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Tiagra 4700 Compatible Chainrings

I'm looking for some replacement chainrings for a Shimano Tiagra 4700 50.34T 10 speed. I'd like to keep the same ratio and same or similar tier of parts. So far I haven't found any close matches by ...
3
votes
1answer
25 views

Repair Tektro HD-M275 brake lever

My girlfriend's son recently acquired a pre-owned Scott Aspect 760 for Christmas (2021 model) - essentially brand-new and ridden once or twice, if at all. We noticed the other day that something ...
0
votes
1answer
16 views

Rear derailleur shifting backlash

I have a problem with my rear derailleur, which I cannot find a solution to. The shifter has some kind of backlash, when I shift up it all goes perfect, same as if I go down. But when I try to turn ...
0
votes
0answers
17 views

question is can I put 27.5 rims/tires in place of the 29ers

I currently have a motobecane 29er, and it is to tall and beyond time i can exchance it, question is can I put 27.5 rims/tires in place of the 29ers
1
vote
1answer
23 views

Problem bleeding Shimano XT brakes

I have a problem bleeding Shimano XT brakes: The oil can come down if I open the system at the bottom, and the oil drips down. But once I connect the syringe, put the little plastic cup screws on the ...
0
votes
1answer
20 views

How to adjust Shimano M315 disc brakes?

I have a Cube Nature Pro (2017) bike and the brake lever for the rear brake has too much travel and braking is less effective than usual. The pads don't look too worn as there's over 1.5mm on each, so ...
9
votes
4answers
824 views

Why long haul touring bikes are sold with 9-speed drivetrains?

Following up on this question, I had a look on the specs of 'long haul touring bikes', such as the Trek 520, Salsa Marrakesh, Surly Disc Trucker. On thing that surprised me was that they are all ...
5
votes
3answers
1k views

To what extent should I insulate an electric bike battery during winter?

For temperatures between 0 F (-18 C) and 32 F (0 C), to what extent, if at all, should I insulate electric bicycle batteries? I have read that they do not like temperature extremes. Should I wrap a ...
8
votes
3answers
1k views

What are the disadvantages of bicycle saddles with cut-outs?

I'm thinking about buying a new saddle and I have seen that you can still buy high-end saddles without any cut-out / relief channel. I was always advised that I should go for the latter ones since ...
6
votes
2answers
313 views

Tool/proceedure to remove Shimano direct mount rim brake bearings (Ultegra in this case)

Looking for some advice on what tool I need/the process to remove the pivot bearings from the Shimano Ultegra direct mount rim brakes. It looks like I'll need a hook wrench(?) to get at the rear ...
2
votes
2answers
176 views

Cutting back seatpost binder slot

I've got a tandem with brazed on seatpost binder ears. The slot between them is so narrow that I can't clamp the seatpost with sufficient force: with the two sides bottomed out, the stoker can apply ...
1
vote
2answers
470 views

Squelching noise from back wheel

My bike is making a weird squelching sound from the back wheel. Any idea what it might be? I made a video of the sound, it's at this link: https://drive.google.com/file/d/1zt_DAa2avX9bhJ4E-...
3
votes
2answers
617 views

Help Identify This Bike

This bike was given to me from a elderly lady who no longer wished to own it. Other than a columbia I have no idea what year or model. There seems to be no serial numbers from which I can see on the ...
3
votes
1answer
31 views

Overheating: Are Latex inner tubes on rim brake carbon wheels safe?

Currently I'm using standard butyl inner tubes on my clincher carbon wheels. My bike uses rim brakes, and searching on internet I have found that carbon rims are not great for dissipating heat: ...
4
votes
1answer
50 views

Front derailleur rub chain when on innermost/smallest cog and rear derailleur is on innermost/largest cog

Front derailleur rub chain when on innermost/smallest cog and rear derailleur is on innermost/largest cog. I have watched Park tools guide to adjust both derailleurs and tuned the gears to make them ...
5
votes
2answers
79 views

How do I adjust a Shimano RD-M6000 properly?

I've got 2 new fat Bikes (Framed Minnesota) with Shimano RD-M6000 rear derailleurs on them. (And another with an RD-M4120.) They're all using Shimano Deore triggers from the same line. I am having a ...
3
votes
1answer
50 views

Shimano Ultegra shifters 8020 bottom plastic cover screw. Where to get it?

Does anyone know the specs of the screw of part #7? Or where to get it in US? It unscrewed and got lost. I think I might find something similar not bike-specific.
22
votes
11answers
4k views

What aspects contribute most to me being slow on this bike?

So this is my bike (don't laugh). I've had it for about 20 years, still rolls. Lately I've been seeing on Strava or Garmin Connect that I'm just too damn slow vs. everyone else and I don't think the ...
11
votes
4answers
2k views

After I lubricate my chain, I hear a gritty, sandy crunching sound coming from the chain and chainring. What am I doing wrong?

I tend to lubricate my chain about every 150-200 miles based on the conventional wisdom and general guidance I've read and heard. I have been using Rock N Roll Gold lube for some time, as it's been ...
7
votes
2answers
460 views

Touring bike with good support network in India

I am planning to tour India. And I have heard many of the US branded bikes don't have support in Tier-2 cities in India. I am worried, if I am struck with out being able to get any spares or a good ...
3
votes
2answers
375 views

What Shimano microspline rear wheel hub would fit my 26in Mavic Cross ride wheels?

Title. I purchased a new Deore 1x12 groupset without realising I would need to change the rear hub to fit the new microspline Shimano introduced a couple of years ago. What would the Shimano rear ...
32
votes
18answers
29k views

Why do we rarely see recumbents and almost never see velomobiles?

Recumbent bicycles are more efficient than ordinary upright bicycles, and velomobiles are even more efficient. Then why do we see them so rarely on the road? Is it because they are expensive, or are ...
3
votes
3answers
2k views

Freehub body wiggles

This is a OEM wheel from a 2014 Salsa El Mariachi Single Speed, called a "Salsa 2, Singlespeed" hub, which I believe is made by Formula. The freehub body "wiggles" (the thing that my fingers are ...
12
votes
10answers
6k views

Why do they not sell bicycles with four wheels?

In the summertime, and Fall/Autumn, and Spring, my normal, two-wheeled bicycle works perfectly well. But then there's Winter. What is normally friendly, non-slippery asphalt and grainy forest paths ...
4
votes
8answers
2k views

From the perspective of a cyclist, what is a common way to hydrate throughout the day?

A couple of nights ago, I went for a ride. My destination was only about 4 miles away from my house, and it was a downhill journey. Of course, I had to ride back up many hills to get back home, and ...
6
votes
3answers
778 views

What is the difference between hand pumps for road bikes and mountain bikes?

I realise that hand pumps seem to be road or MTB specific, but what is the difference between these pumps? I am looking for one to pump up my road and my mountain bike.
1
vote
1answer
37 views

Sram Rival 11 speed + GX 10 speed dérailleur

Do you know if I can use Sram Rival 11 speed shifyers with a GX 10 speed dérailleur and if it will shift properly? I am planning to use an 11speed 11-42 cassette. Of course à grave monster project 👹😉...
1
vote
0answers
48 views

Magura mt5- non stop micro bubbles coming out while bleeding

I have a problem bleeding my Magura MT5 brakes. I used two 50-ml syringes and the EZ MTB bleed kit. I pushed fluid from the syringe attached to the caliper to the top (at the lever) and back again. I ...
1
vote
1answer
38 views

How do I center a basket attachment that's sitting between the stem and head tube

I messed up while building my daughter's bike and started turning this basket attachment around, until I realized I am looking at it from the wrong side. Now it's sitting at an angle. What tool ...
2
votes
1answer
207 views

Disc brake mount/adapter bolt length

My bike's frameset has IS mounts. The mounts are 9.6mm thick. I bought a pair of IS to post mount adapters but they don't come with bolts. The adapters are 11mm thick. How long should the bolts be? ...
3
votes
1answer
82 views

What material is Shimano Brake Caliper Bolt?

Out of curiosity, would anyone know what material Shimano uses for Brake Caliper Mounting bolts? Would Stainless Steel 316 be sufficient in strength if I needed longer bolts? The particular bolt I am ...
4
votes
1answer
117 views

How to lower a road bike caliper

I have a beautiful titanium frame made by Van Nicholas. Unfortunately it uses long reach rim brake calipers front and rear (branded Van Nicholas, but I would say tektro made). They are pretty ugly and ...
4
votes
5answers
781 views

Chain is jumping regularly on every cog at every speed?

I have a new chain on a used bike that has been working perfectly for 500km and the chain has started jumping a cog on every different speed. It definitely feels like a cog and chain slipping, the ...
6
votes
6answers
685 views

Reflective tape for polyester rain jacket

I have a GORE rain jacket that's 100% polyester, and black. I'm looking around at different options for reflective tape and stickers to brighten it up a bit. I think going with stickers are probably ...
1
vote
1answer
242 views

Confirming: Bike tyres do not have date of manufacture stamped

Car tire/tyre manufacturers stamp the date of manufacture on the tyre. The idea is apparently that the rubber starts to deteriorate from that date, regardless of whether it has been installed. After a ...
0
votes
1answer
72 views

What's the difference between a Shimano RD-M6000 and an RD-M4120?

I ordered some family bikes recently, and all were supposed to come specced with RD-M6000 medium cage rear derailleurs. The first one out of the box has an RD-M4120, which is a cheaper model, as far ...
6
votes
2answers
1k views

What is it called when a wheel has a long metal wall on its circumference?

Some bicycle wheel have a tall metal "wall" along the perimeter of the wheel (here, the wall is blue.) Other wheels don't have this: the distance between the end of the spoke and the tire is ...
10
votes
5answers
4k views

Using a fan while riding indoors, if my main goal is weight loss?

I'm riding indoor (zwift), and apparently when I don't use fan, I sweat much more. Does that mean I lose more weight -> if this is my main goal then I should NOT use a fan?
6
votes
1answer
480 views

Will my mix-and-match drivetrain work?

I'm currently assembling a 3x9 speed commuter bike with the following groupset details: Crank: Shimano Tourney TY501 FD: Shimano Tourney TY510 RD: Shimano Altus M2000 Chain: Shimano 9 speed Sprocket: ...
1
vote
2answers
87 views

Upgrade bottom bracket

I want to upgrade my bottom bracket (square taper 68x113 threaded) to Shimano hollowtech and fit a new triple crankset. My gears are 3x10 so will my front gears still work with the new set up. What ...
3
votes
2answers
525 views

How does a Schrader valve work

So I have a new bicycle which has a Schrader valve on it. So I was wondering how does a Schrader valve actually work , the anatomy of it etc. The best I was able to find was something like this: But ...
1
vote
1answer
48 views

Adhesive light mount

I would like to attach a rear light to a hard plastic carrier on the back of my bike. No place to hook or tie. Is there an adhesive mount available to attach the light to?
4
votes
4answers
551 views

What is the smallest collection of bikes to maintain for these three types of snowed over paths?

Selecting the kind of bike to ride depends perhaps a bit too much on context—how much snow, whether and how quickly the snow is plowed, etc. Last winter I've taken the road bike on trails soon after ...
43
votes
12answers
153k views

Different kinds of Handlebars

What different kinds of bike handle bars are there? All kinds welcome, the common and the nameless. If possible include the pros and cons of the bar One bar per post
23
votes
1answer
7k views

The chemistry of mixing sealants

It's become a fairly common occurrence in shops to be faced with a tubeless wheel that was doing fine, slowly started having issues, and hasn't had a sealant re-up in a while or ever, but what sealant ...
3
votes
1answer
74 views

Glue in nipple seat in brand new rim?

I've just laced up a new DT Swiss R470 rim and noticed that one of the nipples next to the rim joint isn't protruding as much from the rim as the others. I looked in from the outside and noticed that ...
0
votes
3answers
183 views

How could hydraulic disc brakes make sense on MTBs and gravel bikes?

This How To Clean Hydraulic Brake Pistons video (Park Tool's Tech Tuesday #104) shows how dust particles can interfere with the proper functioning of hydraulic pistons. Disc brakes have been adopted ...
-1
votes
0answers
59 views

Best MTB in my budget [closed]

I need a mountain bike with 26" wheels for under 1200 aud. I'm not spending more than that because it will only last me 2 to 3 years as I am a minor. Alternatively, a 27.5" wheels bike with ...
3
votes
4answers
644 views

How to run full length cable housing to front mech on a frame without cable stops?

I have an All-City Space Horse frame that has cable guides for full length housing where you use zip ties to secure the housing. But there are no traditional cable stops. The housing runs from the ...
8
votes
7answers
2k views

Can you tell me what the name of this bike is?

This is my bike from the 1970's and now 49 years later I would love to start looking for another one. I do not know the brand. Can anyone help?

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