Rivarossi driver diameter wasRe: BLI Y-6 wishes

Sat Apr 23 21:43:04 EDT 2022

The Rivarossi model dates from the late 50s early 60s.  Back then grossly
oversized flanges were common,  especially on European models.  In addition
models need a bit more clearance between wheels than the real thing.
 Rivarossi kept the wheelbase more less scale, and the outer diameter
including the flange pretty close,  which resulted in ~50" drivers.  Later
they improved things a bit with smaller flanges resulting in ~54" drivers.

On HO scale models of steam locomotives, NMRA recommended flanges,  a
choice has to be made between correct driver diameter and correct
wheelbase.   All models are compromised to some extent.

Nigel

On Sat, Apr 23, 2022, 6:24 PM NW Modeling List <nw-modeling-list at nwhs.org>
wrote:

> What's the story behind the Rivarossi driver being undersized? Did they
> reuse the driver from another engine or something?
> Or is it just that models in general were just less accurate back in
> the 60's when they introduced it?
> Mike Rector
>
> On Sat, Apr 23, 2022 at 5:01 PM NW Modeling List via NW-Modeling-List <
> nw-modeling-list at nwhs.org> wrote:
>
>> I’ll join the list of those having suggested BLI do an Y-6/Y-6a. If I
>> recall correctly, I emailed them shortly after they announced their Y-6b.
>>
>> I noted that the Y-6’s and Y-6a’s outnumbered the B’s by nearly 3-to-1 on
>> the N&W. And living about 15 miles from the prototype 2156 at the time, I
>> even volunteered to measure/photograph it for them.
>>
>> Their emailed answer to me was, boiled down, thanks but no thanks. I took
>> some solace in their at least getting the driver diameter correct, unlike
>> the ancient Rivarossi model. LOL.
>>
>> Andre Jackson
>> Sent from Yahoo Mail for iPad <https://overview.mail.yahoo.com/?.src=iOS>
>>
>> On Wednesday, April 20, 2022, 3:31 PM, NW Modeling List <
>> nw-modeling-list at nwhs.org> wrote:
>>
>>
>> Certainly Broadway LTD has not been hampered in producing Pennsylvania RR
>> locomotives.  It seems like a new PRR release every month or two.  Many
>> years ago at the NMRA National Train Show in Philadelphia I spoke with a
>> representative of Broadway.  They had already produced the Y6b and I
>> suggested they could use the same mechanism and do the Y-5, Y-6 and Y-6a
>> boilers.  I know Harold Davenport also suggested this to them but obviously
>> nothing has come of it.
>>
>> It is my understanding that the PRRT&HS Modeling committee gathers
>> together all the necessary documentation and travels to Florida to meet
>> with the folks at Broadway to promote a new locomotive.  I have even heard
>> a representative of the factory in China is often in attendance. Of course,
>> it seems like anything with "PRR" on it sells well.
>>
>> Jim Brewer
>>
>>
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