Conservation of 1913 Emblem

[moritz]

UPDATE 21 Dec 2023

My apologies, I have been delinquent in posting status of my Emblem.

Some have seen me at Oley or Upperco this summer, and may have seen article in July-Aug Antique Mag..
I have open a Youtube channel, moritz_emblem with about 9 small videos of the phases of conservation (they are supposed to open in sequence).
Please be tolerant where I misspoke. I have intentions of posting a slide show of individual parts and repairs.

I ride in my neighborhood at least twice a month (weather permitting) She wants to go.......I have to restrain her speed due to using the original spokes (still out about .60) front and rear.

Many thanks to all the AMCA members who have educated and mentored be along the way.
================================================== ================================================== ===================


Received expert help from members at Oley Show and got her started after 70 years!
I will post pics and videos in near future.
Bike is now operational and I'm riding it around locally.


Current baseline of the bike is as follows.
Guidance and or recommendations are welcome for remaining tasks in bold.

1) New engine rings, head crosshatched, exhaust & intake valves ground and reseated, carbon removed, Carb rebuilt (into the Wilderness), cam levers welded/brazed, new head gasket and bolts // remaining to be accomplished; final settings of intake and exhaust and timing replacement of intake rod (incorrect now).

2) Frame adjustment of front forks and repair weld of frame crack, fender braces aligned.

3) Gas / Oil tank; Rust removed (95%), // new fuel line with filter (minimizing carb issues) and oil lines installed

4) seat leather used, seat frame operational, new wooded pan and Lether sewn to the original seat.

5) Clutch // At OleyRandy Walker removed a clutch plate, and I replaced 33 tooth sprockets, now operational.

6) Wheels are usable, three spokes replaced mountedwith cooker button tires

7) Battery installed, coil and condenser, braded spark plug wire, coil, toggle switch and timing connection set

8)tank transparency manufactured locally

Cheers Ken

[moritz]

Sad that I can get responses via facebook vs post to this forum......

maybe im just not receiving all your responses......

[T. Cotten]

Sad that I can get responses via facebook vs post to this forum......

maybe im just not receiving all your responses......

I'm surprised, Ken,

Your carb rebuilder didn't have fuel line ferrules and nuts in stock.

....Cotten

[moritz]

thank you for the response. I did not know enough to ask "into the Wilderness" when he did my carb.
sine then, as in all things, my experience as grown.
I got a carb nut and flare from "Walker Machine Works" but the problem is still the tank nipple fitting I believe it is 7/16 27 .432 pitch Dia.
Thats what Im looking for now.
VR Ken

[exeric]

It sounds like you're looking for a 1/8 NPT (national pipe taper) pipe tap, or fitting. They are 27 t.p.i. and approximately 7/16 at their big end, and letter R drill is the tap size. That is a common tap, and fitting size and available at any ACE hardware store. The problem is; what is the fitting size on the other end? In my experience, many motorcycle manufacturers made proprietary fittings that may be common on one end (1/8, or 1/4" NPT), but too their own specifications on the other end. I've had to make all of the fittings for Ex, Hen, and Merkel because you'll never find any of those fittings at an ACE hardware store. Motorcycle plumbing is a sub-genre in itself.

Can't leave out Indian, or Harley-Davidson that made the weirdest of all MC fittings.

[T. Cotten]

My best guess since I found your previous post, Ken,

image_36038.jpg

It might be 1/8"npt on top, and 7/16"-27tpi straight thread for the nut.
The ferrule is unique in that it is radius'd rather than beveled like most

Assuming your tanks have been cleaned thoroughly, pump fuels these days are relatively clean, so any fouling in the carb would most likely be a disintegrating air valve or float.

Most of us would clean and dress the original hardware, and use it.

....Cotten

[moritz]

Cotten thank you for the response.
I have the 7/16 -27 nut being locally mfg with nipple.
this should resolve my fuel and oil line issue.
thank you.

[T. Cotten]

For the nut, Ken,

I just opened up a 62361-50 out of most catalogs with 5/16" drill for the ferrule. They are usually cad, though...

More correct profile nuts, and ferrules, are available from fickauprototypes@cs.com

....Cotten

[exeric]

I know my replies sound snarky, but that's not my intention. In regards to your thread size of 7/16 x 27; I have never heard of that size, and it isn't listed in the Machinist's Handbook which means it isn't an industry standard. There is a 7/16 x 28 which is called 'extra fine'. . . 20 t.p.i. being fine thread. If your male, and female thread are indeed 27 t.p.i. they will have to be single pointed in a lathe as there is no standard, or special tap, and die of that size. I would not be surprised if your fittings are 27 t.p.i. as manufacturers are notorious for making fittings, and fasteners so weird that you have to buy from them.

[T. Cotten]

I know my replies sound snarky, but that's not my intention. In regards to your thread size of 7/16 x 27; I have never heard of that size, and it isn't listed in the Machinist's Handbook which means it isn't an industry standard. There is a 7/16 x 28 which is called 'extra fine'. . . 20 t.p.i. being fine thread. If your male, and female thread are indeed 27 t.p.i. they will have to be single pointed in a lathe as there is no standard, or special tap, and die of that size. I would not be surprised if your fittings are 27 t.p.i. as manufacturers are notorious for making fittings, and fasteners so weird that you have to buy from them.

Snarky belongs to me, Eric!

I first encountered 7/16"-27 straight thread working for the guv'ment, and was taught it was British pipe thread. But it is common for American motorcycle carburetors.

Taps and dies are readily available from MSC, etc.

Mr. Fickau also has 24tpi nuts; Must have been for Indians, because I sold out.

....Cotten

[exeric]

I've used 1/8 NPS x 27 t.p.i. taps and again, it wouldn't surprise me that a manufacturer would produce those plumbing sizes. My Merkel uses1/4, 5/16, and 3/8 x 26 t.p.i.nuts and bolts in odd places. I found a source for those taps from a company in India and they are of decent quality. Couldn't find those sizes in the U.S. or should I say, I'm too cheap to pay the price for specialty taps

[RichO]

Moritz, If you send me a PM with your mailing address I will send you some period Emblem stationary. Rich O.

[chuckthebeatertruck]

to clear this up, the early editions of machinery’s handbook do list 7/16-27 UNS, It is a common thread size for brass piping, and yes originally from an obsolete british pipe standard. Per those editions, all brass gas pipe is threaded 27tpi regardless of diameter. this is in reference to both straight and tapered threads.

because of constant updates, the 2nd and 22nd editions of most reference books will contain different information, and often the stuff we need to reverse engineer is found only in the early editions. i snap up prewar reference books when ever possible.

i “learned” there were “different” threads when i worked on my first bike with pre-war british cycle threads. until then i hadn’t seen them in my life and was super confused. bsc is the 26tpi thread referenced above. Loads of high quality bits can be had from uk specialists.

a great summary of all the threads used on early bikes can be found in Radco’s Vintage Motorcyclists Workshop book. pdfs are floating around.

[moritz]

I had the flare nuts and nipples manufactured locally, I got lucky.
im still looking for tap & die to chase what looks to be .230 OD thread 27tpi again....
any suggestions would be appreciated.

[T. Cotten]

I had the flare nuts and nipples manufactured locally, I got lucky.
im still looking for tap & die to chase what looks to be .230 OD thread 27tpi again....
any suggestions would be appreciated.

I'm confused, Ken!

(Its easy.) Can you show us this quarter-inch part?

A caliper on a tap or bolt will always be shy of the nominal size, so I might wonder if its https://www.mscdirect.com/product/details/74840265

But you never know...

....Cotten