smallbrother
Elder Statesman
Errors aplenty, progress slow, but progress nonetheless!
Posts: 2,269
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Post by smallbrother on Oct 27, 2021 13:31:17 GMT
I'm sure I've seen reference to this subject somewhere, but cannot find anything.
Anyone got any ideas?
Pete.
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mbrown
Elder Statesman
Posts: 1,724
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Post by mbrown on Oct 27, 2021 13:43:44 GMT
I assume the wheels come without balance weights.
Don Young described a neat way of doing it by cutting cardboard templates to the profile of the weight and clamping them in position. He then filled the gap between them with Isopon car body filler. When it was set, he machined the front and rear faces to smooth them off and filed it smooth between the spokes. If you miss a bit you can always add a touch more filler.
I used this on Lyn to convert Torquay Manor bogie wheels into 2.5" gauge drivers. It worked very well - albeit Holmside wheels are a good bit bigger.
Malcolm
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barlowworks
Statesman
Now finished my other projects, Britannia here I come
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Post by barlowworks on Oct 27, 2021 16:18:56 GMT
I seem to recall on YouTube a channel called no23mk2 who fitted balance weights to his 9F wheels. There was a photographic record but I can not remember which part it was in.
Mike
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Post by ettingtonliam on Oct 27, 2021 17:01:48 GMT
Very similar method to some full size wheel which had plates rivetted front and back and the gap filled with lead.
I presume with Holmside you just want the visual effect, not bothered about actual balance?
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jo479
Hi-poster
Simplex, Pricess of Wales, Prairie, N24X, LNWR Jumbo, Jeannie Deans, 7 1/4 Lion
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Post by jo479 on Oct 27, 2021 17:18:52 GMT
I used Plasticene to fill where the weights didn't go, then Isopon with bits of solder chucked in for good measure, that was on Simplex in 1984, still going and nothing has ever moved.
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smallbrother
Elder Statesman
Errors aplenty, progress slow, but progress nonetheless!
Posts: 2,269
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Post by smallbrother on Oct 27, 2021 21:06:10 GMT
It's not so much a cosmetic exercise as trying to resolve vibration when I go over a certain speed. Scale shunting speed and passenger hauling are not a problem, so not a critical issue.
Another Holmside owner told me about this solution a few years ago.
I wonder, do those small weights make that difference in miniature?
Pete.
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Gary L
Elder Statesman
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Post by Gary L on Oct 27, 2021 23:47:37 GMT
Very similar method to some full size wheel which had plates rivetted front and back and the gap filled with lead. I presume with Holmside you just want the visual effect, not bothered about actual balance? Indeed. That is the Swindon way, as used on Paddington. If you get the plates laser cut (very easy to draw in CAD) I would think it is easier and better than messing about with bits of cardboard and car filler. You will probably get enough balance from the plates without needing to add much (or any) lead. I found achieving a true balance very difficult (read: I gave up) but the consensus seemed to be that a truly accurate balance (whatever that is- there were several ideas in full size) is not necessary in our sizes. Gary |
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don9f
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Les Warnett 9F, Martin Evans “Jinty”, a part built “Austin 7” and now a part built Springbok B1.
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Post by don9f on Oct 28, 2021 16:57:54 GMT
Just another idea....I fitted plates either sides of the spokes, then part filled the spaces with araldite, thus looking like lead!
I would imagine that trying to balance the wheels on a model loco “for real”, would involve much trial and error, as the weights have to balance reciprocating forces as well as rotational ones.
Cheers Don
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