Calculus Bikes

Looking for something really special, or off the peg?

The ultimate cheat-sheet to some awesome non-main stream manufacturers: https://pinion.eu/en/bicycle-manufacturers/ Enjoy!

Couldn't watch any more dots so drove through to Doolhof to welcome Heinrich home yesterday. What an amazing effort from him on the ride and Alex and team on the event. Well done and thanks for putting CALCULUS on the map!

Heinrich moves to a solid second place! Well done to mix it up with the pro's.

You just have to love a bit of local flavor mixing it up. Just shows you the pedigree of amateur SA riders we have. Hats off to the guys and girls that put in the time and effort and balancing it with work and life.

Ok, we will play: How does 30% discount on a project sound if we have more than 150 entrants in the pool?

A Custom geometry one I assume?

Should we not have a bit of a prize for the winner of the pool? Any suggestions?

Final touches over the weekend, here she is: https://www.instagram.com/p/BqnNsGMnzds/

Nice and clean setup!

Local, boutique, custom Ti frame, drop us a line

How are those rigs looking from the weekends testing? Would love to see some of your setups (if it's not too secret)!

Final prep begin!

All cheers for Heinrich from our side and he will also be taking a secret weapon to the race...

True, we only work with Ti, which is much lighter than Steel, as well as Alu. Your welcome to send a PM for some more info on a custom project.

Something custom to make sure it fits her?

Hi, TIG is used for Ti welding as any O2 is a very bad thing when welding Ti. Indeed we consider fatigue and material/weld flaws. It would not be very good engineering if we didnt. We did/do FEM analysis on stress/strain of the flex-plate to make sure it does not come close to yield point. Apart from that, many 1000's of km by our frames on terrible corrugations and tough conditions confirms the analysis. Hope this answers your Q's. Let us know if you have any more.

We are based in Hermanus, your welcome to pop in any time if you are around.

PM Sent

In the Northern Suburbs, we have worked with Irma on custom projects for Munga riders and she is indeed a worthy recommendation.

Good Luck, hope you can find it!

True, the fun of a world full of experts.

Hi Jonesy. Glad you approve of the work we are doing. We really try our best to put the rider in the center of the design process to deliver something special. Every smile thereafter we get from a client shows a job well done. Pricing for a gravel frame like Zandre's is R35k for the total custom titanium design project from bike fit to delivery. Check your PM for further details. Kind regards Millar

Our guys used their kit (baggies and AFRICAN shirts) at the Sani, and it was superb!