Yet another DuneRunner :)

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Yes the silencer will make a difference in sound and you will be able to lean out a little more for more power its great!!!!!!!

Silencer arrived today

Just gotta find time to fit it

Mine exits straight out the left side

Doesn't have a bend like yours
 
@Phil Do you have a smartphone? There are a lot of apps available that measure the level of sound, in dB. I'd be curious of a clear comparison between the "no-silencer" and the "silencer" options. If you can, it would be perfect to make this comparison both when idling and at top rpm. As an example, I took this photo from 2m away on stock setup, I have yet to do it again with the JetPro but I'm expecting to see quite a big difference :) )

Sound_stock.JPG
 
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I'm surprised it's only 75Db

Sounds a lot louder to me!

The only way I know to adjust ride height is screw the springs down.

Mine was low in the back out of the box.
 
Yes, my rear is also low and the front is pretty high. As you can imagine, adding the huge jetpro hanging at the rear of the car didn't help much :) When it's doing donuts or taking tight turns, the inside front wheel goes in the air and I'd like to minimise that. When you say "screw the springs" do you mean rotating the large nuts at the top of the shocks?

Phill said:
I'm surprised it's only 75Db
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It was also in an underground parking lot, so it's probably even lower outside. I'll redo this with the jetpro in the same conditions.
 
Yep screw the nuts down to compress the springs.

Naturally it will ride a bit more solid in the rear but it will lift it.

I don't run mine in the street any more because of the sound level.

Hopefully the silencer will make it more neighbour friendly
 
Ok, I'll give it a try, thanks. Btw, quick question: do you notice a difference when pushing down on the front shock tower compared to the rear? The front seems a lot harder to push down and bounces back immediately (i really like the feel of the front suspension) while the rear is much easier to push down and bounces back much slower, maybe not even all the way up. It feels like the front and rear springs are the same, even though there is obviously much more weight on the rear.
 
Ice_2k said:
Ok, I'll give it a try, thanks. Btw, quick question: do you notice a difference when pushing down on the front shock tower compared to the rear? The front seems a lot harder to push down and bounces back immediately (i really like the feel of the front suspension) while the rear is much easier to push down and bounces back much slower, maybe not even all the way up. It feels like the front and rear springs are the same, even though there is obviously much more weight on the rear.
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Very true

The rear feels dead compared to the front

Maybe someone can tell us if upgraded springs are available.

The kid down the street from me has a KM Baja and his springs seem to have a lot more life in them than mine
 
there have been many posts on here from a lot of different people finding their shocks not to have been filled properly from factory. the amount of oil and type make huge differences in the way a shock will compress or release. most just play around with different types and weighs of oil until they find the feel and ride they're looking for. the cause of your weak rear shocks may only be a low oil situation.
 
I think the issue here is more about the springs then it is about the shocks... it's very easy to keep the rear compressed while the front really wants to get back up.
 
it's easy enough to tell if the difference is just in how much the springs are compressed by counting the threads above or below the big blue nut that squeezes down on them. check to see if it's the same as the front.
 
Get stiffer springs. Turning the nut to compress the spring will definitely stiffen the rear suspension and raise the buggy but keep in mind that it will also shorten your suspension travel.
 
That's what I'm looking for. I create a new topic here to get suggestions. Feel free to pitch in :)
 
That sounds about right compared to my 87 indoors. I'm really curious what you're gonna get with the silencer. The one thing I don't like about the silencer is that it requires another coupling...
 
Ice_2k said:
That sounds about right compared to my 87 indoors. I'm really curious what you're gonna get with the silencer. The one thing I don't like about the silencer is that it requires another coupling...
Click to expand...
The 2nd coupler shouldn't be a problem as the gasses should be cooler there.

Gasser should be able to tell us more
 
I ended up ordering the DDM +20% springs, hopefully they'll be a good match with my Dunerunner's rear. I did some tarmac running yesterday and the handling is really not good if you want anything more than bashing around. Definitely wouldn't cope well with a circuit. Whenever I try to take a tighter turn, if I'm going too fast it just understeers badly, if it's not very fast but I get on the power the rear lets go, oversteers like crazy and starts doing donuts. In those moments, the rear is very low, the inside front wheel goes into the air and the front diff obviously sends all the power to that airborne wheel, so the car basically becomes rear wheel drive. While staying on the power, I can do whatever I want with the steering, the car will just do donuts until I let go of the gas. I'm pretty sure that keeping that front wheel on the ground will dramatically improve handling.
 
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