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IRO Mark V HD - Always trying to please...

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IRO Mark V HD - Always trying to please...

Old 06-04-07, 05:18 PM
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exfreewheeler
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IRO Mark V HD - Always trying to please...

Our friend who is IRO... Tony, has once again reached out to those who cried out for help... in finding the right size for the "height-disadvantaged"...

hence the IRO Mark V HD.

http://www.irofixedgear.com/index.as...PROD&ProdID=50
(Dig the wheels on that puppy!)

I will always buy something from Tony.
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Old 06-04-07, 05:41 PM
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friend just got one and the only complaints are in the fact that they shipped the wrong fork with it and she got the wrong fixed cog. nice bike though and light as hell

I should mention that they are shipping her the right parts.. nothing against IRO
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Old 06-05-07, 08:38 PM
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The seat post tube has some girth!

Seat Post - IRO Alloy 72.2
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Old 06-05-07, 08:48 PM
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Originally Posted by crisdlc
Any reviews on this bike?
Hey! It's an IRO!
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Old 06-06-07, 08:30 AM
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Originally Posted by crisdlc
Any reviews on this bike?

I'm a short (5'4") rider and I'm seriously considering this bike. Will this bike be a good fit or too small. The site says 5' or shorter. Trying to decide between a 50cm Mark V or this Mark V HD. Or, am I better off finding a 49cm frame?

Thanks for the help!
Standover is an important measure for most people- wearing whatever shoes you cycle in, measure ground-crotch distance. The 50cm 700c iro has a 29.5" standover- if this gives you enough clearance, then it's probably the bike for you, as it also has a pretty short top tube. If not, then start looking at the HD.
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Old 06-06-07, 08:35 AM
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Originally Posted by fatbat
Standover is an important measure for most people- wearing whatever shoes you cycle in, measure ground-crotch distance. The 50cm 700c iro has a 29.5" standover- if this gives you enough clearance, then it's probably the bike for you, as it also has a pretty short top tube. If not, then start looking at the HD.
Yes and most people buy bikes at walmart and ride them 3 times a year.

Standover is completely meaningless for people who actually ride unless they are mountain biking.

the markV hd is probably way to small for someone who is 5'4"
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Old 06-06-07, 08:38 AM
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Originally Posted by crisdlc
Any reviews on this bike?

I'm a short (5'4") rider and I'm seriously considering this bike. Will this bike be a good fit or too small. The site says 5' or shorter. Trying to decide between a 50cm Mark V or this Mark V HD. Or, am I better off finding a 49cm frame?

Thanks for the help!

I'd say if you can fit on a standard 50 Mark V stay with that. The Mark V has good stand over regardless, I ride a 51cm frame generally (I'm 5'9" with a 30" inseam) but went with a 53 Mark V because the 50 was too small. The other big thing is that the Mark V HD has 650c wheels on it. Personally I'd much rather stick to standard 700c wheels and not have to deal with the odd 650c size unless I HAD too and with a Mark V you really don't have too at 5'4".

Otherwise...ya, it's an IRO...you really can't go wrong.
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Old 06-06-07, 09:08 AM
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The nice thing about the 650 wheels is it allows the bike to have a shorter top-tube, which is probably one of the most important aspects of bike fit. It cuts a lot of toe-overlap, too.
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Old 06-06-07, 09:12 AM
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Originally Posted by Aeroplane
The nice thing about the 650 wheels is it allows the bike to have a shorter top-tube, which is probably one of the most important aspects of bike fit. It cuts a lot of toe-overlap, too.
Yes and yes...but then you have odd sized wheels that generally a LBS can't do much with (even some good LBS don't deal with much 650c tires/tubes). The Mark V has pretty open geometry anyway. I have no toe over lap on my 53, not even close. I do deal with toe overlap on my roadie which is a 51 compact and another fixed frame I have which is a 51.

there are trade off but sticking to 700c wheels would be a sticker for me if I was debating between the two.
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Old 06-06-07, 09:37 AM
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Originally Posted by IRO website description
This bike is for anyone 5 Feet tall and under.
this is a pretty sweeping statment. what are the actual measurements? are there size options?
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Old 06-06-07, 09:39 AM
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Originally Posted by danish
this is a pretty sweeping statment. what are the actual measurements? are there size options?
50cm tt
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Old 06-06-07, 09:44 AM
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Originally Posted by obstacle
Yes and yes...but then you have odd sized wheels that generally a LBS can't do much with (even some good LBS don't deal with much 650c tires/tubes).
If you have trouble finding 650c tires/tubes, you aren't looking hard enough. There are tons of sources for them online and any shop that has triathlon stuff should be able to help you out too.
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Old 06-06-07, 10:05 AM
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Originally Posted by Aeroplane
If you have trouble finding 650c tires/tubes, you aren't looking hard enough. There are tons of sources for them online and any shop that has triathlon stuff should be able to help you out too.

Yes online...and LBSs that do Tri stuff. I'm just making a point here that depending on where the guy lives it might be an issue to find stuff locally. Thanks for running it into the ground.
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Old 06-06-07, 10:21 AM
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for other interested lazies and stupids like me, the specs are on the, ahem, framespec page:

http://www.irofixedgear.com/index.as...on=Custom&ID=4

Size 46cm
S/T c-c 42 cm
T/T Length 50 cm
H/T Angle 73.5.0
S/T Angle 74.5.0
H/T Length 9 cm
Wheel Base 90 cm
B/B Drop 5 cm
C/S Length 36 cm
Stand Over 27"
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Old 06-06-07, 11:04 AM
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apparently, this bike is perfect for communing.

all you communers out there...you know who you are.
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Old 06-06-07, 11:12 AM
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The toptube is 2cm shorter than the 50cm Mark V

Considering that anyone who can fit the standover of the 50cm frame can probably find an appropriate stem to get correct reach on that frame as well. Unless you are like 5'4" with a crotch up to your armpits.
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Old 06-06-07, 11:43 AM
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I am 5'5". The 50cm IRO is just a hair long for me. i don't have as much clearance over the top tube as i'd like, and the top tube is just long enough for me that it's undesirable. it's my everyday rider, but i'm very aware of how my 49/51cm track bike fits better.

I don't think I would have bought this Mark V HD if it were an option, but i think that anybody who can tell that they're shorter than me without having to stand us back-to-back should definitely go for this over the 50cm.
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Old 06-06-07, 11:49 AM
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Originally Posted by queerpunk
I am 5'5". The 50cm IRO is just a hair long for me. i don't have as much clearance over the top tube as i'd like, and the top tube is just long enough for me that it's undesirable. it's my everyday rider, but i'm very aware of how my 49/51cm track bike fits better.

I don't think I would have bought this Mark V HD if it were an option, but i think that anybody who can tell that they're shorter than me without having to stand us back-to-back should definitely go for this over the 50cm.
I stand corrected. (Actually I tower above you corrected puny man!)
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Old 06-06-07, 11:49 AM
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Originally Posted by queerpunk
I am 5'5". The 50cm IRO is just a hair long for me. i don't have as much clearance over the top tube as i'd like, and the top tube is just long enough for me that it's undesirable. it's my everyday rider, but i'm very aware of how my 49/51cm track bike fits better.

I don't think I would have bought this Mark V HD if it were an option, but i think that anybody who can tell that they're shorter than me without having to stand us back-to-back should definitely go for this over the 50cm.
what's your ideal stand over
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Old 06-06-07, 01:03 PM
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Surly builds the Long Haul Trucker with 26" wheels in the 52cm size because you have to sacrifice some handling to fit larger 700c wheels in the smaller sizes. I realize the geometry of this bike is much different, but I would guess that this bike is more ideal geometry/handling wise than the 50cm for the same reason.
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Old 06-06-07, 09:48 PM
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Hell, even Mountain Equipment Co-op (like a Canadian REI) carries 650c stuff now ...
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Old 07-11-07, 12:24 AM
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Will this bike frame fit 650b tires, 1.5" width? Can I just use the stock wheel and put a 650b tire on it?
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Old 07-11-07, 06:49 AM
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The frame may fit 650b wheels and tires, but wheel and tire sizes should always match. Do not put 650b tires on 650c wheels, that's just a dumb move.
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Old 07-11-07, 07:20 AM
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Originally Posted by kemmer
Surly builds the Long Haul Trucker with 26" wheels in the 52cm size because you have to sacrifice some handling to fit larger 700c wheels in the smaller sizes. I realize the geometry of this bike is much different, but I would guess that this bike is more ideal geometry/handling wise than the 50cm for the same reason.
yeah. i really, really want to try one of these little bikes out.
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Old 07-11-07, 12:32 PM
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My girl wants to get the HD but she wants bigger tires. What's the best way to accomplish this? Bring the stock 650c wheelset to my LBS and have them build me a 650b wheelset using the IRO hubs?
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