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Author Topic: Front End Caster on a FED  (Read 10326 times)

Offline codysisson

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Front End Caster on a FED
« on: August 15, 2014, 09:52:36 AM »
I have been trying to find out what a good starting point for caster angle for a 180" FED. SBC, injected alcohol, Projected mid 8's 155 MPH.
I was told that a good rule of thumb was, 1degree of caster per 10 MPH of top end speed and I just wanted to back up that information. I have seen so many front ends at wide varying degrees of caster and cannot seem to find a consistent consensus.

I plan to dyno the engine next week, the roller is all done so I should be running mid to late September.
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Offline fuel749

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Re: Front End Caster on a FED
« Reply #1 on: August 15, 2014, 11:22:36 AM »
Your bound to get a bunch of different replies, but I can tell you that I run 12-14 degrees in every car I build with Anglia style spindles. No matter how fast they think they're going to go, thats what I put in them. There's usually enough adjustment to get a few more degrees to compensate for taller tires or tires that grow more on a run, but from the slowest cars I've built (100 mph) to the fastest (220 mph) I start them all the same. If NED is your home track and you're into nostalgia racing you've probably seen some of my cars run.
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Offline masracingtd1167

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Re: Front End Caster on a FED
« Reply #2 on: August 15, 2014, 03:39:52 PM »
Quote from: fuel749 on August 15, 2014, 11:22:36 AM
Your bound to get a bunch of different replies, but I can tell you that I run 12-14 degrees in every car I build with Anglia style spindles. No matter how fast they think they're going to go, thats what I put in them. There's usually enough adjustment to get a few more degrees to compensate for taller tires or tires that grow more on a run, but from the slowest cars I've built (100 mph) to the fastest (220 mph) I start them all the same. If NED is your home track and you're into nostalgia racing you've probably seen some of my cars run.
  Did you build Sam Dagir's car ?
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Offline H.G. Wells

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Re: Front End Caster on a FED
« Reply #3 on: August 15, 2014, 07:00:16 PM »
I run 13 degrees. 
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Offline fuel749

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Re: Front End Caster on a FED
« Reply #4 on: August 16, 2014, 05:42:02 AM »

[/quote]  Did you build Sam Dagir's car ?
[/quote]
 
Yes I did, in 2003.
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Offline masracingtd1167

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Re: Front End Caster on a FED
« Reply #5 on: August 16, 2014, 11:40:16 AM »
Quote from: fuel749 on August 16, 2014, 05:42:02 AM

  Did you build Sam Dagir's car ?
[/quote]
 
Yes I did, in 2003.
[/quote]   Sam's car is really nice !
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Offline rooman

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Re: Front End Caster on a FED
« Reply #6 on: August 17, 2014, 09:10:11 AM »
I build mine at 20 degrees, although Brendan Murry's is 30--his preference.

Roo
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Offline ss4

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Re: Front End Caster on a FED
« Reply #7 on: August 18, 2014, 01:50:13 PM »
I was told that same rule of thumb and it is working for me.  just ran 158 with 15deg.  I am pretty sure I could have run hands off the wheel the full lengthen.
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Offline codysisson

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Re: Front End Caster on a FED
« Reply #8 on: August 19, 2014, 03:03:48 PM »
Thank you all for your input. I have the axle set up now for 15 degrees and we will see how that works on the shake-down runs. I am sure it will be just fine!
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Offline JoydayVox

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Re: Front End Caster on a FED
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