Since the silicon shock oil does not compress, a piggy back shock will do nothing to lessen the pressure on the bladder. In full scale, piggy back shocks are mainly used to help cool the shock fluid. They are nearly worthless in small scale applications.

piggy backs
 

apart from cooling..the res on a piggy back shock is designed to have an expansion area, usually gas filled and seperated by a piston.
as the shaft enters the shock the oil passes from the shock into the res, this will push the piston down and compress the gas.
it allows a totally air/gas free shock so the oil wont foam up. full scale piggy back shocks do not use a baldder.

this is why rc shocks have a bladder, a small area full of air so the pressure has somewhere to go

as you say and quite rightly so...usually piggy back rc shocks dont really work very well, tbh making them work well in minature would be very costly...far out of reach of our price range...no to mention servicing them and recharging the gas and bleeding out all traces of air.
chris.

Gmade came out with some piggy back shocks recently that actually look like they might work as intended. Adjustable pressure on the piggyback, and the spring should allow for some of that pressure to be absorbed instead of blowing out a shock bladder.

But I don't know how well these will function. As we all know the transition to small scale doesn't always work out. Lot of tiny little o-rings, more chance of leaking.

http://www.gmade.net/bbs/zboard.php?...desc=asc&no=28

Alien have you attempted to join the UE forum? Either way if you want I could help by letting MM know. You could get more advice there at least on this issue.

Hi Zack... I do have membership at UE, but i seldom use it... Are you thinking the members may have some insite over there?


Alien

sweet shocks
 

hey thanks for posting that up simplechamp...they look awesome.
i was looking into some new shocks for my e-maxx and for the price they may be worth a shot.
they are only a few pounds more than than the traxxas ultra shocks :party:.

out of all the piggy back shocks i have seen they do look like about the best design...mind you the delrin piston looks like it will wear out fast but i can pop them off on my machines quite simply...and i have some ertalon 30% glass fibre nylon here to make pistons from too :intello:.

how about giving those gmade shocks a try angry alien ?

3.5mm shaft....yummy....i want them :surprised:

what do you guys think ???

they do some nice beadlock rims and tyres too...dam im dribbling all over this laptop :mdr:
thanks
chris.

Wow, those gmade look like the real deal. The Rc piggybacks I usually see (cheap cheap cheap stuff) just have the piggy reservoir for...bling I guess. Those look much more similar to full scale stuff, I'd love to know how well those ones works!

yummy shocks
 

well i found a u.k. supplier...they are a korean company.
£23.99 per corner...i like that :intello:.

i hear ya brainanator...they normaly just jam a bit of foam in the res and call them piggy backs :rofl: i mean come on...what exactly is that supposed to achieve

after i shed new rubber on my real car...man i looked the other day.. my car tyres are nearly bald :gasp: i got better treads on my e-maxx.
thoses shocks are mine :diablo:.
chris

Wow those are nice! I found the 103mm versions on ebay... not sure i will jump into them at this time though... but they sure look great... thanks for sharing simplechamp...


Alien

I am thinking about picking up some of the 93mm for my SCX10 scaler. For me it's more for looks, but it would be fun to play with them just to see how they work.

I wish I knew what rate springs they come with. They show these shocks as being used in all different kinds of vehicles, but the spring rates required are going to vary quite a bit. I'm sure other springs can be used, but it would be nice to know what ones they come with. Judging by that video on the Gmade website, for a scaler that would need super soft springs you might even be able to skip springs altogether and use the pressure adjustment on the piggyback to provide enough rebound.

Also, CKRC Crawlers has these shocks if people want to order inside the US. I think the Ebay ones were direct from Gmade in Korea?

those shocks look cool, bookmarked that, after 4 new tires for the jetta, paying off the credit card for a fishing trip to colorado and a week in sydney for 2 maybe I can recycle beer cans and pick up a set before the snow starts falling here

I share the same concern Champ... it seems that i would need four shocks for a maxx setup... my truck won't work with four at this time...

I am considering two things to fix my issue (for now)... the first is to add the foam rubber piece behind bladder... the second is to setup
the shock for a very low rebound... I going to try this setup in the weekend and see how it goes...

Alien

Since went off on a slight tangent regarding new shocks... just curious, has anyone experienced 'Ofna Big Bore' Shocks on a Maxx or any other vehicle similar?

Alien

Are you talking about the older 13mm big bores, or the newer 16mm big bores? I always thought UE supershocks were rebranded Ofna 13mm big bores. Could be totally wrong, but they look alike to me.

In another note, I ordered some of those Gmade piggybacks to try out.

You and me both... I am not so sure what really makes them distinct... I was wondering if the performance of the 16mm was much better than the 'Super shocks'...

Alien