Hello Kenneth, On the mandrel as you are facing the machine and the crank is on you right the markings on the mandrel will be on the left of the mandel on the side with the two holes. On the feed screw it is marked on the left as well. Most people never notice the markings, what model of Triumph do you have? Below is my upgrade mandrel article. I included the info on the Triumph C but with so few known it is very unlikely you will ever see one. Steve
I was able to find a copy of a letter Edison sent to his dealers telling about the different mandrel upgrades for the home and triumphs. If the dealers needed a letter, how much more will this information help us? Here are some things that I have found from the letter and myself. The lengths of the triumph feed screws are as follows: The A is 4 27/32" and is marked T D A I and TA on the feedscrew and the mandrel. The B is 5" and is marked T D B I, TBI, or just a large TB on the mandrel and the end of the feed screw is also marked. The C is 5 1/4" and is marked T D C I on the feedscrew and the mandrel. I have never seen a C except for a pulley. The D and E (and F I assume) is marked T D only. The pulley is marked with an A B C or D. Homes: The home is marked H B I, IHB or H A B I for the A & B and H C for C. The home D and higher is marked H D. If you put a Triumph B mandrel on a Triumph A you have to move the upper bedplate to the right all the way to compensate or the belt hits where it goes through the lower bedplate. My Triumph A has a B mandrel on it. I believe the pulleys are the same, and think the shifters on the C kits have the lip like the D and higher does, but I have only seen one home C and one triumph C with the kit so I can’t say for certain. Less than 7 Triumph C’s are known and the Home C is very uncommon. Until I saw this letter on eBay (I did not win it but purchased a photocopy from the winner) I did not know they made 5 different ones. If anyone wants a copy of the letter e-mail to them please contact me. Steve Terry Baer: The model C used a unique mandrel assembly with "captured" bearing. Picture an early two minute mandrel shaft. Remove the mandrel and turn down the area under the mandrel to about 5/16" leaving the larger 5/8" feedscrew. Now slip on a bearing that is 5/8 OD 5/16 ID. Now slip on a mandrel with smaller 5/16 holes on both ends. Now slip the whole assembly in the top works. > Date: Thu, 2 Aug 2012 10:22:10 -0700 > From: [email protected] > To: [email protected] > Subject: Re: [Phono-L] Looking for triumph mandrel > > Steve, Where are they marked on the mandrel/feed screw? I will look again > but I didn't notice any markings. > Ken > > > ________________________________ > From: Steven Medved <[email protected]> > To: Antique Phonograph List <[email protected]> > Sent: Thursday, August 2, 2012 8:13 AM > Subject: Re: [Phono-L] Looking for triumph mandrel > > There are three different lengths. > > There are three for the triumph and two for the home and they are all marked > on the mandrel and the feed screw, which do you have? > > > Date: Thu, 2 Aug 2012 00:04:04 -0700 > > From: [email protected] > > To: [email protected] > > Subject: [Phono-L] Looking for triumph mandrel > > > > Hello everyone, > > > > I am in need of a Triumph mandrel and rod for a 2/4 conversion. I have all > > the other parts but hope someone here has one they can sell. Please > > contact me off list. > > > > Just a note, I am still working on my story and hope to have it finished > > soon for all to read. > > > > Thanks, > > Kenneth > > _______________________________________________ > > Phono-L mailing list > > http://phono-l.org > > _______________________________________________ > Phono-L mailing list > http://phono-l.org/ > _______________________________________________ > Phono-L mailing list > http://phono-l.org _______________________________________________ Phono-L mailing list http://phono-l.org
