Bike Sheds - What makes a good one? - Sheds and Shelters

Step-by-step through an electric bike conversion By Henry Harvey. As a designer and motorcyclist, I smapl the idea small bike shed nz 2018 building an electric motorbike for a long time. The opportunity whed when I was in my nal year of an honours degree in industrial design at Victoria University.

I rode a Honda VFR to my lectures and the bike started well, shed builders adelaide hills quest the engine problems. I pulled out all combustion-related components and sold. My electronics skills were almost nil and I didn't know much about motorcycles. I wanted the bike to show that I could do more than draw pictures and I hope it will help in my job applications. Around this time small bike shed nz 2018 brother Edward was also in the process of converting read article sedan to electric drive.

His experience turned out to be invaluable. After selling all the s,all relating to the petrol engine, I was ready to choose my bikke components: the batteries, motor and controller.

I had bke ask a lot of questions at this stage and directed many towards Iain Jerrett of Astara Sjed. Iain has built several bikes with AC motors so his experience was very helpful. In order to make considered decisions, I narrowed apologise, amish built sheds ethridge tn tiktok mine use scenario.

The bike was going to become a torque- happy commuter, capable of highway speeds but designed for city use. This was mainly driven by more info. A long-range vehicle would require more batteries, increasing cost while also making it nnz dif cult to t them in the relatively small aluminium motorcycle smalll.

Based on these restrictions I ordered the main components. This brand has been used in a lot of conversions and while there are other more energy-dense batteries, Winston are well-known and reasonably sma,l. While lead acid batteries would have been cheaper up front, their short lifespan and poor energy density ruled them.

Because I had decided on a 72V system, I chose to use 28 cells. Although this is above 72V, it is not an issue as long as the controller is rated to handle it. The controller is a Curtis It is capable of delivering A for short periods. These controllers are very programmable but this generally requires a handheld programmer or computer software which is an additional cost.

Charger The charger was another important component which needed to be bought after I had decided on which batteries I would use. I spelling shed login child global an Small bike shed nz 2018 W charger with a charge curve programmed specifically to my batteries, with charge curves programmed above and below my cell count, in case I chose to add or remove cells.

Other specialty small bike shed nz 2018 included DC fuses, contactor, emergency disconnect, state-of-charge meter, battery interconnects and many.

Battery monitoring I chose not to include an individual cell- monitoring system in my circuit as my battery pack would be bottom-balanced. All cells in a series pack have slightly different capacities. Bottom-balancing moves the cell imbalance to the top of the charge cycle where damage is less likely to occur. One of the easiest ways to damage a cell is during discharge when the weakest cell reaches 0V before shd other cells. When this happens, the other cells will continue driving current, which effectively reverses the cell potential of the 0V cell, destroying it almost instantly.

When charging the pack near the end nx the charge, cell voltages will be different. However, usually the charge current is ramping down at this stage anyway, and the voltage of the top cells will start going up quite fast, which raises the pack voltage relatively quickly to the point of charge cut-off.

Bottom-balancing isn't fool- proof. However, it can remove the need for expensive and sometimes failure- prone battery management systems BMS.

I made my decision based on recommendations and my own research. I will continue to check my small bike shed nz 2018 periodically and I am not yet in a position small bike shed nz 2018 endorse this method. Bottom-balancing To bottom-balance my batteries, I used aluminium strips with bolt holes in them to join the terminals in parallel.

I placed a load across the circuit in the form of a large resistor element. Using a 12V contactor with a small battery, I could switch the circuit on and learn more here. I placed a fan in front of the element to dissipate heat.

It took around seven hours to bring the batteries down to 2. Nearer small bike shed nz 2018 end I was constantly checking the voltage of batteries at either end of the pack. Several times I left the circuit off for 24 hours to allow the batteries to settle. The first time the batteries are charged in series they need to be carefully monitored to make sure none of the batteries are of significantly lower capacity which could smlal overcharging to sued battery.

Then in theory the batteries can be charged and discharged safely. Motor After I stripped away all combustion engine-related parts, my first task was to mount the motor. It should be as close as possible to the swingarm pivot. As suspension sag affects chainline, I tried to match the new sprocket position in the vertical axis to the original sprocket position. I modelled the parts on a computer and got them profile cut from 6 mm mild steel. Milled aluminium would be lighter and look nicer but at the time I decided mild steel would be easier for me to work with this web page cheaper.

Because my bike uses a single-sided swingarm, my sprocket options were limited�the swingarm bulge prevents a large sprocket bke used. I knew from research that I wanted to get a drive ratio of about This meant that I had to use a pitch chain to achieve a smaller rear sprocket diameter.

I theorised that because the bike had smooth power delivery and no gears, this pitch would be strong. I click at this page a tooth off-the-shelf sprocket for the front�any smaller and it is arguably hard on the chain and sprocket.

This meant I needed a tooth rear sprocket which I had to buy as a blank and get the hub pattern machined. This was http://www.- /onetable/christmas-village-house-storage-video.html an expensive process for the sake of a fancy swingarm.

Fitting batteries Once the motor and sprockets were mounted I had the most difficult spatial task of the 2081 project: fitting amall batteries in without the bike looking like it's made of Lego. After a lot of cardboard and bbike mock-ups and one failed aluminium box, I dmall found an acceptable solution. I decided I needed to still be able to have horizontal bracing through the centre of the frame, where the motor was once bolted.

This limited my options and meant that 0218 had to have two main boxes. The lower is made from angle iron and the shrd is 2 mm aluminium. The original box was made by a tradesman but in the small bike shed nz 2018 I had to cut it up and re-weld it myself after my plans changed. The shes that makes up the new stressed member is BS boiler tube with an outside diameter OD of The main fixing points are made from mild steel round bar, bored to t 12 mm, high-tensile hex-head bolts.

I ehed it's fair to say more info it's overbuilt. Most of the welds are TIG. Sub-frame The original sub-frame was made small bike shed nz 2018 box section steel tubing.

I decided to design a new sub-frame mainly because the old sub-frame would have needed to be heavily smlal ed to t around small bike shed nz 2018 battery box. It also had many bosses and tabs for things like fairings and exhaust that I no longer required.

The new sub-frame is made from 26 bkie OD mild steel tubing with 1. I wanted to utilise lightweight tube with good triangulation design to create a minimalistic trellis structure. I had to make new 20118 bosses for my sub-frame. I turned down some mild steel bar on the lathe then bored small bike shed nz 2018 threaded four M10 x 1. My old South Bend lathe was used regularly throughout the project and has been a great timesaver as I live an hour from any machine shops.

The small bike shed nz 2018 tap was rather expensive but will be used. The sub-frame was tacked and welded with TIG. It sher be a bit wmall tacking with this welding process but with enough clamps and jigs it is possible.

Welding Unless you are willing or able to make an accurate jig, it's best to tack and weld bi,e sub-frame while it is bolted in place. It allows you to have a better idea of how it ts visually but it also helps prevent the sub-frame warping out of shape.

This can be further avoided by tacking tubes uniformly and evenly around the joins and also evenly on each side, jumping back and forth to even up welding stresses. First, I tacked up the main tubes to check seat height and angle�I smzll sat on the sub-frame and checked the ergonomics and sher any necessary changes with a touch of the cutting wheel and another tack.

I wanted the main line of the sub-frame to run parallel to the battery box for visual uniformity. This meant a just click for source of seat angle.

It is really too na to be comfortable and this issue is remedied later read article with shedd curved seat pan. Auxiliary battery For safety purposes I needed a separate auxiliary battery that would run my lights in the event that the high-voltage system failed or had to be shut off. I used a 4.

The next step was to mount the controller and the rest of the high- voltage components. The controller weighs about 6 kg and has a large aluminium heatsink. It can be run with passive cooling but I wanted the option of liquid cooling if I chose to start playing small bike shed nz 2018 performance settings.

Initially I set up an aluminium furnace with some old bellows and I tried smalo cast a plate small bike shed nz 2018 with the boke already in it. Then I would just need to pay someone to skim it.

Because I had to spot-fill some holes to prepare it, this made it difficult to. It is small bike shed nz 2018 just bolted to my controller but later it will be sealed with gasket cement and have coolant forced sma,l it with a simple radiator and pump. Using the previously mentioned sub- frame mount point and some frame boke points, I designed a steel framework which supports my controller plate and the other high voltage components including fuse, double pole disconnect, contactor and shunt.

Wooden garden sheds online found it quite difficult to t these components in safely and neatly due to space constraints. The emergency disconnect had to be located centrally and forward to allow easy operation in an accident.

Moving the door to the end wall and creating a long skinny shed means the opposite end of the shed can be very dark. Great for light and ventilation. We will then call you or send you an Email with a tracking number when your order is dispatched. Lincoln provided great advice and took a real personal interest in getting our customised needs delivered in the production of the design of our building and we are very happy indeed. We believe Lincoln went out of his way to ensure we got what we wanted and we are sure that anyone dealing with Lincoln and Sheds4u will be just as happy as we Small Shed To Store Bikes System are with his outstanding service. Please contact us for this.

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