All Questions

2
votes
1answer
155 views

Replacement fork has forked up my bike [closed]

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
73 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
50 views

Vulcanizing cement question? [closed]

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
105 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
59 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 ...
-1
votes
0answers
35 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
57 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
129 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
1answer
61 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
82 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
154 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
85 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 ...
3
votes
2answers
105 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
60 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
243 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
158 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
75 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,...
1
vote
1answer
54 views

Where to find replacement Clarks Skeletal right brake? [closed]

I had completely fixed a stuck piston, when I bloody managed to perfectly snap a reservoir screw so I have no chance of removing it. I’ve had a look online, but I can’t find anywhere selling either ...
0
votes
0answers
83 views

Folding electrical tape around the bar tape as it reaches the middle of the handlebars

So.... I saw a bike parked up at work with drop bars and bar tape that looked interesting. As the bar tape reached the middle of the handlebars rather than wrapping electrical tape around the end to ...
0
votes
1answer
73 views

Shimano downtube shifters 3x7 speed

I have an old road bike with 3x7 speed and STI levers. I need to downgrade it because I can't reach the levers due to my small hands. What downtube shifters can I buy to that will work with my ...
5
votes
2answers
115 views

Tubeless vs Tubeless ready

I've decided to upgrade to road tubeless. Hutchinson sells both "Tubeless" and "Tubeless Ready" tires. According to Hutchinson' website, Tubeless Ready means that (in addition to having a special bead)...
1
vote
0answers
51 views

Replace Viner Settanta seat post securing wedge

My seat post wedge has been removed. There seems to be loads of different styles and shapes depending on the make and model of frame. Does anybody know if any other makes will fit it as having trouble ...
5
votes
2answers
119 views

Tubeless Tyre Repair

Last year I got a puncture in my tubeless tyre from a chunk of glass during a multi-day 500 mile ride (see photo below). The sealant did its job quickly and efficiently, and the seal has held without ...
2
votes
1answer
77 views

Is 700c 25/32 iner tubes the same as 700c 18/25?

I'm trying to replace inner tubes on my bike but I got ones that do not match the one that I am taking out of a wheel.
3
votes
1answer
89 views

How wide is a 2.2" MTB tire?

I brought my MTB into reputable local bike shop to swap out a worn 5 year old tire. Front and back had 2.2" tires that were actually 2.2" wide. Mechanic says he has a new tire of the same kind ("...
2
votes
1answer
91 views

Crank power meter incompatible with my bottom bracket

I have received a 4iiii crank power meter 170mm length that I can't install on my Merida trainer bike because it has square taper bottom bracket. What would be the cheapest way to have it installed? ...
1
vote
2answers
144 views

Is it possible that the gears switched from left to right?

I'm 100% sure that my gear levers on the right side are for my front gears and the ones on the left side are for changing the rear gears. After a muddy ride today it seemed that this changed. I was ...
2
votes
2answers
74 views

Swap Shimano/SRAM freehub for Campagnolo

Through my work I am able to get a set of freewheels pretty cheap (less than 100€). I know they are not super special but they are still an upgrade to my current ones. Here are the wheels: https://...
3
votes
1answer
69 views

Hole in fork crown welding seam

Some time ago I noticed a clicking noise somewhere in headset area. Noise appears under pressure, also it clicks when I tightening the headset. First thought was that problem is with headset bearings, ...
8
votes
2answers
4k views

Is it safe to use a bike tire that was on a wheel that got tacod?

My bike recently got into a crash (I was not on it) and both wheels were taco'd. Is it safe to take the tires off and use them on a different wheel? What could go wrong and what should I look out for?
-1
votes
1answer
96 views

Who made this bike [closed]

I can't find a manufacturer anywhere on the web
6
votes
3answers
1k views

What is the drag / power lost to a safety flag?

I have a recumbent bike that has a safety flag on the top of a thin pole, so it flutters around higher than and after my head. How much power am I losing to this flag that could be used to power my ...
1
vote
2answers
97 views

Rear wheel wobbles with periodic sound

My road bike currently has a nagging wobble in its rear wheel that I've been unable to determine the source of. I probably would not have noticed this had it not been for an unusual (and annoying) ...
2
votes
1answer
90 views

R9100 chainring and R8000 crankset

Is there compatibility between R8000 crankset and R9100 chainring? I would like to mount a 54 ring on an R8000 DI2 crankset.
1
vote
1answer
62 views

What type of lever of a hydraulic rim brake is this?

What is the manufacturer and the model of this brake lever of a hydraulic rim brake? I am puzzled because it's connected to a Magura hydraulic rim brake caliper, and there is a 11 on it - so I always ...
2
votes
1answer
81 views

Vintage Power King valuation? [closed]

I recently got this bike for very cheap... cleaning it up and will sell it since I have no use for it. No idea what to ask for it though. Anyone know anything about these? Rear hub is an internal 3 ...
1
vote
2answers
69 views

Belt drive, rear sprocket can move sideways

I have (RieseMüller/Bosch/Nuvinci/center track) and the rear sprocket can move slightly sideways. Is this on purpose or is there anything loose?
20
votes
6answers
7k views

Should unconventional colors be avoided for lighting?

Red/amber lights in the rear of the vehicle, white lights, in front of it: that is the good old convention and certainly switching their places is a bad idea. A quick search, however, shows other ...
2
votes
1answer
81 views

Identify a 70's road frameset

I'm at a loss on the manufacturer of this frameset, any ideas are appreciated. Its previous owner claims it is 50+ years old and was bought in Chicago 46 years ago. Bike has Nervar Star crankset, ...
0
votes
2answers
81 views

Disc brake rotor wear limit

What is the wear limit for a disk rotor?
-5
votes
2answers
80 views

What are all the ways in which E-Bikes can make MTB areas worse? [closed]

I want to pre-emptively say I am asking this as a devil's advocate. So, now that that's out of the way - Let's see if we can list all of the reasons given for why E-Bikes should be banned from ...
0
votes
1answer
39 views

Sigma 14.16 STS screen barely visible

Around 4 months ago, I bought a Sigma 14.16 STS computer for my bike. I rode around 2500 km since then. Everything work perfectly until yesterday, when the computer just (almost) stopped displaying. ...
1
vote
0answers
51 views

Custom dutch bike project [closed]

Here I am a Kiwi in the Netherlands with a little dutch bike project underway. The internal of the steerer tube is 19.3mm (give or take) so I am unable to put a 1" - 1" 1/4 (32mm Handlebar diameter) ...
4
votes
2answers
675 views

Freehub has notches worn into it: is it OK?

I bought a pair of second-hand wheels, and after removing cassette noticed these notches on the freehub. Is the freehub still in OK condition?
2
votes
0answers
50 views

SRAM eTap rear derailleur chain drop issue

I’m having an issue with my chain falling off the lower pulley wheel when (1) I hit a significant bump or (2) shift from large ring to small ring. But only in cogs 6, 7, 8. Any suggestions? I’ve ...
4
votes
1answer
82 views

Shimano chainring compatibility (7400 vs. 7700)?

I have a 2003-era 9-speed Dura-Ace drivetrain, FC-7700 crankset (cranks are 175mm; rings are B-type, 53/39, 130 BCD). I recently came across a brand new 7400-series B-type 53t chainring. Does anyone ...
1
vote
0answers
43 views

Rockshox Pike 351 closest mainline model?

I'm looking at getting some second-hand Rockshox Pike 351 forks that will need some refurbish work doing on them. What mainline model of Rockshox would I be looking at for replacement parts (I think ...
1
vote
1answer
36 views

Shimano Tiagra 4700 10 speed lever only shifting 9 gears

I have a Shimano Tiagra 4700 10 speed group set. I can only get 9 gears working - the shifting is smooth with no jumps but one gear is missing, either at the top or bottom depending how I setup the ...
1
vote
1answer
82 views

Pros and cons of long and short derailleur cage?

I'm thinking of buying a new derailleur in the future, but I don't know what type of derailleur to buy, there's long and short cage derailleurs but is there any differences? I'm not sure if this ...

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