RC10Talk - The Net's Largest Vintage R/C Community

Hi there i have dug out the old cat that i got in an trade last summer.
I changed the plastic shockbodies to tefloncoated alu and uppgraded with some titaniumracing bits.
As i was working at the car i noticed thet the previuos owner had som standing shocktowers and i ask myself should i stay or should i go....so any suggestions from schuie owners wich one is the best ??? Feels more right to standing but since i have never driven an Cat2k/ec i had to ask.

mvh Isobarik

The Schumacher team drivers I've spoken to swear that the original CAT 2000 with the stand up shocks was the best of the lot. Conventional chassis dynamics theory also says that stand up shocks are superior.

From my limited experience of driving the CAT 2000 (about three races) versus the CAT 2000 E.C. (much the same as the S.E.), the laydown shocks made the car feel very easy to drive, but ultimately they don't make the car faster and also cause big problems with jumps - you really compromise the handling over the bumps to get the chassis stiff enough to stop it bottoming out and landing badly from big air.

Jukka steenari won an euro with laydown if dont remember it wrong.
But i think i will convert it to standings anyway.
I have taken some alu bodies instead of the plastic that came with the car. Does the ec/se and cat2k use the same lenght shocks ??? 100mm in rear and 80mm in the front ???

mvh Isobarik

The CAT 2000 E.C. (stands for "European Championship" - after the championships that Jukka won) wasn't a bad car, but there's a reason why 95% of off-road buggies have shocks at more conventional upright angles

Not sure about the shock lengths, would have to check the shocK shaft part number in the manuals & compare them.

I think it has a lot to do with the type of tracks you will drive. The lay down shocks would probably be better for hard packed dirt and grass with more rounded jumps and bumps or even indoors. But for high traction blue groove tracks with big jumps and table tops, muddy or dusty tracks I think you will have trouble balancing traction vs. ability to take big hits. Basically what minichamps said.

laydown looks better

Cue Jeroen subtly dropping in photos of an absolutely awesome piece of R/C artwork! That's got to be one of the best cars I've ever seen

Why can't modern racing buggies look that good?

Jeroen are those dampers from the sx and how long are the front and rear dampers.

mvh Isobarik

isobarik wrote:Jeroen are those dampers from the sx and how long are the front and rear dampers.

mvh Isobarik

Hi Henrik

Yes , these are SX shocks.
They are a direct fit , front shocks are 70mm and rear ????

Had the shock towers at home so i could turn it around to standings instead .
yes i know its only fiberglass but it was in the box so i just tried do it.
Not modded the front yet missing some parts.

With and without the body



Kind of swissed chassi



mvh Isobarik

Somebody liked drilling holes

that's just plain wrong..i like the laydown better...i also bought all the graphite before i even bought the car

The principles are pretty simple realy. Take an 1/8th scale nitro on roader, the shocks are layed right over for the heavy cornering the chassis will suffer. The car is designed around a very flat and super high speed type of racing.
Now think off road. Bumps, jumps etc...I'd hate to say it but shocks standing up (or close too it) perform better and thats why even the most modern up to date designs incorporate the upright layout. While some of the laydown type designs have proven well throughout the U.K. and Europe you'll find their tracks a little different from those found in other parts of the world.
While i was hooked on the E.C. years back i now own the original 2000 by choice.

J - I agree. EC felt easy to drive on grass but it's not the fastest car out there, especially if the track has big jumps. Mine kept bottoming out and then flipping over on it's arse.

I returned it to laydowns all around.

I got an new reciver and i had to try it so i mounted in an servo reciver and an old Tekin 411p, 13 double trinity and hardwiered it to an old sanyo 2000 batteri that hadnt been used since 98 or something like that.

I couldnt find 1 singel 48 pitch pinion so i dug up some 64 pitch spur an hpi exactly 106 teeth and now the problem was to have an big 64 pitch pinion the biggest i found was 23 but i was never near to touch the spur.
When i was digging and digging in to stuff to find some pinion that would fit or an bigger spur i tried to fit the one from my tf4r but the hole didnt match but hey there in the tf4r box was an 36 pitch pinion inside and what the heck it did touch the spur so i used it.

When i looked at it and drove the car it was very smooth and quiet and i was woundering about how much overgeared it was.

Any way the batteri didnt last long and the seedo was hot but hey it worked.
So this morning when i was searching for an manual to the Cat ec to find out how much over geared it was.

6,14 was when you used an 27 T

and around 11,97 when using 11 T

And i was using 5.88 ha ha

no wounder things got a bit warm.

mvh Isobarik