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Works left engine cover http://ducatittandf1.com/viewtopic.php?f=10&t=11279 |
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Author: | Superantah [ Sun Jan 10, 2016 8:04 am ] | ||
Post subject: | Re: Works left engine cover | ||
Mike, I'm glad my work arouses interest in worldwide ducati enthusiasts, as much that in Italy. Unfortunately, for now, this isn't my work but only secondary occupation, for this reason my development time are long. I'm available to answer at all question about my work. Paul, what tipe of ignition do you use? Is it this? http://allumage-electronique.blogspot.it 30 degree is perfect for road use, but in my opinion for race use this value penalizes the high range. For this reason someone, also in Italy, use a simply mechanical and manual system to change the advantage, only to easily start the motor. Ciao
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Author: | huit [ Sun Jan 10, 2016 8:16 am ] |
Post subject: | Re: Works left engine cover |
Sauro, yes that is the ignition I am using. I will try 32 to see if there is a difference at the top end. Thanks Paul |
Author: | marcotoys [ Tue Feb 02, 2016 5:13 pm ] |
Post subject: | Re: Works left engine cover |
Sauro Collini has now installed a Sachse Electronic ignition system on his F1 (a real NCR built F1). In my opinion, his engine is now running much better at idle speed and rev up fast. Watch the short video on his blogspot : http://superpantah.blogspot.ca/ |
Author: | boucher [ Sat Nov 12, 2016 12:57 am ] | ||||
Post subject: | Re: Works left engine cover | ||||
Hello Ducati souls, just a few questions on the works cover. If you use the dyna type ignition (750 bevel) you would set it at 30 degrees advance. So it will have 30 degrees at idle as well as top Rpm ? The pickups in this photo look like pantah type. Would they run the Bosch boxes with the ignition set at 30degress? Boucher.
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Author: | marcotoys [ Sat Nov 12, 2016 6:43 am ] |
Post subject: | Re: Works left engine cover |
Hi Boucher, I am not sure I can answer all your questions. But, I will give you my input and I will ask Sauro Collini (Superpantah) to jump in. Sauro Collini has installed his ``works inspired left cover `` on two of his Ducati. On his Pantah, he has installed Dyna pick-ups (on the cam driving shaft) and removed the Bosch ignition boxes. His Pantah rides with a fixed ignition advance. On his 750F1 (and I am doing exactly the same on mine), Sauro has installed an Elektronic Sachse ignition kit (Hall effect pick-ups, black ignition box with 8 different advance curves to choose from). In my opinion, it will be the best set-up. There is someone else who is currently offering another very interesting kit : It is Liam Venter (Fast Bike Gears in New Zealand). In this case, the Hall effect pick-ups installs on the lower cam pulley (hence right side of the engine). But obviously, it does not allow us to reproduce the ``works left side cover set-up``. The few lessons I have learnt : The original pick-ups mounted on the 750F1 have little coils in them. This old technology produces a less accurate signal. In particular, the full advance degree you set reduces itself by approximately 1 degree for each 1000 additionnal rpm. It is possible that the Bosch or Kokusan ignition boxes correct this effect. I don't know but since they are old technology I suspect that they don't correct the retard effect induced by the pick-up colis. Hall effect pick-ups are of modern technology. Elektronic Sachse and Ignitech (used in Fast Bike Gear kits) use Hall effect pick-ups. In the case of Dyna pick-ups, I don't know. Hall effect pick-ups produce accurate signals everywhere on the rpm curve. Original pick-up coils mounted around the flywheel produce lost sparks. At high rpm, this does not leave enough time for the coils to reach their maximum voltage output. Pick-ups installed around the cam driving shaft induce half less sparks and leave twice more time for the coils to reach their maximum voltage output with the side benefit of running less hot. I hope this help. Gilles |
Author: | Wolf [ Sat Nov 12, 2016 10:11 am ] |
Post subject: | Re: Works left engine cover |
Since I'm also fiddling with ignition systems on Ducati motors since some time my thoughts to this topic: If ever possible, I would get rid of the Bosch ignition, not because it is bad but only because ther are better techniques available nowadays. Anyways, the Bosch system was a great step forward 40 years ago. As mentioned before, I'm a fan of the ignitech ignition - the TCIP4 offers a lot possiblities to build the ignition which fits the individual needs perfectly. It runs with conventional sensors as well as with hall sensors. And it is very affordable - but you have to adapt it to your bike and needs. The TCIP4 can easily compensate the "loss" of advance timing at high rpm when using classic pickups. I'm a little sceptical if one is dependent on the geometrical accuracy a PCP - as long as you can move the two sensors individually one may be able to tune the accuracy of the ignition - if not you may find disturbing discrepancy in the ignition timing of the two cylinders (happend to my when installing an ignition with both sensors on one PCP in Guzzi motors). Also the use of a simple Hall sensor may be improved by using a pretensioned Hall sensor which makes you independend on the positioning of the tiny magnets in the ignition rotor. One can use instead a ferromagnetic rotor (e.g. made out of sheet metal) which is easier (and maybe also more precisly) to manufacture. The use of a segmented disk in combination with only one pretensioned Hall sensor may be an interessting solution for Sauro's engine cover. Wolf |
Author: | guyem [ Sat Nov 12, 2016 2:50 pm ] |
Post subject: | Re: Works left engine cover |
Hello everyone, Iam the maker of these ignitions http://allumage-electronique.blogspot.fr/ I have been making them for over 20 years All engines shown in the blog are equiped with the same ignition , only rotors are not the same ( depends on the maximum revs and primary coil ) Fixed advance point , totally accurate and very powerfull sparks ( depends of coil of course ,,, ) Look at Guy Coulon engines : 6cyl 300cc and V4 1000cc ( video on the blog for the 6cyl ) Brancquart competition 1000 CBX ( video youtube ) and many others ,,, before to fit my ignition they try others systems and they own benches ,,,, Tech3 is Guy Coulon https://www.youtube.com/watch?v=i6fuAyrG3CM https://www.youtube.com/watch?v=JJ1-_F9PvXE The first thing to consider is the turbulent mode combustion and front of flame speed sorry for my english |
Author: | Dick le Dog [ Wed Nov 16, 2016 4:43 am ] |
Post subject: | Re: Works left engine cover |
Attachment: Hola amigos, I have had this ignition on my Harris for a while now, and what I like apart from its efficiency and reliability is that it is not only small and light, but consumes very little power. My ignition is produced by the pickup , the little 'box' , one double-outlet Dynatek coil, a pair of Dynatek leads and a pair of Denso Iridium plugs fed by a 4 A/h battery. Weight saving is enormous ; no heavy flywheel to spin up Merci Emmanuel . |
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