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October 21st, 2013, 06:21 AM   #11
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Re: HPI Ignition Module

Hello,

I think I am the closest located to HPI, I am willing to discuss this with them.
Also I will get an answer to your questions about TPS/PJ/shift system/...


But I need some information before I go...

what are the references of the different OEM units of SEM.
And does some-one have the advance curves of these units?

Best regards
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October 21st, 2013, 08:57 AM   #12
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Re: HPI Ignition Module

Hi

I don't have the advance curves, but I've made you a summary of the REF. of all the CDIs

[attachment=0:2fnj1kg9]REF_SEM_CDI.pdf[/attachment:2fnj1kg9]

Here you have, maybe now you can clear the subject.

Thanks

ZAGA
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File Type: pdf REF_SEM_CDI.pdf (17.4 KB, 76 views)
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October 21st, 2013, 09:23 AM   #13
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Re: HPI Ignition Module

I am happy to see that this thread might actually bring something positive to the Husaberg community.

As long as HPI takes a look at this more seriously, we might end up with a decent product indeed.

I'm sure that certain people in the forum have a good idea about the factory advance curves. Heck, anyone with a decent strobe could take note of them and post them on here!
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October 21st, 2013, 11:20 PM   #14
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Re: HPI Ignition Module

I totally agree,

Can someone post the advance curves of the different CDI units?
So I don't have to go to HPI empty handed...

Best regards
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October 23rd, 2013, 06:34 AM   #15
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Re: HPI Ignition Module

Hello,

I have had a chat with the design engineer at HPI about their SEM CDI

They are aware of the differences in advance curve, but this difference is rather small,
400 -> 32
501 -> 32 to 36
550 -> 32 to 36
650 -> 32 to 36
(to be found in the bike manuals)

They put the 32 curve in their standard CDI.
since you can turn the stator, it is not a problem.

But!
the 0 of the ignition does not correspond with the TDC of the bike.
This goes for the SEM and for the HPI CDI (and is done on a lot of bikes)
the difference is about 12

As a result the bike will start with an advance of 12 (as a lot of bikes do)
the remaining advance curve is then 32 - 12 = 20 and this is programmed in the CDI

So it is important to use the original markings on the flywheel.
Don't set other markings as some guys on this forum suggest to do...

Their standard CDI is equipped with this 32 curve and is tested on all the different bores (standard bikes).

the standard CDI is 1 curve - non programmable.

options are:
programmable -> you will need an interface for that (software is for free on their site)
2 curves -> 2 extra wires will come from the CDI, and a handlebar switch is provided
or on request it is possible to have the 2 curve connected to the original handle bar switch (if present)
powerjet -> the electronic hardware they use to build this CDI is used for several other bikes
so this option is available, but not often used, since the bike is not equipped with a power valve
TPS -> see above
Shift-system -> see above

As a remark, they said that a lot of troubles with the SEM ignitions is in the stators.
Often a stator gives good measurements, but when used on the bike, still fails.

for the stators with a resistance of 1K2 -pre 99- they have analogue CDIs CD5004 (4stroke) and CD5005 (2stroke)
for the stators with 3K resistance -after 99- they have the digital CDI unit: CD5006D

hope this was helpfull...
Best regards
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October 23rd, 2013, 08:53 AM   #16
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Re: HPI Ignition Module

Hi

Thank you for your effort to bring some light in to this subject.

I don't know a lot about the subject, so your answer brings me some more questions:

If there are all those options, how can you order the one for your bike ?

You give the values of max advance for each CC, but that is not the advance curve since the usual curves are not linear, as the name says they are curves (except for very old ignitions). Do the curves used in this CDIs are similar to the original ones ?
And what about the FC models ?

And the E-start ones, do they also have the same help for starting ?

About the advance, we usually make a new mark on the flywheel at the real TDC and then we set it, using a strobe light, at 6 advance at normal idle speed. So when we set it it's not at 12 advance, that has shown to be too much. But maybe that is the difference when using the original markings ???

If we go for the extra 2 curves options, how are they, are they softer, harder, what kind of setup those 2 extra have ?

About the TPS, I have one FCR on my 400, so you are saying I could use that option ?

About the stators, don't go there, because that's another story !

Sorry again for all this doubts and thanks for your efforts


ZAGA
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October 23rd, 2013, 07:46 PM   #17
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Re: HPI Ignition Module

I have already mentioned to HPI that advance at kickstart/idle should be around 6 degrees. They didn't seem to care that much.
HusaBE confirmed my suspicion that their advance is too high, at 12deg start/idle.
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October 23rd, 2013, 11:26 PM   #18
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Re: HPI Ignition Module

I will visit them again next week or so,
and I hope I can come up with some more answers.
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October 24th, 2013, 01:06 AM   #19
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Re: HPI Ignition Module

Nice thread.

FYI i have a spare SEM coil/cdi that is for sale.
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October 24th, 2013, 03:28 AM   #20
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Re: HPI Ignition Module

Originally Posted by ElSnorro
Nice thread.
+1, good thread
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