Bosscat. Or?

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Johanp
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Bosscat. Or?

Post by Johanp »

Hi!
I got a 4wd Schumacher for $50 on a local auction site. Look at the motive on the undertray!

From googling pictures I think it´s a Bosscat.
Can anyone confirm?

Driveshafts are worn, the O-rings for both the wing and the crashback front end is kaput.
Does anything from the re-re CATs fit?

20230807_160544.jpg
20230807_160256.jpg
20230807_160435.jpg

1911Colt
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Re: Bosscat. Or?

Post by 1911Colt »

Bosscat.

The easiest way to identify a Bosscat is that the belt runs over the lower chassis plate. Previous CATs had the belt under the chassis.

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Re: Bosscat. Or?

Post by 1911Colt »

I am going to guess it is a Bosscat "Competition" because it has the carbon chassis and red motor plates. $50 is an absolute steal! Retro RC on this site will be able to tell you everything about it.

Here's mine:
Attachments
20221028_105030.jpg
20220604_200202.jpg

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Re: Bosscat. Or?

Post by 1911Colt »

A few re-re parts fit, but the Bosscat is the "least similar" of all the early CATs. From the SWB to ProCAT, a lot could interchange. The Bosscat was the ultimate version of the original layout before Schumacher released the CAT 2000, but it is made mostly of parts unique to the Bosscat.

The wheels fit, but the Bosscat came with 2.2 vs 2.0 of the previous CATs. JC Racing makes 2.2s that will fit. The driveshafts will fit.

The Bosscat has different shocks from the previous CATs. You can still get parts to rebuild Bosscat shocks direct from Schumacher. They are not always in stock, though.

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Re: Bosscat. Or?

Post by Johanp »

A lot of useful info.
Thanks!

sondeen
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Re: Bosscat. Or?

Post by sondeen »

When I emailed Schumacher a few years ago about long term parts availability for my CAT XLS ReRe, they wrote back to say that they don't ever really discontinue parts for their older models, however they may not have every part in stock consistently (they must run small batches of older parts from time to time). You may be able to get replacements for this car directly from Schumacher, I would email them directly.
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CAT XLS Masami | Ultima [sold]

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Re: Bosscat. Or?

Post by Retro rc »

Welcome to the rabbit hole of vintage Schumacher,

As colt has said already you have a bosscat competition that looks to be in good shape, But yours has the works rear arms and hub carriers from what I can see so either has had a works rear end conversion or was a work that had the gear box plates replaced. Either way you basically have a works spec bosscat and for $50 you stole it👍🏼

Crash back and wing o-rings from the procat re re will work perfectly as will the driveshaft parts. Unfortunately none of the procat or xls drive train or suspension is interchangeable

Crashback part number is u7217
Wing o rings part number is u1247

Schumacher sell the jc racing wheels as a 2.2 option as the aero discs are well gone.

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Re: Bosscat. Or?

Post by Johanp »

Thanks so much for your input!

The car is now in pieces. Still needs a good clean.
I ordered some parts: driveshafts, UJ:s, belts and o-rings. All from the rere-series.
Body is from TBG.
20231118_134541.jpg

Unfortunately I also found this:
20231118_134905.jpg
The tab holding the crashback o-rings is broken clean off on one of the uprights.
From what I can find these are not available anymore. I have not asked Schumacher, but from reading online they are very difficult to find.
Any pointers as to where to look for them?

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Re: Bosscat. Or?

Post by 1911Colt »

Someone is printing them, but I can't recall who. I saw them on this site somewhere. Maybe search "bosscat". They have 3 shock mounting positions, so they look different than the standard parts.

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Re: Bosscat. Or?

Post by Retro rc »

Yep available through shapeways they do come up on eBay every now and then but you need to be fast. Shapeways link below


https://www.shapeways.com/product/97S94NZJV/schumacher-bosscat-uprights-set?optionId=162847394&li=marketplace

These guys do a printed version as well


https://www.vintagerunningspares.com/store/Schumacher-Bosscat-front-suspension-uprights-pair-p463524240

Johanp
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Re: Bosscat. Or?

Post by Johanp »

Since the inner upright was broken anyway, I decided to try to fix it.

Try to save as much as possible from the broken upright, then carefully file a piece of carbon fiber to fit.
1.JPG

Heat up M3 nut and press into upright.
20231229_150919.jpg

Let´s see if it holds up. :)

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Re: Bosscat. Or?

Post by 1911Colt »

Nice work!

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Re: Bosscat. Or?

Post by Retro rc »

Looks good just make sure you file the sharp edges or they’ll cut through the orings

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Re: Bosscat. Or?

Post by Johanp »

Retro rc wrote: Mon Jan 22, 2024 5:51 pm Looks good just make sure you file the sharp edges or they’ll cut through the orings
Good input! Now they are really rounded! :D


20240211_170155.jpg
Slowly getting reassembled.

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