Thank you fine Gentlemen for the kind comments. It is always very much appreciated!
To finish up the gear train for the camshaft, I needed the idler gear. When I designed the engine, I utilized stock gears from SDP/SI. SDP has CAD files for all their gears for download on their site, which is a tremendous help in the design process.
For the idler gear, none of the stock gears would fit my application. My solution was to use a stock gear and modify it to my need.
To illustrate the design of the idler, and to adjust the backlash in the gears, I attached a CAD rendering below. The hole in the crankcase cover is drilled oversize, allowing some adjustment.
The stock gear, as received from SDP:
In the lathe, the gear was then bored out to the correct diameter for the miniature ball bearing.
Parting off:
A bushing is turned, to hold the bearings, and to mounted it to the crankcase cover.
The gear, bearing, and bushing assembled:
The idler installed on the engine:
The finished gear train, with the camshaft installed.
To note is the line engraved on the end of the camshaft as mentioned in an earlier post, for timing of the camshaft.
Thank you all for following along, and stay tuned for more...
Yogi
