Dear Welder Series…
Please recommend one of your kits to replace the existing crappy, poor handling, death trap rear suspension set up I currently have on my ’30 Ford roadster. I would like to keep the buggy spring set up if possible. If not, would your 4 -link rear triangulated universal kit fit my needs? maybe the 4- link kit Modal A with rectangular frame rails be better?
This is a great looking roadster. In trying to get a good ride, there are a number of things working against you.
Heavy spring. My guess is that the back end of the car doesn’t have much suspension. You could try removing some leaves from the middle of the spring pack to see if that gives a softer ride.
No shocks. This is probably because with the size of the spring, the suspension is pretty solid and so shocks would only be going along for the ride.
Short bars will produce a choppy ride. The layout is interesting and I don’t have a problem with the 3 bar system. The nature of the car means the bars have to be short and this causes a choppy ride.
The upper bar clevis likely doesn’t have a bearing. If the bolt is tight, the clevis will pinch the mounting plate and won’t want to let the suspension work. If the bolt is not tight, the wear will be on the bolt, the mounting bracket, or both. Clevises are not designed to do the same type of job done by a spherical rod end (Heim). A rod end would be the thing to use at the front of the upper bar.
I don’t see how the frame is stabilized left-to-right, except by the spring shackles. A transverse spring will let the frame move left to right as the shackles rock. This will give a weird, ill-handling feel. A Panhard bar will correct this problem. http://220.127.116.11/online-store/panhard-kit-universal-rear/
Our rear 4-link kits will give a much better ride but I don’t see how there is room for one. The frame brackets would have to be changed so there would be enough ground clearance.
My suggestion is to see if you can make changes to some of the areas noted above. The car seems to have some clever workmanship and it might only require some tweaking to improve the ride.
Thanks for looking at Welder Series parts.