Cat SX3

[erkan]

Love hairdryerstand with built-in paper towels

And btw i can promise you the sx3 is awesome, both to build and run

[Dudders]

Originally Posted by The Chef

Especially if you don't have any legs

[cmgreen]

Now just to bulid the car!

[stegger]

Thats nice fella

[Chris Ashton]

A couple of new SX3 set up's added from Tom. Moto Arena and Worlds Warm up. - www.racing-cars.com

[simoncrabb]

We built a kit today for a customer, and it was a superb build.

Awesome quality, took no time at all.

(Couple of button heads missing from one step, but no big deal!)

Thumbs up guys, a VERY nice release.

[moth898]

Originally Posted by moth898

I installed them on the cat and they do feel smooth, but that has to do with them being packed with grease instead of just oiled.
They are abec 7, wich means that the inner and outer diameters of the bearing are as close to spec as they can get. That doesn't make much of a difference in the belts, it made a difference in the amount of slop in the front and rear hubs. There is very little slop in them now.
I have to admit they do seem to create a little drag on the drivetrain. beacause they are packed with grease. The theory is that the grease keeps the dirt out of the bearing races hence they keep longer between rebuilds. Around here the tracks are made of grey clay that is very abrasive and hard on the cars, so the rubber seals and grease made me buy them. I only have 1 day with the car so far, so I don't know if its worth the extra money.
The red seal bearings that come with the kit are very similar to the boca. They are rubber sealed too, that look to be very good quality. I honestly didn't know that the kit came with this type bearing, I thought they came with the old syle metal shielded type, had I know I would not have bought the boca bearings.

Ran the sx3 with the boca bearings...unfortunately no difference, they still got dirt in them. my advice is stick to the stock bearings and save your money.

[fastinfastout]

diff outdrives, they are different, is the black of a more durable material?

will the sx2 diffs fit in the sx3, even though they are different? Just easier to swap over during a meet rather than a rebuild.

[old jonesy]

Originally Posted by fastinfastout

diff outdrives, they are different, is the black of a more durable material?

will the sx2 diffs fit in the sx3, even though they are different? Just easier to swap over during a meet rather than a rebuild.

Yes. We've run them in Andy's car.

[TonyV2382]

Just started the build. Got the center spur assembly done and it rotates freely but when the center belt is attached to the pulleys in the next step, the transmission seems to be a bit rough when rotating. Is this normal or is there something I can do to free it up?

Its definitely not the center assembly binding as I made sure when I installed it that it moved freely but as soon as the center belt was installed the rest of the pulleys it felt rough. Thanks for the feedback in advance guys.

[mikeyscott]

Originally Posted by old jonesy

Yes. We've run them in Andy's car.

Any reason for sill running with the original diffs?

[TonyV2382]

Originally Posted by TonyV2382

Just started the build. Got the center spur assembly done and it rotates freely but when the center belt is attached to the pulleys in the next step, the transmission seems to be a bit rough when rotating. Is this normal or is there something I can do to free it up?

Its definitely not the center assembly binding as I made sure when I installed it that it moved freely but as soon as the center belt was installed the rest of the pulleys it felt rough. Thanks for the feedback in advance guys.

Never mind guys got the problem sorted.

[mikeyscott]

Originally Posted by TonyV2382

Never mind guys got the problem sorted.

What was it?

[old jonesy]

Originally Posted by mikeyscott

Any reason for sill running with the original diffs?

We got the kit at noon and raced it at 6.00pm. To save time, I transferred the front and rear assemlies including the diffs from SX2 to SX3.

[TonyV2382]

Originally Posted by mikeyscott

What was it?

Everytime I tightened down the ally bulk head the pulley shaft wouldnt roll free...So I just took everything apart and redid the whole step and now it runs smooth...who knows lol it was awkward but its like butter now. Just waitin on some diff grease and molly grease to continue the build. Very nice build so far Im really impressed.

[bigred5765]

Originally Posted by TonyV2382

Everytime I tightened down the ally bulk head the pulley shaft wouldnt roll free...So I just took everything apart and redid the whole step and now it runs smooth...who knows lol it was awkward but its like butter now. Just waitin on some diff grease and molly grease to continue the build. Very nice build so far Im really impressed.

diff grease comes with the kit, its the best you'll get from anywere,and axle grease is fine for metal gears

[TonyV2382]

Originally Posted by bigred5765

diff grease comes with the kit, its the best you'll get from anywere,and axle grease is fine for metal gears

Ya but I needed some grease on hand for diff rebuilds etc...Got the whole rear belt and diff assembled now...Whats the remedy for the clicking noise when rotating the rear belt and diff? Some one said something about a spacer somewhere but where exactly?

[leeboy44]

Hi guys here is my new cat sx3 only used it once and loved it

big change from the durango



IMG00168-20110707-1603.jpg

IMG00167-20110707-1603.jpg

[moth898]

Originally Posted by TonyV2382

Ya but I needed some grease on hand for diff rebuilds etc...Got the whole rear belt and diff assembled now...Whats the remedy for the clicking noise when rotating the rear belt and diff? Some one said something about a spacer somewhere but where exactly?

put a washer between the 33t steel side gear and the locking nut, no more clik

[TonyV2382]

Originally Posted by moth898

put a washer between the 33t steel side gear and the locking nut, no more clik

Tried that and still clicking...I actually took off the aluminum center bulk piece attached to the steel gears and added one shim between the spacer on the lay shaft and the pulley...that stopped the play the pulley had which was causing the click...reassembled and seems better now but havent run it yet. That center pulley had too much play on the layshaft and the only way to eliminate it is to get in there and stop it from moving. A friend solved this by gluing the center pulley to the lay shaft but I dont want to do that, seems like a pain later on to remove.