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Serpent F110 SF4

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Old 08-17-2018, 08:36 AM
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Default Serpent F110 SF4

Wow!
Red RC ? Events Chassis Focus ? David Ehrbar
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Old 08-17-2018, 01:10 PM
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Now I know which car I will impatiently wait for.
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Old 08-18-2018, 11:45 AM
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This thing is slammed and the mass is very centered. Almost an entirely new design... not even sure what's happening in the rear yet. Serpent may have just solved my too many manufactures in my garage problem assuming this new rear end can be squeezed into a 12th scale.
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Old 08-18-2018, 12:05 PM
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Ok I’m interested. Been impressed with my other Serpents. Always room to add
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Old 08-18-2018, 01:20 PM
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Why the reason for such a big opening on the front end?
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Old 08-18-2018, 03:32 PM
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The opening is for the other servo position.
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Old 08-19-2018, 12:59 PM
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David Ehrbar with his S4 was really strong at Welkom. A very positive start for such a new design.
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Old 08-20-2018, 05:00 AM
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So how is that rear axle working? Artickle mentions "bearings" - maybe bearings in slots, which are hidden in side spring mounts?
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Old 08-20-2018, 08:02 AM
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The photo's are conveniently blurry in all the right places so it's pretty hard to tell but those spring mounts are very large - room for bearings/slots etc.
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Old 08-20-2018, 11:17 AM
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I just noticed this picture - it does appear to be a bearing inside a slot. Strong, simple, smooth, no tweak and more consistent geometry. Very nice.
http://events.redrc.net/wp-content/u...sis-david9.jpg
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Old 08-20-2018, 12:22 PM
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Originally Posted by DavidNERODease View Post
I just noticed this picture - it does appear to be a bearing inside a slot. Strong, simple, smooth, no tweak and more consistent geometry. Very nice.
http://events.redrc.net/wp-content/u...sis-david9.jpg
I have notice this also. Seems this is the trick. However I am kind of not feeling convenient with mechanical setup where a bearing has to run in a slot in which you need to keep very tide tolerances to avoid slop or seize.
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Old 08-20-2018, 12:54 PM
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Originally Posted by sbd View Post
I have notice this also. Seems this is the trick. However I am kind of not feeling convenient with mechanical setup where a bearing has to run in a slot in which you need to keep very tide tolerances to avoid slop or seize.
The design only needs one side of each "slot" to work (because the centre pivot prevents fore and aft movement). So it could be designed with significant clearance to prevent a load bearing sliding situation on the bearings outer race. The bearings only need to be constrained by slots for big impacts - to take the load off of the centre pivot.
If it's designed and manufactured properly it will be incredibly smooth with no chance of seizing due to load bearing sliding surfaces. We'll see. I'm wondering if this is similar to what RSD has been testing?
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Old 08-20-2018, 12:56 PM
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If anything, it looked like David had a better car than Jan in Final 2 of the world cup. Jan seemed to be pushing the limits a bit more however and his car was a bit loose, while David seemed to have a more balanced race car.
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Old 08-20-2018, 01:11 PM
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I can't see the centre pivot design however and the screw pattern for the centre pivot looks quite different than what I would expect. It could be that centre pivot does not constrain fore/aft movement in which case the slots would have to be perfect. I was pretty sure an IF11 was in my future but this new Serpent is super exciting.
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Old 08-20-2018, 01:14 PM
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Originally Posted by ixlr8nz View Post
If anything, it looked like David had a better car than Jan in Final 2 of the world cup. Jan seemed to be pushing the limits a bit more however and his car was a bit loose, while David seemed to have a more balanced race car.
Yes David had the car to beat Jan. David's car looked more stable under braking and faster in the tight corners.
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