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Author Topic: Reverse Pulley  (Read 7379 times)

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Chains

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Reverse Pulley
« on: February 13, 2017, 04:13:29 PM »

Found this to be interesting, just saw a brochure at the local dealer

https://www.yelvingtonusa.com/products/mechanical-reverse
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Re: Reverse Pulley
« Reply #1 on: February 13, 2017, 07:54:25 PM »

Nothing on the website to say for sure but can't help but be concerned that with all the mechanicals in the pulley that the "cush" of the cush drive is now lost.  More stress on the primary and the crank on several year models of bikes that were already at their limit might not be a good thing. 
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MrSurly

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Reverse Pulley
« Reply #2 on: February 13, 2017, 08:10:41 PM »

I don't see a cutaway but I can envision that this is a pretty cool setup incorporating a planetary gear train along with an impressively compact brake or engagement mechanism. It also appears that the Cush drive is completely intact.
I went back and watched some of their videos. Damned impressive set up. They have a shift dog (shuttle) that locks the sun and planet gears together (normal drive) or slides to lock the planet to the swing arm and let's the sun free to travel backwards (reverse)
Pretty damned slick


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« Last Edit: February 13, 2017, 08:32:22 PM by MrSurly »
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hd-dude

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Re: Reverse Pulley
« Reply #3 on: February 13, 2017, 10:41:15 PM »

I will be installing one of these soon and do a report on it when its done.
« Last Edit: February 14, 2017, 12:37:30 AM by hd-dude »
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Re: Reverse Pulley
« Reply #4 on: February 13, 2017, 10:58:06 PM »

I need to get a look on the computer with a decent sized monitor rather than the damned phone.  Know someone locally that would be very interested it is all that one might hope.
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Eqcons

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Re: Reverse Pulley
« Reply #5 on: February 14, 2017, 06:34:15 AM »

I've been looking at it for a while, and indeed it does look impressive. However, at 2 grand, I won't be investing. :-(
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Re: Reverse Pulley
« Reply #6 on: February 14, 2017, 07:35:28 AM »

I will be installing one of these soon and do a report on it when its done.
Eagerly awaiting a full report as I've considered it myself. Something that can be moved from bike to bike down the road easily as compared to other options.
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Re: Reverse Pulley
« Reply #7 on: February 14, 2017, 07:37:37 AM »

I've been looking at it for a while, and indeed it does look impressive. However, at 2 grand, I won't be investing. :-(
Cheaper than other alternatives out there right now. The Baker unit is cheaper until you consider install fees if you can't do it yourself and even if you can do the install, they're saying 8-9 hours labor for an experienced tech.
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Eqcons

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Re: Reverse Pulley
« Reply #8 on: February 14, 2017, 07:50:04 AM »

Cheaper than other alternatives out there right now. The Baker unit is cheaper until you consider install fees if you can't do it yourself and even if you can do the install, they're saying 8-9 hours labor for an experienced tech.

It's certainly cheaper than alternatives, but I see it as all these companies making aftermarket stuff know that HD charges stupid amounts for the bikes and accessories, making obscene profits, so they think they can do the same.  A kind of "if he can afford a Harley, we can charge big bucks" attitude.  If the price was closer to what it must cost to manufacture, with a sensible profit margin, they'd sell ten times as many.

Only potential drawback I noted with the device is the air elbow on the axle is going to have a problem with clearance on some mufflers.
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Re: Reverse Pulley
« Reply #9 on: February 14, 2017, 09:02:33 AM »

It's certainly cheaper than alternatives, but I see it as all these companies making aftermarket stuff know that HD charges stupid amounts for the bikes and accessories, making obscene profits, so they think they can do the same.  A kind of "if he can afford a Harley, we can charge big bucks" attitude.  If the price was closer to what it must cost to manufacture, with a sensible profit margin, they'd sell ten times as many.

Only potential drawback I noted with the device is the air elbow on the axle is going to have a problem with clearance on some mufflers.

Very true, but on the other hand you have to look at the people who keep handing over the huge piles of cash for all the various aftermarket items at wildly inflated prices.  As long as those kinds of people exist and continue to spend, these companies will continue to charge what the market will bear.  I assume a fair amount of time and expense went into the design and testing of this particular product, as opposed to some of the stuff we see that charges ridiculous prices for simple basic stuff, so I'd expect the initial pricing to be high enough to quickly recoup the development costs.  At some point, though, if they want to increase volume they will have to alter their pricing model.  Notice they've already dropped the price by $200 btw.  There are only so many Harley riders out there willing to spend $2k for something that doesn't involve bling or horsepower.

JMHO - Jerry
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Re: Reverse Pulley
« Reply #10 on: February 14, 2017, 10:30:06 AM »

How embarrassing would it be to forget to press the button and back into a car, or a building, or whatever?
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Re: Reverse Pulley
« Reply #11 on: February 14, 2017, 10:49:21 AM »

Very true, but on the other hand you have to look at the people who keep handing over the huge piles of cash for all the various aftermarket items at wildly inflated prices.  As long as those kinds of people exist and continue to spend, these companies will continue to charge what the market will bear.  I assume a fair amount of time and expense went into the design and testing of this particular product, as opposed to some of the stuff we see that charges ridiculous prices for simple basic stuff, so I'd expect the initial pricing to be high enough to quickly recoup the development costs.  At some point, though, if they want to increase volume they will have to alter their pricing model.  Notice they've already dropped the price by $200 btw.  There are only so many Harley riders out there willing to spend $2k for something that doesn't involve bling or horsepower.

JMHO - Jerry

Don't forget warranty / support Co$t$, a significant % for small entities... Think about how much his Compensator attempt affected Bert's bottom line??

As far as this widget goes, it will be a long, long time before I would trust it :nervous: any failure would be likely to lock up the rear wheel :nervous:
« Last Edit: February 14, 2017, 10:52:18 AM by FlaHeatWave »
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Re: Reverse Pulley
« Reply #12 on: February 14, 2017, 11:19:26 AM »

I really like the look of it and can certainly appreciate the engineering that went into it. I'm actually doing one of those "why didn't *I* think of this" things. The real question revolves around materials and build quality. They've built this within the very limited confines of the stock pulley thickness plus the 1/4" or so of the old spacer. I'm here to say this: Holy Crap, there isn't much room there to create three layers of independently movable components plus the needed bearings and retain something close to the expected strength and durability. I'm going to assume that it's necessarily made of *steel* for sufficient strength of these thin pieces. So, I would also assume that the negatives on this would appear to be 1. cost 2. weight. 3. durability   but damn, it looks like a great idea if #3 proves sufficient.


 
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Re: Reverse Pulley
« Reply #13 on: February 14, 2017, 11:31:30 AM »

Very true, but on the other hand you have to look at the people who keep handing over the huge piles of cash for all the various aftermarket items at wildly inflated prices.  As long as those kinds of people exist and continue to spend, these companies will continue to charge what the market will bear.  I assume a fair amount of time and expense went into the design and testing of this particular product, as opposed to some of the stuff we see that charges ridiculous prices for simple basic stuff, so I'd expect the initial pricing to be high enough to quickly recoup the development costs.  At some point, though, if they want to increase volume they will have to alter their pricing model.  Notice they've already dropped the price by $200 btw.  There are only so many Harley riders out there willing to spend $2k for something that doesn't involve bling or horsepower.

JMHO - Jerry

Absolutely correct, Jerry.
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Re: Reverse Pulley
« Reply #14 on: February 14, 2017, 01:00:44 PM »

What is the fail safe that prevents the shuttle from moving out of place while in the drive mode?  Just wondering because anything mechanical can and usually will fail. 
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