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Old 08-08-2007, 11:18 AM   #1
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Default 30 wt shock oil too light for 1/8 buggy?

I have always run either 50/40 or 40/40 weight shock oil (Associated) in my nitro buggy, so wanting to try something different I rebuilt my shocks with 30 weight all around. Now after putting the car on the ground and pushing down it feels really soft and I'm concerned that it may be too soft for a 7 1/2 pound buggy. My local track is far from well groomed and tends to get bumpy and rutted as the day goes on, so a nice cushy suspension setup should help settle the car but at what cost? There are no mammoth jumps but there are moguls, half-track rollovers, and a whoop section. Any input is appreciated!

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Old 08-08-2007, 11:39 AM   #2
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I run 30wt on rear of my Truggy and it works great. There's really one way to find out if you're too soft or hard, drive it on track. Every track is different so one setup might not work but works great on another track. If you need more help try this website http://users.pandora.be/elvo/. Hope this helps.
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Old 08-08-2007, 11:51 AM   #3
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30 will work good at ur track i run 30 in my kyosho.
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Old 08-08-2007, 12:07 PM   #4
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Every buggy uses slightly different oil. The Losi 8 actually sometimes calls for 25 weight, but that's not the point. Simply try it and see how it works. In really rough conditions I prefer to use a thicker oil because the car will generally bounce over the bumps rather than getting caught in them. It makes it much easier to drive consistently and lets face it, consistent is fast. Also to light on the damping in the rough and the chassis will want to slap. Have you ever hit a bump and in a blink you're thinking "why is my car on its lid?" That's the type of bottoming out you want to avoid on rough tracks.
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Old 08-08-2007, 12:10 PM   #5
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It really depends on your pistons. Basically, the fewer and the smaller the holes are, the lighter an oil you would want to use. I ran AE 40 F and AE35 R on my buggy with 1.6mm two hole pistons on my buggy on a very dry, loose, rough track. I also agree with what was already stated...try running a few practice laps...this is the only way you'll really ever find out what works.
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Old 08-08-2007, 12:20 PM   #6
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Thanks for the input so far...I will definitely put in some track time before I make the call one way or the other, just wanted some opinions first. If it helps I'm running a Hyper 7 Pro (125 ounces full), Mugen big bore shocks with 1.4 pistons, and currently OFNA black springs front/TTR red springs rear but those are subject to change as I am thinking of going to Mugen grays all around. Thanks again!

-rocky b
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Old 08-08-2007, 12:28 PM   #7
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If your car isn't as responsive as you'd like, switiching down to 30 weight from a higher viscosity oil wouldn't be a problem. It's not too low in any way, and it may be required in cooler weather.
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Old 08-08-2007, 09:37 PM   #8
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sometimes i run 25wt in the rear shocks of my jammin....
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Old 08-08-2007, 09:54 PM   #9
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Truhe won the Nitro Challenge with 25wt in the rear.
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Old 08-08-2007, 10:08 PM   #10
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try it and see, i have ran really light to pretty stiff. On my car I was having problems once with the rear coming up bad when hitting this particular bumpy section, I thought I was to soft, So I went stiffer bad mistake. 2 major things happen, one like mentioned above you blow through the suspension travel and bottom the chassis causing it to kick very hard up. or you just have to much rear pack and it kicks it up. try one if it doesnt work then try going the other way. Sometimes certain bumps it dont matter what you try you just have to find a happy medium for the whole track and go with it.
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Old 08-08-2007, 10:08 PM   #11
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I'm running 35 in my 1/8 CRT truggy. works fine.
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Old 08-09-2007, 03:53 PM   #12
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Quote:
Originally Posted by FlyByWire View Post
Truhe won the Nitro Challenge with 25wt in the rear.
Truhe also went with a smaller 56 piston with that 25 weight oil over the stock setup using 55 pistons and 35 weight oil. Using a smaller hole piston (more pack) with lighter oil is more consistant and better in the rough that is the general consenses.
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