Rajo Jack At Portland in 1923

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Model T Ford Forum: Forum 2013: Rajo Jack At Portland in 1923
Top of pagePrevious messageNext messageBottom of page Link to this message  By Jay - In Northern California on Tuesday, September 10, 2013 - 08:41 pm:

Talk about seat of your pants!


Top of pagePrevious messageNext messageBottom of page Link to this message  By chris becker on Tuesday, September 10, 2013 - 09:13 pm:

Jay do you have any other pics of RAJO Jacks racer. I am acquiring parts to build a bob tail along the same lines as this or Noel Bullocks racer from 1922.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger Karlsson, southern Sweden on Wednesday, September 11, 2013 - 02:43 am:

Here's two more pictures:
rajo jack
rajo jack 2
All three from Don Radbruch's book, "Dirt Track Auto Racing", pages 11 & 12, I think.
Note it's built offset on the axles since it was raced on tracks with only LH turns :-)
There was a poster here a few years ago who built a racer with inspiration from Rajo Jack's first racer - Jason:
http://www.mtfca.com/discus/messages/50893/70694.html?1226082820
http://www.mtfca.com/discus/messages/80257/80579.html?1240536288


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger Karlsson, southern Sweden on Wednesday, September 11, 2013 - 02:57 am:

Looking further at Rajo Jack's spring setup.. looks like he didn't have any spring shackles, that would mean something had to give when the axles moved up and down - likely the springs, but also the radius rods and perch bolts in the front - no good idea for a road driven speedster. But there are ways to make it work without putting high strain on the components..
I wonder if Jason has finished his racer?
Jasons rear setup


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