Arachnid Build, ... or is it! (Highly Modified)

[theo]

Good post Bill. It makes one wonder how bad the ones are that are finished. The builder, driver doesn't really know how much better the kart would be if build correctly.

 

[Viper]

**** dude that is one nasty looking set up.

 

[redsox985]

Please sticky that!

 

[Bill CNC]

The drive line is all finished, ... Job Complete, ...

This is the last of the drive line work, ... Now its on to building double A-arms, the drag link the rear mount for all these parts to reside in! .

With a little machining on the hubs and a little grinding on the steering knuckles She came out like it all grew together. Weight of all pictured, ... 70#. The calipers will be facing the rear of the vehicle. The steering arm on the steering knuckles will be facing forward and a link from their will run forward and attach to the frame with a bushing to allow up and down travel of the suspension. The width at full extension is 53" and at full squat, ... 54.5". Just to give you guys some perspective of size, ... the coffee container is 8.750" tall.

Differential, ... 85 Toyota Tercel
CV/Halfshafts, ... 85 Toyota Tercel
Wheel Assembly, ... 94 Geo Metro

As far as the brake Booster, ... I'm not sure. One is the weight penalty. I already gained a massive amount of weight just from the Geo wheel assembly's. Plus locating it and running a vacuum line to it also. One thing, ... With the 12mm upgrade on the wheel studs, a considerable amount of bare stud extends past the disc face. I will need to run with a .250" wheel spacer.

Here are some pictures of the rear end.

 

[redsox985]

That's impressive. This is going to be a barebones car by the time it's done. Except it will last a heck of a lot longer than any car, it's built so well.

 

[theo]

Looks real good Bill. Is that how the center bearings are going to face?

 

[Bill CNC]

Looks real good Bill. Is that how the center bearings are going to face?

Yep, ... it's the easiest way to service them.

Pop the CV/Halfshafts out > un-bolt the bearings > slide bearings forward > remove chain from front sprocket > Slide bearings back and out.

Always looking for other ideas, mine are not the only ones out there, ... Cough, cough ...

 

[Bill CNC]

Boy, ... here is an embarrassing moment.

Can you guy's see anything wrong with the pictures above?

Well the Geo forum I belong to and have been getting help from on the Geo wheel assembly's, has pointed out a little flaw in my work.

Apparently the ( L & R ) are just not enough for me to understand sometimes. I have the calipers mounted on the wrong sides.

Look at the bleed screws, ... Can we say, ... You'll never be able to correctly bleed the brakes!

I'll fix it tonight.

 

[Bill CNC]

Tonight, ... I just swapped the calipers to their respective sides and I made a nifty Lil carrier. It will also double as a jig to pull measurements from as I design the rear end of kart.

I pretty much know how I want it, ... I just have to finish designing it and build it.

Now I can bleed the brakes.

.

 

[Bill CNC]

Does anyone have any good links, ... hell, ... any links for that matter, ... on designing or building the suspension part of an IRS system such as the geometry rules and what not?

thanks
Bill

 

[r97]

sry i'm coming up with nothing but model engineer prob has some pics of his side-winder, good luck

 

[theo]

Bill this is how I built mine. No camber at full droop and I believe 3 deg. at full compression. I did this with having the inside mounting for the a arms closer together then out at the tire. This means that both a arms are different length. Try and keep the line between the a arm hinge points in line with the center of the cv. or close to it.

[/IMG]

 

[bigfish322]

Theo what are the chances you can post a pic of the real thing to go along with your diagram... and label the parts (including manufacturer and whatever else you have)? I'm not a mechanic and just starting to read about this stuff, so the more info, the better. Bill, do you have any pics or can you post some showing how/where your driven sprocket and brake disc will mount on your setup? Thanks guys.

 

[theo]

I can start a thread on this rear assembly if there is interest.

 

[fowler]

i personall would like a thread on indipendant rear suspension, geometry and the use of the diff

 

[Bill CNC]

I can start a thread on this rear assembly if there is interest.

Jeezz Theo,

Nope, ... no interest here. :toetap05:

 

[Bill CNC]

Theo what are the chances you can post a pic of the real thing to go along with your diagram... and label the parts (including manufacturer and whatever else you have)? I'm not a mechanic and just starting to read about this stuff, so the more info, the better. Bill, do you have any pics or can you post some showing how/where your driven sprocket and brake disc will mount on your setup? Thanks guys.

bigfish322,

If you look at the pictures in the above post, ... You can see the disc brakes mounted at the wheels and the sprocket gets mounted on the differential in the center.

 

[fowler]

edge buggys mount the discs next to the sprocket

 

[bigfish322]

Bill... yes, sorry. I was thinking about another setup that had the single disc on the center axle. I guess my request on the driven sprocket piece is how are you going to mount it? Are you going to use a custom built hub?

 

[Silvergrizz]

I can start a thread on this rear assembly if there is interest.

Count me in , I am definitely interested. Already thinking about second kart with a motorcycle engine.