right you dirty buggers LOL, will a fret saw require any super blades?

more pics
 

hi richard, any chance of getting a few pics of how you mounted the rear shock tower and what part syou were able to purchase and what you had to make? i'm really interested in trying this out myself. thanks a lot! really cool project, have you driven it yet? how far off is the setup from the standard chassis? thanks again!

adam

Hey Rich,
how does it drive?

got any more pics Rich?

I only got chance to put a couple of packs though it before I had a bod moment and broke a wishbone, I didn't bring a spare (doh!) so ended up running the CR for the rest of the night.

From what I could gather the turn-in felt very positive, but I had quite a bit of understeer. It's looking like I'm going to have to cut a hole in the t-plate for the gearbox to drop down into so I can lower the inner camberlink ballstud. The back end was colapsing under acceleration almost to the point of lifting the inside front wheel, so obviously there isn't enough roll stiffness at the back as it is.

One disadvantage I've found of running the gearbox the wrong way is it loosens your slipper off through each run :p

oh, How did you sort out your layshaft matey? Did you reverse it?

I think I may just make a carbon fibre chasis, shock towers and and play with the layout, but leave the tranny

Rich, would be be possible to stick another nut on the layshaft to stop it loosening off ?

or if you can get a trust washer on before the nut, that would sort it!

genius

Losi 'short neck' ball studs allow you to lower the stud a mm or so. I guess you'd need more than that.

2 nuts! 1 nut is not enough! :D (on the slipper shaft)

You did reverse the diff, right? The screw has to remain on the .. .ermmm... *think think* right hand side!

No it wouldn't. Think about it for a second....

the nut loosens because of it's own weight, not because of a rotational force from the slipper plate or spring or something.

I think I'm going to try 2 nuts :o to start with, it's impressive though how the tiny nyloc nut backs itself off purely through it's inertia. I'm going to have to do a Mk2 version with lower and reversed gearbox.

Ben, are you going to Batley this Sunday? If you are could you sort me out with one of those little moulded pieces you made to reverse the gearbox on you car please?

Elvo, the lowered ballstuds won't be enough I don't think, I'm talking about 3-4mm to bring it back to the same height relative to the wishbone as the B4 :o

I will do mate, I only live a few minutes walk LOL. What time is it from and till? Iw ill pop down with me camera, and take some snappies, and I'll bring my modifed B4 for you to look at LOL.

And ofcourse I will sort you owt with one of those spacers, its not technical, but its practical LOL.

PM rich;)

Richard, you can use the old U-brace it'll give you another 2mm



Elvo (lol)

It is the old brace ;)

Grind it! :o :D

G

Go to bed, guys!

yeah but that's only 1mm

hahahah PMSL;)

Blimey! the spring does not move because only the spur moves/slips and that slips on the pads... (scrap the TW idea - I was thinking of the hydra drive!)

surely it does not back off due to inertia? SURELY not??

if it does.. wow....

Alu Loc-Nut then! :D

Of course. What else?
The "engineering" solution to this would be to use left-hand threads, like on the cranks of your bicycle, or the crankshaft of your 1:1 car.
But maybe a high nut with fresh nyloc would do.

but surely it gets big 'kicks' in both directions, especially in the air

That might be what does it Chris. If you think about it in a normal car when you accelerate the nut's inertia is trying to loosen it, and when you slam the brakes in the air the shock will want to tighten it.
With the reverse gearbox it's the other way round, the nut wants to tighten under acceleration and the sudden deceleration happening when you correct the car in the air is in the loosening rotation/direction. (I have a feeling that will be grammarated :confused: :p )

but what about when you gun it in the air, using a normal 'box ?

I think big nuts will only make the problem worse, a light nut wouldn't have that much inertia like a heavy one and might not have the problem...

The biggest kicks are in the direction of 'tighter' on a normal standard non-reverse-tranny B4 box.

Transmissions get the biggest whacks when landing (full-throttle- off of jumps, and when slamming the brakes.
Any motor, brushed or brushless, can bring a car to a dead stop faster than it can accellerate it to top speed. Same with disc brakes on a 1:1 car. Braking is always faster than accelleration. That's why the 'ideal' line is asymmetrical.

And Coop, I said 'higher' nut (with more nyloc), not bigger nut. YOU are the biggest nut :-O


That being said, why does the diff screw go in from the other side on a B4 compared to a Losi? :confused:

adjust the slipper to how you want it, then put a bit of lock thread on the thread( obviously) ;)

The Losi has a WAY bigger and heavier screw, the AE screw is very 'thin' so less inertia...

hey nutty Smellvo, check THE directory, added *cough*3D*cough* slipper to the tranny.

Yea ben thats what i was thinking.

A

http://www.oople.com/rc/photos/batle...s/DSC_6577.jpg



broken ?

lol, more like stripped so he could build his B4 back up. i think you sold the xxxcr today as well richard ? back to the good old b4!! :p:p

Yup :p

It was pretty poor I'm afraid, it did a couple of things really well but lots of things badly. It was so far off the pace I don't think it was a setup issue, it was just rubbish :rolleyes:

thats a shame Rich, I had a look at the car in person, was very good quality;) I think with my project, I will leave the tranny as norm, and mess with the chassis

'It was so far off the pace I don't think it was a setup issue' ...

... but it was quick enough to win :D

I was talking about my mid-motor thingymebob :p

oops :confused:

The thing is i am sure losi and AE will of tried all sorts of weird and wonderful configurations when designing the cars, as richard has said it was off the pace but it was just a project for him and something to try, if it worked great, but the chances of one man outwitting ae and losi is pretty slim.

no offence meant to anyone here, im sure there are some very clever people in this game and projects are great and very interesting to see but if losi or ae thought it would be better this way or that then i am sure we would see different cars, as it is to the untrained eye there would be very little to seperate the cars.

YEah minimum is really 2, as Jconcepts are world champs:D

very good point,;) but the 2wd mid motor idea was about when the cougar 2000 was around and hasnt taken of since (on a big scale)