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Leader 720TR vs 721TR

Old 02-25-09, 11:09 PM
  #1  
boostaddctn
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Leader 720TR vs 721TR

So I don't know where to put this question, so I figure this place would be the best and hopefully I get some good replies. I've been looking into building up a Leader frame lately and have been stuck deciding between the 720TR (http://www.leaderbikestore.com/pd_ld720tr.cfm) or the 721TR (http://www.leaderbikestore.com/pd-ld.cfm). I really like the way the 721TR looks (tear drops!) but at the same time, my main purpose for the bike is mainly road and I'm afraid the 721TR (track geometry) might be too much for the road. Wondering if anyone can shed some light between the 2 frames and if the 721TR would be all right for mainly road riding (I really prefer the way the 721 looks, but if its too much for the road, such as long rides, I might just stick to the 720). (P.s. please no "ugly welds" "ugly dropout" comments, I've read about em already!) And also does anyone know if Leader fixed the problem of the rear wheel being really close to the frame (all the old threads I searched were pre 2009 models, wondering if the 2009 models were fixed?) and not being able to use much of the dropout on the 721TR ? thanks guys and sorry about the long post, please shed some light for me thanks again!
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Old 02-25-09, 11:28 PM
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le'ehov
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There are definitely no other threads about this, what a great idea.
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Old 02-25-09, 11:33 PM
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Originally Posted by le'ehov View Post
There are definitely no other threads about this, what a great idea.
Well I understand where you are coming from, but no one has replied or commented about the 2009 721TR frames... they have all been 2008 models and I am figuring if they changed the rear triangle on the 2009 models or if its still the same... and basically getting input from those who ride a track frame on the road (60mile + rides) and how they feel about it compared to road geometry frames... thanks for the reply though..
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Old 02-26-09, 12:15 AM
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why would you want to ride a track frame on the road?

unless you only have one frame...

*i was wrong about which was which, so just skip this and read the next reply*

you can find out all about them just by reading leader's site and the threads that are pre-existing. i don't like riding track frames on the street more than 10 miles. i'd rather ride a bike that will let me do the work i need to do without sending me at oncoming cars every time it hit a pebble.

Last edited by cc700; 02-26-09 at 03:10 AM.
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Old 02-26-09, 01:35 AM
  #5  
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Originally Posted by cc700 View Post
why would you want to ride a track frame on the road?

unless you only have one frame...

the 721 is lighter and will be less durable.

the 720 is heavy and made to be beat on.

plenty of people ride track frames on the the street but 99% of them don't frequently do 60+ miles. so again, why?

you can find out all about them just by reading leader's site and the threads that are preexisting.
720TR is lighter than the 721TR. 720TR 56cm is 3.3lb while the 721TR 55cm is 3.6lb. the 720Tr uses Leader road geometry while the 721TR has track geometry. 721TR was designed for ADT etc . Requiring 19c tubular or a max tire size of 23c clincher. 720TR can use tire range from 21c to 28c road tire. both 725TR and 735TR can use the Larger tire sizes as well. Leader Bike will not be changing the geometry on the 721TR because it works and many customers are happy with it. This is why the 725TR exists. is has a less tighter fit and it is what most people on this fixed gear forum want. Time to get the facts from the people who know. At least the people who respond to your thread should at least own the product to get an honest answer. PM anytime.

Brian

Last edited by LeaderBike; 02-26-09 at 01:41 AM.
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Old 02-26-09, 02:14 AM
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So you would recommend the 729TR for mainly road use and those long 60mile+ rides?? sorry about all the questions... I just want to make sure I don't have to end up rebuilding a bike... thanks again Brian

Originally Posted by LeaderBike View Post
720TR is lighter than the 721TR. 720TR 56cm is 3.3lb while the 721TR 55cm is 3.6lb. the 720Tr uses Leader road geometry while the 721TR has track geometry. 721TR was designed for ADT etc . Requiring 19c tubular or a max tire size of 23c clincher. 720TR can use tire range from 21c to 28c road tire. both 725TR and 735TR can use the Larger tire sizes as well. Leader Bike will not be changing the geometry on the 721TR because it works and many customers are happy with it. This is why the 725TR exists. is has a less tighter fit and it is what most people on this fixed gear forum want. Time to get the facts from the people who know. At least the people who respond to your thread should at least own the product to get an honest answer. PM anytime.

Brian
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Old 02-26-09, 03:01 AM
  #7  
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Originally Posted by boostaddctn View Post
So you would recommend the 729TR for mainly road use and those long 60mile+ rides?? sorry about all the questions... I just want to make sure I don't have to end up rebuilding a bike... thanks again Brian
Absolutly get the 720TR frameset with an I802 carbon fork.
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Old 02-26-09, 02:42 PM
  #8  
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Originally Posted by LeaderBike View Post
720TR is lighter than the 721TR. 720TR 56cm is 3.3lb while the 721TR 55cm is 3.6lb. the 720Tr uses Leader road geometry while the 721TR has track geometry. 721TR was designed for ADT etc . Requiring 19c tubular or a max tire size of 23c clincher. 720TR can use tire range from 21c to 28c road tire. both 725TR and 735TR can use the Larger tire sizes as well. Leader Bike will not be changing the geometry on the 721TR because it works and many customers are happy with it. This is why the 725TR exists. is has a less tighter fit and it is what most people on this fixed gear forum want. Time to get the facts from the people who know. At least the people who respond to your thread should at least own the product to get an honest answer. PM anytime.

Brian
between the 720 and the 721, which is going to be the stronger? from what i've heard here so far, many track bikes aren't suited to road riding, because they will dent easier and aren't as sturdy.
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Old 02-26-09, 04:23 PM
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leaderbikestore.com:

720TR is made with tough Series 6061 T6 HT double butted aluminum. The 720TR Fixed Gear frame geometry is similar to road bikes with an aggressive, exciting and comfortable ride. 720TR frame has horizontal dropouts, 120mm rear spacing. The horizontal dropouts have ample room for adjustment; you can use any combination of chain ring/cog choices. 720TR also has built in chain tensioners (set screws) so you can crank it as hard as you like. You can also convert this frame into a track racing bike by just flipping your seat post around.
721TR is made with pure track geometry including: 55mm BB drop, 120mm rear spacing, and long Stainless Steel dropouts for easy sprocket change. Made of 6061 double butted aluminum.


wiki:
Annealed 6061 (6061-O temper) has maximum tensile strength no more than 18,000 psi (125 MPa), and maximum yield strength no more than 8,000 psi (55 MPa). The material has elongation (stretch before ultimate failure) of 25-30 %.

T6 temper 6061 has an ultimate tensile strength of at least 42,000 psi (290 MPa) and yield strength of at least 35,000 psi (241 MPa). In thicknesses of 0.250 inch (6.35 mm) or less, it has elongation of 8% or more; in thicker sections, it has elongation of 10%.
obviously weight depends on the thickness of the tubes which i don't know, but the T6 heat treated alloy should be stronger... and the impossibly obscure marketing terminology of leader's site means nothing if it doesn't mean that the frame labeled 'messenger' is better suited to road riding than the frame named 'track.'

just felt the need to explain why i was confused.
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Old 02-26-09, 04:55 PM
  #10  
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why anybody buys a leader is beyond me.
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Old 02-26-09, 04:57 PM
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because, you can just flip the seatpost around. don't hate
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Old 02-26-09, 08:19 PM
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Originally Posted by dddave View Post
why anybody buys a leader is beyond me.
Maybe you should buy one and find out why. Nice Fuji track pro Dave. I like the blue and white decals.
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Old 02-26-09, 08:49 PM
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Leaders, though maybe not the best "finish", seem, to me, to be a function over form type of bike. This meaning that they'll work just fine, last just as long as a normal bike, just without those nice welds we've come to be used to from Klein's, Cannondale's, and the like (Klein's being the best looking of all).

Basically what I'm trying to say is I'm currently trying to save and justify picking up one of these Leader bikes. I think they're a GREAT value for the cash, and I love oversize alu tubing.

BUT if Leader felt so inclined, it would be soooo cool if they were to offer a limited frame, perhaps in several models with really smooth welds
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Old 02-26-09, 10:08 PM
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too bad it's hard to ride before you buy.

for a company whose marketing strategy is entirely internet based, it's too bad the text available is so poorly composed. i'll go back and read that 'not a coffee bike' thread some more.
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Old 02-26-09, 10:28 PM
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i have a 721 with a carbon easton fork w/ alloy steerer tube. i have 23c clinchers on my custom built wheelset...h+son rear and cxp front. i have had drops, pursuit, and flat bars on my bike. oh of three my favorite are my nitto flats. i ride this bike on the street 24/7 never been on a track. most the streets are **** but not all. i have no issues with the track geometry or anything with it. people give leader a whole bunch of **** about their welds and how they look. its a freaking bike you ride. it rides great. its a tool. its fun.
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Old 02-26-09, 10:30 PM
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Originally Posted by brendon_ak View Post
Leaders, though maybe not the best "finish", seem, to me, to be a function over form type of bike.
though in many ways, also form over function.
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Old 02-26-09, 11:21 PM
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Please explain
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Old 02-27-09, 03:02 AM
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I've have a Leader 720 for about a year. It has held up riding around the city just fine and looks pretty sick (except for the welds, just saying.) The slanting top tube bums me out a little too.
It is good for the money and will serve you well, allowing you to part up. It has held its own in a couple (small) crashes.
One thing I don't like about it is that it doesn't have steel dropouts. For some reason I am always worried they will crack. The steel nut is wearing them down a bit too. Right after I got mine they came out with the 721 and I was a little bummed.
The bike does seem to flex a little, maybe more then i would like...
I just looked at the bikes online, and were I to get another, I would go with the 721 or 725 (it's only $20 more.) Plus you can order these without those f-ing decals under the clear coat i think or they have the "ghost" ones.

Last edited by awk308; 02-27-09 at 04:12 AM. Reason: i am stupid
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Old 02-27-09, 04:11 AM
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Bikes: I am loving my Leader 720. It is a good entry level bike now I am getting the bike buying itch and want to get a better frame.

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^^ I meant sloping top tube.
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Old 02-27-09, 07:26 PM
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at the bottom of the page in the optional accessories area, if i were to add a headset, would it come installed?
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Old 02-27-09, 08:06 PM
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no you'll have to press the cups, unless the fsas just sit in the tube.

Last edited by cc700; 02-27-09 at 08:14 PM.
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Old 02-28-09, 03:14 AM
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you can wait for ebay to have their cashback again and buy the frame on ebay for 25-35% off.
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Old 03-09-09, 01:47 PM
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question: does the 725tr have the same tight rear wheel fitment issue that the 721tr has?
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Old 03-09-09, 05:18 PM
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The 725 did away with the rear wheel issue of the 721
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