dave_xb12r
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I thought thats what we were talking about. I'm so confused.
Anyone heard from Trojan-Horse Racing - Adrenalin Moto -Twinshack
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I thought thats what we were talking about. I'm so confused.
dave_xb12r
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I've seen it.
you need to realize also that the belt is designed to have the tension in certain areas and not others.with engine force it is distributed through the teeth on the belt and diameter of the front pully and the length of the belt.under hard braking the pressure is placed on a small area and greater angles.
if you build an arch to support 100 tons bearing down on it no problem the same arch will fail with 100 tons pushing up on it,a bolt that will support 10k lbs vertically lay it on its side and apply the same weight it bends,apply a certain amount preassure to the ends of an egg then to the sides the sides fail sooner.so just because the belt and bearings are fine with tension applied as designed dosnt mean its fine when applied on a smaller area on the back side at greater angles.i have no reason to dout free spirits and havent heard any solid arguments or seen any data proving other wise.
dave_xb12r
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You need to realize 2 things, the belt rotates AND if they needed a spring on the tensioner, it would have been designed with one.
adrenalinmoto
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Not necessarily. Bikes are built to a cost because the manufacturers are run as much by accountants as by engineers, so often include parts that are not what the engineer would really want if he had a free hand.
Also, just because the theory works doesn't necessarily mean that the idea works in practice (The Buell tube frame suspension arrangement is a prime example of this!).
Most belts don't break because they get stones in them or other foreign object damage. The vast majority break due to 'shock loading', normally caused when the rear suspension moves up/down violently or suddenly such as speed humps, stoppies, wheelies etc. The sprung tensioner deflects a lot of this shock loading and helps to protect the belt against the sudden increases in belt tension. It laso gives rear wheel bearings and output shaft bearings a much easier life.
If you want a demonstration of how much difference these make, push your bike along with the engine switched off and you will feel a lot of resistance from the belt. After fiting one of these tensioners that resistance will reduce substantially. Not a scientific test but a good demonstration.
We have sold hundreds of these over the last 10 years and they work
adrenalinmoto
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As Buell never saw fit to replace the fixed tensioner on the XB with anything else while it was in production, I hardly expect them to admit now that it could have been improved
konarider94
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im done here, this is going no where fast.
who gives a **** about an arch. this is just like a story i know called "the puppy who lost his way." One day the puppy got bigger and broke his leash and ran away. So the owner replaced his leash with a bigger one. This leash lasted for many years until one day it too broke. A traveling salesman found the puppy and gave it back to the owner. The salesman sold these really expensive collars and promised the leash and the puppy would live longer. So you see, the puppy is like a buell, only the puppy was a dog. The leash, "a drive belt" and the collar was like the spring tensioner. But the spring tensioner, that was a revolution. To this day the owner never could fully explain how a new collar should make the leash last longer.
who gives a **** about an arch. this is just like a story i know called "the puppy who lost his way." One day the puppy got bigger and broke his leash and ran away. So the owner replaced his leash with a bigger one. This leash lasted for many years until one day it too broke. A traveling salesman found the puppy and gave it back to the owner. The salesman sold these really expensive collars and promised the leash and the puppy would live longer. So you see, the puppy is like a buell, only the puppy was a dog. The leash, "a drive belt" and the collar was like the spring tensioner. But the spring tensioner, that was a revolution. To this day the owner never could fully explain how a new collar should make the leash last longer.
dave_xb12r
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Imma quote you twice and I'm done
You're a walking contradiction
You're a walking contradiction
Per the recommendations/requirements of the belt manufacturer, these systems do not supply sufficient tension on the belt. The belt needs to be tight to avoid ratcheting under hard riding (downshifts, wheelies, etc.); once it ratchets on the sprocket failure follows quickly.
Directly from EBR
Directly from EBR
I don't really have anything to add except that this is sort of like an argument from authority. Which is useless. Yeah, they should know better, but at the same time, aren't they the ones selling them? Of course they are going to tell you they are great.
dave_xb12r
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Bam!
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I always thought to myself those things look cool but the spring is fully compressed so what is it doing.
