8
votes
2answers
709 views

What is this metal bar parallel to the frame?

I saw this at work the other day and I was completely baffled. This bicycle has an additional, adjustable metal bar that runs parallel to the upper part of the frame, between the seat and the ...
10
votes
7answers
4k views

Is it realistic to fuel a long ride with NO sugar?

On a 6 hr. ride, I will burn around 4,800 cals. Assuming I start the ride fully carb loaded with around 1,500 cals in me, that means I will have to consume an additional 3,300 cals over the 6 hours, ...
0
votes
0answers
52 views

Disc brake lines quite long [duplicate]

Currently building a new mountain bike. I'm fairly bike savvy and have built quite a few bikes over the years, but mainly road bikes. I have installed/fitted a new Shimano slx group set and the ...
0
votes
1answer
110 views

My Gears Are not Shifting Well

my gears are not shifting well. i can only shift from 1st to 2nd...i don't know what is the problem i have shimano revoshift gear enter image description here here are some images
0
votes
1answer
99 views

SR Suntour XCM v3 forks Headset

Currently building a new mountain bike and for the time being I'm using the old forks until I buy some new ones. My question is how do I find out what type of headset I need? Because from my ...
2
votes
2answers
134 views

brand new fixie, different sized dropouts - send back?

i recently purchased a cheap fixie bike on ebay, brand new. it arrived today and looks great, but when i tried to attach the front wheel i realised that the right dropout is slightly (1mm) larger than ...
2
votes
4answers
181 views

Choosing a tool to take off the front cassette

My bicycle is Merida Crossway MD 40. It uses Shimano Altus derailleurs. The front cassette looks like this: I measured the central circular element, that must be holding the whole construction. It ...
1
vote
1answer
71 views

What should I check with set up of a tandem?

Particularly with reference to hired tandems, or when you're first setting one up. A bit of context: I hired a tandem today and went for a ride with my wife. I've been riding for about 20 years, she ...
2
votes
2answers
203 views

Are folding bikes less efficient than full sized bikes?

I've recently been touring with my Birdy folder, and people constantly ask me if it's hard work to tour on a folding bike. Compared to my normal sized bike (which has the same gearing, 8-speed ...
5
votes
1answer
199 views

How to select gearing for descent?

For riding on level surface one should strive for high cadence. However, what is the best solution when descending over rough terrain? On one hand, because the legs are better suspension when the ...
2
votes
1answer
73 views

Unknown shifter mount

This screw goes thru the frame (downtube) to hold two shimano 7speed (indexed) shifters. Apparently, one of the bolts is screwed and needs to be replaced. Problem is that the guy who owns the bike ...
0
votes
0answers
76 views

Why the solid 12mm rear axle?

Recent years saw the introduction of hollow axles, as the pipe is the stiffest construction for it's weight for loads expected on an axle. And now the industry is introducing the 12mm solid rear ...
1
vote
2answers
145 views

how to translate MTB wheel specifications?

I am looking for a pair of wheels for a MTB build project, but I am lost when I read the specifications for wheel sets. What I am looking for is a pair of wheels with a 9mm rear axle diameter and a ...
0
votes
1answer
66 views

How to install brakes with clamps that are too tight

I recently picked up a set of Avid DB1's and put them on my bike, but it was a bear to get them on. For background, they've got a split clamp that is similar to a seat tube where simple compression ...
1
vote
2answers
141 views

How to select a cyclocross bike at around £800 [closed]

Currently I have a GT mountain bike which which I use off-roads and toepaths just for recreational cycling at the weekends. I am looking at buying a cyclocross bike so that I can still do off-roads ...
-1
votes
2answers
85 views

Looking for advice on upgrading

I have a Specialized Rockhopper SL. It currently has the Rock Shox Dart 3 front shocks and the Shimano HG-50 chain/crank set. I want to upgrade it cause when I hit that top gear and I'm going all out ...
3
votes
1answer
101 views

Quick Release Rack with Horizontal Dropouts

I own a 1980s Panasonic (steel) road bike without eyelets for a rack or fenders, and I'd like to add a rack. The seat stays and chain stays on this bike are a bit thinner than I'd be comfortable to ...
1
vote
2answers
102 views

BB Lockring won't completely tighten

I am trying to put the lockring back on my BB after adjusting it to reduce the play, but I am unable to full tighten it. I can hand tighten the lockring, but as soon as I try to use my hook spanner to ...
1
vote
2answers
120 views

Front wheel bent

I left my bike in a shed, probably someone hit it, it fell and now the front wheel is bent. Not too bent, but when riding it oscillates with about 1 cm. Of course, this is messing with the brakes, but ...
0
votes
1answer
65 views

Outer chainring with two sizes

I see outer 130 BCD chainrings with 52T/39T. Why the the 39T in the label? How does the outer care or know what the inner ring is? What would be different about 52T/42T? Does the 39T care what ...
0
votes
1answer
134 views

Are new Shimano shifters compatible with old 600 Arabesque derailleurs?

Does anyone know if I can use new gear shifters, especially integrated road bike shifters, with vintage a Shimano 600 Arabesque rear derailleur? Will the pull ratio of the shifter and derailleur ...
2
votes
2answers
115 views

Why is it important to keep equal number of turns when building a wheel?

My first wheelset build here. I am following Sheldon and this guy. They both stress very much to tighten the nipples to an equal length, for example just as the spoke threads stop showing, and the ...
6
votes
2answers
305 views

Tips for having partner drive support.

I am hoping to get some tips and suggestions for having a partner drive support for long rides (training or touring). Is it best to plan spots that they will meet you and can get to your location of ...
2
votes
1answer
89 views

Gearing on drivetrains

I am running a tiagra compact 50/34t front with a sora 12/32t rear, I am still finding the long steep hills a problem, is there a alternative available without going tripple. IE lower front chain ...
4
votes
2answers
117 views

Is there a way to merge tracks within a GPX file?

I have GPX files for local MTB riding areas. In each area picture several connected loops composed of between say 6 and 12 named trails. In my GPX files all of the trails are individual tracks. Its ...
1
vote
2answers
217 views

Is it normal for the chain to slip in an 'extreme' gear?

My bike's recently been in for a service so afterwards I checked that all the gears are shifting and working properly. As part of my testing I put some power through the cranks in the photographed ...
0
votes
3answers
312 views

Difference between road & mountain drivetrain

Basically MTB and road bikes have different brand parts (like deore / XT; Sora / Utegra etc). What are the main differences between the 2 types, that will make it incompatible? Are there things ...
0
votes
1answer
78 views

Buying mudguard and pannier together vs separately

I need to get new fenders/mudguards, and I also need to get a pannier rack. As I understand it, these can sometimes be bought as one unit, they can obviously be bought separately, and I am not sure ...
0
votes
1answer
70 views

Can I fit a 105 crank arm (stages) to a Claris 2400 crankset?

I currently have a Specialized Secteur with a Shimano Claris 2400 crankset (compact). I'd like to buy a Stages power meter but they do not sell Claris crank arms. Can I simply put a 105 crank arm on ...
3
votes
3answers
206 views

Does the rear tyre carry more weight than the front tyre?

As I'm riding my bike, it looks as if the rear tyre is carrying more weight than the front tyre: The rear tyre looks more squished downwards, even though both are equally well-inflated. This I think ...
0
votes
2answers
486 views

Can I change my 7-speed rear derailleur to an 8-speed?

I bought a 2013 Cannondale Quick 6 Hybrid for my daily commute almost exactly a year ago, and I'm looking to give it some upgrades. It currently has a 7-speed Shimano Altus derailleur, and I was ...
2
votes
2answers
130 views

How are hub dynamo lights wired and why does a rear light cause the front to come on?

I have a bike with a Shimano hub dynamo, a B&M Cyo switched LED front (LED) light, and a B&M D-Toplight rear (LED) light. With the rear light disconnected, things work as I expect: When ...
2
votes
3answers
200 views

Is it safe to go over roots at high speed on a cross-country bicyle?

I have an average cross-country bike (Cube AIM), with stock parts on it. I have no problems descending at high speeds on a rocky road/singletrack. But when I have a long, steep descend with big ...
1
vote
3answers
191 views

Hill riding: What gears are usually the most comfortable?

I've read this and this and I understand the good ways and the bad on how to ride up hills. In fact I consider myself a good hill climber (roadie), but some of the guys I ride with are beating my KOMs ...
1
vote
3answers
149 views

I just replaced my cassette, do I need replace the 2 month old chain?

I replaced both my cassette and chain in July (2.5 months ago). For some reason my chain started skipping when I was in the smallest cog in back. I took it to a shop, they could not find anything ...
1
vote
1answer
41 views

Changing Frames

I just had a crash and wrecked my Cube hardtail mountain bike. Can I put all the parts, wheels, Reba Rock Shock, Shimano gears etc off my hard tail on to a full suspension frame?
0
votes
1answer
73 views

What causes brakes to perform worse when the bike is loaded?

I adopted a thoroughly abandoned Univega Super Strada from somewhere in the '80s or '90s. It has Shimano caliper brakes in good condition with pads that are worn but still have plenty of the indicator ...
0
votes
1answer
94 views

New wheelset, spokes losing tension

I recently got a new wheelset Reynolds Solitude from a friend. He bought a new bike and it came with these wheels so he sold them as take-offs. They have internal spokes. I have one problem with them ...
0
votes
2answers
178 views

What is the hazard turn signal?

I know the other turn signals, but what if I need to flash the hazard? On a car it is both turn signals, but on a bike stretching both arms is stupid.
-1
votes
1answer
167 views

Can anybody recommend a bike for year round commuting [closed]

I wonder if anyone has any advice or ideas on bikes that I could consider for all year round commuting to and from work. My commute is a 20 mile round trip on a mixture of rural and urban roads. ...
0
votes
0answers
30 views

I haven't ridden my bicycle in years. What basic maintenance should I check before hopping back on? [duplicate]

My bike has been sitting in a garage, untouched, for around 4 years. I recently grabbed it and brought it to my new house, and want to get back in the habit of riding. What basic things should I check ...
13
votes
4answers
2k views

Should I use lights in foggy conditions?

Today it was foggy, visibility was only slightly reduced, I already wear a high-vis on my bike but I am wondering if it is still worth me using my lights or is that overkill?
1
vote
2answers
136 views

Do I need a chain guide or bash guard to convert to a single chain ring?

I want to convert an old 12-speed into a 1x6 for urban commuting. I'm hoping to keep one of the existing chain rings at 42T and use washers on the chainring bolts or replace them with single speed ...
2
votes
2answers
82 views

How much does number of gears matter for a front derailleur?

I need a low clamp 2x10 front derailleur. As it turns out to be a challenge to find locally, I begin to wonder How important is the rear gear specification? What is I get 2x9? How important is ...
2
votes
1answer
68 views

Can I swap my fixie frame and still keep all my old components?

I would like to change the frame of my fixie, it's too small for me now. It's a PureFix Bravo 50 cm, these are the specs. I would like to change the frame for a bigger one, a 54 or 58 cm one. Is it ...
0
votes
1answer
66 views

My chain came out of dérailleur frame, but gap seems too small, am I misunderstanding something?

So the chain came off my bike on the way to work this morning, but when I tried to put it back on, it seems like it has also come out of the dérailleur frame, but the gap where it seems to have come ...
1
vote
3answers
99 views

Neck pain after BG Bike Fit?

I did the smart thing and went in for a bike fit 3 weeks ago. I had some serious pain in my hands which has since been essentially resolved. Now, in the drops and at the hoods, I get pretty wretched ...
2
votes
1answer
213 views

What are the advantages of 4 arm cranks for road bikes?

Are 4 arm cranks the future for road bikes? What are the advantages?
0
votes
0answers
28 views

muddy fox “ ” Rebel" [duplicate]

Can i change my muddy fox rebels rear brake for a disc brake? It doesn't seem to have the mounting bit on it but I have seen that you can get some that screw into the couple of holes in the frame. Any ...
1
vote
3answers
105 views

Reuse oversized hardtrail frame to build a commuter bike? [duplicate]

I have a spare hardtrail frame which is too big (20.5") for me (5'7") for riding trails. Would it make sense to build a commuter bike for me as road/touring bike frames are generally larger than MTB? ...

15 30 50 per page