Sagaris Steering Arms
Discussion
To answer Matti’s question, if a car is in a heavy enough impact for one of these to fail, the damage to the arm is going to be a long way down your list of concerns!
I have made quite a few sets, some of which are away for plating at the moment. When I am happy that the finish and the price is ok I will get the rest plated and some will be available.
I have made quite a few sets, some of which are away for plating at the moment. When I am happy that the finish and the price is ok I will get the rest plated and some will be available.
I think everyone is worrying about material grades and applying a bit of Victorian engineering by adding a bit just in case, but we know more than the victorians about materials, and of relevance, the thing I am not very good at, the chemistry of metals, so today it is possible to select in an informed manner a suitable material that will be, simply put, strong enough. Strength in this application made to this pattern is not an issue, when I looked at these 12 years ago I thought “bit workmanlike those” and did think the part could be slimmed down to save unsprung weight if made from something different, just haven’t got round to it yet.
The dangers of over spec was demonstrated to me a long time ago; cap socket 12.8 bolts being tightened to a prescriptive torque on an aluminium billet clutch cover. All good simple old me thought, nah.... the material is too soft, it yields in service with vibration and whatever else is going on as engine torque is applied in both directions to the cover and the fastener that needed to be stretched to maintain clamping pressure is loose and as it doesn’t work in shear (HTs are so brittle) it all goes wrong.
Regarding Matti’s question about failure I have found one that was distorted where the track rod end bolts through, the chassis wasn’t so great either though....
The dangers of over spec was demonstrated to me a long time ago; cap socket 12.8 bolts being tightened to a prescriptive torque on an aluminium billet clutch cover. All good simple old me thought, nah.... the material is too soft, it yields in service with vibration and whatever else is going on as engine torque is applied in both directions to the cover and the fastener that needed to be stretched to maintain clamping pressure is loose and as it doesn’t work in shear (HTs are so brittle) it all goes wrong.
Regarding Matti’s question about failure I have found one that was distorted where the track rod end bolts through, the chassis wasn’t so great either though....
For info, I have an original STR8SIX development set on mine. It very noticeably reduced the bump-steer to negligible which is fantastic and you'll all enjoy BUT it also required me to raise the rack height a little with shims to optimise and achieve this.
It's still a slight compromise on the T350 vs the Sag because of the rack height, which could do with being a few mm higher still but not possible as it fouls something, but it's pretty close to optimum (which would be steering arms parallel with ground when static).
Before and after I've also run fairly trick Nitron 3-way adjustable dampers which took a lot of setup, and are still a bit firm for the road on soft settings, but flow over most B-road bumps, and I have a Lotus to compare how supple but controlled the suspension is overall (Exige still wins
)
A note of caution. They were fitted & suspension adjusted in all directions by Jason, but he subsequently had customers insisting on supply-only... then not adjusting it all correctly for toe/camber/castor and having big problems. I'm sure all here realise that a full setup must be done thoroughly, and re-checked after 50 miles.
It's still a slight compromise on the T350 vs the Sag because of the rack height, which could do with being a few mm higher still but not possible as it fouls something, but it's pretty close to optimum (which would be steering arms parallel with ground when static).
Before and after I've also run fairly trick Nitron 3-way adjustable dampers which took a lot of setup, and are still a bit firm for the road on soft settings, but flow over most B-road bumps, and I have a Lotus to compare how supple but controlled the suspension is overall (Exige still wins
)A note of caution. They were fitted & suspension adjusted in all directions by Jason, but he subsequently had customers insisting on supply-only... then not adjusting it all correctly for toe/camber/castor and having big problems. I'm sure all here realise that a full setup must be done thoroughly, and re-checked after 50 miles.
Gassing Station | Tamora, T350 & Sagaris | Top of Page | What's New | My Stuff