peej410 Posted October 24, 2005 Share Posted October 24, 2005 http://www.1speedway.com/swaybar35.htm The guy that i work for had a 35 inch 1.25 inch .120 wall sway bar that he didnt need so he gave it to me. the link above has the rates at certain lengths... the overrall width of the sway bar including the offset arms ill take care of but what i was wondering is if i intend to autocross and road race my car aswell as street drive it. how long should i cut the arms to? can i use the aluminum ones because im not really running a 3400lbs cup car? also, does anyone know if anyone makes aluminum bent offset arms? i want the bar to be adjustable, so what length range should i shoot for ? the car its going in has a SBC mounted 1.5 inches further back and 1.5 inches lower than JTR. my front springs are currently 225, i havent taken the rears out to measure them yet. they are springs i hacked out of a prelude my friend had because the car was way too scary with the stock springs. they will be replaced with real coilovers in the future. the car has a cage similar to what would required in an SCCA open top car. it has subframe connectors and the frame rails in the engine bay are 2x3x0.125 strut tower bracing front and rear. Front strut bars Rear cage section 2nd question. the guy with the race car said he would only give me the bar if i used needle bearings to install it and not bushings. i looked on mcmaster and i found needle bearings 8258K28 Sealed Precision Steel Needle-Roller Bearing for 1-1/2" Shaft Diameter, 2-1/16" Outside Diameter these are for running an inner race, the race is 8258K38 Sealed Precision Steel Needle-Roller Bearing Inner Ring for 1-1/4" Shaft Diameter, 1-1/2" OD the issue here is that the tolerance for these is .0010 to .0019 but my shaft (giggle) measures 1.253 with my caliper. is the difference the right amount to press the inner ring onto the sway bar without being too tight in the needle bearings? the carriers will be CNCed out of 6061, how much crush should i design into them so that they dont overload the needle bearings? if you cant tell ive never done a setup this extreme on a car before and given the cost of bearings and parts i want to get it right the first time around. thanks very much, you guys are the only people i trust with an issue this specific Quote Link to comment Share on other sites More sharing options...
tube80z Posted October 24, 2005 Share Posted October 24, 2005 You have a few too many open ended questions to completely answer this one. I will offer that you don't want to mount the bar in needle bearings. As the car flexes they will bind as they are not designed to deal 2-axis misalignment. A better solution, commonly seen on Trans-Am cars these days is to hang the sway bar from two heim joints. This will allow for bending of the bar and mounts as well as rotation. Another option is the pillow ball mounts you can find for many of these bars. They have a spherical bearing the bar goes through. Coleman, SCP, speedway should have all these parts. Cary Cary Quote Link to comment Share on other sites More sharing options...
peej410 Posted October 24, 2005 Author Share Posted October 24, 2005 You have a few too many open ended questions to completely answer this one. I will offer that you don't want to mount the bar in needle bearings. As the car flexes they will bind as they are not designed to deal 2-axis misalignment. A better solution' date=' commonly seen on Trans-Am cars these days is to hang the sway bar from two heim joints. This will allow for bending of the bar and mounts as well as rotation. Another option is the pillow ball mounts you can find for many of these bars. They have a spherical bearing the bar goes through. Coleman, SCP, speedway should have all these parts. Cary Cary[/quote'] hrm, well the needle bearing suggestion is from an Ex-Ohlins shock tech and someone thats been building race suspensions for 25 years. (not to undermine what your saying) what you said makes lots of sense hahaha. will the frame actually twist enough having the suspension crossmember and the front lower rad support only inches from where the bearings mount? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 24, 2005 Share Posted October 24, 2005 A spherical bearing is not a needle bearing. It is a heims joint. Quote Link to comment Share on other sites More sharing options...
peej410 Posted October 24, 2005 Author Share Posted October 24, 2005 A spherical bearing is not a needle bearing. It is a heims joint. thank you just a typo, ive been looking at this stuff most of the afternoon, trying to decide whats best and most economical. Quote Link to comment Share on other sites More sharing options...
peej410 Posted October 24, 2005 Author Share Posted October 24, 2005 thank you just a typo, ive been looking at this stuff most of the afternoon, trying to decide whats best and most economical. i called him and he said that a spherical bearing would probably be better in my situation. does anyone know what kinda rates the common sway bars that are offered have? Quote Link to comment Share on other sites More sharing options...
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