Stories from the world of RC car racing

Here at Action R/C we have finally got around to having our first look at the new CAT SX, Schumacher’s new 4wd Offroad 1/10th EP buggy. We are no strangers to the Schumacher offroad cars and have built and raced most of them over the years. The new car carries on the fine Schumacher tradition of great engineering innovation and thinking outside the square for many solutions – I don’t think there’ll be many claiming the CAT is a copy of any of the other 4wd buggies around at the moment.
So far the build is very simple – the bags are neatly and logically marked in build sequence with every part needed for a particular step. The only process that may perplex some that aren’t used to Schumacher is putting the pulley fences on the pulleys – there is a fine ridge on the inside of the fence that has to clip in to a groove in the pulley – if you have the fence with the smooth side inward then you are set to go just work around the circumstances squeezing the fence on – you’ll hear it click when it’s on.




11 responses to “Building the CAT SX (Lipo)”

  1. heavy Avatar

    Made some more progress – wish I had a decent camera at the moment.
    Build is very straightforward and logical. Each step has it’s one little numbered bag and the manual is just excellent – so far nothing left out or incorrect – all very clear.
    Brought a tiny little receiver for the CAT today – don’t think big receivers are going to be easy to squeeze in. Pretty soon I’n going to have to decide on a Speed Control (SP GT or Sp LPF ) and a motor (17.5, 13.5 or 10.5 ) – I have the old faithful Futaba servo ready to go and I think I’ll build it to suit CORE 5000 LIPO packs – 2 of those should do.
    I’ve got some Hole Shot tyres ready to mount up and going to try some of the new Schumacher Premounted tyres – ordered some to test their usefullnes and their price.
    Still got to find five minutes to paint the body.

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  2. heavy Avatar
    heavy

    It’s got arms now – been making track rods and tie rods this morning – I hate that job but it’s a lot easier if you own 2 Schumacher spanners.
    On the subject of tools I do have the circlip pliers for the diff thrust race circlip if any local CAT drivers want to borrow them.
    Next job is the shocks – hopefully tonight but I’m waiting for my vacum pump to come back from someone who borrowed it.

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  3. Gary Avatar
    Gary

    Good to see you are getting there, if you want you can borrow my shock pump, let me know and I can drop it around.
    Regards
    Gary

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  4. Aaron Avatar
    Aaron

    Well I have mine finished, still have to paint the body and wing.
    The build was quite good and well layed out, only missing one part (ballstud) at step 48 or 49, can’t remember. I just need to solder up my SP speedy and place the rest of the electronics.
    Looks as though the only after market purchases that “may” be needed will be red rr springs and different tyres.
    Overall a pleasant build and I can’t wait to race it.
    Bring on the stock 4wd’s at Ipswich….4 wheel drive revival..yeh yeh

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  5. heavy Avatar
    heavy

    I’m just doing teh shocks – done the rear ones. I built both front and rear suspensions 1mm wider on each side (at the mountings) to try to limit drive shaft plunge and in addition I put 3mm spacers on the rear shocks plus 1 “O” ring. I used 30 wt oil in the rear.
    Probably do the front shocks tomorrow then probably won’t get anything done till Sunday as tteh Caravan Show is on from Tomorrow and work will have priority.

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  6. scott Avatar

    send it down when it’s done. i’ll give it a work out!

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  7. Gary Avatar
    Gary

    I think you will have to wait Scott :mrgreen:
    Regards
    Gary

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  8. heavy Avatar

    mmm lets see – maybe a swap.
    💡 I’ll take the Baja, E Firestorm, LRP 1/8th Buggy permanently and in exchange maybe I’ll let you have the CAT SX for 1 month 😆 😆 😆 😆

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  9. heavy Avatar

    I’ll have to check my supplies of Camel Yellow – although it won’t take much paint it’s such a small bodyshell.

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  10. heavy Avatar

    Unfortunately been working at the pesky day job more than I should so the CAT is not finished and won’t be ready for the planned Saturday debut – have to be the following fortnight.

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  11. heavy Avatar
    heavy

    Presently in the process of fitting battery and electrical etc – plenty of room for teh electrics compared to a touring car.
    Had ocassion to pull teh rear diff out last night to look for something I might have done wrong (I didn’t as it turned out ) and can confirm it is only 4 screws to get the diff out or to adjust the rear belt – fantastic.

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