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Post by shakerdriver on Dec 6, 2010 17:41:41 GMT -5
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Post by Fox on Dec 6, 2010 18:56:44 GMT -5
I've never seen one before. Looks like the weights don't actually rub against anything. It looks to me like they sort of pivot on the three shafts. That motion must make the whole thing slide outward somehow so something must rub on something. Maybe little gears? It's perplexing how it says "roller weights" in the specs but after that it says "this kit does no include roller weights"  |
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Post by shakerdriver on Dec 6, 2010 19:04:11 GMT -5
It's perplexing how it says "roller weights" in the specs but after that it says "this kit does no include roller weights" yeah i found that a little misleading myself Fox. :stumped: |
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Post by Fox on Dec 6, 2010 19:08:52 GMT -5
So I did a google search and I was right. Instead of the weights doing the friction thing, they make three metal plates rub against three little dedicated friction "pads" so the weights never wear out. I guess they must sell replacement pads when they get worn so the range of motion isn't decreased. Seems like a good design but it might be a POS.  It must work with the stock drive face.  |
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Post by Goosey on Dec 6, 2010 19:09:34 GMT -5
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Post by 90GTVert on Dec 6, 2010 19:13:04 GMT -5
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Post by 90GTVert on Dec 6, 2010 19:13:55 GMT -5
Wow we all jumped on that at the same time. I must be slowest with the searches. lol
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Post by Goosey on Dec 6, 2010 19:18:11 GMT -5
LOL, from scooter army,
The ER3 is Doppler’s top of the line offering, and utilizes weights attached to two rocker arms to actuate its mobile cheek. This is advantageous for a couple of reasons. The rollers weights on variators that utilize them tend to wear, slowly reducing their weight, which eventually effects the adjustment of the variator. This is of no concern with a variator utilizing the rocker arm system, as the weights will never wear. Adjustments are also accomplished much easier on a variator with the rocker arm system (specifically the ER3) as the weights are external and adjustment requires no dismantling of the variator itself whatsoever. The ER3 is available with or without a clutch function. 146 euro.
A note on Doppler variators*
It has been noted that Doppler variators, specifically the ER2 and ER3 have a tendency to wear faster than others. The fact that each individual part is available for replacement from the dealers is both evidence that this is true and a solution to the problem. The cheeks that the belt rides on become grooved in the lowest and uppermost positions over time due to belt slippage in those areas. I’ve read an account of an ER2 worn so badly that it felt like a two speed rather than the progressive change in speed normally associated with variators. If running a Doppler variator, use of the proper belt is essential to the life of the variator. The Doppler belt, or Bidalot 782 is recommended. If the variator collides with the driven pulley (as is a known problem with the ER3) use of a longer belt (such as the aforementioned Bidalot 782) should take care of it. USE OF A STOCK BELT WILL RESULT IN PREMATURE WEAR!!
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Post by 90GTVert on Dec 6, 2010 19:26:35 GMT -5
Nice find! Thank you.
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Post by shakerdriver on Dec 6, 2010 19:29:58 GMT -5
ok, now i understand how it works. with centrifical force the weights actually "lean out" so to speak and it raises the little "fingers" which forces the backing plate out like a roller would in a standard vario. now i'm wondering 1: how long do the little pads and fingers last? 2: how expensive are they to replace? 3:where can you get them cause they weren't listed in the related parts section. just a few thoughts i had, sorry. it looks like a good design but it also makes me wonder about the longevity of those little pads on the back of the backing plate?
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Post by shakerdriver on Dec 6, 2010 19:34:00 GMT -5
dang gooseys on it, posted all that before i could even type my little thought bubble there.
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Post by Goosey on Dec 6, 2010 19:37:04 GMT -5
Don't know what this cardboard trick is for, but the video kind of shows the thing working, www.youtube.com/watch?v=Suq52BznptAI love my google :rockon: Looks like someting to use if you want to tune the weights often, a bit too many parts for practical daily users? |
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Post by shakerdriver on Dec 6, 2010 19:43:36 GMT -5
makes sense now but still wondering about reliability and longevity.
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Post by Fox on Dec 6, 2010 20:43:33 GMT -5
The cardboard makes the variator pinch the belt more so you can push start the engine. It probably flies out once the engine starts |
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Post by stepthrutuner on Dec 6, 2010 20:55:12 GMT -5
Magnets in there?
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It must work with the stock drive face. 
