrade from my conversion. I want something that is reliable, that I will admire, and has track geometry. Im deciding between the BD Kilo TT vs IRO. What do you guys think? Which should I go for? Since I am over the whole beginner bike thing, I want a bike that is very nice and will last a long time. Can the IRO do this? And I am prepared to spend $500 toward it.

I am thinking to buy a frameset, transfer my wheels over and invest in a headset and BB and cranks. How much do you think that would all cost? I am a college student so I can't spend too much but I want the components to be reliable.

And is there going to be another IRO group buy coming up soon? Did you guys really get IRO frames for around $150? If so, I am prepared to wait until next summer to get a groupbuy IRO.

mark V isn't track geometry. pro is supposedly closer.

Geometry and tubing. Probably won't notice the difference, but 631 is really nice.

These aren't track bikes, so I wouldn't expect true track geometry, the mark v pro has the closest track geometry out of the 3. I would go for an iro over the kito tt personally.

would depend on what components you want, you could order a frame, headset, bb and cranks from iro ... price it out at irocycle.com. for what it's worth, the iro cranks are pretty nice, as are their bottom brackets.

tony said he will not be doing anymore group buys during the summer, right now he is doing the rob roy group buy which is done as far as buying into it. The earliest he would have a new group buy would be next winter I would think.

Have ANY of you guys actually _LOOKED_ at the geometries of three frames (angus, markv and mvp)?

It's weird that the Mark V Pro is more 'track' than the Angus, which more 'track' than the Mark V meanwhile the ONLY difference in the frame is the tubing.

Don't take it from me though...

Since when have "facts" ever stood in the way of misinformation repeated ad nauseum on this forum?

That said, I would definitely pay $50 more for the 631 tubing.

first of all, "more track" and "less track" are really stupid ways of refering to frame angles. and, quite frankly, a bike's suitability for "the track" depends on more than that. it depends on the rider, preferred events, riding style, and the track in question. plus, too many people have a sheep-mentality fetish for "tight angles." it's not all about that.

the mark v and the angus have the same geometry. the mark v pro has a tighter front end - a fork with less rake. i'm curious to see how it handles, and i'm with bonechilling - $50 for a frame with 631 is a nice upgrade. may not be able to detect specific differences, thought. cause, come on.

mark v:
"Cro mo", probably butted 4130
Braze-ons for rear brake
1 1/8" threadless fork

mark v pro:
Reynolds 631
No braze-ons for rear brake, hole for front brake
1 1/8" threadless

Angus
Reynolds 631
No braze ons, hole for front brake
1" threaded
Orange paint.


The geometry is the same, except the mark v pro has a 30mm rake fork (although they don't say what the other ones have).

Ive seen a Mark V Pro in person, looks nice. The shop it was at hadnt gotten any in yet, but someone visiting had one. The top and down tubes are teardrop shaped, and the rake is tighter than the regular Mark V. The guy who worked at the shop who sold the frame second hand to the kid said it was the shizznit. He couldnt say enough good things about them. I almost bought one but needed a frame and didnt want to wait, I got a bareknuckle instead.

Im seriously thinking about building a beater/racer/barspinning bike with a Pro frameset, sickness.

wow teardrop shaped tubes? that's nice. Makes me want to get one, hmm free shipping ends tomorrow.
I was also wondering what the difference b/t the angus and mark v pro was? what warrants an angus to be $50 more? I only see the angus is a bit lighter, has a taller stand over height, and has only threaded fork to come with it.

Also what was the price of the IRO group buy frames? How much was shipping approximately? If it is alot lower than the website price, I just might wait it out until next winter.

other than the threaded fork and back brake drilling, not sure what warrants the $30 price difference between the mark v pro and the angus. both have same geometry and are reyno 631. guess you have to pay for threaded forks and the color orange these days.

if you go to the website, they have the new 2008 Mark V's coming in. No longer teardrop shaped tubes, but round shaped tubes and it comes in red and blue now. The dude on the phone also mentioned that they were going to have changes to the jamie roy sometime in mid 2008, they're not sure yet but probably change it to steel from aluminum.

how come the pro With supposedly better tubing weights exactly the same?

Have you looked at the fork rake? The Mark V Pro has a squirrelly 30 degree rake while the Mark V standard has, IIRC, a 42 degree rake.

everytime i see/hear the phrase ad nauseum, i wanna burn something down

Because fork rake really has to do with the frame.

Theyre both ugly.

Wow, you really have no idea about frame geometry, do you? The FR directly effects how the frame handles; it's directly connected to the frames geometry.

The frame geometry has nothing to do with the fork rake. Fork rake affects how the bicycle handles, but saying the fork rake is directly connected to the frame geometry is like saying wheel size affects frame geometry.

I think I disagree. Frames are often designed with a particular fork rake as a consideration. Wheel size also does have an impact on the way a frame is designed. Ask the 650b crowd and they will tell you more than you care to hear.

Damn Straight.

Exactly my point, the wheel size and fork rake affect how the bicycle handles, and they are factors when determining frame geometry, but they don't change the frame geometry. That is to say, if I slap a track fork on a touring frame, I did not just make the touring frame a track frame. Did I change the way the bike handles? Certainly. Did I change the frame geometry? Of course not.

Wasn't this thread started to ask about the differences between the Mark V and the Mark V Pro? It seems to me that the different fork rake would be quite important.

Fine, the fork is different. The frame is not (aside from tubing).

Yep, and the different fork will produce a different ride.

Soooo...
its winter 2008, a year later.
Still no IRO group buy.
BTW I've still been using the conversion bike I was using last year.
I bought 2 used road bikes recently and am going to sell one but have been riding the other alot. Its a vintage trek with shimano 105 components.
But I'm still looking for a new track-like frame.
Checked the IRO website and it seems the Mark V Pros are sold out. BUt for some reason the mark v pro price listed is $20 cheaper than mark v. guess they didn't update it.
I am thinking after I get some money, I'll look toward buying a leader frame. Specifically the 721TR frame with fork combo on ebay for $318: https://cgi.ebay.com/NEW-ALUMINUM-TRA...3%3A2|294%3A50
either that or the IRO angus or mark v frameset

anyone have a mark v pro they wanna sell?

Hey guys its summer 2009 and I finally ordered a Mark V!
Since then I've ridden two different bikes, a tri and road bike. I've learned I like the slack geometry of road bikes more. But I'm hoping the steeper head angle of the IRO would provide a different experience.
Hopefully the IRO will be a bike I keep for years, and not just one I sell after a few months of riding.