CAT SX - First photos

[Oliv996]

Originally Posted by schmacher

i just don't like the fact of having to have packs that i can only use in this car and can't use in others...kinda sucks

Why don't you switch to X-6 and X-60

[DaveG28]

I wonder whether you could use standard stick/3+3 saddle in the LIPO version if necessary?

The car is an interesting concept, will be good to see how it works out. There's so much variety, the Tamiya (Yok?) style which I'd call "standard belt", B44/BJ4 "standard shaft", then cars like Serpent/Aero/Atomic Carbon which seem to go for ultra narrow (never heard this explained but I assume its aiming for low polar moment of intertia), the pred which goes for ultra aerodynamic (not that I can work out how Aerodynamics make a diference at our speeds in standard air pressure ), and now the Schumacher which looks (obviously don't know how they approached it) as though it was drivetrain comes first and narrow too, which from these pics makes it look to me like it may have a higher centre of gravity (although I see all the electrics are down low).

I'd be very tempted by the Schu next winter as it allows me to go LIPO racing, but still worried about the LIPO being exposed, and also landing on the shell could destroy the drive train!

[Garry Driffill]

It looks rather neat, i wonder if there will be trouble with that middle big belt with them either rubbing the cells. On my old MI2 the belts wore rather quickly without it not touching anything. I wonder if they will wear fast on this car?

why is the arial mount soo far away !

I must say im looking forward to seing it on the track.

[Garry]

One thing not mentioned, now the motor spins WITH the drivetrain, does that mean it'll be backwards to jump?

i.e apply throttle to lower the nose instead of raising it?

I'm not a buggy driver, never jumped one so I don't know.

[SHY]

Originally Posted by schmacher

i just don't like the fact of having to have packs that i can only use in this car and can't use in others...kinda sucks

Yeah, re-soldering 1 bar and 1 wire is a HUGE problem
(And any config will still fit your B4 or CR 2WD)

[DCM]

to be fair, the high up weight is in the center of the chassis, so has less influence in the cars handling, and with all things, it is a compromise, to get the belt low would also mean moving the cells out, etc, and as the cells are the major weight component in the car, Schumacher have tried to optimise the weight distribution of these, and the motor/electrics.

It isn't by any means an 'elegant' design top offed by a less that pretty shell, but I can understand the concept and appreciate the approach, and innovation is good...... as long as it works. I personaly think the drivetrain is over complicated, and for racing, too many points to fail so it all comes down to how 'strong' Mr Schumacher can make them bits.

p.s. the shocks look aweful, I hope they intend to put a finish on the outside of them shocks to stop em furring with corrosion for starters......

[RogerM]

Originally Posted by schmacher

i just don't like the fact of having to have packs that i can only use in this car and can't use in others...kinda sucks

Should not be a problem!!!!

Most 2wds use either 6 in line so what is the difference between IIIiii & IIIIii in reall terms???

If you really wanted to have cells that you could run 4 x 2 , inline and 3 x 3 just lay the cells out

III i ii

so the second "3 pack" uses a link wire between the 2 cells and the 3rd rather than a battery bar!!!!!

No issue at all and certainly no reason to reject this car, or any other that uses 4 x 2 for that matter.

If your more worried about battery pack configuration than getting the best balance out of your car then may I suggest that your not going to get the best out of any top line racer.

Don't wish to sound rude but really performance should be the driving influence to any car design.

[SHY]

Us X-5 owners already addressed this:
http://www.one-ten-rcforums.com/4wdr...ic.php?id=1382

I might add that using Deans plugs in stead of plugs/tubes (Corally style) makes it a lot easier to make'em fit any car!

Question: Shaft-drive cars give a sideways torque effect, which isn't ideal. Why not use a bevelled spur & pinion gear and mount it longitudinally? And in addition make the gearboxes assymetrical like on the eight?

[mark christopher]

Originally Posted by SHY

BTW what's the idea behind the Schuey logo??? (the 3 arrows)

it represents the ball diff, which was designed by Cecil Schumacher

[mark christopher]

Originally Posted by Garry

One thing not mentioned, now the motor spins WITH the drivetrain, does that mean it'll be backwards to jump?

i.e apply throttle to lower the nose instead of raising it?

I'm not a buggy driver, never jumped one so I don't know.

nope
its the rotating mass that alters the angle of the car, and that in a buggy is the wheels/tyres drive train, motor has little effect of a shaft car would roll to its side in the air when power applied

[SHY]

... and with brushless motors the armature is also quite smaller & lighter compared to brushed motors = even less rotating mass...

[Welshy40]

Originally Posted by muzzy

Only thing I would say on that Welshy is make sure you will be able to get spares for your Tamiya if your at a track and break it, or if many others at your local club or friends will run that car to assist with parts. I know most UK shops have pre ordered the new Cat SX and spares will be readily available throughout the Uk, and there will also be team drivers present at lots of big meetings for assistance if needed. Just a couple of things to bear in mind.
Mark

Dont worry about spares, as I have plenty of places to buy from, and before I go and race again i will have enough spares for every conceivable problem.

However back to the point, yes the car looks a bit of a disaster, but there may be something to this new Cat, and lets hope that they can get back into the game with a big bang. If they can get some good drivers that can make an impact at the worlds then they will be half way there. Its about time, and hope they do well with this car.

[super__dan]

Originally Posted by Welshy40

If they can get some good drivers that can make an impact at the worlds

Si Moss and Matt white are good drivers wise in the UK, I assume the next worlds isn't until 2009 now though?

[Welshy40]

Originally Posted by super__dan

Si Moss and Matt white are good drivers wise in the UK, I assume the next worlds isn't until 2009 now though?

I havent heard of them, have they made any worlds A's? If not then maybe Schumacher should try and get someone like Neil Cragg, now he is a good driver. Im not saying that the guys you mentioned are good, but I kindof doubt theyd make an impact at the worlds.

[Robbiejuk]

Hmm looks like it could get quite noisy on a dusty track with those exposed gears at the back, how do you adjust the slipper clutch?

As i said before in the video I saw it looked ace going round the track though, and who cares what chassis looks like? It's the performance that counts.

Wayne rooney isn't a good looking guy, but he is a very good footballer.

Hope to see it on sunday if it's there

[DCM]

Originally Posted by Welshy40

I havent heard of them, have they made any worlds A's? If not then maybe Schumacher should try and get someone like Neil Cragg, now he is a good driver. Im not saying that the guys you mentioned are good, but I kindof doubt theyd make an impact at the worlds.

how to make friends and influence people lol.

Sometimes good driver can drive but can't design a car though....

[schmacher]

hey shy, my other cars are all saddle packs..so yeah it is a pain so get over yourself

[SHY]

Originally Posted by schmacher

hey shy, my other cars are all saddle packs..so yeah it is a pain so get over yourself

You mean other 4WD cars then? Which ones?

And didn't mean to sound rude, sorry! It's so boring to be nice all the time Just trying to help really! I had the same "doubts" before buying the X-5, but it's been no biggie really.

[Oliv996]

Originally Posted by SHY

... and with brushless motors the armature is also quite smaller & lighter compared to brushed motors = even less rotating mass...

200% agree with you SHY

The point advanced in the specs sounds as flat tire

[SHY]

Olivier, how about the question I posed: Shaft-drive cars give a sideways torque effect, which isn't ideal. Why not use a bevelled spur & pinion gear and mount it longitudinally? And in addition make the gearboxes assymetrical like on the eight? (= motor in dead center)

What's your opinion?

I guess you would have to change both the spur AND pinion when changing ratio to get a good gear mesh. But you normally don't change that.