Busch and Muller Lumotec IQ-X - New for 2015

Busch and Muller Lumotec IQ-X - Intro

The advances in LED tech over the last 10 years have been amazing. Light provided per watt of power used is ever increasing, and for those cyclists sticking with dynamo powered lighting, the rewards are great.

Busch and Muller form the back bone of the dynamo power cycle lamp market, and they have announced a new headlamp in August 2015.

I won't lie I am quite excited about it. It is similar in build to the Edelux 2, with an aluminum body and 100 LUX rating. Being the beam is wide this probably translates to around 500 lumen, from a 2.4 watt LED.

Busch and Muller Lumotec IQ-X -How Powerful?

The Cyo headlamp from Busch and Muller has proven very popular, and is generally held as being very reliable. At 100 lux, this new addtion trumps previous 60 and 80 lux versions of the Cyo. It features a super wide beam similar to the Luxos range of lights offered by Bush and Muller.

The below beam pictures taken from the Bush and Muller Website  show comparisons between the old CYo Models and the New Light IQ-X.

60 Lux - I ride with this light at present. It is OK off road, Ample on Road)

80 Lux - I have just purchased this light so will report back soon.

100 Lux - Maintains Light Range and adds to Spread.

It is important to note that the beam of these headlights is well placed on the road. With most off road battery powered headlights, there is a great deal of "splash" from the beam with light shooting out all of the place. This is handy off road as it enable you to spot overhead branches (!) etc.

Busch and Muller Lumotec IQ-X - What Will it Look Like?

Below pictures courtesy of Tour Magazin DE.

Busch and Muller Lumotec IQ-X - Is it Worth Buying.

Reading reviews on the web there has been mixed reviews with regards to the casing design of the Luxos Range, most reviews are favorable. The Edelux II has good reviews and is powered at around 90 LUX. With this light I think Busch and Muller are trying to amend there casing design (?) and up the power a little.

If you cycle in the city or other roads with their own lighting, then this light would be serious over kill. By means of comparison a 60 LUX light such as Busch and Muller Lumotec IQ Cyo T  will give adequate light for 30mph road riding on unlit roads. Off road you will have to slow down a bit.

One of the the thing often overlooked if the pattern of the beam. A very powerful light will "project a spot on the moon" but will  give little light for peripheral vision. From the beam shots above I would say this new IQ-X from B&M gives not only a far reaching beam, but a wide one too. Which would in my opinion warrant an upgrade. Of course if you are alreday using a quality 80 or 90 LUX light then the gains will be less.


Waste Transfer Station Permit

Illustrator Devon

Energy Strategy

The Martian - Book Review - Andy Weir

The Martian - Andy Weir - Book Review

I would rate this book 5 stars. I purchased the book thinking it would be a dry read, but despite the subject matter it is a brisk read and highly enjoyable.

The main character (Watney) gets stuck on Mars after a trip there is aborted due to a large storm. And so we end up with the main character, figuring out a way to firstly survive and then gets back to earth. Watney's exploits are recorded in the first person (very informal) by means of a "ships log" type format. If you have read historic ships logs (such as Shackleton and Cook) then you will know they are a bit dry in places. But Weir gets around this by only having Watney reporting on significant events, which fits well with his rebellious or impatient character.

The book is fairly humorous for me there were around 12 laugh out loud moments, normally placed to break the tension of some catastrophe, which made them so effective.

The sections of the book dealing with NASA response are more "normal" in terms of their format. The characters here are fairly type cast as you would expect for any governmental sort of scenario, but there we are. Expect people calling each other by the surname and drinking lots of coffee. I do not suppose that could be helped.

There are some third person paragraphs which lead up to some of the main disasters in the novel. In the first instance I found this to be really effective, but on the second appearance of these sections I found it forewarned you of the impending doom.

Lastly but not leastly the absolute best thing about the whole book is that it reads like the best ever episode of MacGyver you ever saw, with a Science Fiction twist, I was in heaven. From basic chemistry to hitting stuff with rocks the inventiveness of the main character is a joy to behold. As are his mistakes  . . .

Best book I have read in a while.

If you liked this book then you should read South by Shackleton, a real life story of the guys who went to the Antarctic ahead of the attempt on the South Pole (it is free on Kindle). It is similar story in a lot of ways but a real story.

Illustrator Devon 

DIY Long Tail EBike - Chapter 3

DIY Long Tail EBike - Chapter 3 - Electrics and Drive System

It would appear that building the frame and doing the normal bike stuff was the easiest part of this DIY Long Tail EBike, when you go off piste trying to think about an ad-hoc drive system the project becomes tricky, but certainly not impossible. In Chapter 1 we saw the concept and beginning of the frame. Chapter 2 saw the frame being welded and first test ride. In this chapter I will explain how I fitted the electric drive system.

Rear Wheel Drive - Things can get complicated even without gears.

First off for your own sanity I would advise a front wheel drive system, this allows for standard configurations at the rear of the bike, were you may need gears etc. and lets face it the rear wheel hub area of the bike is complicated enough as it is.

So for those of you looking for guidance at this stage I would suggest a front wheel drive set up for simplicity.

DIY Long Tail EBike - Chapter 3 - The Law

In the UK you are allowed 250w for a normal bike or 300w for a tandem.

This kind of power will propel 200kg of rider and passengers at around 10 mph on flat terrain, perhaps a bit faster dependent on gearing. But you WILL need to pedal quiet hard on a moderate hill, and you will be pushing up a steep hill. One bonus is that if you a carrying a load the bike will push itself up the hill, you can run along side it if you like!

Please Ignore the Color Scheme.

The law state 15.5mph as a maximum speed which is fine, as this feels quite brisk. But if I were to be asked for my opinion I would ay that the wattage could be raised to 1000w (or removed all together) to allow for hill climbing with a load, so long as a max speed limit of 15mph was maintained. After all you can pedal a lot faster than that on the flat any way! Also speed is a lot easier to measure (by the police) than wattage. To measure peak wattage of a setup, the policeman, policelady or policeperson would have to ride the bike up a steep hill whilst looking at the results from a amp meter and then work out the results based on the voltage. Based on the above it is unlikely you will ever get caught for riding an over power e-bike so long as you do not go over 15 mph.

The regulations also state that you should have a metal plaque on your bike stating the manufacturer and wattage and voltage. As my daughter made up the name for the bike (The Happy Uphill Bike) she is elated at the thought of having the bike labelled as such.

This bike is what is known as a "twist and go" I the throttle in independent of the pedals. After January 2016 bikes like this will not be legal, and all e-bikes will have to be pedal sensor type.

DIY Long Tail EBike - Chapter 3 - Voltage

Most motors aviable are 24 or 36 volt with some being 48 volt. The most obviously advantage to my untrained mind with a 24 volt system is that you only need 2 x 12 volt batteries. Which keeps things simple.

However this leaves you a bit stuck if you want to up your voltage.

A Wide Seat = Plenty of Room for Batteries.

I chose two 12 volt 22ah Panasonic Sealed Lead Acid (SLA) batteries. I am still unsure if this was the right choice. Most SLAs require that they are run at 50% discharge as a maximum, meaning a 22ah battery will only give you 11 ah. Looking at the manufacturers specs however, hundreds or cycles are achievable at 100% discharge, which is similar to the alternative that is lithium ion batteries. Expect to pay 3 times the amount for reputable lith-ion batteries of the same capacity.

You see as you increase voltage the required amp hour capacity of a battery decreases. A 36v motor running at 250 w will require a lower current than a a 24v motor doing the same work.

So if you decide to embark on a project such as this choose 4 x 12v batteries at around 10ah. These can be configured as two sets of 12v in parallel to give 24v or all in series for 48volt.

DIY Long Tail EBike - Chapter 3 - Wattage

It would appear that the wattage written on the side of any motor is a made up figure. A 500w motor may be labelled as a 250w motor so it will sell better in an country (like the UK) where 250w is the legal limit.

For testing I have been running my 250w motor with a 500w controller. And that seems to work fine, and gives much more power than when using a 250w controller.

 DIY Long Tail EBike - Chapter 3 - Fixing the Motor

For those of you daft enough to be considering a chain drive motor solution. You can mount using per-manufactured mounting brackets or build a mount with metal, hacksaw and a welder. In may way fixing the motor is quiet easy. the main problem is how to keep the pedals (required by law) and introdcue a motor without having to pedal "through" the motor.

When mounting the motor, try to place some rubber blocks between the frame and motor mount to reduce vibration noise. I used a chopped up bike tire. The motor mount has to be solid, even a small motor produces a strong twisting motion when under load, so the mount should be securely attached to the frame. I initial bolted the motor to the underside of the wooden deck, but this was not good enough and had to weld a mount in place.

Run Two Chains - Note Chain Tensioned for Pedal Chain

Chain Tension - Only One Side can be conventionally tensioned.

The way I got around this was to buy a flip-flop BMX rear wheel, which as a thread for a freewheel on both sides. However, these hubs are not intended to be used both sides at once as the threads will be opposite when mounted on the bike. One freewheel must therefore be glued ( I used strong LOCTITE) in to position to stop it coming undone when in use.

Most flip flop BMX hubs have two different thread sizes for the 2 freewheels so make sure to get the right size freewheels. One is normally standard size the other will be 30mm size.

On tension of the chain. Whilst you can tension the chain by moving the rear wheel as is normally the case. It is unlikely you will end up with a tight chain on both sides. So I have opted to tighten the chain via moving the back wheel on one side (motor side) and with a chain tensioner on the other side. This works fine, but you will need a rear mech hanger welded on the frame some where so as to attach the tensioner. You can buy a steel mech hanger on ebay for £1.50 so don't go hack sawing one off of another bike!

 DIY Long Tail EBike - Chapter 3 - Gearing

The motor chosen is the Unite Motors MY1016Z2, which is a 24v 250w motor with 10:1 reduction gearing. You will need reduction gearing if you intend to run a chain drive motor. Most motors will produce a bout 3000 rpm, if ungeared and so if you "do the math" multiplying rpm by wheel circumference you will get an answer some where in the region of 150mph as a top speed, which is not realistic.

With a 10:1 reduction I ended up with an rpm of 315rpm, further reduce at a ration of 9:16 by the drive sprocket and freewheel gearing. The tire circumference for a 20" wheel is approx 157cm. A simple excel spread sheet is handy, as you can tweak the numbers and watch the results change.

Excel Spread Sheet to Calculate Speed in Relation to Gearing

I have opted for low gearing as I live in a hilly area, to assume that a 250w motor will pull 200kg up a hill, at 15mph incorrect. In fact it will not even pull 200kg at 10 mph as geared above. An increase in the rear freewheel size to 24 teeth gives a top speed of 7 mph. With more torque for hill climbing.

DIY Long Tail EBike - Chapter 3 - Chains and Sprokets

Who knew!? Did you now there are different sizes of chain? I did not. The most important measurement is the pitch this the the length of each link. Most motors come with a #420 sprocket, this to fit #420 chain, this is a heavier grade chain than normal single speed bike chain, the rollers are larger, although the pitch is the same.

My motor sprocket comes with a sprocket that fits normal BMX chain, and that made things easy.

DIY Long Tail E-Bike - Chapter 3 -Wiring

 The ampage involved is considerable.  A household kettle draws a current of 13A, and even a small e-bike motor will draw the same current albeit at a far reduced voltage. For higher powered motors say 500w the current will increase to 25A and you should start to think about the sizes of the wires you use.

Wiring for a brushed motor is relativity simple. Note doubled up wiring. Switches for lights and "Ignition".

I was using bits from the garage and so I have chopped up an old extension lead, which is 13A. I have then doubled up on these wires, using to parallel wires for each high amp connection. If you wanted to do a proper job then head down to your local motor factors and buy some 25A or even 50A wire.

The thick wire need only be used for the follwing connections:

• Motor to the controller.
• Controller to batteries.
• Battery to Battery Connnections.

You can use thinner stuff for the other connections. The controller came with plug in style connectors, I have cut these off and soldered all of the joints.

The complexity of the other wiring will depend a lot on the controller you are using. Some have more "tails" than others. If you have an ignition switch tail then this will need to be sorted out with a toggle switch, so you can turn the controller on and off. However other tails such as brake lights, can be left unused if you want to.

DIY Long Tail EBike - Chapter 3 - Lights

Joy! With a normal dynamo operated push bike you are limited to 6v systems, but with a huge battery to power the motor and the new generation of LED lights you can have some serious fun with the lights. For the rear light I got some cheap LED side lights for about £6. For the front light I purchased a 12V 27W LED flood light, which is just awesome.

A Front fork with V Brake Mounts is preferential over U-Brakes (as pictured)

A Massive front head lamp will be great to use this winter.

In time I will fit a low power "be seen" light and switch the main front light independently so as to effectivly have a dip and main beam. Alternatively you could fit a hood over the front lamp to direct beam away from drivers eyes.

DIY Long Tail EBike - Chapter 3 - Lessons Learned

1. 250w will not get you up a hill without pedalling.
2. Don't buy purple pedals. Even if they are cheap.
3. SLA batteries are fine. 
4. A bank of smaller batteries is more versatile than two larger ones. 
5. FRONT WHEEL DRIVE is easier. Perhaps opt for a hub motor.
6. You need a geared motor.

Did you miss Chapter 1 or Chapter 2.

Read on in Chapter 4

Please leave any questions or comments below.

Environmental Consultants London

DIY Long Tail EBike - Chapter 2

DIY Long Tail EBike - Chapter 2 - The Frame

The mechanical elements and the electrical elements of an e bike overlap some what. You may have to add in extra mechanical elements (extra rear sprockets & battery storage) to allow for conversion.

I have ordered most of the electrical parts needed, but some are coming from Germany etc. so  for now I am concentrating on the frame. In Chapter 1 we saw the basic concept of the bike, and the initial welds, over the last few weeks I have been "sourcing" some thinner tubing and building the rear seating and battery housing section. If you would like to learn about the electrical system the please go to chapter 3.

The main consideration is a large area in which to place the batteries. I had originally looked at using leisure batteries at around 50ah, but these were very heavy and so have opted for 22ah AGL Lead Acid Batteries, which seem to offer a good compromise. I am opting for a 24 volt system.

I have opted for a  a brushed motor, rather then a hub motor. So there is a space requirement for this too. Below is shown the space allowed within the frame for the batteries and motor. Note Duplo Brick for scale, or size 10.5 plimsoll trainer if you prefer.

A large area needed for batteries and motor.

The whole design of the bike is based around allowing enough space for large batteries, which should give very good range during use. For more detail on specification of electrical systems please see Chapter 3 (coming soon). The width of the rear seat makes it look as though it will be comfy.

Do not Underestimate Heel Clearance

Another major factor is heel clearance. It is amazing how much space you need between the bottom bracket and any protrusion further back.

Rear Frame (needn't be this complicated)

You rear frame needn't be as complicated as this one. I was working with thin tubing (10mm), and so I had to allow for frequent supports. After this ran out I switched to thicker 15mm tubing (galvanised electrical conduit), for the lower rack sections. The result is very strong.

The main tubes (dark grey) are a strong carbon steel  tube around 25mm in diameter, with a 2mm / 3mm wall. These were left over from my other cargo bike build and so they are tried and tested as strong enough.

Allow for chain routing. Run a string from the top of the chain cog to the place where the rear sprocket will be, this area needs to be kept clear. I have opted for a smaller front chain ring to allow for a lower rear deck.

For welding I have been using by old gas-less MIG welder, which is cheap and reliable. TIG welding would be neater, as would brazing, but both are more expensive. and TIG welding I have found tricky to master. A gas-less MIG welder can be had cheaply on ebay, and is useful for so many things, particularly if you like fixing things.

The supports rear of the rear axle - Not so good.

The supports to the rear of the rear axle, did not go so well. I am happy with them strength wise, but the design is poor. Vertical drop outs would allow for a stronger rear facing join in this area, but as they are slot drop outs have to be kept clear to allow for insertion of the wheel.

After welding and brushing of joints comes painting. I had some orange metal paint left over from the last bike I built so I used that. TEMAC Howard Rotovator Orange from Mole Vally Farmers.

DIY Long Tail EBike - Chapter 2 - Kit List

Ingredients for frame:

1. BMX Frame
2. 15mm Metal Tube Mild Steel (Galvanized Electrical Conduit £11 for 6 meters)
3. 10mm Mild Steel Tube (sourced from child's play pen, or similar)
4. 25mm Carbon Steel Tuve (bought from steel stock holder)
5. Gasless Mig Welder
6. Gloves
7. Wire Brush
8. 4" Angle Grinder with flap disc
9. Tape Measure
10. Permanent Marker
11. Spirit Level
12. Straight Edge
13. 2 roles of 0.8mm MIG wire
14. Hack saw
15. Approx 12 hours of time.

DIY Long Tail EBike - Chapter 2 - Lessons Learned

• Always wear gloves when working with metal. Sharp edges can delay things if you cut your hands.
• If your garage floor is flat then assemble the parts on the flat floor and then add them to the main assembly. 
• Once you have a few parts lined up using measurements or spirit levels, line up the other parts by eye, it is quicker.
• Cutting tubes badly and filling with weld is quicker than filing tubes to fit curved edges.
• Even thin tubing can be very rigid is the framing supports are closely spaced.

If you have question please ask away in the comments section below.

Learn about the electrical system in CHAPTER 3.

Flood Risk

Waste Transfer Station Permit

DIY Long Tail EBike - Chapter 1

DIY Long Tail EBike - Chapter 1- Intro

It has been a few year now since I built my first DIY Long Tail Cargo Bike, and it has been very handy for the right sort of trip. (Skip to Chapter 2?)

A long tail cargo bike is excellent for transporting large bulky items that are light in weight think planks of wood, big boxes and christmas trees. But although I regularly use it for transporting my two children on short journeys (combined load of 40 kg), carrying a heavy load really reduces range.

The main problem is that I live in a hilly area, and any journey involves lots of hills, and lots of sweating. Anything over 15 mils carrying two kids means you will want a day or two off, there is also the the problem of gearing, as typical MTB gears just aren't low enough to pedal up the steepest hills, and pushing a heavily loaded bike is no fun (its actually more strenuous than pedaling). 

The Result

So . . . an electrified long tail will enable me to carry kids around in hilly terrain, for useful distances, more quickly, and if I need some exercise I can always hop back on my "analog" bicycle.

As with all by builds I like to keep budget way low, so I am starting off with bits I have in the garage. Which is a BMX frame!

DIY Long Tail EBike - Chapter 1- Why Use a BMX Frame?

So why use a BMX frame?

1. Smaller Wheels = Low Center of Gravity
2. I happen to have a BMX frame spare.
3. BMX parts are cheap.
4. Small Wheels equal lower gearing (motors are typically for 26" wheels).
5. Many have 14mm axles for heavy loads

Humble Beginnings - A Mission "Grave Digger" Frame

DIY Long Tail EBike - Chapter 1-  Getting Started

You will need a welder and a hacksaw a a minimum. Do not be put off by welding, it is very easy. I would recommend a gas less MIG welder for the how user it is cheap and simple.  One can be had on ebay for less than £100, and they are handy for all sorts of things.

Before you start draw a scale drawing of you proposed bike on a sheet of graph paper, a 1 to 10 scale is good and will allow you to use a normal ruler to draw  and scale off with. 1cm = 10cm. So a BMX wheel at 50cm diameter will be 5cm.

A Scale Drawing can help you decide on dimensions and order enough steel.

A rear deck length of  As well as all the normal considerations you will need to leave spaces in the frame adequate for batteries and motors.

To preserve the bottom bracket height measure the gap between the base of the shell and the floor, after you have welded everything back together this will have to be the same as when you stared.

Draw a Line on the floor to help line things up.

Cut the frame (wear gloves) to separate the rear triangle, this frame has wish bone stays which is ideal and saves much faffing. To help get everything lined up draw a line on the floor using a straight edge, this can be used to line everything up. Once welded, it is hard to get everything apart again. 

 

Again you can see the line on the floor is useful for lining things up. To check for uprightness, hold a spirit level against the bottom bracket shell. There are not many points on the bike were you can put a spirit level without getting a false reading.

 

Here she is with the lower strut welded in place. Next up is to check that the bottom bracket is at the right height. I will need a front wheel to do that which is in the post!

We are a fair way from mounting the motor and batteries! That's for sure, but you should have already have an idea of what to use so as to leave room for them in you design.

The frame starts to come together in Chapter 2. . . 

Planning Consultants

Environmental Consultants London

"Where does the urge come from? Feeling's believing."

"Where does the urge come from? Feeling's believing."

This is a quote from a BBC documentary which I first saw in April 2015. The documentary tells the story of Captain "Winkle" Brown, a Pilot, Test Pilot and Naval Officer, who started off flying bi-planes and finished up flying cold war nuclear bombers.

In the documentary there is a black and white news outtake from the 2nd World War era where Captain Winkle Brown Lands a "Vampire" Jet on an Aircraft Carrier.

The pictures show the flight crew of the carrier crowding around the plane after the successful landing, at which point the narrator explains what has been done, points out the pilot, and asks:

"Where does the urge come from? Feeling's believing."

Now I don't know why but this short sentence struck a bit of a chord with me, which is why I have bothered to make a note of its origin here.

Three cheers for Captain Brown and pilots of his generation. Inspirational.

Video of clip from program:

Wide Slick Tyres for MTB (559) 26"

Wide Slick Tyres for MTB (559) 26"

Here is list of wide slick tyres for 559 size (MTB), they are all 2.3" (60mm) or OVER.

Most recently found first!

It is worth noting that the below "official" width measurements are often way off. So when you are buying a 2.5" tyre, it may actually measure at 2.3" or less!

PLEASE LEAVE NOTE OF OTHER TYRES IN COMMENTS IF YOU KNOW OF ANY. PLEASE.

2022 Update 

• Primo Wall Tire 26 x 2.35
• Cordo Zeppelin 26 x 2.35 Balloon Tyre

2020 Update 

• CST Metropolitan Antonov 26" x 2.4"
• GT Smoothie 26" by 2.5"
• Schwalbe Pick Up 26" x 2.35" 
• SURLY EXTRATERRESTRIAL TYRE -  26 x 2.5 - 928g

2019 or Older

• Mafia LAGOS Snakeskin 26" Bike/MTB Tyre - 26 x 2.5
• Schwalbe Crazy Bob - 26 x 2.35
• Cult X Vans 26 Tyre - 26 x 2.3
• S&M Speedball 26" Tyre - 26 x 2.4
• Michelin Pilot Sport 26×2.3 Tyres (Discontinued)
• Try-All 26 x 2.35 (Discontinued)
• Schwalbe Big Apple 26 x 2.35
• Schwalbe Fat Frank 26 x 2.35
• Schwalbe Super Moto X 26 x 2.40
• CST Cyclcops 26 x 2.4
• Duro 26x2.30 Slick Beach Cruiser Mountain Bicycle Tyres
• Duro 26" x 3.0" DB1012 Beach Bum Black Tyres
• 26” x 2.45 BOA-G TYRE
• 2PAK Sunlite Vee Crusher 26"x 3.5"
• Maxxis 26" x 2.5" Hookworm - 1080g
• Hutchinson Low Rider Rigid Tyre 26x2.35 - 1050g
• Kenda Kiniption 26-Inch Wire TyreTyre - 26x2.3 - 840g
•  DMR Supermoto 26-Inch Wire Tyre - Black/Black , 26x2.2
•  Vittoria Booze Light 26-Inch MTB Folding Tyre - Black , 26x2.3
•  Vittoria AKA 26 x2.2
•  Vittoria Tattoo 26 x 2.3
• GT Smoothie 26 x 2.5 

 Life Cycle Assessment (LCA)

Ocean Plastic Charity