Iwan Kemp Posted June 22, 2012 Share There is a rule that you can settle for a one size smaller, but never one size bigger.There is no such rule. Ride the right size bike and be done with it. many pro riders choose a frame size smaller than they are supposed to have. They say it makes for a more nimble, responsive ride.Not on a road bike, not on XC or Marathon bikes... Only when doing freeride or choosing a setup for a specific DH course and then it's more down to wheelbase than TT. If you are comfortable, stick with it.Not necessarily. You can get used to the wrong thing I've never checked the geometry myself, but I've been told that Scott frames are generally on the big side anyway.Must be thinking about Giant. Scott is in the ball park for it's quoted size. Other than that... Edited June 22, 2012 by The Crow Link to comment Share on other sites More sharing options...
Iwan Kemp Posted June 22, 2012 Share Wow, I'm really grateful for the advice and responses. Someone asked me about the bike I have - it's a 2012 Scott Spark Team 29er, MEDIUM with a 400mm seat post. Please click on the link to see a picture of the bike http://www.scott-spo.../spark-29-team/I'd say get a second opinion from a specialist. If indeed it is too small you can, and most likely will, suffer quite a bit in the long run. Not worth it. The length of your seatpost is a result of some other stuff and not a definitive indicator. How much of it is sticking out is more of an indicator.What you're really after is reach (Effective TT Length + Stem Length) and even here there are other thing to consider in your setup. Spacers, Rise or flat bars, Stem drop or rise, Saddle fore and aft... Edited June 22, 2012 by The Crow Link to comment Share on other sites More sharing options...
Grebel Posted June 22, 2012 Share If you want to do some research yourself prior to getting the bike fit done, go and have a look at this site: Competitive Cyclist I used it to size both the bikes that I bought online. The only change that I made to the setup when they arrived was a shorter stem on my road bike. Other than that it was seat position and height and go ride. The calculator gives you dimensions for everything as far as I can remember. Link to comment Share on other sites More sharing options...
Motard660 Posted June 22, 2012 Share Wow, I'm really grateful for the advice and responses. Someone asked me about the bike I have - it's a 2012 Scott Spark Team 29er, MEDIUM with a 400mm seat post. Please click on the link to see a picture of the bike http://www.scott-sports.com/us/en/products/221701/spark-29-team/ Well, I like the bike.....where did you find your wife who bought you this? Want to go look there for one! :-) Link to comment Share on other sites More sharing options...
Romulus Posted June 22, 2012 Share I'd say get a second opinion from a specialist. If indeed it is too small you can, and most likely will, suffer quite a bit in the long run. Not worth it. The length of your seatpost is a result of some other stuff and not a definitive indicator. How much of it is sticking out is more of an indicator.What you're really after is reach (Effective TT Length + Stem Length) and even here there are other thing to consider in your setup. Spacers, Rise or flat bars, Stem drop or rise, Saddle fore and aft...Thanks. Who would you recommend in Cape Town? Link to comment Share on other sites More sharing options...
Romulus Posted June 22, 2012 Share Well, I like the bike.....where did you find your wife who bought you this? Want to go look there for one! :-)Haha. She bought it with my money:) Link to comment Share on other sites More sharing options...
Tankman Posted June 23, 2012 Share @Romulus .... you probably dont want to hear that the bike is too small for you and listening to the guys that say you can make it fit must sound tempting. If a bike is to small, its too small. You can ride it and make it fit .... for around 30min and up to an hour. Try riding a too small bike for 3 hours and your chiropractor and physio is going to start loving your daily payments treatments. If you really want to know you need to go for a proper bike setup. There is a lot more to a bike setup than just height but to give you an example. I am 1.86m and on the 29er Scott Spark (Pro) I did not even consider the Medium. After setting up the Large and taking it for a spin, I was still not in my correct riding position. Setup the XL and bingo, that would be the size for me if I had to buy a Scott. I've never checked the geometry myself, but I've been told that Scott frames are generally on the big side anyway. Suggest you check then. Scott geometry is actually smaller. Even on the "suggested" Scott size chart you should be an a Large Romulus Link to comment Share on other sites More sharing options...
Caerus Posted June 23, 2012 Share Maybe look at just replacing the frame, if its to small. Link to comment Share on other sites More sharing options...
arendoog Posted June 23, 2012 Share Very good advice given so far .If you can sit on the bike with the seat all the way back and you can see the front axle halfway crossing the stem your bike is not to small .Figure out your Effective top tube lenght and remember that .it always come back to that measurement for correct frame sizing.The rest is tweeking until it is comfortable .A shop made a 20' frame fit me just to make the sale and i still hate them for that .I am 192cm and need at least 22' frame .Your own knowlege is your best defence.An honest lbs is worth a lot too.I do think you need a large thou Edited June 23, 2012 by arendoog Link to comment Share on other sites More sharing options...
MTB_Roadie Posted June 23, 2012 Share I went to Renay, I must admit it made a huge difference. I am 1.84m, I ride a large MTB, my roadbike is a Medium with a 120mm stem, top tube is 55.7 as which is perfect for me, but anyway roadbikes have a different geometry depending on brand....back to MTB. I own a 29er and 26er, both of them is large and seatpost is quite far out, so I cant really see you riding a Medium MTB as that is more for the 168cm - 175cm market. Edited June 23, 2012 by MTB_Roadie Link to comment Share on other sites More sharing options...
Dogfish Posted August 8, 2012 Share Hi guys, ! am am about to spend some hard earned money on a new MTB but have the same issue.I am 1.84 and have been riding a medium 29er and felt pretty good, I have never been setup or fitted.a tried a large and Medium in the new bike in question but my findings were that on the large i am a bit stretched out in my arms and legs. when the seat is set to a comfortable height on both the large and medium, the large seat it almost the same height as the handle bars where as the medium is a bit higher. (is this a good size indicator) the LBS seems to think so. the medium does feel more comfortable but opinions and size charts suggest otherwise. Really don't want to make a decision that i end up regretting. the bikes is also a scott spark.. Link to comment Share on other sites More sharing options...
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