New hi-speed project

[lutach]

BrianG,

I going to let one of my ideas go here. Just give me some time to make something that will make some sense and I'll post pictures. I've been trying to do this for the last 6yrs and never got to it. I was going to patent the idea, but I think it wouldn't be right for other companies to not try it. One company so far has done it, but not in a 4WD 1/8 scale. How good are you in fabricating things?

[BrianG]

Depends on how complicated/intricate it is, and what it needs to be made of. Due to the lack of "proper" equipment, I'm pretty much limited to sheet metal bending/cutting, and some fiberglass work.

[lutach]

Originally Posted by BrianG

Depends on how complicated/intricate it is, and what it needs to be made of. Due to the lack of "proper" equipment, I'm pretty much limited to sheet metal bending/cutting, and some fiberglass work.

In my head it doesn't seem complicated at all (My head should be bigger with all the stuff floating around in there), but I don't have any machines to do it and that's when everything gets complicated for me . Aluminum will work and you should be able to do it. I'll try to take some pictures today.

[What's_nitro?]

Lutach, I'm interested to see what you've got there. I'm a very mechanical thinker myself but like you and others I lack the tools necessary to build what I design.

[Mod Man]

I actually have the tools to make things happen. But, I have alot of projects on my plate right now including patentable items.

If you post pics, I can look at it and see if it is something I can do?

Anyway, I am limited to items that are about 6 by 10 inches in size because my mills are bench top units. But, I have a 4 axis CNC, a 5 axis manual mill, and a small lathe (all bench top units).

I have lots of projects going, but I may be able to do something.

Matt

[lutach]

Here is what I had in mind. AWD braking. I've seen 1/5 and 1/4 scale use this, but mainly in the front wheel and a few do have them in all 4 and my idea will be inboard instead of them being at the wheel. I bought all the parts, but when came time to actually doing it, I was stuck with no time and skills to put it to work. It's easy and if I had the time I could actually do it. I even thought about going 4 discs in the front (Like a dual disc set up for each side) and 2 in the rear. I thought of using a similar set up like found in 1/5 scale, but also do something to utilize linkages to engage the brakes. I have attached a few pictures of the parts and the idea next to a diff case.

[lutach]

One more picture and the idea is out in the open. If someone can actually do this, I'll be happy if you can send me a system as well to put in a HV 1/8 buggy. Keep in mind this idea can be put in basically any scale.

[What's_nitro?]

Are you looking for traction control too? You would need a system to compare relative tire speed left to right and compare that to the throttle and steering input. Then all the linkages to control the 4 servos in sync. I can picture exactly what you're going for. Were you going to use the center diff bulk as a front and rear bulk as well? That would make it easier to mount linkages, rather than modifying a normal diff case.

Errr sorry for the semi hijack...

[lutach]

Originally Posted by What's_nitro?

Are you looking for traction control too? You would need a system to compare relative tire speed left to right and compare that to the throttle and steering input. Then all the linkages to control the 4 servos in sync. I can picture exactly what you're going for. Were you going to use the center diff bulk as a front and rear bulk as well? That would make it easier to mount linkages, rather than modifying a normal diff case.

Errr sorry for the semi hijack...

I was going to use the diff case and make holes to a suitable location for the brake pads and I was actually going to have the brakes pads in the front section of the diff, kind of like in a real car. I was going to try and make the preassure on both sides as equal as possible so that vehicle wouldn't push. If it's anything like my racing kart (Wish I could bring it to the US) it should be easy.

[glassdoctor]

Lutach... I have a few spare parts to do this. But I'm like you.... in that I don't know where I'll find the time. I will put it on the list of things to do though.

What I have been planning in a similar vein, is using a single rear brake disc on the rear gearbox, on the input shaft/rear driveshaft. This would give a basic rear brake ability. But your independent brakes would be pretty pimp. :D

[lutach]

Originally Posted by glassdoctor

Lutach... I have a few spare parts to do this. But I'm like you.... in that I don't know where I'll find the time. I will put it on the list of things to do though.

What I have been planning in a similar vein, is using a single rear brake disc on the rear gearbox, on the input shaft/rear driveshaft. This would give a basic rear brake ability. But your independent brakes would be pretty pimp. :D

The rear brake on the input shaft (front and rear) is nice and I tought of that (So did Ofna http://www.nitrohouse.com/details_hyper_9.htm), but it should be nice to actually have a system like the real cars.

[Peter Zicha]

Cool idea Luciano , I have tossed the concept of a servo/piston hydraulic/calipers system like a real car in miniature but some serious machining there

[BrianG]

The trouble with a braking system like this is weight, real-estate, and complexity. Adding a convoluted system would add extra weight, require more room to mount things, and introduce more complexity which would make it easier for things to break. Not to mention that machining things that small will make them more delicate, expecially since they will be taking a fair amount of force. The current method of having the brake on the CD makes linkages easy and relatively compact.

However, this idea would be really neat on something a little larger, like a 1/5 scale vehicle! The reasons I listed wouldn't as big of a deal...

[lutach]

Originally Posted by Peter Zicha

Cool idea Luciano , I have tossed the concept of a servo/piston hydraulic/calipers system like a real car in miniature but some serious machining there

Peter,

I've seen the things you do with aluminum and I know you will make one.

[lutach]

Originally Posted by BrianG

The trouble with a braking system like this is weight, real-estate, and complexity. Adding a convoluted system would add extra weight, require more room to mount things, and introduce more complexity which would make it easier for things to break. Not to mention that machining things that small will make them more delicate, expecially since they will be taking a fair amount of force. The current method of having the brake on the CD makes linkages easy and relatively compact.

However, this idea would be really neat on something a little larger, like a 1/5 scale vehicle! The reasons I listed wouldn't as big of a deal...

I've seen some really powerful mini or micro servos and I think it would add just a little more weight (Some weight is good for high speed runs), but you will have the stopping power to slow down from 100+mph runs. I will tackle this slowly and will take pictures of my progress. Bare with me when I say slowly I mean slowly .