Is there a special type of string used to replace the exisiting string on the 345 unloader, and, where can one get it? Can you use some type of fishing line? Any tips on tuning up the 345 Unloader? Thanks a lot…you guys are super help!
cbtrainman,
For the postwar 345, try this link. It mentions a special “unwaxed” 12 pound fishing line. See page 1 at top right. Many toy train parts suppliers, probably including Olsen’s at the linked site.
Three thoughts come to mind from personal experience:
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Take great care handling the sprocketed “film” portion of the drive mechanism;
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Make sure the counter-weight is unlocked and moving freely before operating the device.
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Ensure that all moving parts slide or roll smoothly. As I recall, I used sparing amounts of graphite where absolutely necessary. No oil or grease anywhere. Avoid using any lubricant is at all possible. In all events keep lubricants completely away from the string.
http://pictures.olsenstoy.com/searchcd31.htm?itm=285
Edited: final two sentences added.
bf,
I rubbed some powdered graphite onto all of the lines, including the vibrotor drive line. My 345 runs much better now. Since the graphite is a dry lubricant, I doubt it will cause damage to the lines. BTW, the part number for the line is 345-80.
jimtrumpie,
One can’t argue with success. However, I remain impressed with Lionel’s old specification for “unwaxed” fishing line, although I don’t claim to understand it; unless it’s to provide just enough friction to turn the little wheels, as they apparently were designed to do. Lubing the string in any fashion would seem to work against this.
But is it really necessary for them to turn at all – other than for mildly interesting mechanical appearance?* One might think that if the wheels didn’t turn, and merely provided a series of smooth, soft corners for the string to slip around, it would work just as well – which may reflect your experience. I presume the graphite turned the white string a very dark gray, for better or for worse, depending on your personal taste.
I just remembered another stage in the rehab. I purchased a new string, eyelet and spring. The eyelet (Part # 342-129) was apparently attached to the string and the armature at the motor-end of the system by some unusual factory-crimping method, which is virtually impossible to duplicate in the home workshop. I substituted a drop of 5-minute epoxy. So far, so good.
As in “all the bells and whistles, and tiny wheels that spin…”
thanks guys for the help; appreciate the tips,
dave
bf,
In the service manual, Lionel states in the 464 lumber mill section that waxed line could be used, but it could stick to the pulleys in storage. Even with the graphite, the wheels still turn. I didn’t use much. I just put a bit on my fingers and went over each line once. I haven’t noticed much of a color difference. I read about the graphite in a thread about a 128 newsstand on the other forum. Supposedly, that tip originated in Lionel’s factory service department. Before I tried this, my 345 didn’t run as smoothly as others I have seen. I agree completely with you regarding not using any oil or grease.