Secrets of Speed Society

Secrets of Speed

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One of the magazines I subscribe to is Charlie Yapp’s Secrets of Speed. More than a magazine the Secrets of Speed Society is a community dedicated to high performance four bangers. Charlie has an excellent range of speed parts under the “Scalded Dog” brand name. The magazine content is excellent with very high quality technical information and tips.

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Take a look and join the Society!

Joe Jagersberger (Rajo Joe) Hot Rod Pioneer

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Joe Jagersberger came to the USA from Austria and began working for Case Corporation in Racine Wisconsin to assist in developing a race car programme.

Whilst working for Case Jagersberger was a regular race competitor including racing at the Indianapolis 500. He continued to race until 1911 eventually becoming victim to a career ending crash after which he spent several months in hospital and resulted in an amputation of his right leg.

Despite his injuries he continued to work at Case as a consultant. He continued to design cylinder heads and other peripherals eventually starting his own company under the famous Rajo brand. The name of the brand was formed from the RA of Racine and the JO from his first name.

Rajo started off by producing spark plugs and various other items. They then moved into producing  performance cylinder heads for Ford Model T and Model A cars.

The first design was the Model 30 which had 4 exhaust ports and one intake port all on the right side of the head. The Model 31 had two intakes on the right and four exhaust on the left. The Model 35C, first known as the “Improved Rajo Valve-in-Head” and later as the Model C had two intakes and three exhausts on the right. The Model A used the stock intake ports on the block. It had two exhaust ports on the right. His Model B two intakes on the right and four exhausts on the left. It came in three versions. The BB featured a higher compression ratio and the BB-R also included two spark plugs per cylinder.

He also offered a modification to the 1941-52 Chevrolet “stovebolt” L6 OHV 15 bolt head, which added another set of 3 intake ports above the 3 originals, to permit adding (an) extra carburetor(s) on a separate manifold.

Jagersberger died in 1952. The company closed in 1980.

Rajo equipment is still very much sought after and command very high prices amongst the traditional hot rod community

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Here on Hemmings are some great examples of  period Rajo powered racers

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1925 Ford Faultless RaJo Racer

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1922 Ford Model T Indy Board Track Racer

There are also some interesting Rajo ephemera items to be found on sites such as eBay

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Sources Wikipedia, Hemmings, trackforum.com

https://en.wikipedia.org/wiki/Rajo_Motor_and_Manufacturing

https://en.wikipedia.org/wiki/Joe_Jagersberger

 

 

 

 

Building a Four-Banger Model A Motor for Street and Race – Hot Rod Deluxe – Scotty Lachenauer

This is what I’d love to do for my Model A at sometime in the future (if I win the lottery 🙂

Traditional Hot Rod Four Banger Build

Traditional Hot Rod Four Banger Build

Scotty Lachenauer is following the build of a hopped up roadster for TROG

This episode covers the build of a four banger for the project, the article is here

 

If I had $4000 I’d Hit the Roof!

Hemmings Parts Classified FOR SALE Roof 101 Cyclone OHV and Manifold, Four Port, FORD NEW

Very desirable piece of kit for sale on Hemmings which would look great on my Sport Coupe.Only complication is that I can’t afford the $4000 to buy it….

 

 

 

Simmons Super Power Cylinder Head

Simmons Super Power Head

Simmons Super Power Head

My 29 came fitted with a Simmons Super Power High Compression Cylinder Head.

Whilst not high compression by today’s standards it increased the compression ratio to 6:1. The Ricardo combustion chamber design was licensed from Chrysler.

Sir Harry Ricardo (26 January 1885 – 18 May 1974) was one of the foremost engine designers and researchers in the early years of the development of the internal combustion engine. An exhibition of his work can be found here