All Questions

0
votes
0answers
5 views

mid-drive groupset prospectives

Is the SRAM EX-1 my best hardware option to ensure my chain doesn't jump on a mid-drive in case I shift at the wrong time? I'm working on my technique but would like some assurance too that I'm not ...
0
votes
0answers
9 views

Rockshox recon completely locked

So i bought a second hand bike about a month ago with the rockshoz recon fork(100mm) Than suddenly ccouple weeks later it stopped working , completely locked out. And Every time the shock tries to ...
2
votes
1answer
14 views

How to bleed rear SRAM Force 1 brake

I'm having a hard time bleeding the rear brake of my Specialized Diverge. Following closely the instructions provided by SRAM (and other sources like GCN and other people from YouTube) only works for ...
0
votes
1answer
35 views

Why the vertical difference between the right-most point of TT and the left-most (union with ST) is not part of a geometry chart?

One of the things I often look to determine whether a bike fits a specific purpose is that distance mentioned in the title, that is, if you draw a line from the stem to the seat tube, and then you ...
0
votes
0answers
30 views

Do 2018's SRAM Guide R brakes have the same issues as older models?

Do 2018's SRAM Guide R brakes have any issues with temperature, brake stuck, piston stuck? Have SRAM fixed these problems of previous years? Official Guide R webpage
0
votes
0answers
41 views

Mountain bike fork upgrade [on hold]

What are the best fork features to look for regarding a 29-er non-boost mountain bike with qr-axles. Coil is preferred but air is ok. Is it worth it upgrading to a thru axle in the front? Is the ...
8
votes
4answers
3k views

Why are recumbent bicycles and velomobiles illegal in UCI bicycle racing?

As stated in the title. However, the "superman" position is also illegal, and the question applies to that as well. Motor racing will often lean on safety to explain why there are so many limitations ...
4
votes
2answers
299 views

How to access seat-post lever on the handlebar?

I would like to change the position of my seat-post lever but in order to do so, I have to untighten its screw. The problem is that I can't manage to access the screw, due to the presence of the hard ...
-2
votes
0answers
68 views

Need help identifying my bike and all I have is a serial number [on hold]

Ax938972 is the serial number and I need help looking it up. I just want to know what brand of bike it is from, and Google is making it so hard to find.
2
votes
0answers
81 views

Back wheel suddenly started “wiggling”

I bought recently a second hand bike for my daily rides, and it seemed in good shape. I rode it for more than a month without any problems, but recently had issues with it and had to get it fixed (...
0
votes
1answer
58 views

Can I lace a XTR rear hub with thirty two spokes from a Valiant asymmetrical rim to a thirty two hole Magic regular rim?

Can I lace a XTR rear hub with thirty two spokes from a Valiant asymmetrical rim to a thirty two hole Magic regular rim?
3
votes
0answers
31 views

What do I do about a hydraulic disk brake piston that won't retract correctly?

My dual piston Shimano XT brakes are acting strange... One piston won't return to the right place, so one brake pad can be rubbing all the time, which doesn't let my wheel spin freely... I have done ...
1
vote
2answers
125 views

Hose Clamp Salsa Watter Bottle Cage to Rigid Fork with No Sliding (Gravel)

Last year, I used some plastic clamps I bought from a LBS to mount two stainless steel Salsa water bottle cages to my rigid fork as shown in this picture: Unfortunately, the plastic clamps wouldn't ...
0
votes
1answer
62 views

700x25c tubes inside 700x23c tyre

I'm riding on 700x23c tyres with 700x23c tubes, road bike. I've obtained a box of 700x25c tubes. While I'm taking the approach that it's always best to fit the correct size, I'd like to either use, ...
1
vote
3answers
66 views

Mounting Stiff Metal Fender with Strive Bolts

I am trying to mount a metal fender on my bike that was formerly a cross bike. I explicitly moved to this one (used) because the "crossy", plastic ones tend to slip to one side or another, and are not ...
2
votes
1answer
105 views

What is this fender part called and where do I get one?

My bike came with this plastic bracket thing that holds the fender to the fork arch. It's very convenient and now I want to buy another one. Unfortunately, I cannot find this part anywhere online, and ...
8
votes
3answers
1k views

Strategies against getting blinded by oncoming cars

When I ride on a bike path alongside an unlit road in the dark, I find myself blinded by the lights of oncoming cars, even when their lights are dimmed. This is even more true if the bike path is on ...
0
votes
0answers
48 views

Can I use a 26x2.0 tyre? [duplicate]

Hello first time posting here! I am not a mtb expert so I'm sorry for the noob question here :D I have a beginner mtb which is 5 years old and I will have to change my tyres as they have worn out. My ...
1
vote
0answers
58 views

chain / cassette / chainrings replacement ratios - how often to you usually replace cassettes & chainrings per number of replaced chains?

I'm looking to get other riders experiences with how often cassettes and chainrings usually have to be replaced per the number of chain replacements. On my 2 road bikes I usually find roughly the ...
1
vote
1answer
40 views

FOX FLOAT CTD Evolution oil leak :(

I have a FOX FLOAT CTD Evolution LV 184x44mm, which worked fine in the summer, afther the cold weather arrived, and I started to ride under 15C, it started to leak some oil. It was pretty nasty, but I ...
4
votes
2answers
169 views

Are disc brake rotors interchangeable between brands?

I have Tektro HD-R310 brakes, with center lock rims, using the new and only center lock rotors from Tektro TR160-35 Well after 2 months of driving in winter, i already notice some rust on the rotors (...
1
vote
0answers
29 views

Stiff, hard to use poplock, rockshox recon silver

My bike is equipped with front suspension Rockshox Recon Silver with PopLock remote lock. The use of that control is VERY stiff and HARD to lock (very easy to unlock though). Every time I need to ...
2
votes
2answers
75 views

How would I go about getting this Zefal pump to work with a Schrader valve?

I have a seemingly well-functioning Zefal pump that I'm unable to identify that has a head on that I'm also unable to identify (maybe it's just Presta?). All my family's bikes use Schrader valves. ...
3
votes
2answers
58 views

Can I convert Kiddicarrier jogger to a bike trailer?

Kiddiecarrier jogger/stroller. Any tips on how to convert/attach to a bike?
2
votes
1answer
65 views

Is it safe to bolt my single-speed chainring to the other side of the crank?

Background: I converted a 21-speed bicycle to single-speed by removing the derailleurs and installing a single-speed freewheel and crankset. The chainline is no longer straight, and I would like to ...
0
votes
1answer
91 views

New to cycling, wrist pain while cycling [duplicate]

Started cycling last week. While riding cycle I am feeling like falling down on the bar, wrist gets pain, is it normal (my height is 5.6 and MTB cycle size is 18.5)?
4
votes
3answers
97 views

I replaced my rear hub, but I'm not sure about how to attach the derailleur

I'm new to working on bikes and have been unable to find an answer via the internet, which, too be honest, is probably really simple. I got a bike just for riding around the city that had a cheap hub ...
2
votes
0answers
32 views

Wear on an IGH by pre-selecting gear under power

I have a bike with an 11 speed alfine IGH in the rear wheel. It works fine, and I am comfortable riding it. When accelerating hard or sprinting for some reason, I've noticed its possible to change ...
-1
votes
0answers
35 views

I broke my brake lever [closed]

I broke my brake lever and was wondering if anyone knew anything about it? Does anyone know? I tried fixing it but still not working and taken it to a bike mechanic and they couldn’t do anything ...
7
votes
2answers
512 views

Understanding e-bike power/torque

In the UK e-bikes are currently limited to a maximum of 250W assistance if you wish to use them on public roads. However, it seems that the motors do vary in terms of the available torque - from ...
10
votes
13answers
2k views

Touring vs race bike [on hold]

I am Fabrizio, completely new in this forum full of experts, considering myself somebody who wants to take his very first steps at biking on the roads. I started to live in the Netherlands since 2 ...
2
votes
1answer
152 views

Replacement fork has forked up my bike [on hold]

A little while ago, a year or so, I changed the cheapish steel fork on my commuter for a cheapish carbon bladed fork I had hanging around. The headset on the bike is a little non-standard but the shop ...
5
votes
1answer
68 views

Changing my crank on a track bike and it wont turn

I bought a new crank for my bike, when fitted tight the crank is stiff to turn as I think it is rubbing against the bottom bracket housing. Any advice on what to do, have I bought the wrong crank?
1
vote
1answer
44 views

Vulcanizing cement question? [on hold]

I was sent vulcanizing cement instead of rubber glue. I need a strong glue for LED strip lights. Everywhere I go looking for vulcanizing cement answers leads to tires, but not what all else it can be ...
2
votes
2answers
94 views

Can wearing padded cycling shorts versus regular shorts affect the adjustments during a bike fit?

Can wearing padded cycling shorts versus regular shorts affect the adjustments during a bike fit? My bike fitter who uses the Retul system requires tight fitting shorts so that the LED markers don't ...
2
votes
2answers
56 views

New rear wheel to 8-speed Shimano Citybike, don't know what to look for

My current rear wheel wont rotate around the hub anymore, so I need a replacement. I don't know what to look for, but I have this info: Bike is an Avenue Airbase, dont know how old, but more than 3 ...
0
votes
0answers
34 views

How many miles will one set of drum brakes last?

I am looking for a complete maintenance schedule for drum brakes so I can find out how long they last. Adjustment Pad replacement Hub replacement And if that length of time is similar with coaster ...
2
votes
1answer
54 views

is the dry blue manufacturer-applied threadlocker the “stick” version?

I bought some blue threadlocker in a little squeeze tube, and it is a very runny and drippy liquid. Is the substance that comes pre-applied to screws and is dry to the touch just the "stick" version ...
-2
votes
1answer
83 views

Identifying Specialized bike

I need help identifying the specs of this Specialized bike. The frame is carbon fiber and has a Diverge logo, it's a mens bike. Bought mid last year. The tires were thinner track tires but changed for ...
0
votes
0answers
37 views

Best hydraulic brakes under £100 [closed]

I have recently just had a crash on my bike and was asking to see if anyone had any good ideas of which brakes I should get? as mine has snapped and can’t be fixed
0
votes
1answer
58 views

Help Identifying BMX

My old bike which I inherited from my sister back in the 80s. Would love to do this up for my children, maybe get it sandblasted and resprayed. But would love to find the replacement stickers and ...
3
votes
1answer
63 views

Older Shimano Road Brake Levers vs Newer Ones Quality (SLR vs Super SLR)

I'm owner of relatively new (non STI) levers of low Sora/Tiagra level, they are Shimano bl-r400 (Super SLR). Now i'm thinking of replacing them with pretty Dura Ace BL-7402 (SLR). These come from ...
2
votes
1answer
124 views

Rear wheel touch frame during off saddle sprint

bike: Cervelo S2 Photo wheels: Mavic Cosmic Pro Carbon (wheel is true) tyres: Continental Grand Prix 4000S II 23mm Problem is that during off saddle sprint my rear tyre touch the frame and makes ...
19
votes
1answer
4k views

Why can't a child bike seat be mounted on a carbon frame?

I have bought a BoBike junior bike seat for the rear of my bike which is a Cargo bike but the seat instruction says it can’t be mounted on carbon frames, baffles me as to why?
2
votes
2answers
74 views

How big are pull ratios in Shimano 9-speed front derailleurs in MTB and road bikes?

I am asking about 3x9-speed front derailleurs. The background this time is longer than the question -- I have a Sora based gravel bike and now I try to marry road shifter with MTB front derailleur ...
2
votes
2answers
100 views

Heavier riders on bike trainers?

I'm 300-350 pounds (136-158 kg). Is this too heavy for trainers such as a Tacx Neo or Wahoo Kickr? Their specifications say 250-275 pounds, so I'm interested in options for heavier riders.
1
vote
0answers
59 views

need help what to do? [duplicate]

I have 3 old bikes all have been in a shed out of the weather for about 20 to 25 years. tires are rotted. on has a front fork suspension not working. #1 is a Trex zx 6500 #2 Giant Ricon girls bike and ...
4
votes
3answers
220 views

How much of a difference would shifting from a (24/34/44, 14x28) to a (28/38/48, 11x34) configuration make when going downhill?

I currently have a Proton MTB with a 24/34/44 crankset and a 14-28 cassette. I have found the configuration to be lacking when going downhill: The front chain ring doesn't feel stiff enough on the ...
4
votes
2answers
148 views

Why aren’t there more tricycles with rear disk brakes (between the two rear wheels)

Just curious if anyone has seen these before, it would be a rare bird. I'm looking for a trike where the mount for the rear disk brake is mid-axle between the two rear wheels. What are the technical ...
0
votes
1answer
65 views

Bosch 400Wh battery first led only is flashing and refuses to charge [duplicate]

On a long trip with a lot of wind my 400Wh battery went empty.When i tried to charge it at home it refuses to charge. The first of the five leds is flashing. Strange because in the manual is written 1,...

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