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

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r97

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when they lost my shipment it said, "your package has experienced an exception, an investigation is underway"
 

fowler

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an investagation as in they get a random worker to go and check the sorting office floor then give up

to be fair
if u say u think the sprocket cut its own way out then u cant bame ups
 

r97

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i'm not completely sure if thats what happened cause they didn't give me the box, but it did say the packaging was damaged, as for investigation, 5 min after that was posted i got an email saying i got a refund.
 

Bill CNC

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Well it appears I have stumbled onto another problem with the Ah-:poop:-nid, but this time it's "MY" fault. :eek:

Here is the problem,

With the CV/Halfshaft plugged in, I have 36mm spacing between the CV/Halfshaft dust cup and the differential as shown in the picture. The differential ends are where the bearing is supposed to be placed. The face is 18mm wide. The CV/Halfshaft surface is 32mm in diameter and has a face 14mm wide. That surface is for the dust seal to ride on and does not get a bearing. Considering since their is no bearing for that surface, it leaves room for a wider bearing. However, ... Seems the narrowest pillow block with a 35mm bore is 44.8mm wide. This is the same with 2-3 and 4 flanged bearings, ... 42.9mm up to 54mm.

My other thought was to support the assembly with a 75mm bearing on the CV/Halfshaft housing surface, ... But I am not sure if that is doable anyways.

One option is that if I cannot find some narrow pillow blocks or flanged bearing, ... is to grind the outer edge of the bearing, but that will remove the locking set screws. I'm not sure what the locking set screws purpose would be if I am going to sandwich the differential between the pillow blocks.

Another would be to make my own pillow block and use a regular bearing inside it. More work than I want to preform.

I think my only SANE option is to just grind down past the set screws to get me to 35-36mm in the (l) dimension shown.



 

Wobbly

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Hey Bill. Quite surprised to see you using mm, I thought you guys only worked in Imperial? Could you machine down the diff shaft to the same dimension as the CV shaft and mount the bearing in between the two?
 

Bill CNC

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Hey Bill. Quite surprised to see you using mm, I thought you guys only worked in Imperial? Could you machine down the diff shaft to the same dimension as the CV shaft and mount the bearing in between the two?

It wont make a difference, ... the total width of the two surfaces is smaller than the bearing itself.
 

Bill CNC

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No, ... Oddly the right is longer than the left, it's usually the other way around. If you are meaning will the CV/Halfshafts go on either the left or right knuckle, ... I don't see why not, ... unless I'm ready for more bad news. :worried2:

I bought (2) right (passenger) side CV/Halfshafts.
 

Bill CNC

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Using the parts from the Tercel in my opinion, ARE a great option and very doable for IRS, ... if I can just gather all the parts in front of my face. Off the shelf INEXPENSIVE CV/halfshafts, machine a sprocket mount, weld the spider gears, slightly mod the bearings, and get the knuckles.

So far the rear drive cost me;
Free Differential
$153.00 2 NEW CV Halfshafts
$35.00 35mm Square flanged bearings.

$188.00 for a complete CV'd axle assembly, ... It is sure a hell of a lot cheaper than anything I have seen out their.

Like a sore :censored:, ... you just cant beat it, ... well unless you bring a gun! ;)
 

theo

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I have used sever GM half shafts and with them one is a female and the other is male. So with a tercel the male half shaft will fit into both sides of that diff you show?

I have seen builders weld up the openings in that 3 rd member and install a grease fitting. The also say that it works great.
 

Bill CNC

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I have used sever GM half shafts and with them one is a female and the other is male. So with a tercel the male half shaft will fit into both sides of that diff you show?

I have seen builders weld up the openings in that 3 rd member and install a grease fitting. The also say that it works great.

Yes, the CV Halfshafts will go in either side. The shafts have male ends, the differential has female openings.

There are (2) small openings on the flanged side at 180* and (2) more on the other end. The hole is similar to a water pump leak hole but a water pump only has one. I going to put grease fittings in one, and seal the other up for good

As far as covering up the 2 gear openings, ... I was going to take some sheet metal and put it on my slip roller to get the shape and then screw them on with a gasket and fill it with some grease.

I was also thinking of an O-ring between the CV halfshaft and the differential to seal the shafts to the differential so I wont have grease coming out of that joint.

Sealing the differential, looks to be a simple project in it's self.
 

Bill CNC

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I have seen builders weld up the openings in that 3 rd member and install a grease fitting. The also say that it works great.

To be honest with you, ... I don't know jack about building a kart, ... But I am learning fast.

More or less the differential was by accident.

It was offered as a, here, ... take it. The guy was going to toss it and then he mentioned it to me as a possible suggestion during my, IRS knowledge quest. I must say, ... it's a gem of a solution. :thumbsup:
 

Bill CNC

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I wanted to know how wide all this was going to be. To my surprise, ... It's not as wide as I thought it would be.

From the center of the differential to the hub surface is 24" exactly. So with the full Axle assembly compressed flat, it will measure 48" between the hubs. Cool thing, ... With it in full tilt boogie, ... I have 9.250" of travel until the IRS is flat. :drool5:



 
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