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Location: Latitude 41.3016 Longitude 88.6160 | Ck out the new Gearing system Shimano just released on the ANTARES Bass reel, Micro Module Gearing, as you can see in the pic below, look at how many teeth mesh at one time, this sytem screams smoothest. I hope this gearing system makes it in a Musky reel soon.
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 Shimano_12Antares2.jpg (11KB - 624 downloads)
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Posts: 1716
Location: Mt. Zion, IL | Typically more gear teeth with smaller flanks/chordal pitch dimensions are more likely to shear. While you do generate much smoother gearing, the material used has to be much different. Notice the pressure angle of the gear teeth (flanks) on the pinion with the new design also. The increased angle (as opposed to the older gear set) will also smooth out the reel. This will generate more of a lead in with the gearing, but lubrication will be much more critical. These reels will require maintenance more often due to the friction seen by the gears. The increased contact angle (skew) will pull lubrication out of the gear teeth and smaller particulate will effect the smoothness of the newer gear set more than the previous design. I hope they did their homework.
For anyone interested in gearing information:
http://en.wikipedia.org/wiki/Gear |
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Location: Latitude 41.3016 Longitude 88.6160 | Thanks Ryan Joz for your input, I guess we will have to wait and see. Hope the reel will have a grease port on the reel like ABU has on the Toro reels. |
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Posts: 802
| Ryan nailed it; might be great for bass but i'd be leery in a musky reel. just like a screw with fine or coarse threads, there's a time and place for each...
Steve |
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Posts: 360
Location: montreal, canada | Tell me if i'm wrong ! shallower gear will not be thatgood for musky beacause they will be damaged faster by all the preasure that we put on our reel with those big musky lure . I'm i right or wrong . |
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Location: Latitude 41.3016 Longitude 88.6160 | Look close at the pic, the std gears has only 2 teeth meshing together at one time, on the Micro Gears you have 5 teeth meshing, you are spreading out the load over 5 teeth instead of 2. The reel that has the new Micro gearing is a Shimano Antares H / G Retails for over $659.00, it is Shimano Flag Ship Reel for Bass over in Japan, the Antares is design for the new bass umbrella rigs and swimbaits. From all the reports so far the reel is a big hit and the MICRO GEARS are very smooth under load with swimbaits and the umbrella rigs. Leave it to Shimano to come out with the next generation of gearing for reels.
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Shimano_12Antares.jpg (29KB - 311 downloads)
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Posts: 432
Location: Eagan, MN | More teeth yes, but more surface area? Doesn't really appear that way. |
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Posts: 1716
Location: Mt. Zion, IL | There are two major issues with using smaller gear teeth for durability.
1. There is less material to wear. While there are more teeth, the increased contact angle means the teeth slide as the main gear and pinion turn. Friction with metal parts means they are wear items.
2. Smaller teeth withstand lower amounts of stress so if one fails, you will shear multiple teeth. The amount of material with the two teeth appears to be much more substantial than the 5 teeth. This is why Abu experienced failures with the original C4 gearing. Thinner teeth to establish higher speeds meant that the gears failed. Failed gearing does not always mean catastrophic, but roughly meshing gears would also be considered a failure.
Example of stress that could shear gear teeth: Hookset, freeing snags with locked drag, reel engaging on the cast, etc. Braided line would only add to the failures listed above. |
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| I'm inclined to believe that the pressure on the gears (i.e. ratio) has much more to do with failure than the number of teeth. I'd love to test a reel with twice as many teeth and the same ratio. |
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Posts: 1716
Location: Mt. Zion, IL | Guest,
Do you work in a facility determining industrial gear failures daily? That is one of the things I do as a living as a licensed mechanical engineer nearly every day.
You are somewhat right about pressure on the teeth, but smaller teeth have less material to wear before they reach the critical point at which they must be replaced. Larger flanks mean more interference. While you may have more teeth meshed together, not all of them are loaded equally due to approach angles. Having an increased contact angle will cause the gears to wear more than the previous design. Shimano will have to use a much different material if durability was one of their design criteria with this type of gearing.
If you zoom in on the picture, only about two teeth are fully engaged in the middle. Surface area of the loaded flanks is much lower than the previous design. |
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Posts: 802
| like i said, ryan nailed it... again... well said. |
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