Paul, you're on the right lines with either of your suggestions - and to be honest, i'd probably look at both. I have less washers in the front of mine, and more toe in

Its on power rear traction you want I reckon.

Rear toe in, raise the rear diff, less antisquat, longer rear camber link. All should help - do 1 at a time and do another run making notes on paper so you can go back.

Do try my posted setup, its exactly what you are describing that I had to start with and its easy to dial out. ;)

????
 

All

I was going to try Nathan Waters set up from the F3's.. And was putting 2mm anti squat washers at the rear but found the wishbones catches on the chassis???? I have checked everything is in the right place??

P

Sounds correct it just needs a little bit of attention with a dremmel.

Dont go too mad just thin the top of the chassis of a fraction until it doesn't catch anymore this is what i did when i had the car and i know others have done to theirs.

Natha Waters Set up...
 

Also the ctr to ctr, (of ball cup) camber length is 46.5mm which causes the servo horn to foul on the batery posts.... Is this another mod? Or are people using a slightly differant length?

How far would I raise the rear diff if I was going to do so? So far my car is great! But Id rather learn what to do now in case I need to make a few changes:thumbsup:

Thanks

There is no middle ground for the diff position - there is only high or low, you just turn the diff cams around. Make sure to not loose the belt tension while doing it.

When I am home I will confirm exactly where the dot is on the cam in relation to the gearbox - this should be about right for all.

Ohhhhhh. Ok I get it now. Haha, I was thinking of tensioning the belts, not the high/low.

Thanks!:thumbsup:

RE: Servo Horn
 

What effect on the the steering does having the the linkage in the hgh or low hole on the servo horn.

It will theoretically speed the feel of the response of the servo - as the servo will have to move less across its arc to give the same amount of travel. Theoretically this could "speed up" the feel of the steering - certainly a not a good thing if your car feels a little twitchy!

Cheers

Darryn

cat sx phil booth edition
 

any one says which oil is used on original build shock (front and rear) for cat sx phil Booth?
thanks for answer

i stand to be corrected here but i am led to believe its 30wt front, 25wt back

Yep think it's 30/25 like the other guy said!

Guys, started running my Booth Cat, done a few rounds at Bury and again yesterday at Worksop (running a tamiya too). Started everything stock, then yesterday tried softening springs, and also then a rear roll bar. Observations/issues are:

1. On the higher traction Bury track it was ok but slightly lacking in side bite, which got worse on the lower grip surface at Worksop. Even dropping to yellow rear springs and red front it felt almost too stiff for the low grip surface.

2. Putting the roll bar in for the final, it really threw the car out taking off some jumps, the rear kicked right up on take off. Anyone else found this with the roll bar or might I have another issue I've not noticed?

Any help on a setup which might give more bite all round much appreciated!!

Dave,

This is a different issue. Running yellow springs on the rear and 25wt means that you more than likely bottomed out going up the jump. The rear roll bar will allow the car to hold its shape better through the corners and when you land, stop the car from moving side to side when it pulls away. It wont make the rear kick up on take off.

Ive done some running at Bury over the winter, pm me and ill drop you my setup with a few tweaks which might better suit you.

Si

Hey Si, thank you for your advice yesterday mate. Your right that my car doesn't pivot, I did dial it out ages ago as the pivot I was getting was snatchy. Bringing some back with roll bars should help like you said, but putting the thin one on the rear for the final didn't seem to feel any different. Infact I couldn't even feel that I had taken the front one off either! :blush:

It may be because my damping is heavier than yours, I may lighten it up a little for Worksop just to try it.

No worries mate. I ran my standard setup yesterday, 30 on 3 holes grey springs on the front, 25wt 3 holes red on back with a rear anti roll bar. I think u are too damped to be honest. Go softer and run throll bar, it stops the back collapsing over ripples and through the corners, but will allow you to generate the grip by running softer.

Yesterday was the best my car has been at Bury, and ill be running that setup at Worksop sunday.

Si

I'll try that next week, im doing my shocks tomorrow.

hello,
which result if y use the outer hole on wishbone for mounting shock (for stability of car and for jump) ?
Thanks for answer

;);)

Hi Chris,

I tried your indoor setup, worked niiice. This week, I'm going to try Matt White's setup. Between yours and Simon's, they both have been great starting blocks at the track.

My Cat is getting more in-tuned with my driving style. Thanks for the setups.

What would the benefits be in fitting the front 35T over drive diff?

1. More front traction because the front wheels spin faster compared to the rear. I use it sometimes on very bumpy dirt tracks so I can "pull" the car out of trouble.
2. sometimes also usefull to compensate when using smaller diameter front wheels when you don't want to use a oneway.

Has anyone used the alloy 7.5 Degree Yoke for indoor carpet? If not, when would you use it, for what type of track?

hi,
Witch tyres and insert are you using on wet astro (or when it is raining)?

Pink or green ballistic mini pin.. Pink in wet conditions and green between wet and dry.. insert, I will those a medium insert = green shucmuacher or similar

Me and Mossy are using them all the time now, they are just an all round improvement for all conditions and I highly recommend them! :thumbsup:

Do you use them together with the new alloy castor blocks ? Because it would decrease total castor significantly.

Edit : I think I'm mixing a few things (rake blocks). Nevermind this reply.

I got to try the 7.5's with Adam Bailey's outdoor setup this past weekend at the outdoor track. It was a bit muddy, but manageable. I put the alloy upper tranny blocks as well. They are a few grams heavier, but it acted just great. It was my first time this season outdoors, and the JConcept DD's were hooking up just awesome. Next time I will try Simon's outdoor euro's setup, see how it hooks...

Thanks boys:thumbsup:

I tried them today at the Kampenhout track and i agree with Chris : they're definately an improvement. With the kit yokes, the CAT had a tendancy to oversteer after the apex of a turn. that's completely gone now.

Now that's exactly the problem I had yesterday on our MVB track which is a completely different track than Stefke's Kampenhout. The car feels terrific on a straight line and is very quick turn in and through the first part of the turn up to the apex. After the apex the car feel tricky with the rear end trying to overtake.

I tried different things to solve this but didn't find a good solution for it. Everything I tried helped a bit but I hope to solve the problem with the 7.5's in combination with the overdrive pulley.

Will keep you updated.

Michael

Quick Q..
Snapped one of the shock rod end on sunday and thought i had some spare but only had the longer ones for the turnbuckles, so put them on all round.

Got more droop now and the car felt pretty much spot on but do you reckon its gonna have a negative effect on the handling over using the short kit ones?

cheers lads

Hello! what setup i need for outdoor track with carpet surface? what shocks oil i need to use?

It will be a positive if you need more droop, for washboard type sections or if you want more weight transfer to the rear of the car because of the extra extension in the front.

hi,
some questions?
1) with lower inner ballstud on the rear give more or less corner grip?:confused:
2) with lower inner ballstud on the front give more or less steering?:confused:
thanks for help:thumbsup:

Ive recently brought a catsx, 4wd offroad is new to me.. i know setups for 2wd buggy and trucks but 4wd will be totally different i think..

Done allot of reading in this area and oople seems to have the best catsx info going, Im in australia and we run rather dry medium/high bump outdoor clay tracks, Going to test the cat out at a big event in 1.5weeks time and need a idea on ride height more than anything else .. currently have grey(f),red(r) springs with diffs in high position currently..

cheers.

Motor got a bit warm today with a 7.5 Losi 23 with standard spur. I swear it didn't get that warm the previous week. The change this week has been the LRP Spere TC coming out and an RS Pro going in

Hello, what set-ups used Schumacher drivers on Euro's in Bilbao??

I will try and post one later on


Si

Hi got a couple of quick questions, what would be the difference between using the 7.5 yokes and the 7.5 rake things or would it have different effects depending on where you take the angle off?
Also with the 7.5 yokes do you need to file them down like you do the normal ones?
Cheers

Here is the setup i finished on at the Euros

Front -

Track Washers - 1mm front and back
Roll Bar - yes - 1.2
Shock Position Mount - Middle
Shock Position Wishbone - Middle
Front Rake - 10 Degrees
Washers - 0mm
Front Link Bracket - 37mm
Washers on Hub - 0

Rear -
Wheel Base - Long
Toe In - 3mm Rear, .5mm front = 3.25 degrees
Anti Squat Washers - 2mm Rear, 0.5mm Front = 1.8 degrees
Rear Link Bracket - 37.5mm
Washers - 4mm
Shock Position Mount - Inside
Shock Position Wishbone - Inside
Hub Postion - Middle
Roll Bar - yes - 1.2


Shocks

Front -
40wt on 3 Holes drilled 55s
Schumacher old Grey Springs
Diaphragm - Centre cut out and removed
Ride Height - Wishbones level

Rear -
37.5wt on 3 Holes drilled 55s
Schumacher old Red Springs
Diaphragm - Centre cut out and removed
Ride Height - Wishbones level

Transmission-
Rear Diff Height - Low
Front Diff Height - Low
Layshaft Pulley - Pin Through
Front Drive - Diff
Gearing - 83 x 24 on Speed Passion 4.5 (ran a 5.5 when the temperature came up)
Internal Ratio - 34 Tooth Pulley

Tyres
Yellow Mini Pin all round, Mr O Foams.

Any questions ask away. This setup was good all week.

Si