Bimota Forum Forum Index Bimota Forum
Forum for Bimota Owners and Riders
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  

DB2SR - winter project turns into lockdown project
Goto page Previous  1, 2, 3, 4, 5
 
Post new topic   Reply to topic    Bimota Forum Forum Index -> DB Series
View previous topic :: View next topic  
Author Message
hindsight



Joined: 13 Feb 2010
Posts: 85
Location: Central Scotland

PostPosted: Thu Oct 15, 2020 6:19 pm    Post subject: Reply with quote

Hi Ralph - long overdue for an update, I think.. but an update with mixed results..

So, in the last update, I had got the v3 board up and running, and it was quite happily running the engine, so I started tuning the cold-start fuelling.

Along the way, I started to notice that it wasn't running just quite as well as the previous board, and digging into it a bit more, it became clear that the new board was losing sync with engine TDC regularly (the microcontroller needs to keep track of where TDC is on each engine revolution in order to calculate when to squirt or to fire).

The previous board had no problem with keeping in sync. Since then, I've spent a fair amount of time trying to understand where the problem lies. It's almost certainly an issue with electrical noise interfering with the crank sensor signal, and it has to be either a physical problem with the v3 board, or a circuit design issue, but annoyingly, it's not something I've managed to nail quite yet.

In other news though, somewhere along the line, the original ECU developed a fault. I sent it off to Italy to TDD (the original manufacturers), and not only have they repaired it, but they've found a 944cc chip for it.

Additionally, they're having a rummage around to see if they have the original software for connecting and tuning it.

So - the onward development of the new ECU is a touch frustrating, but I'll keep at it from time to time to try and understand what is going on with it, but I still have options with both the v2 ECU board and also the OEM unit.

Mike
Back to top
View user's profile Send private message
2bims



Joined: 03 Apr 2010
Posts: 6973

PostPosted: Fri Oct 16, 2020 9:37 am    Post subject: Reply with quote

Sounds like sterling service from an italian supplier/manufacturer.....I either get great service....or absolute zero replies......theres never a half way house with Italian companies.....glad you got the former repsonse
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Bimota Forum Forum Index -> DB Series All times are GMT + 1 Hour
Goto page Previous  1, 2, 3, 4, 5
Page 5 of 5

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group

The Bimota Forum has no official connection to Bimota S.p.A.. We just ride or are interested in their motorcycles and support the brand. All trademarks are acknowledged