A list of the last 100 comments (mostly questions and answers) on this website:
I cannot find roller diameter, which is also important dimension.
Hi Ekene, Table 2 shows which tyre width fits which rim. It’s conservative, i.e. I’ve exceeded the limits shown there…
Hi Neil, Out of all the mix-matching I’ve done over the past decades, I can’t recall ever having tried to…
Hello, wonderful explanation!!! I have a rim that is 26” 559 x 14, any ideas on the tires to fit?
Hi! I currently have Dura Ace SL-BSR1 bar end shifters and running 1x (indexed) with a GRX rear derailleur on…
Hi Tony, That INNICYCLE product doesn’t fix the inherent safety concern about threaded stems – i.e. it’s still all held…
Just found your site yesterday. Great content! I have an old ’81 Miyata 912. Original headset, or it’s o.e. replacement…
Hi James, I think that’s a good idea – and that is exactly what I’ve been using over the past……
Hi Relja I will go for the G10 option then, they don’t seem to have a G25 option. Thanks James
Hi James, Those are G100 bearings. I would prefer G25 quality. However, it is fair to say that I have…
Hi Relja Would the following be ok for a Shimano rear hub? https://simplybearings.co.uk/shop/Cycling-/-Biking-Bike-Bearings-Loose-Balls/c5409_5413_5415/index.html?selection=AISI+52100+Chrome+Steel+Loose+Ball+Bearings James
Thanks Relja for taking the time for putting this information together! Very detailed and helpful!
Hi Boris, Yes, I believe the old 10-speed Tiagra (4600 series) will work fine with that RD.
Hi, and thanks for the great article. I am considering converting my 3×9 setup to 1×10, while keeping my rd-m592…
Hi Scott, A saddle that works for me (i.e. what I use) is: Fizik Antares R3 Open K:IUM – the…
Thank you for this article, it was very informative. Hoping you can help me out in finding a specific type…
Regarding, measuring the internal diameter of the frame seat tube, I wouldn’t just measure at the top, as it could…
Hi Mark, I haven’t used them ever, so don’t really have an opinion. They don’t look like a better, more…
Hi Dannie, That would depend on the type/model of cranks you have. If it’s a square taper and it has…
What are your thoughts about using the little plastic plugs that go in the spoke holes?
I have a 2008 [Mongoose XR-75] 21 speed, how do I thighten the crank???
Hi Mantas, A very good question – I should add it to the article. Generally: – If there is a…
What about rim strips/tapes that have smooth and rough sides, which side is better facing the rim or tube ?
Hi Elijah, As far as I know, Sora is still compatible with the older stuff. This article explicitly notes the…
Hey Relja, Thanks for the informative article! I have a new Shimano Sora left brifter (ST-R3000) and an old Shimano…
Hi Christophe, My latest YouTube video is titled “What length square taper axle do I need?” and I think it…
Hey Relja You’re explanations are super clear as always ! I was wondering if you explain somewhere the differente lenght…
“Their Zee (RD-M640-SS), and Saint (RD-M820-SS) RDs are noted as 10 speed only. While the Deore you noted does say…
Hi Mike, Regarding RD hangers, steel can be bent back more times than aluminium. For aluminium (and carbon) frames, as…
Your dropout comment is valid perhaps for steel, aluminum and titanium frames, but for carbon fibre a separate solid dropout…
the 622X13 rims you describe are mainly used with the narrow 700×22 tires as they are racing rims,i have the…
why would they even make alloy rear derailer hangers when all previous bikes had them built into the rear steel…
Hi Luigi, Derailleur must be compatible with the (indexed) shifter. For a 50T largest chainring, and triple cranks, you generally…
Hi, dear Relja. Thanks for your Compatibility series artile, it’s really helpful. I’ve read the article about Shifter and FD,…
too many newer bikes do have expendable parts,now i am not saying all new bikes are trash but too many…
Hi Relja,just dropped in to say hello i hope all is well,Roger Musson is in the process of writing his…
Very useful article. I have been aware for long enouigh of the Phillips/Posidrive devide but not of JIS – still…
Hi Paul, That’s a very logical and reasonable question, but the answer may be disappointing. I wouldn’t bet my life…
What criteria determine the shape and location of rear derailleur dropouts? why are there so many designs of replaceable dropout…
Hi Robert, Thank you for taking the time to write this feedback. It’s always great to hear that my work…
Hi, I really appreciate you being so transparent. Your site is of immense worth to me as a new bike…
Thank you. This was very informative. Malta is not bicycle or motorbike friendly as we have poor infrastructure and way…
Sheldon Brown’s site was a great role model and inspiration – but I don’t copy/paste any articles, even Sheldon Brown’s.…
How much of this is copy-pasted from Sheldon Brown??
Wow, great website. I knew nothing about bearings but wanting to start servicing my old GT bike myself, this website…
yes old thread 1 mm take up is incorrect. seat post will slip down as it will rock from side…
Hi Edis, The performance score is such because of the quality of the used components. Brakes, brake levers, housing, shifters,…
Hi, thanks for in-depth review on this one. I wonder, what has totaled to such a low performance score, which…
Hi Relja. Thanks for the confirmation. Best wishes and many thanks,
Hi Luca, The answer is no. Rim and tyre diameter must match in order for tyres to fit. Even when…
hi I m working in a old bike fit with 35-590 tires, do you think I can fit on the…
Hi Carlos, I usually take chain-length calculator results, print them out, and use the paper to start a barbecue. :)…
Or wrap the new chain around the 38T chainring and 42T sprocket (instead of the 50T sprocket) and add two…
Or alternatively, I would wrap the new chain around the 38T chainring and 42T sprocket (instead of the 50T) and…
Thinking about it, I may be able to answer my own question of how short the chain would need to…
Thank you Relja. Much appreciated! I´ve tried to research the chain wrap capacity of the 1 X SRAM AXS X01…
Hi Carlos, To answer that question, we need two pieces of information: 1) The total chain wrap capacity needed (tooth…
People swear by Mobex this and Park Tool that… nothing but Finish Line Lithium Grease with Teflon for me!
Hi, What a great resource! Thank you. My question regards swapping front chainrings on a 1 X system. I want…
Hi Brian, The first thing on my mind is to check the cable and housing routing and cable tension. For…
Update: I installed the Microshift TS39 3×7 shifters. The rear shifter is working well. But I’m having problems with the…
Hi, 🙂 Yes, the table chart is quite “conservative,” so combinations shown to work there are pretty certain to work…
In Japan they still have these bikes with drum brakes in the rear. I actually went to one store that…
Hi this is a good webpage and the comments section rocks, Here is a long story made short: I bought…
Hi Martin, The ISO (ETRTO) tyre width ranges listed in table 2 are very “conservative” so to speak. So, If…
Hi Again Relja (and sorry for getting you name wrong in my last post, I blame autocorrect), I meant to…
HI Rely, Thanks for your reply which was very helpful. I think on this basis I’ll go ahead and try…
Thank you, I appreciate your response.
Hi Ray, The page (site) you linked to doesn’t let me visit it (it probably prevents people from my country…
Hi, excellent info. I have a basic question, I want to convert my road bike with SRAM Rival brakes and…
Thanks! This was super helpful!
Thank you very much Ralja just wanted to make the front shifting as crisp as possible without going to a…
Hi John, The Yaw system was designed to remove the need for a trim function. Having said that, I haven’t…
Hi Relja just a question before I buy the part question.Saw the SRAM yaw system on a video and am…
Hi Roman, That’s a good question. A short answer: It is subjective, but the further away one goes from their…
How precise has the effective top tube length to be? How much can I correct using different stem lengths/heights/angles? What…
Thank you for the quick reply. My thinking with the shifting upgrade to more sprockets was to take advantage of…
Hi Joachim, As far as I know, Campagnolo have also altered their cable pull across brake/lever generations. However, it is…
Campagnolo isn’t mentioned much in this article. If I wanted to upgrade a road bike that has a 10-speed Shimano…
Hi Martin, As far as I know, 700 C is the synonym for the 622mm ETRTO size (only, the former…
Thanks very much for the article and video which are really helpful. I’ve been having a terrible time trying to…
Hi Chris, I believe not. I think RS700 is a “road” standard shifter, just designed for flat bars (so should…
I have a Shimano RS700, is it compatible with Shimano SAINT M820-SS ? Thanks
Thanks very much for the prompt and helpful reply! I’ll try it!
Hi Brian, Shimano compatible 7-speed shifters should work. These Microshift ones for example (the picture shows an 8-speed shifter, but…
Great article and video, Relja. I have a 1989 Trek 420 road bike, 3 x 7 speed with Shimano Sport…
Not possible to get the right answer. I need the distance from the top tube of a low step thru…
Hi Metin, Generally: Shimano Acera FC-M361 works with square taper bottom brackets. If your bottom bracket isn’t a square taper…
Hi Relja, I have a question, I have TruVativ FC-E350-A1 and this cranksets have a power spline and Square BB…
very well written!
This is super-useful info. Thank you from Canada for taking the time to share this.
Thanks again for your information. I have 2 comments. When trying to purchase a seatpost for an oversized seat-tube, I…
Thank you, fascinating. In your figures, I am surprised by the aerodynamic impacts from your ride “in the pack” -…
I have a bicycle from I believe 1976 and it does not have a 22.2 MM stem but smaller. I…
Hi Francesco, Deore M591 is a 9-speed series as far as I know. The FD should work, but the RD…
Hi Rick, I’ve explained the reasons for removing the crank arm length from the calculations in the 3rd chaper of…
First of all thanks for the great article. As far as you know, do a deore m591 have the same…
Why do you not mention crank length in these calculations, as far as torque and the human body? It has…
Good points. I agree. My reasoning: I think that chainstays see tension most of the time, except for the right…
Thank you for the feedback. I don’t find that information to be important when considering chain compatibility (though I think…