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#151
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Re: Back for more..VEXpro 2014 Product Unveiling
I would wager they are actually making the claim that HTD is stronger than the traditional trapezoidal tooth, and not gt2. This is just conjecture though.
EDIT: I'm wrong, rewatched video. He was referring to gt2. Last edited by AdamHeard : 12-12-2013 at 14:55. |
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#152
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Re: Back for more..VEXpro 2014 Product Unveiling
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#153
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Re: Back for more..VEXpro 2014 Product Unveiling
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What width were the belts? Did you use different pulleys or the same type? Which kind? |
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#154
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Re: Back for more..VEXpro 2014 Product Unveiling
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The belts were 9mm wide, 5mm pitch. All pulleys were the same aluminum 24 tooth cut from the same stock, all the same width. |
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#155
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Re: Back for more..VEXpro 2014 Product Unveiling
GT2 pulley stock is different than HTD pulley stock, which is different than regular timing belt stock. I don't think it's fair to compare belt performance when at least one of the belts is running on a pulley it wasn't designed to run on.
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#156
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Re: Back for more..VEXpro 2014 Product Unveiling
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http://www.gates.com/brochure.cfm?br...cation_id=3881 http://www.gates.com/brochure.cfm?br...cation_id=3881 |
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#157
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Re: Back for more..VEXpro 2014 Product Unveiling
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#158
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Re: Back for more..VEXpro 2014 Product Unveiling
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And making the assuming that a lower required belt preload for the same transmitted power would mean that the belt would be less likely to ratchet. This is a pretty safe assumption because the preload is the belt tension needed to maintain contact given a transmitted power so lower preload better the teeth are at self maintaining contact. Quote:
Looking on the website and at the offered belt profiles they do not offer exactly GT2 and HTD belts so i picked similar profiles, XL for GT2 and 5M for HTD. Profiles can be seen here, http://www.transdev.co.uk/pages/belt...prene_main.htm Quote:
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#159
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Re: Back for more..VEXpro 2014 Product Unveiling
A few of the cad models are messed up. The color of the models was a nice addition, but the wrong parts are used sometimes, especially in the shafts for the gearboxes. Often times they are too long and go through a motor. See the 3 CIM PTO box.
I'm also confused by the wcp 3 cim pto design. It's much thicker than it needs to be. To begin with, the distance the shifting dog travels is about twice what it needs to be. A quick reconfigure of the design let me slim the gearbox down by 1.25". There's a ton of wasted space. Also, the outer plate needs to hold 3 bearings, 4 standoff mounts, and 4 cylinder mounts, yet it has spots for mounting the CIMS. Again, this could be make significantly smaller. I'll post a picture of what i'm talking about in an hour or so. |
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#160
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Re: Back for more..VEXpro 2014 Product Unveiling
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#161
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Re: Back for more..VEXpro 2014 Product Unveiling
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Parallel symmetrical plates allow for quicker and more efficient fabrication, I would imagine. |
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#162
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Re: Back for more..VEXpro 2014 Product Unveiling
Here's what I'm talking about. I got the gearbox slimmer by 1" (3.5" to 2.5"), and switched the standoffs to screws in the CIM mounting holes. My design doesn't have bearings, but you get the idea.
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#163
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Re: Back for more..VEXpro 2014 Product Unveiling
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I think you ought to read the product description again. That configuration is intended for a typical WCD setup. That is why there is a space for your sprockets. ![]() . Last edited by Akash Rastogi : 12-12-2013 at 15:55. |
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#164
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Re: Back for more..VEXpro 2014 Product Unveiling
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Also space is required for the gear/sprocket/pulley attached to the Versadog, Hence why this kit is listed as an option to only work with the WCD version of the 3 CIM DS. |
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#165
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Re: Back for more..VEXpro 2014 Product Unveiling
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