LZ’s Tech FAQ: Technical FAQ: Headset s

Posted in Uncategorized on September 19, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Headset spacer stack height – Headset spacers Dear Lennard, I have seen several references that suggest that 30mm of spacers below the stem is the maximum you should have for a full carbon fork steerer tube. I have seen others that say 40mm would be the maximum. What is your position on this matter? — Richard Dear Richard, Even though people want a blanket answer to this question, there is no way such an answer can be given because it d… http://ow.ly/Gz6L50iXtPf

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LZ’s Tech FAQ: Technical FAQ: Chain hop

Posted in Uncategorized on September 13, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Chain hops and grinding cogs – Dear Lennard, I have a SRAM GX 1X MTB setup with a 32t chainring and a big 42t in the back. Everything’s fine when I’m pedaling in the 42t cog, but when I backpedal, the chain drops a few gears down. This doesn’t happen when I’m in any other gear. Everything seems to be very smooth! I fiddled with the b-screw to get more space between the pulley and the 42t, but that doesn’t appear to do much. I’ve seen th… http://ow.ly/pY0650iH0lH

LZ’s Tech FAQ: Technical FAQ: Adapting

Posted in Uncategorized on September 5, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Adapting bigger cassettes, re-gluing tubulars, patching tubes – Dear Lennard, I have a 2016 Roubaix with Di2 derailleurs, 50/34T front and 11-28T rear. I’d like to go to a 34- or 36-tooth cassette to ease climbing on my aging knees. Which options will allow this?: Use existing rear derailleur and fiddle with B-screw Replace short cage with medium cage on rear derailleur Replace rear derailleur with RD-R8050-GS — Rob Dear Rob, The first … http://ow.ly/EwTj50ipSWn

LZ’s Tech FAQ: Technical FAQ: The ideal

Posted in Uncategorized on August 29, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: The ideal way to apply chain lube – Dear Lennard, The 2013 Velo report stated: “The chains were cleaned with an ultrasonic cleaner in odorless mineral spirits prior to testing, and then all three chains were immersed in a 100 F bath of each respective lube and run in the ultrasonic machine for five minutes.” The test was done very well, and using ultrasonic to get lubricants evenly applied makes sense! I know, of course, that test was n… http://ow.ly/xn7e50ijRuW

LZ’s Tech FAQ: Technical FAQ: Wheel flo

Posted in Uncategorized on August 22, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Wheel flop and patching inner tubes – More on wheel flop Dear Lennard, Your wheel flop formula in the Dutch bikes answer is confusing: “The amount of wheel flop is equal to the sine of the head angle (in radians) multiplied by the cosine of the head angle and by the fork trail.” Why mention radians? Is fork trail the same as trail? Or did you mean fork rake? — Michael Dear Michael, I mentioned radians because of the way I use the formul… http://ow.ly/C8KY50igxFD

LZ’s Tech FAQ: Technical FAQ: Brakes, t

Posted in Uncategorized on August 15, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Brakes, tubes, and Dutch bikes – Flat-mount and post-mount calipers Dear Lennard, I’ve recently been ogling the new Shimano road hydro shifter/brakes, but I’ve noticed the disc brake calipers are all flat-mount. This is a problem for me, as my ’cross bike is post-mount both front and rear. Are there post-mount brake calipers that work with the new 105/Ultegra/Dura-Ace hydro shifters? — Mark Dear Mark, Yes, it’s no problem to achieve wha… http://ow.ly/ePjr50idOkt

LZ’s Tech FAQ: Technical FAQ: Could aer

Posted in Uncategorized on July 18, 2018 by Nick Wigston

LZ’s Tech FAQ: Technical FAQ: Could aero brakes win a Tour sprint? – Clean front ends and drag Dear Lennard, In the finish-line photos of the sprint finishes of stages 2 and 4 in the Tour de France, it was notable to me that the riders who came in second (Sonny Colbrelli in stage 2) and third (André Greipel in stage 4), were riding bikes with exposed front brakes and cables, while the riders who finished just 1-2 feet ahead of them (Peter Sagan and Fernando Gaviria)… http://ow.ly/ji3z50i0Mxj

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