Bristol Cars - Owners and Enthusiasts Forum  

Go Back   Bristol Cars - Owners and Enthusiasts Forum > Bristol Forums > 6 cyl Bristol cars

6 cyl Bristol cars Type 400 to 406 - restoration, repair, maintenance etc

Arnolt Bristol Front Spring Rates

Reply
 
Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 03-06-20, 06:42 PM
Member
 
Join Date: Jul 2008
Posts: 99
Default Arnolt Bristol Front Spring Rates

Does anybody have any experience with having springs re-tempered. I would like to do this for 3020 but I'm not sure of what information the spring rebuilders would need.
From Ken Oakes notes on his calculations for the 404X projects he states that the front spring rate is 81lb/in per wheel with a frequency of 75 cps. This is not too far from the article in the Automobile Engineer article on the Bristol 400, which stated a total spring rate of 250 lb/in for the front spring or 125 lb/in per wheel with a frequency of 83 cps. As the spring shackle is the base of the spring I think the spring rate and wheel rate would be very similar.
Thoughts would be appreciated.
Peter
Reply With Quote
  #2 (permalink)  
Old 03-06-20, 11:32 PM
Member
 
Join Date: Nov 2008
Location: Long Beach,CA
Posts: 46
Default Arnolt Bristol Front Spring Rates

You might find my article on Racing Arnolt Bristols of interest.

Check: frazernash-usa.com/Bristol/RacingArnoltBristols.htm
Reply With Quote
  #3 (permalink)  
Old 15-06-20, 05:32 PM
Member
 
Join Date: Jul 2008
Posts: 99
Default Arnolt Spring Rate

Thanks Bill. You really did stiffen the front springs. I won't be racing my Arnolt and would like to get the ride similar to the original conditions. Based on your previous advice I had Henry Velasco make me two billet crankshafts. Very pleased with the results.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT. The time now is 01:29 AM.


This is the live site

Search Engine Friendly URLs by vBSEO 3.6.0 PL2