Whizzo944's Honda VFR400R NC30

[whizzo944]

Hello All,
I was going to post some photos of my Honda VFR400R NC30, but the forum thinks my jpeg files are invalid
Anyway, hopefully I will be fitting a Jaguar 0.7 FreeEMS board to the bike soon. I was concerned about something I read
here about the missing tooth decoder being unable to handle high engine speeds, this bike revs to 15,000 rpm
The engine is a 90 deg. V4 400cc and it has a 36 - 1 toothed wheel on the crank. Missing tooth is at 70 deg BTDC
of the rear cylinders

The original crank had a 8 - 1 toothed wheel and 2 VR sensors at about 70 deg. to each other, feeding into Mr. Honda's own
ignitor box. I am using one of the OEM VR sensors, the other is removed.
The engine fires 0 - 90 - 360 - 450 , rear cylinders first, and uses 2 ignition coils wasted spark mode
There are 4 injectors, one in each throttle body. I'm not sure if it will need secondary injectors above the velocity stacks,
because there is so little time for fuelling at max. engine speed. A lot of the newer Honda's have secondary injectors.
Cold starting and running is by human intervention , but I think it will idle ok after even a short warm-up because of the ITB's.
Anyway, it's always good to warm your engine up, isn't it ? The neighbours mightn't be too happy about that though, especially
with the race pipe

Regards,
Dave.

[Fred]

Hello Fred,
What is the current state of play with regard to engine support? I notice that the last post in this subject
was over 2 years ago.

Regards,

Dave.

Unchanged, sorry. The person who was supposed to make this happen has totally dropped the ball leaving me to fill in the gaps. Do you have a build thread? If so I'll move your post and this reply there to discuss further.

[whizzo944]

I don't have any hardware yet, I have just ordered a Jaguar 0.7 from DeuceEFI but haven't got it yet.
I assume that you need an engine spec. in this build thread ?
Where is the correct place to put it?

[Fred]

I don't have any hardware yet, I have just ordered a Jaguar 0.7 from DeuceEFI but haven't got it yet.
I assume that you need an engine spec. in this build thread ?
Where is the correct place to put it?

Here! :-D Edit the first post (including title) to your liking, pics, description, etc :-) Have a read here and here, too:

viewtopic.php?f=55&t=2436
viewtopic.php?f=3&t=2378

[whizzo944]

Hello All,
Am I going to have problems using a 36 - 1 toothed wheel at 15,000 rpm ?

TIA,

Dave.

[Fred]

No, two engines have run with my latest fixes. I want to verify it on the bench before publishing it, but it should be fine to 15k or above, now.

[whizzo944]

Hello Fred,
Are you allowed to tell us what the engines were and how fast they rev ?

TIA,

Dave.

[Fred]

Sure, but neither of them proved the RPM capability, only that it works and isn't broken. One was ToxicGumbo's 4 cylinder truck tested to maybe 3k with 36-2, and the other was em_knaps' 1UZ-FE V8, tested to 7500 with 12-1. IE, both tests would have passed with the old firmware. Hence bench testing is required to verify the efficiency of the code before publishing it.

[whizzo944]

Hello,
So, I have firmware version

FreeEMS-0.2.0-SNAPSHOT-274-gb247e56-MissingTeeth-Crank-36minus1

Is this the latest general release firmware ?

I'm just waiting for my Jaguar board to arrive and then I can test it on the bench. I have a small electric motor
with a 36-1 wheel on it and a real VR sensor that I can run to 20,000 rpm , so if it works OK with that, then I'm
pretty sure it will be OK on the real engine.

TIA,

Dave.

[Fred]

You'll need a suitable configuration loaded/it to be preconfigured, too. I highly recommend bench testing like that to prove it to yourself for peace of mind, good on you! :-) Once your board arrives and you complete it enough to test with, hit me up for a suitable firmware setup exactly as you intend to use on your bike.