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on May 17, 2010, 2:31 pm, Mustsed wrote:
Hi everybody,
I received my 3.73:1 gears today and now the install becomes a little wind again. I will drop my differential and the new gears to a shop tomorrow and start cleaning up the rest of the stuff.
My alignment plate is not straight at all and I would like to replace it if possible. I couldn't locate a new or used one over here and toughed of making one with the laser cutter in town. To do this I need the exact specs if possible in a format that is industrial.
Anybody happen to have such a drawing?????
Mustsed
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what exactly are you referring to when you say alignment plate?? n/m
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I mean the most lower plate where the .................
cage mounts too in the front and back. This is the plate you see when you look from the bottom of the car.
I've read that this plate alignes the wishbone location and keeps it solid.
Mustsed
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I don't believe it alignes it.
the wish bone alignment is a function of how the side brackets bolt to the differential. That is why there will some times be alignment shims between the side brackets and the differential.
It is my understanding that the bottom plate is there to maintain alignment, and keep things from moving during use. by tying the side brackets and tie bars together it makes all the pivots fixed so that they do not shift at all.
With that said it is not precision part so you should not need to have it precision machined. You should be able to take measurements and make one out of some plate by drilling a few holes.
Last edited by Daze (10/08/2011 7:36 pm)
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I think they are there to properly align the........ wishbone brackets. On my first IRS install I missed one of two shims on the brackets and it was almost impossible to start a screw in the threads.
My guess is that the plate aligns and the brackets hold the wishbone in place.
Since I have access to a Laser cutter, I sometimes overkill my mods but this one would be good to be true as possible.
Mustsed
Last edited by Daze (10/08/2011 7:37 pm)
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well that makes sense, if you have access to a laser cutter than use it. I know a guy in my area that could put it in to CAD, but It would probably cost $50.00
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Make your own Mustsed ... if you don't find anyone that has a drawing and you want to make one yourself I can help. I made mine from 3/8" aluminum ... the horse ... well that is a long story.
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I like it, especially the cut-outs, we have similar taste
here are my cutouts on my LCAs
How come you used 3/8" I would think that 1/4" would have been sufficient. It is my understand that a general rule of aluminum vs steel is that aluminum that is half again the thickness of a similar grade steel will give you a similar strength. in other words if you were to make something out of 1/8" mild steel, than 3/16" non alloy aluminum would be of similar strength (not the same as the properties of both metals are different, but functionally the same for many applications), and the same would apply with alloy steel versus alloy aluminum. I realize this is all very imprecise as different grades of metals and different alloys have different properties so you cant just assume the half again rule in all applications.
I have always found it to be a good rule of thumb for the "home engineers" like my self who use basic understanding, and common sense as a starting point and then over build the item from that point to compensate for a lack of total understanding.
All that said the original plate is 14-16 gage. Taking in to account the stamping ads strength I would think that some where on the order of 1/4" would fit the bill.
Thats my opinion, but I can't weight to here yours. If there is one thing I have learned in the last couple of weeks is that you are very calculated (I love that by the way) and I have no doubt there is a really good reason you used 3/8" plate, and I can't weight to here what it is
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