Mysterious small nut RGB gear ratio - 17 to 19 teeth

[Crashbox]

I've searched the forums and parts catalogues but couldn't find any reference to the small nut tranny stub axles (19 teeth) and matching upper gears (17 teeth) I bought at Hessisch Oldendorf last year. These give a RGB ratio of 1:1,12 as opposed to the common 1:1,39 (18/25 teeth) and 1:1,4 (15/21 teeth) ratios for 55-63 busses.

Any information as to whether this was a factory option would be much appreciated!

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[thom]

Unless I'm missing something, your gears don't match the parts book

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-Thom
1956 Single Cab
1957 Porsche 356A Sunroof
1957 23-Window Deluxe
1957 Mercedes Westfalia single cab
1963 Unimog 404
1965 E-Type

[Lind]

the shape of those gears is unlike anything I have ever seen inside a reduction box. and I have had in my hands BD reductions, early small nut, late small nut, little big nut, big nut, and alpine gears. they are not listed in any of the dozens of parts lists that I have seen from '55-'70s.

my questions are who machined those, how long did it take, and what harness steel did they use?

how much did they cost?
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[hazetguy]

[Clara]

Who made those?
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[sub-hatchtim]

im sorry but im not good at math what does this gear configuration amount to
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[Busryder]

[Crashbox]

Thanks for all your replies!

[Ojai63dbl]

Nows the times to get the specs measured on those gears.

It sure would be a nice option ot go with that configuration for a RGB box for those of us i nthe flatlands, that want speed but want originality look.


Can we convince you to get the specs drawn up by a machinist and then maybe someone would be interested in a pre purcahse run of these - of course everyone would want to see what the price would be for a set.


Its be interesting to know if they were an option perhaps they were made out of Germany (i.e south africa or australia - true flat landers)

[BarryL]

My guess is that they were small nut prototypes and the engine couldn't keep up so they never went into production. Now with ga-ga motors they would be a small nutter's nirvana. It's like the Holy Grail of the RGB keepers.

[slow36hp]

http://www.thesamba.com/vw/forum/viewtopic.php?t=294439&highlight=reduction+gears

http://www.aircooledvwsa.co.za/viewtopic.php?f=4&t=9375&hilit=reduction+gears&start=15

try the fourth post down might give some answers
prototype mostly assuredly
vw prototype not likely

[krisbeetle]

that seems to me like a fairly pricey en-devour for a one off. how much did they cost you? where did the person before you get them from?

[mightymouse]

.............................

I want a set. asap! Need to pull these off, ship them to weddle or ppg and have them copy them. Man thatd be so sick.
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Note to EVERYONE.
Know your ZDDP levels or you WILL lose a cam and lifters.

[krisbeetle]

[andreou]

They are from a split ambulance.

[Rick]

Those look pretty beefy. Am I wrong or do the tips of those gears look thicker than others I've seen? Whenever I see a chipped tooth on an RGB gear it's usually only the tip, and these gears appear thicker. Would be nice...

[Eric&Barb]

Found an interesting though a little hard to read thread about Soviet captured examples of KDF Beetles in Russia.

http://www.thesamba.com/vw/forum/viewtopic.php?t=670747

One is a 1945 that has the RGB open:

Looks like similar design.
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