Biggelaar Tuning

One of the reasons that Biggelaar Special performance is renowned within the Ducati world is the tuning.
A process in which Jan van den Biggelaar is specialised in for more than 40 years.
Toine his son has continued to progress the art of tuning We explain in the text below what we understand to be tuning.
What is tuning, what does it mean for the performance of your Ducati, the capacity, usage and wear.

What is tuning?

Literally translated tuning means fine adjustment, also the word `flowed` or " blue printing" is frequently used. 
It is in fact a combination of several factors that revalue the performance level of your Ducati.

Here we will reveal some of our secrets to you;

We invite you into our workshop where you can watch our technicians at work, even the work being carried out on your own bike.
After the removal of heads, pistons and barrels the following work to the cylinder head is completed.
The gas flowing into the head is improved by increasing the inlet and exhaust ports.
We work on the valve seats and take them to the optimum opening which has the same effect as installing larger valves.

We then work on the inlet and exhaust manifolds and match them perfectly to the cylinder head ports.
The combustion chamber is reshaped and  the compression is raised, the heads are rebuilt and the engine is put back together.
The camshafts are timed correctly. Valve adjustment is critical and is carefully adjusted to our own settings from over 40 years experience of building engines.
The engine is then fired up and the mixture is adjusted, by changing the carburettor settings, or for injection models,
by remapping the eprom or we can install complete programmable motor management systems.

The next stage of tuning involves changing camshafts, pistons, larger valves and a higher compression. These modifications can all be done together or in stages.                                                      
Additionally it is important that your engine is balanced to make it run smoothly and remove the stresses on internal parts.

For standard tuning, performance and economy are increased without the loss of reliability.
Higher levels of tuning take an engine to it’s limits and reliability cannot always be guaranteed.                  
The more an engine is tuned also means that the periods between maintenance for the engine are shortened,
We know this from our own experience with tuning engines and our race history.

All this makes your bike perform better than before, giving more value for money, and of course much more fun …..

The result:

Your Ducati will perform better in every part of the RPM range and will produce more horsepower in high RPM.
A Dynorun is made  before and after tuning (if possible) so you will know how your bike performs after tuning.  

The tuning will be most noticeable when you ride your bike. More power is available at lower RPM ,
this also gives a longer lifespan for the engine because of the lower piston speed needed to give the bike the same BHP output as before.
The internal parts of your engine will also have less wear.

Are we allowed to do this?. For the many years of experience we think that we are obliged.

BE AWARE !!!!!!

Do not believe everything that is shown and presented to you.
Not all Dynometers give a true reading. Things like wheel slip and correction to crankshaft are sometimes fictitious and way too high.
A good  Dynometer will have a 2 tot 3 % wheel slip (we can measure it) and a correction to crankshaft should be around 12 % (tested this on over 50 bikes).

What we experience, sadly enough, is that a lot of Dynocharts use a wheel slip percentage of 5 to 7% or higher and corrections to crankshaft up to 17 %  or over.
Our Dynometer is built by TTE/Dynostar and is built with all the best qualities that other Dynometers offer, it is an easy tool to work with and is very accurate.

The results are accurate and come close to the figures most bikes should have according to factory specifications (specially Ducati is very accurate).
We have seen many examples of bikes that, according to other Dynometers, claim to produce more power then world superbike racers, (Ducati and/or other brands.)

Regularly motorcycles come to us which have been on a Dynometer elsewhere with a high reading on paper,
with the customer disappointed at the loss of 10 to 15 BPH after being on our Dynometer!    

One example was a Kawasaki ZX10R that produced over 200 BHP on another Dyno with just a Powercommander and after market exhaust.
The bike was put on our Dyno and a reading of a  153bhp at the wheel was found.

The most important factor is what is effectively gained from tuning rather than the Dyno reading.     
We measure the power to the rear wheel and the only correction we apply to our Dyno is atmospheric conditions without application of the corrections.
As well before as after the tuning so that the real HP is presented.
We can supply, if wished, a Dynograph with calculations to crank-shaft BHP that is as accurate as possible.

We have published on our website, a large database of many types of Ducati’s, with before and after tuning graphics.
Click here for the Tuning graphic page

Feel free to have a look at the Dynocharts that we present on our website.                                                      
All charts are completed with a small description of what is done to the bike. Specifically if the bike has an after market exhaust,
if camshafts have been fitted within the tuning, before and after tuning.

Yet another example of our ‘Open House Philosophy’ mentality!

Preview panigale tuning

D16RR tuned


Before tuning

Work in progress

Work in progress

Tuning finished

Intake finished tuning