Quagga Posted March 25, 2021 Share Sure not 50km/h and its rare to completely spin out but on tempo rides on gravel/tar I found I was missing the bigger gear and pedaling at a much faster cadence than what was efficient. The 36 gave me a top end on my gearing that was much closer to what I had on my previous 2x10 If I manage to add a gravel bike to my collection sometime in the future I will go back to a 34 on the mtb.So then you are on your own? or are you riding with people that still runs 2 x10 Link to comment Share on other sites More sharing options...
Skubarra Posted March 25, 2021 Share So then you are on your own? or are you riding with people that still runs 2 x10 I mtb with different people, weekends usually social rides on trails, during the week intervals/tempo rides with some fast buggers. Most of them are on 1x11 & 36 but not all. Link to comment Share on other sites More sharing options...
Frosty Posted March 25, 2021 Share To the guys who say they "spin out" at what RPM do you "spin out" ? In the groups I ride, we are doing the same speed so either we all "spin out" or we are in the 32 x 10 or 32 x11 (me in this have to do 8rpm more than the others) So I am not sure where this "spinning out" happen you are talking about ?“Spinning out” is like reaching terminal velocity. You’re spinning the legs but can’t generate anymore speed. Someone with a bigger gear will be able to reach a higher speed at the same cadence. Here is my 5 mins at that cadence where I can no longer go faster. dasilvarsa 1 Link to comment Share on other sites More sharing options...
Zebra Posted March 25, 2021 Share I spin out pretty much of the route from top of Suikerbossie past 12 Apostles Hotel, on a 2x setup; chainring is 36T, 10-speed cluster, 11T is hardest gear, so spin out on 36/11... Going up to a 38T chainring, but yes, this is tar commuting, and HP slicks on an MTB... I GUESS I SPIN OUT at AROUND 110 rpm, but no longer have cadence stats.... So, I am one who definitely spins out, incl around CapePoint, etc, but onTAR.CheersChris Skubarra 1 Link to comment Share on other sites More sharing options...
NotSoBigBen Posted March 26, 2021 Share Just sitting here amused, you'll never have the prefect gear for ALL situations. Even roadies will sometimes 'spin out' but only you can decide what compromise you're prepared to make. On a 1x either you have a bad a$$ big gear and be part of the 'cool kids club' or you have a climb the wall type easy gear. Only by knowing what kind of terrain you mostly ride can you decide.... Its really not rocket science You know like single speeders always say they 'always have the wrong gear' but it's their choice and they live with it Round vs Oval... Like others I have only really felt that it helps with steep technical climbs where I seem to be able to turn the gear over and keep going easier, as far as the 'a 34 is like a 32 when climbing and a 36 at speed' not so much. Less fatigue not sure if makes so much difference I can out right state that it helps, not easy to judge. A 34 oval is my go to gear on all my bikes, go figure Link to comment Share on other sites More sharing options...
ChrisF Posted March 26, 2021 Share Who are you riding with and what gearing do they have?All my rding buddies (all 4 of them ) run 1 x systems and I am yet to "spin out" but then again I can sit at 115 rpm for a while36 to 11 gearing. At 50km/h I am at about 115 rpm. For me ... anything over 100rpm becomes uncomfortable, ie not sustainable for long periods. This around 40 to 45km/h is the useable limit for my setup. Yes, I would use a downhill to get the speed going, but on a few sections I can keep going at about 100rpm along the flats ... Yes, this only happen on the tar sections from the trails, and then only on the downhills. As the route from my house to the trails is pretty much one long steady climb my return trip is only governed by traffic and safety .... All this said, the gearing is spot on for the trails, and good enough for the rest Edited March 26, 2021 by ChrisF DieselnDust 1 Link to comment Share on other sites More sharing options...
The Ouzo Posted March 26, 2021 Share [comic sans]if only there was an online gearing calculator so that people could calculate speed/gear/rpm ratio[/comic sans] Edited March 26, 2021 by ouzo 'Kaze Pete and River Rat 2 Link to comment Share on other sites More sharing options...
Quagga Posted March 26, 2021 Share I mtb with different people, weekends usually social rides on trails, during the week intervals/tempo rides with some fast buggers. Most of them are on 1x11 & 36 but not all.So they have mtb’s but ride road/ gravel???? dasilvarsa 1 Link to comment Share on other sites More sharing options...
Quagga Posted March 26, 2021 Share “Spinning out” is like reaching terminal velocity. You’re spinning the legs but can’t generate anymore speed. Someone with a bigger gear will be able to reach a higher speed at the same cadence. Here is my 5 mins at that cadence where I can no longer go faster. What is the rpm?Lots of people say spin out. But don’t post rpm. I have a friend that “spins out” at 95 rpm That is spinning out in my mind. That is not training correctly DieselnDust 1 Link to comment Share on other sites More sharing options...
TNT1 Posted March 26, 2021 Share if only there was an online gearing calculator so that people could calculate speed/gear/rpm ratioMaybe that was tongue in cheek, but here you go:https://www.bikecalc.com/speed_at_cadence nickc and dasilvarsa 2 Link to comment Share on other sites More sharing options...
DieselnDust Posted March 26, 2021 Share True ! .But you only lift the weight of your leg on the recovery back stroke and all your weight again in the forward stroke when you walk. When you cycle with a round ring you are forced to use comparatively more power in the upstroke than you would when walking .Round rings certainly make the hamstring muscles stronger .I alternate between both chainrings regularly .Oval rings always feel less heavy than the round ones .Probably because the power distribution is closer to walking .So round ones are really for aliens like Chris VROOOMmmm Riiiiiiight can you pass me one of those joints too please Link to comment Share on other sites More sharing options...
Frosty Posted March 26, 2021 Share What is the rpm?Lots of people say spin out. But don’t post rpm. I have a friend that “spins out” at 95 rpm That is spinning out in my mind. That is not training correctlyAs mentioned before I don’t have anything to measure cadence on my MTB. Online calculators would indicate using 34-11, 29-2.25 at 45km/h the cadence is 105rpm, at 47km/h it’s 110rpm and at max speed it is 115rpm. This is based on a negative gradient where freewheeling is not an option and bragging rights to get to the end of the road is the reward. On a tar descent of a similar grade, I could easily get 5-10km/h faster owing to the better surface. Edit: I know what cadence feels like, as 90% of my rides are done as a roadie with a PM giving that feedback. Except for structured intervals, where I need to stay within a defined power range, I don’t need to watch my cadence as it’s become second nature. Edited March 26, 2021 by Frosty Link to comment Share on other sites More sharing options...
The Ouzo Posted March 26, 2021 Share Maybe that was tongue in cheek, but here you go:https://www.bikecalc.com/speed_at_cadenceon desktop it would have appeared in comic sans. I'll fix it for those not on desktop 'Kaze Pete 1 Link to comment Share on other sites More sharing options...
'Kaze Pete Posted March 26, 2021 Share if only there was an online gearing calculator so that people could calculate speed/gear/rpm ratioIf only there was a bloke called Sheldon Brown... [emoji848] Link to comment Share on other sites More sharing options...
Skubarra Posted March 26, 2021 Share So they have mtb’s but also ride road/ gravel fixed it for you Link to comment Share on other sites More sharing options...
dasilvarsa Posted March 26, 2021 Share So they have mtb’s but ride road/ gravelDuring the Day in Gauteng you'll see a Hundred MTB's on the Road and Pavements before you see One Road Bikeexcept Early Morning 3-6 AM Then you'll see Hundreds of Road Bikes and Some MTB's. Link to comment Share on other sites More sharing options...
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