Need help identifying CAT diff case

The place for all things Schumacher.

Moderators: scr8p, klavy69

Post Reply
Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Need help identifying CAT diff case

Post by Grunger73 »

Merry Christmas
I'm in the process of restoring an old Schumacher CAT XLS and I'm missing the whole rear end (diff, shocks wishbones etc). I found a diff case on eBay but I'm unsure as to which model the diff case belongs to.
I've attached some links to the pics
http://i1168.photobucket.com/albums/r491/grunger73/Mobile%20Uploads/image_zpse3pf4jqt.jpeg
http://i1168.photobucket.com/albums/r491/grunger73/Mobile%20Uploads/image_zpsgr9kctjn.jpeg
http://i1168.photobucket.com/albums/r491/grunger73/Mobile%20Uploads/image_zpspme2biub.jpeg
Any help is greatly appreciated
Thank you,
Shawn

User avatar
terry.sc
Approved Member
Posts: 840
Joined: Wed Feb 07, 2007 4:58 pm
Location: Stockport, UK
Has thanked: 6 times
Been thanked: 74 times

Re: Need help identifying CAT diff case

Post by terry.sc »

The pair of holes at the top of the rear of the gearbox sides identify it as XLS gearbox. The XLS lowered the rear upper wishbone mounts.
Image

Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Re: Need help identifying CAT diff case

Post by Grunger73 »

terry.sc wrote:The pair of holes at the top of the rear of the gearbox sides identify it as XLS gearbox. The XLS lowered the rear upper wishbone mounts.
Excellent. Thank you for the explanation.

tamiyadan
Approved Member
Posts: 1690
Joined: Wed Apr 07, 2010 4:45 pm
Been thanked: 6 times

Re: Need help identifying CAT diff case

Post by tamiyadan »

.

Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Re: Need help identifying CAT diff case

Post by Grunger73 »

My spare diff case has 2 holes on the right hand side and one hole on the left, in the correct position for the XLS . It's some sort of aftermarket carbon fibre . The one on the right is a normal metal type. There seems to be so many variations of parts that it makes it hard to know what is correct and what is not.

Peakey
Approved Member
Posts: 578
Joined: Tue Feb 25, 2014 3:55 am
Location: Nottingham, UK
Been thanked: 3 times

Re: Need help identifying CAT diff case

Post by Peakey »

I the XLS and later Procat had side plates with both the upper and lower holes in, true original SWB CAT had plates with just the upper ones in. So yours Dan maybe an early XLS that they just put the lower holes that was needed in?

tamiyadan
Approved Member
Posts: 1690
Joined: Wed Apr 07, 2010 4:45 pm
Been thanked: 6 times

Re: Need help identifying CAT diff case

Post by tamiyadan »

.

Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Re: Need help identifying CAT diff case

Post by Grunger73 »

tamiyadan wrote:all i can confirm is my car was built as it was from the kit.
The buggy is very original down to the UK dirt still stuck to it.
I replaced a few parts on it like the body and tires and some broken parts i did a mechanical rebuild on it but otherwise i left it as a survivor with some war wounds. has the front oneway, etc. for a cleaner look i used a O-ring in place of a rubber band for the front crash foldback suspension.
Would you happen to have a pic of the front end with the o-ring installed?

tamiyadan
Approved Member
Posts: 1690
Joined: Wed Apr 07, 2010 4:45 pm
Been thanked: 6 times

Re: Need help identifying CAT diff case

Post by tamiyadan »

.

Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Re: Need help identifying CAT diff case

Post by Grunger73 »

That does look a lot better than the standard setup. Thanks for the pics.

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Need help identifying CAT diff case

Post by DennisM »

Those I´ve raced against back then, used three 2mm round o-rings. If one snapped You´d still be able to finish.
Gone fishing

Grunger73
Approved Member
Posts: 73
Joined: Thu Dec 24, 2015 9:48 pm
Location: Ontario, Canada

Re: Need help identifying CAT diff case

Post by Grunger73 »

DennisM wrote:Those I´ve raced against back then, used three 2mm round o-rings. If one snapped You´d still be able to finish.
Smart. I don't think I'll have to worry about that tho. I couldn't imagine putting mine through anything strenuous enough to break one of these. It's going to be run up and down the driveway a few times before retiring on a shelf. Just too expensive to repair if you're even lucky enough to find the parts.

tamiyadan
Approved Member
Posts: 1690
Joined: Wed Apr 07, 2010 4:45 pm
Been thanked: 6 times

Re: Need help identifying CAT diff case

Post by tamiyadan »

.

Danf1275
Approved Member
Posts: 72
Joined: Sun Aug 03, 2014 8:16 am
Been thanked: 1 time

Re: Need help identifying CAT diff case

Post by Danf1275 »

All mine run with 3 O-rings. I personally think crashback is great - never broken a front wishbone or hub.

User avatar
Groomi
Approved Member
Posts: 255
Joined: Thu Aug 23, 2012 6:11 pm
Location: Kent, UK
Has thanked: 1 time
Been thanked: 2 times

Re: Need help identifying CAT diff case

Post by Groomi »

Peakey wrote:I the XLS and later Procat had side plates with both the upper and lower holes in, true original SWB CAT had plates with just the upper ones in. So yours Dan maybe an early XLS that they just put the lower holes that was needed in?
My understanding is the following:
SWB and XL had single hole in upper position.
XLS had both holes.
Procat had just the lower hole.

Knowing Schumacher production back then, it wouldn't surprise me if either a few XLS's were shipped with Procat plates or vice-versa.

Regarding hole sizes on XLS sideplates, I've come across some sideplates with both holes the same and others with the lower one slightly larger. The XLS has an M3 threaded rod through that hole rather than a self tapping screw and it is much easier to assemble if the hole is a tiny bit larger than the others. I've definitely seem some DIY enlargements, but perhaps it's possible later production models might have had larger holes.
Using my son as an excuse to relieve my youth. :lol:

https://www.facebook.com/MuzzoomModels

Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post
  • B4/T4 diff in a T2/GT trans case
    by scr8p » » in RC10 Truck Forum
    5 Replies
    911 Views
    Last post by RC10th
  • Need help Identifying MIP Diff C400
    by a01butal » » in Temple's RC10 Tech Forum
    5 Replies
    518 Views
    Last post by a01butal
  • Need help identifying vintage Cat
    by alo » » in Schumacher Forum
    6 Replies
    1771 Views
    Last post by alo
  • Trinity cat diff
    by notme » » in Schumacher Forum
    1 Replies
    833 Views
    Last post by dangermouse
  • need cat 3000 diff info
    by rccars4sal » » in Schumacher Forum
    5 Replies
    1816 Views
    Last post by rccars4sal
  • Bud's Cat diff conversion kit 6550?
    by Grunger73 » » in Schumacher Forum
    3 Replies
    1678 Views
    Last post by MegaMousegGW
  • Trinity Cat Pro Racer Diff and Top Layshaft Pulley Upgrades
    by Incredible_Serious » » in Vintage Catalogs / Instruction Manual Scans
    12 Replies
    3328 Views
    Last post by kaszal
  • Cat XL. Cat XLS & Pro Cat. Whats the Difference????
    by Mad Racer » » in Schumacher Forum
    5 Replies
    3077 Views
    Last post by Mad Racer

Return to “Schumacher Forum”

Who is online

Users browsing this forum: No registered users and 14 guests