0
votes
1answer
147 views

Has anyone tried this “poor mans” homemade electric bike idea?

I have a wiper motor from some car or van that has a shaft on it. When I apply 12 volts to it, with no load on it, it seems to spin at about 125 RPMs. I vaguely remember that when I load it, it can ...
-2
votes
2answers
122 views

how to design a shaft and gears for shaft driven bicycle [closed]

i want to know about the complete design and dimensions of the shaft and suggest me to give more efficiency to the bicycle
0
votes
1answer
73 views

Comfort vs comfort [closed]

New to the sport of cycling and considering two bikes. The Domane trek 4.3 Disc 2015 and the Domane 4.3 trek 2014 . It's for a 120 km event. Which would give more body comfort in such a distance ? ...
1
vote
0answers
27 views

Can I run Aluminum Backed organic brake pads with Elixir Avid 5 Hydraulic system?

The old pads were steel. I bought the aluminum thinking they would disperse heat better but if it's going to cause a problem with the braking system I'll go back to steel at less than half the price. ...
-4
votes
1answer
92 views

Super close ratio high gears via double size sprockets… practical?

I am wondering why they use such small cogs on a bike. Problem with that is as you get down below about 15 teeth, you cannot get precise steps to the next gear. For example, you can go 15 to 14 or ...
0
votes
1answer
68 views

After conversion, Paramount OS is super squirrely

All, I have a custom made Paramount OS from 1991. I converted the bike to be my bike for family rides. To do this, I replaced the handlebars and put larger tires on the rim ~ nothing crazy, just a ...
3
votes
2answers
233 views

Multi directional release pedals for road bicycling?

I saw one Force model that looked like a separated part that might release, twisting your leg upwards or sideways or something. Reminded me of the toe realease on ski bindings. Basically as many ...
1
vote
2answers
42 views

Better tyres for Cannondale Bad Boy?

90 % I bike off road, but easy and lazy, but 2 3 times a year I go seriously up hills I mean Ventoux and that kind of stuff. I would like then to use tires that are somewhat more effective. Since I ...
0
votes
1answer
19 views

Chain skip options on vintage 'frankenbike'

I have a late 80s Bianchi Volpe which came with Sakae Ringyo SX cranks and bb, SunTour barcon shifters and derailers, and SunTour chain. The freewheel was aftermarket 7 speed and never rolled well ...
-2
votes
1answer
103 views

Left side isolated granny gear, right side all other gears? Possible and practical?

To me, the left side on a bike that doesn't have a rear disc brake is being somewhat wasted. So how about this idea... on the right side have the normal gears but on the left side, have a ...
-2
votes
1answer
56 views

Quad chainring (4x12)?

Does anyone yet make an affordable quad chainring? I would love to see a 4x12 with my staggered cog idea such that all 12 gears are shifted progressively using the 4 chainrings. Each chainring would ...
3
votes
2answers
110 views

Replacing roller-clutch freehub with ratchet type

I live in Finland, and as such the weather right now is pretty cold. Since I rely on my bike for shopping in a rural area, the frequent and complete loss of drive I now suffer at below-freezing ...
1
vote
1answer
66 views

Ideal % jump between gears?

I am wondering if people prefer equally spaced gears (such as 20% per gear change) or if (like on motorcycles), the lower gears are spread out more and the upper gears are "tighter" (more closely ...
2
votes
2answers
165 views

Triple chainring + nonstandard sloped cogset. Can this work?

It seems that on my mountain bike and all other multispeed bikes I have seen having a rear cassette or freewheel all have sloped cogs, meaning they go from largest to smallest in order of decreasing ...
0
votes
1answer
37 views

Fixed hub threaded

I recently purchased a pre rad Bike, my friend who is a bike guy found it for me and said it was a good buy. Now when I learnt to skid I was fanging thru traffic non stop loving it, until that is the ...
3
votes
3answers
194 views

Can an aluminium frame rust from the inside if water has been in it for some time?

My bike has been sitting out in the open for a few months due to lack of space. When I finally decided to strip it down and bring it inside, a lot of water came out of the frame. It could have been ...
1
vote
1answer
123 views

At what temperature do you say its too cold to ride a bike? [closed]

It's been a great winter here in DC, its mostly high 30's but the last few days it's low 20's and in at night a little windy?
1
vote
2answers
78 views

Half speed internal hub gear?

Rather than resort to radical gears such as a very small granny chainring (such as 20T) and a very large rear cog (40T), both of which can cause some problems for derailleurs as well as other problems ...
-2
votes
1answer
81 views

do you think fixie can beat gear/non-fixie bikes?should i buy new bike? [closed]

i have hero hawk(road bike) which is 10 years old do you think i can beat non fixie bike with this or should i buy new bike? do you recommend fixie or non-fixie bikes?
7
votes
1answer
151 views

Using cheap bike computer as a cadence indicator, possible?

Has anyone ever tried just using a cheap ($5 for example) bike computer but instead of using the wheels, placing the magnet on the crank arms and then calibrating it to show cadence instead of road ...
0
votes
2answers
116 views

Hypothetical 1x10 simplification to 1x3 or 1x5

This is a hypothetical question that will help viewers (including myself) better understand gears and their limitations. Suppose someone sees a bike they like at a local bikeshop and it just happens ...
5
votes
2answers
166 views

How do I change the granny gear on a cheap Walmart mountain bike?

I have a cheap ($100) 26" Walmart mountain bike (Hyper Summit) that has a triple chainring (24,34,42). It appears there is no easy way to remove the granny gear since it has what looks like some type ...
4
votes
2answers
56 views

10 / 11sd compatibility

I own a road bike with a SRAM Red 10 speed 110 BCD crankset and chainrings. I am upgrading the bike to the SRAM 11 speed shifters, cassette, chain and derailleurs. Do I have to buy a whole new SRAM ...
2
votes
1answer
181 views

Muscles sore and ridicously stiff after riding

After buying my first bike I've probably not missed a single day without sitting on the bike. I've been probably riding 10km per day after being somewhat out of shape. Over the days I've noticed ...
1
vote
0answers
18 views

How to know what size of bike is suitable for your height and weight? [duplicate]

There are many parameters when buying a bike, but the important one is the bike size. I want to know how to get the specs for the bike. Any good websites that help you in this regard?
3
votes
6answers
275 views

List of tools to take apart a bike to minimise space for storage

I have a bike that I would like to take apart to store for the winter. I live in a college dorm and don't have much space. What are the basic tools that I would need to take it apart? I think taking ...
0
votes
5answers
132 views

How to equip a bike to avoid parts being stolen [duplicate]

I'm looking for a bike (road bike) in Paris, to move around and avoid train and subways. The only thing that I don't want, is to see my bike stolen a week after I bought it. What are the good ideas ...
5
votes
2answers
1k views

what does a 22 gear bike look like?

I read that road bikes on average have around 22 gears and mountain bikes up to 30-40. But my hybrid only has gears numbered 1-3 on the left hand and gears numbered 1-8 on the right, so my bike's a 8 ...
-1
votes
1answer
25 views

identifying make of MTB alloy suspension bike with frame number AMO1021160 [closed]

IDENTITY OF Mountain bike FULL SUSPENSION FRAME NUMBERED AMO1021160
5
votes
1answer
54 views

Back wheel started moving backwards when pedalling backwards

I have a 10 year old cheap 21 speed mountain bike that I have only ever done basic maintenance on (replacing inner tubes, tyres, brake pads, lubricating chain etc). I have just noticed that when I ...
5
votes
1answer
95 views

How useful/valuable is internal cabling?

I'm in the market for a new bike. I'm not a club rider but a utilitarian one: I commute on my bike, visit friends and run errands. On average I probably ride 2-4 miles per day, almost entirely on good ...
4
votes
2answers
59 views

Switching brakes from mechanical to hydraulics. Disk rotor question

Can I use the disk rotor from the current mechanical brake when I switch to hydraulic?
3
votes
1answer
47 views

Would it be better to fly with my full-size road bike or rent at the destination?

I'm trying to weigh whether to fly from Ireland with my full-size roadbike during my vacation in Italy or whether to rent. Can you give me some rough sense of the costs involved and how I might come ...
1
vote
1answer
58 views

Shimano integrated shifter/brake: Cantilever compatible with V-Brake?

I have to replace an integrated shifter/brake, right side, 7 speed Shimano STX. Is a shifter for V-brake (e.g., this) compatible? Bobotech recommends here not to do such replacement. This question ...
4
votes
1answer
31 views

Crankshaft snags and loses resistance while cycling

I have a hybrid (18+ years old) that I use for daily commuting which has developed a problem with the cranks. Every so often (perhaps 10% of the time) when I push down on either crank arm after ...
3
votes
1answer
57 views

Are there geometrical differences between framesets optimised for flats vs drops, other than top tube length?

Question background: I am on the cusp of buying a 'do it all' bike for commuting and light touring. The bike i'm looking at (Genesis Croix de Fer 2015 model) comes with drop handlebars. I would like ...
5
votes
4answers
168 views

Bike bag options for commuting to and from Airport

I've got a quick trip later in the year to Italy and I'm considering biking on my full sized road bike to/from the airport at both ends of the trip. I'll have my trusty Chrome Industries Rolltop 37 ...
1
vote
0answers
52 views

Shimano STX rear shifter, broken spring

I have to repair a Shimano STX shifter 7 speed (from a Raleigh MT200 bike from 1995). I am almost sure it has a broken spring, similar to that pictured in ...
4
votes
2answers
58 views

Correct cable end for Shimano BL-M421 brake lever

I have a Specialized mtb that has been changed over from V-brakes to disc brakes (by previous owner). After using it for a while, I've noticed binding in the brakes which I think is due to the way the ...
1
vote
1answer
74 views

[MTB ]How much can my bike endure? [closed]

I recently bought a (Mountainbike) Bergamont Revox 3.0 and I'm concerned that I'm not taking proper care of it. I want to know if I can, for example, ride down a flight of stairs or switch the gears ...
9
votes
2answers
669 views

Are curved aluminum forks safe?

This is an entry-level road bike made by "Upland", a Chinese company. That fork is aluminum. You usually only see steel (and sometimes carbon) forks curved like that. The only reason you would ...
1
vote
3answers
154 views

Is it better fitness-wise to ride at the maximum gear?

I just wanted to know if I will be doing more effort while riding at the maximum gear all the time, rather than changing gears constantly. My commute is an hour long, but I want it to be tougher on ...
5
votes
3answers
450 views

Advantages of mounting bottle under frame

I'm wondering if there are any advantages to mounting ones water-bottle on the bottom of the down tube, near the ground, versus on top of the tube. I'm mainly interested in the advantages, or lack ...
5
votes
1answer
50 views

Which front and rear lights can run while charging?

I have a 52V battery pack on my krampus, which I use for commuting to work. I plan on buying a DC-DC converter with two USB outputs to run headlight and taillight. So my requirements are mostly to ...
0
votes
1answer
73 views

Changing the entire chain gear mechanism

I have a Lapierre shaper 100. I am looking to change my entire chain mechanism as some of these parts need to be changed. I have selected my components, and I am hoping you can tell me if these ...
0
votes
1answer
35 views

Need a replacement 42 ring for an Ultegra 9 speed triple

I am replacing my chainrings on a Shimano Ultegra triple crankset. It is 9 speed circa 2003. I can't find a replacement 42 ring as I don't think they make them any more. (I have the replacement 30 and ...
6
votes
2answers
203 views

Why does hunger have a much more drastic effect in cycling than in other endurance activities?

When I'm out cycling I know that once I feel hungry, I only have around half an hour to refuel, otherwise I will bonk in a way that all performance is lost and it feels as if the only way to get me ...
1
vote
4answers
124 views

Gear shifts and drive speed on bikes

If I am driving in the 5th gear, can I know what is my velocity? Let's assume I am on a perfectly flat surface and moving monotonously.
9
votes
1answer
132 views

Are presta valve cores universal?

Is a Stan's presta valve necessarily compatible with presta valve cores from other manufacturers? Or do they all have different threads?
2
votes
2answers
58 views

disk brake rotors mounting on bmx hubs

Preface: I am going to start building out new bike for myself and decided to put disk brakes on my new bmx build as an additional challenge. I am old school and prefer brakes on front as well, it ...

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