SCCA Enterprises Technical Bulletin 006-2016
SRF / SRF3 Auxiliary ballast location
New auxiliary Ballast location has become necessary due to the widely varying weight of GEN3 converted cars.
Steel ballast plates for the new approved location have specific dimensional restraints and no exceptions, the ballast plates are composed of 3 parts (2) mounting tabs (1) weight plate.
• Mounting tabs must be 7” X 1.5” +/- .125” no less than .125” thick “Nominal Steel”
• Weight Plate “Steel” 5” to 7” wide, up to .500” thick and 27.650” +/- .150” with mounting tabs total length.
• Weight plate must be fully welded to the mounting tabs, “may not be offset” on tab and bolted to left and right main lower longitudinal frame tubes minimum size of 5/16” and no less than (4) bolts, nuts and washers.
• Ballast plate installed within 1” front and or rearward of the 1” anti sub belt mounting tube. See diagram below
Note: Due to small variance of the lower longitudinal chassis tubes width, Length of the ballast plate should be fit to a specific chassis.
Drivers right side of the ballast plate mounting tab will need to bolted between the shift lever bracket and or the shift linkage pivot bracket and frame. Depending on the thickness of the weight plate used, the lower edge of either bracket may need to be trimmed.
It is advised not to alter the mounting holes in either bracket; doing so will change the height of the shift shaft and can cause shaft clearance problems with the frame and or engine oil pan.
Note: No other shift linkage modifications are allowed, Butler or fiberglass seats may need Clearance.
Example: Common mild steel plate and the approximate weight
7” X 27.250” X .250” 14 lb / .375” = 21 lb / .500” = 28 lb
5” X 27.250” X .250” 10 lb / .375” = 15 lb / .500” = 20 lb
SCCA Enterprises TB 006-2016 Auxiliary Ballast
3 posts
• Page 1 of 1
Mike Davies
SCCA Enterprises |
|
Still Learning to Type
Posts: 30
Joined: Sun Nov 19, 2017 1:35 pm |
Glenn |
Glen,
Your frame is not standard, those mounts were added after the fact in the field...that was an "approved update" for people that wanted the lap belts to rap closer to the width of their waist. Modify the ballast mount tab to fit your frame...bottom line.... you do not want a 15/20 lb object bouncing around in the cockpit during a big impact. Mike Davies
SCCA Enterprises |
|
3 posts
• Page 1 of 1
Return to SCCA Enterprises Technical Bulletins
Who is online
Users browsing this forum: No registered users and 1 guest