Luke's Procat rebuild

[kaszal]

http://www.ebay.co.uk/itm/ws/eBayISAPI.dll?ViewItem&item=271040255455&ssPageName=ADME:L:LCA:GB:1123#ht_3043wt_1344

[kaszal]

I'm going to ask Fibre-Lyte if they can make these out of 4mm carbon...



The idea is to lock up the front towers and crashback system to get better performance from the dampers and more responsive and consistent handling. The downside is that without the crash-back something else is more likely to break.

Any thoughts?

[jamin]

I seem to recall BITD we used to put a load of those bands on the front to lessen the effect of the crash back system, I can't remember how many though.

[kaszal]

Corrected some dimensions...

Any other comments welcome

[Mr. ED]

A good solid tie-wrap on the bottom and a turnbuckle on the top shock mountscrews would have been my cheap quick-and-dirty. But your car deserves more than just Q&D.
Now, where do you plan to put that upper link? If you put it behind the shocks, won't the 4 mm extra pose a problem?

[kaszal]

Thanks for the suggestions. I don't think the 4mm will cause a problem but it will change the angle of the dampers slightly. I'll post photos this weekend if the pieces arrive!

[Mr. ED]

maybe you can put the bar over the backside of the shocktower? That' way your shock position is not affected

[kaszal]

I'm considering selling my Procat

Sorry if that means I break my promise not to sell.

Obviously I will sell the electrics separately but I'm wondering if I should sell the chassis whole or break up the main components e.g. custom carbon fibre chassis with LiPo trays and belt cover, custom ballraced steering, front and rear diffs, belts, slipper assembly, suspension, alloy upgrades, bodyshell/wing/tray, Tamiya dampers, 2 sets of wheels etc.

Waddya think?

[Groomi]

Given the popularity of your threads about the development of this car, I would say it has a bit of a cult status amongst vintage Schumacher fans...

[kaszal]

Here lots of photos in a slideshow...

http://s103.photobucket.com/user/kaszal/slideshow/Procat

There's also a detailed parts and modifications list PDF attached at the bottom.

[kaszal]

Photo slideshow
http://s103.photobucket.com/user/kaszal/slideshow/Procat

Video clips
http://www.youtube.com/watch?v=PZIkSMEYosQ
http://www.youtube.com/watch?v=wJIThRAEx60

oOple forum
http://www.oople.com/forums/showthread.php?t=48668&page=22

Chassis parts
custom carbon-fibre components manufactured by Fibre-Lyte:
- main chassis, LiPo trays and battery straps
- top deck with countersunk holes (belt cover simply ties on for a perfect seal plus no cracks)
- undertray strips (protect undertray from splitting and stiffen chassis a little)
Atomic Carbon 4mm shock and camber link mounts (stronger and more settings)
brass weights added, balance front to rear is 46% : 54%
high tensile hex bolts used where needed

Transmission
Bosscat 23mm pro-diff with alloy washer carriers
U289X front overdrive pulley with alloy hex-washer carriers and A-3010 Losi diff plates
0.5mm carbon-fibre pulley fences i.d. 23mm o.d. 32mm (machined by Fibre-Lyte)
BOCA ceramic flanged bearings (rubber sealed) and Edit ceramic centre bearings
U857 disc springs arranged in opposition )()(
U1631 23mm diff output yokes (deep enough to accommodate thrust race and 4 large disc springs)
All plates were sent to B-Fast USA to be ground flat
3mm ceramic diff balls used all round
U194 hi-torque rear drive belts
SDPi kevlar reinforced urethane MXL belt 320 teeth 6mm wide (kit belt is only 4mm wide)
custom RW Racing machined aluminium sleeve (separates layshaft pulleys to fit wider belt)
Bosscat slipper clutch, RW Racing Supalite spur and steel pinion
axle crush tubes made with 8mm shims

Alloy parts
custom laser-cut red anodized gearbox side-plates
GPM alloy front gearbox brackets with M3×17mm brass PCB spacer stand-offs
alloy eccentric bearing housings, alloy layshaft bearing housings and alloy inner transmission housing

Suspension
custom ballraced steering (my own drawings, machined by Fibre-Lyte), 3×6×2.5 flanged bearings, 3×4.5 shims
PK Racing alloy track rod
RW hardened ball joints (front hub carrier pivots)
Lunsford titanium turnbuckles
U3500 Schumacher pro ball sockets
Bosscat Z-bracket
hinge pins cut from 2.0mm and 2.05mm drill blanks (harder and straighter)
fresh replacement 20×3mm o-rings for crash-back system
54028 TRF buggy aeration oil filled dampers (detailed set up information provided)
Kimbrough mid-size servo saver
JC Racing Cat black dish wheels and Schumacher mini spikes

Bodywork
Kamtec reproduction Procat shell (paint by RCS Graphic Worx) and Teambluegroove undertray
reproduction belt cover from “brian s” on Oople
U3298 Schumacher wing mount and HPI 61524 EU wing set
U1042 aerial mount

Modifications
belt tensioner removed and spacers inserted between trans housing and brackets to tension belt
front wishbone spacer replaced with extra tower to move shock mount outwards
screws for rear wishbone brackets replaced with M3×70 bolt (Robbe S0107)
front axle bolts shimmed to stop thread grinding driveshaft ends at full lock
Turnbuckle between front shock towers (limits inward flex without interfering with crash-back system)
M2 nylon spacers for adjusting caster
front one-way drive shafts replaced with standard drive shafts
wheels balanced with white tack to reduce vibration and improve ride
vulnerable areas of undertray and shell cushioned with thick sponge tape
undertray and belt cover sealed with foam tape to keep dirt out of transmission
silicone sealant applied to undertray to keep out water
grub screw retains hinge-pin more securely in wishbones
front hub ball-joints spun in Dremel and polished with Brasso
wishbones shimmed to reduce slop where necessary
plastic parts (wishbones, hub carriers, brackets) boiled to reduce chance of cracking and coated in GT85

Electrics (optional)
Align DS610 servo
2.4 GHz Code receiver
Speed Passion LPF controller and 10.5T motor

[Coelacanth]

I like your paint-job, kaszal. Then again, I am partial to the zebra theme...

[kaszal]

Thanks, I copied that off Jason in Australia. You got tiger-tracks too?

[Coelacanth]

Yeah, I painted this body in the mid-80's.

http://www.rc10talk.com/download/file.php?id=40967&mode=view

[QuackingPlums]

Oh my, I only just saw this. I can't believe you're selling it Luke! My own restore went on hold when the little one came along, now I fear that all those parts are never going to make it into a car that I'll actually race.
Whoever gets this had better treasure it, cos it's a beauty! I only wish I could justify *another* Procat!