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What size MTB is right?


TLK

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Posted

 

Thanks for the replies!

Here is a chart showing the different sizes and what size you should pick depending on your hight. So from the chart you can see where I sit between either the large or medium.

I am going for set up tomorrow and will see what they say will be best. The bike shop has been great and said if it is the wrong size I can always swop it for a medium :)

 

 

Just don't let them bully you into taking something with a stem longer than 60mm. If it needs a 100mm stem, it's the wrong size for you.

Posted

I'd say that you made the wrong choice.

I'm 180 and fit the medium frame for almost all brands.

Always get the smallest frame that you can fit on.

 

This post proves that you can get the worst possible advice from a forum.

 

Firstly. You get the frame that feels right for you. Unless you are dirtypot's identical twin! We all have different geometry in leg length, arm length and body height so it makes perfect sense that what fits one 1.8 metre cyclist may not fit the next guy who is 1.78 m in height.

 

Secondly. You do not get the smallest frame you can fit onto, what nonsense is that and who came up with that idea? I can fit onto a small and I am 1.95 metres tall, trust me I would not buy a small just because I can fit onto it. This statement needs to be qualified. Buy that frame that fits you, comfortably. 

Posted

Opinions are like arseholes - everyone has one.

My previous statement was meant in terms of - if the large frame is hit or miss whether it's too big then get the smaller frame. It's easier to make a smaller frame fit than using a frame that's too big.

Posted

   

 

Just don't let them bully you into taking something with a stem longer than 60mm. If it needs a 100mm stem, it's the wrong size for you.

 

I think specialized choose a 100mm stem for a large Epic as a starting point because for the way they designed the geometry of that bike and for the way they think it will be used a 100mm stem puts the correct amount of weight on the front wheel.

 

Saying anything longer than 60mm is wrong is a big generalization. Climbing is a big strength of that bike and the weight distribution is part of that. I ride with a 90mm stem and the bike is plenty stable for me. 

Posted

I think specialized choose a 100mm stem for a large Epic as a starting point because for the way they designed the geometry of that bike and for the way they think it will be used a 100mm stem puts the correct amount of weight on the front wheel.

 

Saying anything longer than 60mm is wrong is a big generalization. Climbing is a big strength of that bike and the weight distribution is part of that. I ride with a 90mm stem and the bike is plenty stable for me. 

and ensures that when things get rough, inexperienced riders will feel far more over the front and likely to go otb than if they had shorter stems on a larger frame. They also choose it for the fact that it's a race bike, and because of their road bike heritage and the way that that has influenced frame design up until now. 

 

It's a generalisation that I stand by. Firmly... We are not Sauser or Kulhavey or Schurter, who can get around the technical inefficiencies of a long stem due to their own technical abilities, and have the risk of losing it all on the climbs due to the extra weight that a larger frame would bring. 

 

For the vast majority of riders, a larger frame / shorter stem combo will in my opinion (and many others who have vastly more experience than I in these matters) be the superior option. 

Posted

.....

 

They also choose it because it matches the head tube angle of the frame. The Epic is not a PYGA stage which is designed around a shorter stem and a slacker head angle.

 

This racing bike waiting to kick you over the bars rumor is exaggerated. When you travel miles of dirt road you sit down. When you climb you sit down. When you do a technical descent you stand with your weight further back and a 29er marathon is still plenty stable.  

I'm not an industry expert but my experience in this matter is that I ride an Epic exactly as it was shipped and it feels just right. This after years of riding an Anthem that never felt right.

Posted

I am 1,81 and I ride a M Cannondale HT. If you are riding a dual I would not worry to much if the seatpost is near full extension. I went with a Thompson and it's fine on my HT.

Posted

How tall you are is not the sole factor in determining size.

 

Look on www.competitivecyclist.com. They have a fit calculator that will give you a very accurate idea of what size frame you can look at.

 

Things like inseam, reach, torso etc play a major role in frame size.

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