The Jalopy Journal
Discussion in 'The Hokey Ass Message Board' started by kurtis, Jul 18, 2009.
BTW - love the bow tie.
This is YouTube where you can see the whole Monterey racing weekend. I had to start last in Group 2A. because I had drop out of the qualifying race. Unfortunately they concentrated on the leaders.
I am asking this question because I am confused, happens a lot. In the the newest SOSS magazine there is a very good article on the 1931 Indy race. On page 30 there is a phantom view of a rocker assembly that Fred Duesenburg designed. It shows two rollers on the rocker arm that contact the cam, one to open the valve the other to close. This would be similar to desmodromic valves, but is on the rocker instead of valve itself. Now my confusion. Say if the base circle is 1.000 the inside contact of the rollers on the cam would also be 1.000. When the opening roller hits the cam lobe wouldn't there have to be an opposing recess for the closing roller to go into? If the lift is .500 wouldn't there have to an opposing .500 recess with the same duration? Or am I not seeing something? Does anyone have any better pictures or diagrams of this setup? Thanks in advance.
^^^^^^^^^^^^^^^^^ Brave man asking that question on a Flathead site. Bob
Can you post a photo?
And WHO made the rule that this is just "a flathead site"??? Are overhead valve/cam motors suddenly "outlawed", &, more importantly WHEN did this happen, ESPECIALLY on this site??
Sarcastic remarks are posted among friends, because most people get a kick out of them.(Note funny face)
Bob may have had "A Brain Fart"! He probably thought he was on the Bangers Meet thread! LOL
Yeah! A lot of us don't subscribe to Yapp's SOSS. No photos, Roger Huntington in his "Design & Development of the Indy Car" tells of Fred Duesenberg developeing a cylinder head for the 260 C.I.D. Duesenberg Model A passenger car engine. The cam had special lobes that operated dual finger rockers that opened and closed the valves (like desmodromic). The standard engine could make 4000 r.p.m.. A de-stroked 240 C.I.D. engine made 4,400 r.p.m.. According to Huntington, both engines made about 140 H.P.
'37 certainly has the right to bust my balls. After all I rode him at Hershey for half a day. I will post the drawing later tonight, I need to mow grass while the sun is still shining.
Ok, the battery was dead on the mower so I killed some stuff with the backhoe. Hopefully the picture will show. Thanks again for looking.
I think I know the drawing; it's probably from a 1931 article in The Motor. If it is, then you go wrong in assuming that one roller is there to open the valve, and another to close it. In fact, the second roller is for the exhaust valve rocker, and just "shining through" in the drawing. It's drawn with a dotted line to merely show its position, while the relevant parts of the inlet rocker are in gray. The closing assist is done by a "finger" (the 1931 caption calls it a "shoe") on the underside of the rocker that looks a bit like a trigger for a gun.
Well, yes, that's the same drawing. It's actually the same article, copied in a 2017 magazine??? Strange world...
It looks like the rocker arm is captured by the valve. The caption mentions a finger to help close the valve. Similar to a Desmo!
OK. so the roller on the right is not attached to the left one? That makes more sense. Thanks.
While we're on the same page is the MILLER 16 in the top photo a sister engine to the Frank Lockhart LSR Stutz Black Hawk engine?
Now don't go there, Old Dawg- all of my 'Bangers are OHV from the factory, and a couple (Crosley/Homelite) are OHC!!!
Sister engine, yes, but different. The Sampson actually had two engines side by side, geared together to drive a central shaft to the flywheel/clutch assembly, while the Lockhart engine had two blocks (actually, two times two blocks) on a common crankcase with two crankshafts and a central drive shaft (A "U16" configuration). The principle is the same, but the execution different.
Apologies if this has been asked before. I looked quickly but didn't see anything.
Anyone know anything about the roadster shown at 1:56 in this video of the 1937 Pikes Peak Hill Climb? It's a remarkable sight among all the sprint cars.
Thank you! Whats with all the traffic he had to dodge?
I assumed those were practice runs, maybe. I also note that when the roadster re-appears later on it's wearing a number (8) that wasn't present before.
I have found where Ralph Hankinson promoted 14 different racing programs between June 5th and October 16th of 1926, mostly in the northeastern U.S. These races were sanctioned by the National Motors Contest Board whose onsite representative was Earl Newberry. Among the more prominent drivers that appeared in most of the races in this series were Billy Wynn and Bob Robinson. I haven’t been able to locate any other promoters of N.M.C.A. races except Hankinson and I have not been able to locate any races sanctioned by that body either before, or after this series of races in 1926. Can anyone tell me more about the National Motors Contest Board? Thanks for your help.
Ralph Hankinson broke with the IMCA at the end of the 1925 season, and had his "circus" running under the name of National Motor Contest Board for 1926 before he affiliated with the AAA in 1927. Bob Robinson was the star driver of his troupe, along with Doug Wallace and youngsters Billy Winn and Jimmy Patterson, and they all changed allegiance along with him. When I'm home, I can add a bit more flesh to the story of the NMCB. Meanwhile, here's http://forums.autosport.com/topic/148375-reading-fairgrounds-pennsylvania/#entry7640759 a bit of background about Hankinson, IMCA, AAA and the times.
Here is the racing mask of an old friend that raced pre-war IMCA Fairground Horsetracks
BATTLE READY! MEN!!!
I realize I don't have that much on the NMCB.
Dates and meetings:
June 5, Mount Holly/NJ
June 12, Ormstown/Quebec
July 3, North Adams/MA
July 5, North Adams/MA
August 17, Rome/NY
August 20, Saint Johnsbury/VT
August 28, White River Junction/VT
September 6 pp to 7, Paxtang/PA
September 11, Rutland/VT (?)
September 17, Altamont/NY (??)
September 18, Altamont/NY (??)
Septemebr 18, Reading/PA
October 2, Hanover/PA
October 9, York/PA
October 16, Greensboro/NC
* Altamont events are questionable, more likely sanctioned by local club Dirt Track Drivers Association
Fred "Swede" Yonally
Mack (Jack?) McClure
Tony (Ben?) Galliano
Toots Campos (Campo?)
Jimmy Nordi (Laranzano?)
Most of the drivers were from Kansas City/MO or thereabouts, except Robinson who was from Florida, Wallace from Tennessee and Riff from New York; some were typically listed with fake hometowns, such as Torino or Milan for Galliano, Campos and Nordi, also Minneapolis for Yonally or Indianapolis for Wallace, Los Angeles for Robinson. Cars were typical dirt track racers for the day, Dodge, Essex, Chrysler and Fronty Specials, a Duesenberg, Hisso, one or two (American) Fiats. Hippodromed? Possibly, but not necessarily. Most of the better drivers did well in AAA events 1927 and later, some like Robinson, Winn or Patterson even excelled.
RE : The Pikes Peak film. What's with the whitewall tires on the sprint vars?
Looking for any info I can find on the following race car frame that came into the shop this week. Here is what we know so far:
Circa 1948, built by the Bowman(r)? & Marks Tank & valve company, address unknown
Built for or by Tommy Concannon of NYC. He raced for years in the area.
Possible input from Zora Duntov
We think that it was powered by a 60 V8 as there is little room for anything else. No witness marks anywhere of brakes, gas pedal, gauges etc. The owner thinks that it was test driven around the parking lot and then torn down, never used after???? The owner today has had it in storage for over 20 years. He wants it built as it may have been for a collection piece.
Look closely at the belt..... all have a date printed on the webbing.
The lightning holes a interesting as the save almost no weight. Easier to get the dive to diet a couple days
My thought is don't race after Thanksgiving Dinner!!
This and previous post from the book Specials by John Bolster 1949
Separate names with a comma.