Tip & How-To about Cycling

Emergency bicycle TYRE repair

If you are considering going on a long bike trip and don't want to carry a spare tyre here is the alternative . If you are on the road far from anywhere and your tyre bulges and splits and blows the tube with a bang then you may need this . I used this technique when I was 100km from civilization . Get a PET plastic bottle -you may find these on the side of the road . As the PET plastic can take pressure it is an ideal candidate for emergency repair . If you don't have a knife to cut it use broken glass on the road or use your bike's cable to cut it (slow). Cut the piece to fit inside,try to avoid jagged edges . It's ok to curl the pet plastic around the tube and insert in tyre -make sure that is is larger than the hole . Fit tyre to rim -be careful to seat it properly around mend ,then pump slowly and constantly check to make sure tyre is seated . Be careful when you ride as this is ONLY an emergency repair but it sure beats walking 100km in the heat. Also make sure your brake blocks aren't rubbing near the repair -ti will bulge some -don't inflate to full pressure -just enough to be usable . I used this trick to get me home from Brookton to Perth Western Australia on fully loaded touring bike .

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how long does reserve last on dtx supermoto

in what gear, on road 4th or off road 1st? (application duty is huge on this bike)
not far. but on a tiny 125 , most res. is about 0.5gal.
RTM ? it tell you in the oper..guided, the res.capacity.
so do the math,,,,,
Miles = MPG times 0.5
so 100mpg is possible on road. this bike. again RTM.
so 100mpg times 0.5 = 50 miles.
if off road , no were near that. or if driven hard.
so from 25miles. to 50 miles.
i had 360cc that sucked gas like a pig and went 10miles.
i was always pushing it to a station, until i carried, spare fuel in my back pack.

Dec 11, 2013 | 2004 Yamaha DT 125 R

2 Answers

Can wheels and tires affect gas mileage?

Well braking will drastically reduce your fuel economy, as of course this is taking the inertia energy of the vehicle which you built burning fuel in the engine and then reducing that and changing that inertia into heat.Your tyres do pretty much the same thing as they are a trade off between low rolling resistance and grip which helps you turn and brake. The reason trains have steel wheels is because they turn on tracks, although their braking distance is severely affected. You need to stop quickly in a car and corner safely enough to not end up in a ditch each time you take a corner, and this is why you have high grip rubber tyres on your vehicle.Typically the best way to reduce rolling resistance with your present set of tyres, is to keep them inflated up to pressure, or even slightly over pressure, which most vehicles can afford to do. (arround 5 P.S.I. will do)Other fuel saving techniques which can drastically improve performance are:
1) Remove excess weight such as the spare wheel, jack, wrench etc. Carry a can of tyre sealant instead for minor emergencies.
2) Remove any excess baggage which doesn't need to make permanent home in your car.
3) Remove any unused bike racks, roof racks and spoilers from the car.
4) When driving keep plenty of room between yourself and the car in front. This allows you to use lighter braking force when cruising at speed and also allows you to get off the gas earlier when stopping.The same goes for looking well ahead in the road for red traffic lights or stop signs. Get off the gas early if you are going to be stopping up ahead anyway!
5) Best fuel saving tip overall; plan your route ahead of time. If it's a route you are unfamiliar with then driving around in circles trying to find it is not going to save any fuel at all. Planning ahead and travelling during low traffic volume periods can save a huge quantity of fuel.

6) Share your supermarket/shopping mall trip with a neighbor or friend. You can share the cost of fuel and reduce the number of vehicles on the road at the same time.

7) Manage several errands in one long trip. Cars by far use the most fuel on cold start and during cold running, as well as suffer around 80% of engine wear during cold start only. By keeping your car up to temperature on a longer journey, you can improve your average fuel economy and reduce wear and tear to the engine internals.

8) When accelerating up to cruising speed, use around 75% of the available engine power. Only reserve this method for times when there is little traffic ahead and you can maintain safe braking distances ahead. Getting up to speed more quickly actually saves fuel in the long run. I really don't mean burn the rubber off the wheels and burn your clutch out kind of acceleration though, so take it easy!

Oct 30, 2012 | 2007 Cadillac Escalade Two-Wheel Drive

1 Answer

Can you please provide me a list of all major bike types?

I have listed the most famous bike types: BMX Bicycle

Bicycle Moto Cross (BMX) bicycles are designed for rough off road riding and are typically single speed. People also use them for stunt riding, and you may see some fitted with stunt pegs.

Mountain Bike (MTB)

A mountain bike is designed for trail riding and downhill riding. It can also be ridden on the road. They come in many shapes and forms. Some have no suspension, whilst others have front and rear suspension. A mountain bike without rear suspension is usually called a hard tail bike.

Most MTBs use 26 inch wheels which is the standard. This size wheel is fairly strong, especially when coupled with the large off road tyres that are fitted to MTBs.

An MTB is suited for off road riding and will handle rough terrain quite easy. It is very stable on rough terrain, but is a lot slower to ride on the road when compared to a road bike. It is also suitably geared for climbing hills.

Hybrid Bicycle

Another style of bike that has a similar riding position to a mountain bike, but better road speed is a Hybrid bicycle. Hybrids are a cross between a mountain bike and a road bike. They have an upright comfortable position, road tyres, and are usually a lot lighter than a mountain bike.

Hybrid bicycles are typically used for commuting.

Touring Bicycle

A touring bicycle is designed for loaded cycle touring and has the capability to be fitted with mudguards, racks, panniers and extra water cages. They are typically fitted with wider road type tyres that are suitable for gravel riding also.

They usually come with a stronger frame and longer chainstays so that the back of your feet don't hit the rear panniers. They are usually fitted with a relaxed drop bar style handlebar. The geometry of the frame is also different and allows for much more easier steering and handling when loaded.

Expedition Bicycle

As above for touring, but usually fitted with Trekking bars and MTB gear and is designed for extreme off road conditions.

Randonneur or 'All Rounder'

A rare beast in Australia where we like to specialise. 'Randonneur' is a French term, coined to describe a bike that can do a bit of everything - you can ride with the pack or take a doddle with the kids, you can ride light or carry a load, you'd use it to visit Gran on Sunday then pick up some groceries on the way home. They are the 'family station wagon' of cycling. However, like any Jack of All Trades, they do everything well but the specialists do it better. They can carry a load but not like a heavy tourer. They are fast but heavier than a racer and with more comfortable geometry. They have wider wheels and tyres to ride on rough roads but wont handle true off road work.

Typically, they look like any other racing or flat bar road bike ... until you look at the details. Most randonneurs start life as a touring bike or hybrid, and are then modified by the owner over time to reflect how they are used.

Dec 21, 2010 | Cycling

1 Answer

How well do Specialized Tricross bicycles compare to Touring bikes? The goal is trans-continental tour. Bikes I'm looking at are the Trek 520, Surly Long Haul Trucker, and comparable in price Specialized Tricross. Going west to east, solo, front and rear panniers, and I'm 6' 170 lbs.

A comment regarding the Specialized. Wheel base is a little short. May or may not have heel clearance for your rear panniers. Gearing is not quite low enough for my taste. I would exchange the 12-27 cassette for at least an 11-32. You will be hauling at least 45 to 50 pounds of racks, panniers, and gear. Plus 28-30 pounds for the bike and your 170 pounds. Grand total of upwards of 250 pounds. Plus water. All being propelled by your legs, lungs, and heart.
As far as training, hit the weights. Can't emphasis enough the importance of strength when you are riding day after day. If you are carrying any extra weight, do your best to be as lean as possible. Any and all extra weight will conspire to sap strength from you and contribute to fatigue.
I rode from Seattle to San Francisco. 3 weeks covering 1000 miles supported. Bike was about 7 pounds too heavy and I was about 25 pounds too heavy despite losing weight prior to my trip. I was very fatigued by the end of the trip. Your trip will be twice as long carrying more gear. Are you using an Adventure Cycle mapped route?
Also something to consider. Use a lighter weight bicycle and carry your gear in a B.O.B. trailer. Trailer carries the bulk of the weight, so you can use a lighter bicycle. No need for a heavy front tire and rim.
Good Luck

Dec 21, 2010 | Cycling

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