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02-15-2018, 08:51 AM | #21 | |
Sr. Product Developer Join Date: May 2005 Location: Fontana
Posts: 786
| Re: Shock Setup Tip for reducing Torque Twist Quote: | |
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02-15-2018, 09:20 AM | #22 |
RCC Addict Join Date: Sep 2017 Location: The OC
Posts: 1,615
| Re: Shock Setup Tip for reducing Torque Twist
Well well well. |
02-15-2018, 10:02 AM | #23 |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Shock Setup Tip for reducing Torque Twist
Great video, thanks Casey! |
02-15-2018, 10:49 AM | #24 | |
RCC Addict Join Date: Nov 2010 Location: England
Posts: 1,603
| Re: Shock Setup Tip for reducing Torque Twist Quote:
I run Gmade shocks on my Ascender's so cant do this unless i find shorter springs. Gamde do a lot of shorter shocks, so springs from them may work and modding an old adjuster could do the trick. | |
02-15-2018, 11:38 AM | #25 |
RCC Addict Join Date: Sep 2017 Location: The OC
Posts: 1,615
| Re: Shock Setup Tip for reducing Torque Twist
What is the purpose of the softer upper spring anyway? For softer bumps? I get it for a full size rig, but a RC car - that is failing me. In otherwords, why not just remove the smaller softer spring and run the spring stop down to take up the space? When I first got my RTR and started setting it up and modifying it per this forum, one of the first things was taking some preload off to let the rig ride lower, then drilled the pistons out and installed lighter shock fluid. And I shaved and polished the inside of the spring separator collar. This all made the suspension work a LOT better, but also introduced noticeable torque twist. Previous to the mods I hadn't noticed and wouldn't have paid any attention. But now with the suspension setup softer, both spring preload and lighter damping, TT gets going pretty good on severe climbs. |
02-15-2018, 12:03 PM | #26 |
I wanna be Dave Join Date: Dec 2016 Location: san diego
Posts: 2,723
| Re: Shock Setup Tip for reducing Torque Twist
I GET IT! just seeing the still from the vid giving it another angle to see what the trimmed adjuster nut does... you can "tune" the helper spring, making it variable rate/travel limiter! very nice, THANKS RICH! |
02-15-2018, 12:43 PM | #27 |
RCC Addict Join Date: Nov 2010 Location: England
Posts: 1,603
| Re: Shock Setup Tip for reducing Torque Twist
Actually I just remebered on my land rover Ascender, I use 103mm shocks but with the 93mm springs to drop it a bit. Only on the front mind, but it helps with CoG.
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02-15-2018, 03:33 PM | #28 |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Shock Setup Tip for reducing Torque Twist Smaller bump compliance and less chassis rock/upset on technical climbs/descents. You can do that, but then you lose some soft flexiness, I tried and it ended up either too stiff flex travel wise especially with rear swaybar (even with my softer home-made bar). With softer springs TT is worse and it tends to tuck the rear axle and roll over backwards on steep climbs. Last edited by Natedog; 05-31-2018 at 02:28 PM. |
02-15-2018, 03:33 PM | #29 |
RCC Addict Join Date: Nov 2010 Location: England
Posts: 1,603
| Re: Shock Setup Tip for reducing Torque Twist
This video shows the setup on full size 1:1 shocks, so gives a better view of how it works. Rich posted this on the Farcebuk page so not my idea. https://www.youtube.com/watch?v=QWTLe14Mbm0 Last edited by M1tch; 02-15-2018 at 03:50 PM. |
02-15-2018, 05:04 PM | #30 |
RCC Addict Join Date: Sep 2017 Location: The OC
Posts: 1,615
| Re: Shock Setup Tip for reducing Torque Twist
I ordered a couple of sets of shock bodies for the collars today, and a couple of sets of new pistons. The latter for updating damping. I now see four different piston configurations - the pack I got today had 3 holes in two of them and 1 hole in two of them. My original kit had 2 smaller holes in all of them, and the latest kit had notched pistons. |
02-27-2018, 11:51 AM | #31 |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Shock Setup Tip for reducing Torque Twist
Shock collars as per Rich Trujillo's mod, thanks Rich! Made them by sanding off the ridges on outside of spare shock adjuster collars. As the shocks compress, the floating spacer between the upper and lower springs contacts the collar stopping the action of the short softer spring and forcing the stiffer lower spring into action. Even though the RTR (and kit) upper and lower springs are silver/medium, the lower long spring is a stiffer rate spring, therefore these force the two-stage progressive setup into action! Works great on the bench and easy to adjust the amount of travel where the longer firmer spring is forced to do the work. Shock Setup Tip for reducing Torque Twist After test crawling the other day and bench testing, I've put the front shocks back inboard to get little more flex back that I was missing. Current spring setup is silver/silver stock springs on all four shocks, collars only on the rear atm. I left the collars full height and screwed them on from the bottom of the shocks and gently snugged up against the main aluminum spring preload adjuster. For my truck and driving style, this is perfect, truck sits with lower arms just above parallel to the bench, I'm getting little more flex than with my previous setup, and the lower stiff springs are being forced to do work, love it! More tuning to come. |
02-27-2018, 12:04 PM | #32 |
RCC Addict Join Date: Sep 2017 Location: The OC
Posts: 1,615
| Re: Shock Setup Tip for reducing Torque Twist
The top caps can also be cut down to use as collars. Did a second rig that way last night. A little more fiddly, but work. The knurling is very hard to grind off. I cut them down as much as possible with a blade then hit the grinder with them. More melting than grinding. Funny thing is I get as much twist from drag braking as I do from throttle. It just twists the other way. |
02-27-2018, 12:23 PM | #33 | |
Newbie Join Date: Jun 2017 Location: US
Posts: 28
| Re: Shock Setup Tip for reducing Torque Twist Quote:
Sent from my SM-G955U using Tapatalk | |
02-27-2018, 12:48 PM | #34 | |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Shock Setup Tip for reducing Torque Twist Quote:
I sanded them down with benchtop sander, took about 10 minutes to do two, but yes bunch of dust and some melting lol. Yes, but it's not as detrimental and careful throttle use helps. I did my rear shocks, but am thinking about doing the fronts too because of the reverse TT. | |
02-27-2018, 01:00 PM | #35 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: Shock Setup Tip for reducing Torque Twist
I rigged the collars up so that I could chuck it up in a cordless drill, then I took it to the fine side of a double bastard file. It was slightly off center but got it close enough for me to touch it up with the file by hand.
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02-27-2018, 02:17 PM | #36 | |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Shock Setup Tip for reducing Torque Twist Quote:
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02-27-2018, 02:31 PM | #37 |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Shock Setup Tip for reducing Torque Twist No, that's the plastic shock preload collars that I sanded smooth to use for the two stage setup. They do look kinda that way due to the sanded finish. Edit: I'll see what I can do about the look. Last edited by Natedog; 02-27-2018 at 05:02 PM. |
02-27-2018, 03:21 PM | #38 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,935
| Re: Shock Setup Tip for reducing Torque Twist Sorry, I though the modified part was the part in between the two springs. I'll have to refresh my memory on this mod. Thanks.
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02-27-2018, 05:14 PM | #39 |
Rock Crawler Join Date: Jan 2014 Location: Frog Lake AB, Canada
Posts: 696
| Re: Shock Setup Tip for reducing Torque Twist
I get it, it’s like how a proline powerstroke shock works, only the part that separates the two springs, and the preload stopper aren’t one piece. Very nice tech tip, might use it on my other ascender.
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03-06-2018, 08:07 AM | #40 |
Rock Stacker Join Date: Feb 2017 Location: Tehachapi
Posts: 53
| Re: Shock Setup Tip for reducing Torque Twist
Are you just sanding the knurls even with the adjuster or removing the whole section?
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