check out ebay auction # 3168375293

it is was one of the final versions that Delta came out with.......no t-bar. yet it has fwd movement and side to side all bearing supported on shafts

DavidL,

Couldn't you have just raised the inner ballstud for the camber link to achieve a more horizontal link, and thus a lower roll center, which would give you more grip?

No, Brian, the entire assembly rotates on a hinge pin on each side so raising that link doesn't accomplish anything. This suspension has a hinge pin out near the C-Hub that holds the spindle. All other suspensions for RC cars have the pivot near the center of the car. That way an upper link can be added for proper geometry. Good geometry on this suspension for an upper link would result in a link that is about 1/8 inch long. That length would be almost impossible to build with robustness to survive racing.

cheees David! Easy..............lol

Sorry david, it just looked as if that would accomplish something after looking over the front end...

Anyone here going to the January Jam at RC Madness in a couple weeks time?

I'll be there...

does anybody use a JR Racing z3550 steering servo in there 12L3? i am in the process of setting up my first 1/12 car and thats what i put in it. did i make a decent choice?i am new to 1/12 so i had to take the advice of my local hobby shop.

It's a good servo, ran one for years before upgrading to the KO digital 947. You should be fine.

The JR 3550 is what most of the racers run at our local track. It's fast, centers well and is nice and compact.

MAKE SURE you run a good servo saver on it though, I'd also recommend carrying a spare gear set...just in case. The gear sets are just basic nylon and they're inexpensive...better safe than sorry.

I'm running a JR3550 myself and I BEAT THE CRAP out of it...and I haven't had any trouble...but I still have a spare gear set just in case

one more question. the track i will be running on is about 100' x 50' with a few tight spots but relatively open. if i were to use a monster stock what kind of starting gear ratio should i use? i am not looking for top speeds, something to get used to the car with(never driven a 1/12 befor)i certainly dont want to over gear myself. oh and BTW will the Quantum Sport be o.k. for caual stock racing? i dont have time to really do it competitvly yet ,so i figured
i would start with the sport.

Sean-you can never go wrong with a 1.79 to 1.89" rollout on a Monster on a track about what you described.

Just bring your tree of pinions and change pinions after 4 minutes of practice and go finish the pack with a different pinion. Do that a few times and you'll find a rollout that suits you.

Believe it or not-you can sometimes drive better with your car rolled out higher (more top speed-less punch). Car doesnt feel as punchy out of corners so it can be easier to drive. But gauge if youve rolled out too high by motor temp and runtime. If you dont have the batteries to be geared that high-you wont finish races strong.

Have fun,
Ray

Sean-heres some numbers for you:

2.00" tires 29/100 = 1.82 rollout

1.90" tires 31/100 = 1.84 rollout

1.80" tires 33/100 = 1.87 rollout

I just did this to show that as your tires wear-just go to bigger pinions and you can stay in the same ballpark on rollout. 2" tires are basically new out of package.

uh, i dont really understand roll out. i have always just figured my gear ratio by dividing my spur tooth count by my pinion tooth count. 100 spur-25 pinion= 4:1. how do i calculate roll out?

(tire diam x 3.14) x (pinion/spur) = rollout

Now-if you want to figure out what pinion to run to keep that rollout because your tires got smaller-then:

(rollout x spur) / (tire diam x 3.14) = pinion

thank you for the explanation, that simple equation clears it up nicely