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Thread: Suspension settings

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Old 02-09-2016, 05:39 PM   #1
Rock Stacker
 
Join Date: Jan 2016
Location: Australia
Posts: 56
Default Suspension settings

Hi guys. First post on here and I’d like to say what great forum you have

My post is about suspension settings. I did search and read lots of threads but couldn’t find exactly what I’m looking for. I also understand that everyone will have different preferences in regards to how their Hammer is set up, so I’m more looking for guidance as to whether I’m on the right track.

Some background - I just purchased a V2 RTR Hammer and intend using it for a bit of everything, as an all rounder, and have no preference to do crawling over trails. So far I’ve added 500K oil to the front diff, added the medium sway bar to the rear and light sway bar to the front. I’m in the process of making my own rear diff truss too to raise the trailing arms. The RTR Hammer doesn’t come with threaded / adjustable shock bodies so I’ve just switched out the stock shock bodies with threaded ones, kept the stock springs and added 45 weight oil to the front and rear shocks.

I noticed in stock form the front suspension was noticeably harder than the rear suspension, which seemed very soft and loose.

By adding the 45 weight oil it seems to have firmed up the rear and softened the front. But on the front now with the threaded shock bodies I don’t seem to have very much adjustment to compress the spring. I’ve wound down the front spring as much as I can, but they aren't as compressed as they were when I got the car as an RTR. By adding the threaded shock body I reckon I’ve lost adjustability, rather than gaining it - if that makes sense. The suspension now feels more 'even' between the front and rear compared to when I first got it, but there is noticeable droop when setting the car down, and picking it up. In the stock form when I pushed down on the front of the car it use to pop pretty well back up and have no droop. This is the same issue in the rear as well, although I still have heaps of adjustability left in the rear to compress the springs further to offset this (I'm guessing).

Sorry for the long post, but I guess what I’m asking is how should the suspension be set ideally? Should the suspension be set so it rebounds such that it has almost no droop, or should there be some amount of droop, like would occur in a real vehicle? The more droop though, the less clearance which leads me to think that if I wanted to firm / raise up the front now I’d need to look at fitting firmer springs in the front.

What are your thoughts? I hope I've made sense

Thanking you in advance for your help.

Last edited by Rotare; 02-09-2016 at 05:43 PM.
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Old 02-09-2016, 07:56 PM   #2
Rock Crawler
 
Join Date: Jul 2005
Location: Playing with toys with my son's
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Default Re: Suspension settings

Well welcome to RCC then.

I would say the 45wt is to thick for the front. I also would not run that thick in the rear but 45wt in the rear is not as big of a deal and can help with torque twist. The factory oil is somewhere around 30wt I would say. I run 25wt in my boys TH that still has stock cantilever setup, with the adjustable bodies as you have and it has less damping than it did stock. The front springs on the V1 RTR at least were entirely to stiff. I went to a hobby shop with the front spring and matched them to springs that were softer. I wish I could tell you what they were off of, but it was awhile ago when I first bought my TH and I can not recall. Although I have seen that now Vaterra has option spring part numbers for the TH.

Front ride height I say should be where the axles are flat or almost flat.
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Old 02-09-2016, 08:46 PM   #3
I wanna be Dave
 
Join Date: Oct 2010
Location: Caldwell ID.
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Default Re: Suspension settings

Welcome to the site.

I have the kit version...

Stock oil is 32.5 wt.
A arms level, for racing and best overall performance.
The collars on my front shocks are completely topped out and the front is plush enough.
The rear has so much travel compared to the front its able to have very soft suspension and work very well.

It sounds like you are off to a good start on tuning your rig.
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Old 02-09-2016, 11:20 PM   #4
Rock Stacker
 
Join Date: Jan 2016
Location: Australia
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Default Re: Suspension settings

Awesome. Thanks for the response.


So stock oil shock oil is 32.5? The build kit manual for the Hammers (in the set up section) suggests 60 & 70 weight oil for the stock shocks front and rear. Hence why I thought 45 was a compromise


Thanks for the tip about the axles / A arms being in a flat position


Taking your advice on board I'll have a little bit of a play around as it is, then try some lighter oil.


Cheers.
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Old 02-09-2016, 11:55 PM   #5
Quarry Creeper
 
Join Date: Feb 2016
Location: Australia
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Default Re: Suspension settings

I had this same question when I first got mine, i put 45w in front and rear but I didn't fill them front ones up 100% so that they were still soft enough to form around rocks OK.

I think I am going to buy the soft springs and go from there.

I want a set of upright shocks but in Australia I'm looking at OVER $100 just for the mount not including shocks :(
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Old 02-10-2016, 01:52 AM   #6
Pebble Pounder
 
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Default Re: Suspension settings

I've been running 20 weight oil in 85mm GMade reservoir shocks limited to 80mm length using their softest springs with the OE shocks in back.


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Old 02-10-2016, 08:22 AM   #7
Quarry Creeper
 
Join Date: Sep 2010
Location: appleton
Posts: 357
Default Re: Suspension settings

You can use an Axial Yeti front shock mount (not the xl). It will bolt right in and it is much cheaper than any other option

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Old 02-10-2016, 09:38 AM   #8
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Default Re: Suspension settings

We're u able to modify your cage body to fit with that setup?
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Old 02-11-2016, 11:00 AM   #9
Quarry Creeper
 
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Default Re: Suspension settings

Not my setup. Best picture I could find for you. I don't know how it fits. I see in other pictures though that the shocks come up through the hood

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Old 02-16-2016, 04:49 AM   #10
Rock Crawler
 
Join Date: Feb 2015
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Default Re: Suspension settings

I am most of the way through fitting a BlueMonkeyRC front suspension conversion with traxxas bellcrank steering. There is a serious lack of instructions. I think I've pretty much got it sorted now though. Just gotta finalise my front shocks. What is everyone using? Recommendation is 85mm.
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Old 02-16-2016, 10:20 AM   #11
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Default Re: Suspension settings

Where did u get the blue monkey mount I've been looking for one?
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Old 02-16-2016, 08:42 PM   #12
Quarry Creeper
 
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Default Re: Suspension settings

Quote:
Originally Posted by wblteen View Post
Not my setup. Best picture I could find for you. I don't know how it fits. I see in other pictures though that the shocks come up through the hood

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I know its not yours etc, but any idea what shock length they are running?
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Old 02-16-2016, 09:13 PM   #13
Rock Crawler
 
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Default Re: Suspension settings

Quote:
Originally Posted by Lochrie2 View Post
Where did u get the blue monkey mount I've been looking for one?
Guy I bought the THs off already had it new in the packet. It was on the BlueMonkeyRC website until 2 weeks ago. I have been told the gcm one is better and erie products mskes a nice bellcrank setup for it.
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Old 02-16-2016, 09:41 PM   #14
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Default Re: Suspension settings

The GCM one is really nice and so is iries bellcrank. But I really like the look and price of the Blue Monkey. I think the gmade 85mm piggyback shocks r the way to go great price, performance and look!
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Old 02-17-2016, 08:57 AM   #15
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Default Re: Suspension settings

85mm

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