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... From my reading on the subject , yes it is that linear... Except the pesky wind resistance is independent of weight. The attached is a diagram i picked up from an American site for Schwalbe. The calculation is based on an 85kg load , but the rolling resistance , this is the bit which is...

The following diagram could reconcile all the arguements. The following diagram taken from the Schwalbe America website details the resistance forces working on a bike.For an undulating terrain, the gradient resistance, should average out to zero, but the rolling resistance , .. the heat...

... Woosh you are in a better position to give reliable statistics than most of the punters here. How many chain snaps as a percentage of product. ?I reckon it pretty small.?

I have never had a chain brake on me. The first I have heard about it is on this forum. If they were a regular occurrence then there must be some underlying cause. A proper engineered product should last a specific duration when subject to known conditions. Chain wear and stretch I understand...

Hi i noted that you recently disagreed with something I wrote. If it was because of some sense of loyalty to d8veh , please don't worry. .. , my post was supportive of him. He was supplying facts rather than unsupported opinions

......... Could I recommend that both sides , remainers and brexit supporters read the attached.... https://www.theatlantic.com/magazine/archive/2017/05/the-plan-to-end-europe/521445/

... I would say 300 + is about right for re celling the existing case with Li ions and getting a charger suited for Li ion. There might be a bit of a kludge in making a connector to go from your current battery case to a a new charger. But electrically it is a simple method .. all you need is...

You also cannot buy any parts for the insides of a microprocessor or a cars engine management unit or its auxiliary motors , alternators , turbochargers, catalytic converters, window motors or many domestic power tools. Any of these items might be comparable in cost to an ebike motor. The trend...

.. put the numbers in, it's not worth it. The killer of energy in a bike is not the kinetic energy, or even climbing hills it's the wind. Say you are travelling in a 10 km HR breeze at 20 km HR. Then you are either in an apparent wind of 10 km HR or 20 km HR or 30 km HR depending on your...

.. kind of defeats the point don't you think?

.. sorry didn't know what type of response you want. An old NIMH battery pack is probably knackered either due to number of recharge cycles or just old age. They had an interesting failure mechanism. .. the nickel had a habit of growing long narrow sharp crystals and sometimes these punctured...

... Never ever had a Guinness in my life!. True fair comment however . I was truelly gobsmacked when the goods arrived the next evening. Literally halfway around the world in a day.

.. yep. The three terminals are for power, ground and thermistor. Embedded inside the battery pack is was a temperature sensing resistance. When the battery was close to full charge, any extra charge was inefficiently converted into stored charge and most was converted to heat. The thermistor...

... I think you could take KTM at his word, and that any main Bosch systems dealer would have the capacity and competence to see you right. Whether there is an underworld of dealer networks distributing parts is neither here or there. Just like I suspect you are not interested in how interflora...

... As you are aware, the Bosch is a system containing the motor assembly proper, the battery pack, wirings, charger , display panel, wheel sensor. Would you expect the bike shop to dismantle the battery pack and rebuild it. For their own reasons, probably due to a QA perception, they want to...

... Whatever about increasing interest rates on student loans, the notion of selling them on to private , (and I will use the term ), vulture funds is appalling. We have experience in this country where bank mortgages were sold on to such vulture funds , at a discount, and whatever guarantees...

A rack should not just fail like that unless it was grossly overloaded. If the welding was defective, it could have affected an entire batch, both the original and maybe all the replacements in the CRC stockpile. Welding and brazing are arts as well as a science and if the temperatures were...

Recuperation of kinetic energy on a ebike is just not worth it. Sales gimmick maybe but the physics don't support it. The kinetic energy of the bike and rider is too low. A car is 100 times more massive and is travelling at 5 times the speed , so the kinetic energy is 2500 times as much.The cost...

... Again I have to agree with you. The qualification of on the battlefield needs to be emphasised. The gas chambers did use chemical agents. Sean Spicer was put on the spot and responded poorly There may well have been other factors at play in Hitler s decision , in addition to the retaliation...

Am I wrong in assuming that the tubular section has come adrift from the flat plate? If so and it has occurred on a number of occasions, then it is probably as stated a vibration problem. Consider using a large blob of a flexible epoxy or the ge lexan polymer and a number of Tieraps