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Anyone have or know where I can find the dimensions for ET162 steady plate distance piece?
Please and thank you.
Please and thank you.
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It was probably considered penance for anyone who committed some sort of sin in the machine shop. Like peeling spuds in the military.
Thanx for the mcmaster carr, i ordered a bunch of shims today, after having some lasered form C70 hard steel (at a price...) at 0.1 till 0,6mm all diameters...I guess we should not be surprised that Greg has had to deal with all sorts of problems, including variable camshaft lengths. He has no way of controlling what shows up at his door for fixing.
I build with all new gears and spindles. It may seem excessive, but the reliability of these engines is incredible with a new timing chest and I feel that is a very important requirement for a racer. I use only Megacycle cams because of the quality. I use all the Maughan parts for the timing chest, including the big idler boss. I use the shoulder of the large idler boss as the datum, but I have never had a cam that exceeded the height of that datum. In fact, the datum from the idler boss is quite a bit higher than the instruction sheets anticipated, so those stated dimensions are often of little use to someone assembling a new timing chest.
There is no washer called for behind the camshaft between the shaft and the case, but when lining up the followers with the cam lobes I am always forced to install one in that position. This means that I have to install the same size shim under the other gears to keep the steady plate level. Fortunately, the Arbor shims from McMaster Carr are up to the job and I have never found any cupping or softness when using them.
I suppose the answer is that you need an initial datum location when setting up a new timing chest and the shoulder of the large idler boss is quite tall and easy to install in place. If you have to shim behind the cam to align the followers to the lobes then the top plane of the cam gear becomes the new datum that requires the remaining gears to be adjusted to this new dimension with the object of keeping the steady plate flat.
Bill is spot on about the Simmonds nuts on the cam spindle. I run a tap through the nut to score the nylon. I also run them on and off an old cam spindle held in a vice. There is nothing worse than tightening up this nut and having the 5/16" threaded stem break off due to the high friction fit provided by the nylon insert.
Assuming you have followed this thread, do you still think folks shouldn’t make their own? I guess the same question goes for anyone who liked your post. Although this thread turned out to be very informative thanks to those that contributed in a positive way, I think it is unfortunate that folks who don’t have something positive to say, feel the need to chime in. It tends to drive technical discussions off line. Or perhaps discourage them completely.Why should any supplier bother to stock these items if punters are going to buy one and make the rest themselves?