I happened across an old advertisement for a TT rep built by Malcolm Tucker. The copy mentions that it had hydraulic dampers per the original works cars. Is this a typo or did the works TT cars really have an arrangement of hydraulic dampers?
Thank you Stuart and Steve. So they were used front and rear replacing the friction ones. But only on works cars, correct? Were they something that original EA Sports and Super Sports owners would have fitted as an aftermarket mod as well? I have not heard of others using them on their Ulster Reps.
I suppose there was nothing to stop a private owner fitting luvax. I can recall seeing two such examples, one a VSCC special and the other a Chummy. It doesn't seem to be a thing that happened often. Expensive, perhaps? I suspect not too easy to find nowadays though Steve might be able to comment on that.
Luvax shock absorbers were widely used in the '30s and there are specialists supporting them. However I rather suspect that there may not be sufficient travel on the A7 suspension for them to function well. Might be OK on the back though.
On page 271 of the Source Book, picture 671 there is a picture of a Luvax shock absorber as fitted to the rear axle and picture 672 says" A 1930 Sports Two Seater in all its glory. Luvax shock absorbers were fitted to the front axle. Just my twopenny worth
The dampers in this picture don't look like Luvax to me. The body of Luvax is circular, these look to have indentations around the casing.
I have seen dampers like this fitted as after market to Morris 8s. I knew them as 'snubbers' and the body is filled with rubber which is distorted as the lever moves and uses the hysteresis in the rubber to damp the motion.
Interesting that they are mounted on the axle rather than the chassis.
I can guarantee that they are Luvax as that's my car on p271 of the Source Book and I took the photo after jacking the car up and much wriggling to take it! Apparently they were offered as an extra alongside 'works' cars of the time. I'm not sure whether they made much difference as already mentioned there isn't that much movement especially where they are located on the front axle but the same must be true of the friction types. However, a few years ago the car was most flattered when a chap with VSCC and Bugatti experience said that it was one of the best Ulsters he'd ever driven (round Goodwood). The car was 'lost' for about 20-30 years when it was stored in a dry barn following a rather tragic slightly unrelated story. Fortunately for me, this 'rest' kept the car's mileage down and therefore it drives almost like a new car (much like my Mk2 Ruby ADY 95 that is mentioned in Rinsley Mill's Book Original Austin Seven).
My goodness, this is becoming hard work. Eric I'll possibly forgive you if you haven't got a Source Book and haven't seen seen p271 otherwise I give up ! The photo that I took quite a lot of trouble over is of the rear shock absorbers !!! So they are fitted to the front and back axles.
My goodness, this is becoming hard work. Eric I'll possibly forgive you if you haven't got a Source Book and haven't seen seen p271 otherwise I give up ! The photo that I took quite a lot of trouble over is of the o/s rear shock absorber !!! So they are fitted to the front and back axles.
As far as I can remember, when we had VE 4492 it was indeed fitted with Luvax shock absorbers front and rear.
They were fitted at the works for Seyd, the first owner for Brooklands use.
However, the arrangement devised by the works was pretty dreadful.
At the front the shock absorbers are fixed to a length of steel bar which is in turn bolted to the two holes on the very front of the chassis. It's all very flexible.
At the rear the shock absorbers are bolted to brackets fixed half way along the axle tubes thereby increasing the unsprung weight considerably. The arms are anchored to the ends of the very wobbly chassis extensions.
The Luvax shock absorbers are very heavy compared with Austin friction types.
The rear shock absorbers can be made out in this enlargement of a pic from Austin Harris's site...
I have these two photos of the Waite accident at Ballystockart, just up the from where I live. I cannot really see how the Luvax dampers are linked to the chassis. Has anyone a drawing of the link or an original one to copy? I hope to eventually fit these to my car, they are already on the front.
I have two drawings of the front and rear of the Works Cars suspension clearly showing the hydraulic shock absorber fitment. Unfortunately i have yet to work out how to post pictures, so i have mailed them to the long suffering Ruaraid with a request to post them for all.
Weighing in on the Rotaflo shocks, Dad fitted a set of these to the back of his '30 Triumph Super 7 Tourer over 25 years ago and they have been a great success, totally transformed the ride and the road holding. They came off a '50-'60 Lanchester iirc.
The arrangement on the NZ Duck restored by Grant Cowie differed from this drawing. Instead of the damper being connected directly to the rear axle, this car had slave arm more or less parallel with the spring pivoted off the chassis with a link up to the damper mounted on the bracket shown in the drawing posted here. Don't think either arrangement helps with understanding the ulster mounting though.
The works drawing is curious. The radius rods would seem to give negligible braking bracing but with short levers and the high friction turn in cable perhaps like old time Indianapolis cars braking was not intended.
It is hard to devise a workmanlike fitting for hydraulic sas at rear which utilise normal length arms, and Austin did not solve.
The handling of lowered models is obviously very different from stock cars, and the sas more effective with light body, but nevertheless I marvel that anyone could average 83 mph around reputedly bumpy Brooklands without the aid of hydraulic sas
Austins were skinflint not fitting to the Big 7. Even Ford Y had.
The Luvax damper on the rear is mounted to a two piece casting on the axle. I now have these castings. It occurs to me there very well not be a good photo of the linkage. Maybe a case for making what looks right and more importantly works!