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Copyright 2021 - Copyright Stefan Vapaa 2016

Bo Lindman

  • Owner Name: Bo Lindman
  • Location: Sweden
  • Contact This email address is being protected from spambots. You need JavaScript enabled to view it.This e-mail address is being protected from spambots. You need JavaScript enabled to view it
  • When did you purchase your Formula S: 2012
  • Serial #: none, modified firewall area
  • Body color: Red
  • Chassis color: Yellow
  • Engine: SAAB 850 GT with single carburetor (Solex 40 AI) and special inlet manifold. Standard displacement. The inlet, transfer and exhaust ports are modified according to group 2 rules. Distributor is Bosch VJ3 BR11T (locked centrifugal regulator)
  • Transmission: Standard SAAB 1966 4-speed with close ratio Special 1 gears and a special final gear with very high ratio, the number of teeth on the ring and pinion is not known at the moment.
  • Wheel & Tire package: Rims are modified 850 GT (4-bolt pattern) that have been widened to 6 inches in front and 8 inches in the rear. Tires are Dunlop Vintage Racing.
  • Brakes: 850 GT discs and calipers on all wheels.
  • Ownership history and / or racing history: Previously owned by Saab Competition Department for evaluating of concept and raced by Sigvard “Sigge” Johansson in a few Swedish F3 races, from 1967 by Ronny Eriksson in Swedish F3 and club racing. After an earlier restoration, used for demonstration runs in Sweden and Finland.
  • Intention to vintage race: Intend to race in Swedish and European historic racing in 2015 after restore and rebuild.

Comments: Former owner comments: I am not able to find any chassis number on the car because the rollover bar has been modified and reinforced according to the Swedish safety regulations. I am not using the original fuel cells in the frame, also according to safety and an additional fuel tank has been located just behind the driver's position.

Ronny Eriksson purchased the car in the autumn of 1967.

The car was rebuilt during the winter of 1993-94.

photo is not mine - credit to the original photographer

Click to go to the photo gallery.


Bo Lindman is re-restoring his Formula S

Last week, I saw on Facebook that Bo Lindman is working on a nut-and-bolt re-restoration of his Formula S. He contacted me with some questions about the original chassis color and possible replacement front uprights.

I'm afraid I wasn't much help with his questions.

Original frame color? Yellow, but I don't know what yellow.
Replacement uprights? None except those remaining in private collections.

Since his front uprights are off of the car now, he is going to have them scanned and imported into CAD. Then, if ever necessary, anyone could contract to have them machined using that information. If you need a set for your car, ask Bo or me about it and we'll try and put you in touch.

I asked Bo if it would be OK if I put information about his restoration here. He said OK!

"Feel free to put any info as you want about my restoration on formulasaab.

Below is some photos from the work as it is for the moment being.

The fat old grump in the car is the owner... The two guys working on the frame is my friends Johan and Micke, formula Vee and Formula 2 historis racers.The young lad in the car when it went to my garage is my son Anders, waiting to take the step from Rotax 125 cc Karting to a real racer. The engine is one of three to this car. This is the 960cc.  And at the last Micke trying to make some old welding looking better."


I mentioned to Bo that I thought the car would be faster and handle more agreeably with a smaller wheel and tire package than the one I last saw fitted. He agreed...

"Im fully with you about the tyres!

The current wheels is 6,5 in front and 9,5 at rear. Its according to the Formula 3 regulation of 1966-1970 for 1000cc cars. This one was competing for the Saab factory in the Swedish Championship with Sigvard Johansson at wheel in 1966 and probably some few races in 1967. From the very beginning with 4,5 in front and around 5-5,5 at rear. Then Ronny Eriksson upgrade that to current dimension probably in 1968 or 1969, still in the Formula 3 class. Thats the background of this car little odd wheel set up. I have run the car twice back at the late nineties. As i remember I find it very stabile at track compared to Formula Vee. The total performance allowed my at that time to run away from all Fvee:s and catching up on the field of Formula Ford 1600. But I was even then in that opinion that the car was oversized at the wheels. The power output is not at that level...

My plans is to run the car at Formula Junior dimension at the wheels.

Means around 4,5-5 at front and 6,5 at rear. Whats your opinion about that idea? (will start with a 850cc singel carburetor Gr2 engine at 86,7 hp)"

All of the sales literature states that the Formula S was specced with standard SAAB 15x4 wheels. However, from my experience, the chassis is set up to oversteer in most situations. My dad's car has 4" front wheels with 450-15 tires and 5" rear wheels with 500-15 tires. In that configuration, the car is well balanced and very driveable. It is still a little tail-happy in most cases, but that is what you want in a formula car.

With that in mind, going with the Formula Junior specs of the time should give you a nice handling car, in my opinion.

Notes on Ronny Eriksson's car

Here is some information from a letter Ronny wrote to Tom Cox who was the acting Formula S registrar at that time.  I am writing excerpts from the letter and removing the few personal notes.

The letter is dated January 9, 1995.




"As far as I know, my Quantum is the only one in Sweden, and it was bought by Saab's competition department for evaluation and some competition. The driver in the picture in Anders Thunberg's book "From 2-Stroke to Turbo" is Sigvard Johansson, an employee at the Competition department at the moment.

The car was modified to race under the European Formula 3 rules and that is the reason why it today has a number of modification compared with the original specification.

At the competition department the car was equipped with Saab 850 GT disc brakes at the front and also at the rear.
The engine was changed to a bored GT 850 with a displacement of 940cc.
The Formula 3 rules was allowing a displacement of maximum 1000cc at that time, in combination with a single carburettor with a maximum size of 36mm for the throttle.

In the documentation that follows the car, we can see that displacement of the engine was mentioned to be 996cc, and that included a crankshaft with increased stroke.

I did buy the car in the autumn 1967 from the competition department. The car had already at that time been checked by the scrutineers and has passed the regulations for the Formula 3.

After that I did compete with the car regularly to 1975. I have also tested the car on ice, with studded tires, and on "dirt track"!