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Will characters that are "con's" for chains come into play with the drive speeds we are talking about (FPM). If this efficiency does make a noticeable difference in a snowbike/sled what characteristics will be noted by the rider in a positive way and are those offset by other factors?ĭoes a synchronous belt drive get more power to the track than a chain-drive. What is the real world outcome of this in our products?.How do those numbers apply to snow vehicles?.Are those for industrial drives, Harley's, sleds, snowbikes?.What are these numbers in referring to?.I don't know, as there has been no engineering based test results shown that show this. I've heard "mythical" numbers claimed like 5% more efficient, 30% more efficient, 50% more efficient. or a silent/HYVO chain in terms of efficiency? How does the Synchronous belt drive compare to a roller-chain. This paper, from Gates, provides a lot of good ammo for discussion. they refer to belt drives "approaching" or "equaling" chain drives. In a lot of literature I've read, including that from Synchronous belt drive mfgs like Gates. but that efficiency discussion never seems to make it into the realm of track dynos or vehicle specific testing. I'm very familiar with this presentation in the sled world of the Polaris snowmobiles and their factory equipped sleds with belt drives. The term "efficiency" always seems to come up. Will this be more susceptible to "hits" on the hill in comparison to a fully shrouded chaindrive?Īlso.I've watched the videos and listened to presentations on the topic of belt drives. Will this be the "Achilles Heel" of the design? Already, the aftermarket is making products to protect this area. protruding past the bellypan of the sled more than any previous year. On the AXYS-mtn sleds, the lower part of the drive hangs down pretty low on the chassis. Will a belt drive be more susceptible to "hits" on the hill in a snowbike as measured from the centerline of the track to the outside of the belt enclosure, and how does that compare to to a chaindrive. What is the width of a beltdrive equipped snowbike kit. All of their 3" track equipped models and the RMSHA inspired ASSAULT SLEDS.ĭurability, or robustness, in the world of snowbikers on the mountain, in terms of impacts, is what will be proven this season in the consumers hands. along with a standardization of parts (economy of scale). Even though a simple longer belt and tensioner would allow for more tooth engagement and slightly less weight. Polaris, the only OEM currently offering a belt-drive in their production sleds still uses a chain drive in many of their mountian-sled models. plus redesigns from the factory and new belt designs.They keep evolving. we've seen failures, and aftermarket offerings to help minimize these failures. not with the relatively low horsepower of an MX bike. by nature.ĭurability of a belt in a belt drive in normal use is not a question for me. there are pro's and con's to belt-drives. but how and why seems to be a discussion that is more akin to a political debate than one of actual application in our machines.īut it sure is a blank canvass in terms of a rational, application based, discussion.īut, like anything else in life. We all seem to be assuming that belt-drives are "better". Lots of folks jumping on the "Belt Drive Bandwagon" in the snow sport world long after the CMXDS was om OEM (Polaris) to the aftermarket. Some good food for a rational discussion.īelt drives, in the sled world or, now, in the snowbikes.are getting a lot of press.
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