Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

Yeah yeah, i know what youre thinking...."another noob needs help with his HPI...UGH"

Im at an impass. I have read every thread i could find on the hpi, and i have read the manuals online as well. This is where the problem seems to start though.

I have an HPI2TEN i boughg for my puch with an E50 (bought from Mr. DUNCAN) according to the stator plate. There are 3 manuals on HPI's website, for what i assume are 3 different types of 210 series cdi. I can't determine which timing method to follow.

2 of the manuals call for using a mark on the cable clamp on the stator plate, and 1 calls for using a line to either side of the cable clamp.

I have had friends tell.me.to use the left line for a clockwise rotating flywheel (bring piston to TDC, back off 2mm BTDC, and install flywheel with notch aligned with line), but the only manual for 210 that tells you to use the lines, says that the right line needs to be used for clockwise flywheel, not the left.

Unfortunately, my timing light crapped out on me recently, i have a new one coming soon.

In the meantime, i was hoping the people experienced with HPI ignitions can educate me on the methods for timing properly, in the way a wiki entry would show? (Setting initial timing, adjusting the timing you have, general setup and procedure etc.) (Why is there no wiki entry on HPI's?)

I'd reaply appreciate any help and guidance you can give me.

Thanks in advance! (Pun intended) (edited)

Re: Need some help with this stubborn HPI....

Ѭ ɞŦЯʚOluv Ѫѫ /

Re: Need some help with this stubborn HPI....

Before you fuck with lining up the marks you need to throw the rotor on (doesn't matter how it's timed just tighten it on), remove the plug and rest it on the head and spin the crank with a drill and use your timing light. Half the time it fires way off from the line on the stator, so you will end up lining it up with a line YOU make on the stator, feel me?

Re: Need some help with this stubborn HPI....

This pull start install guide talks about setting up a HPI. It might help you get a better grasp of what your set is doing.

HPI

Re: Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

> Ryan N. Wrote:

> -------------------------------------------------------

> Before you fuck with lining up the marks you need to throw the rotor on

> (doesn't matter how it's timed just tighten it on), remove the plug and

> rest it on the head and spin the crank with a drill and use your timing

> light. Half the time it fires way off from the line on the stator, so

> you will end up lining it up with a line YOU make on the stator, feel

> me?

Hmmm......so i just pay attention to where it fires, mark a line, and set my timing relative to that? (set TDC, push piston BTDC by 2mm, then install flywheel ON that mark?)

Re: Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

> cheetahchrome . Wrote:

> -------------------------------------------------------

> This pull start install guide talks about setting up a HPI. It might

> help you get a better grasp of what your set is doing.

>

> HPI

Definitely some helpful info in there, specifically regarding the flywheel direction and the slotted holes! Thanks dude.

Re: Need some help with this stubborn HPI....

The setup will have two marks for direction of rotation. Anything that shows one mark for both will be wrong. You could time the engine using any position you want if you make your own reference mark, but why?

Re: Need some help with this stubborn HPI....

HPIs are absolute trash quality. The dude that sells HPIs is just buying the components on alibaba and machining tapers in the rotors and modeling adapter plates. Because he's piecing them together from components that weren't made as a set they often don't fire on the mark they're supposed to. It's to the point where I don't even bother with the timing marks on them. Always check for the firing position with a timing light.

I would never buy another one. PVL, MVT, and Selettra are the only performance CDIs I will spend money on. (edited)

Re: Need some help with this stubborn HPI....

That sucks. I've had nothing but good luck on my Tomos and Morini HPI minis -- the Morini one actually fired on the mark! Lol. Too bad those others don't make the ignitions for Minarelli or Morini.

> Dave & Bummerzz Wrote:

> -------------------------------------------------------

> HPIs are absolute trash quality. The dude that sells HPIs is just buying

> the components on alibaba and machining tapers in the rotors and

> modeling adapter plates. Because he's piecing them together from

> components that weren't made as a set they often don't fire on the mark

> they're supposed to. It's to the point where I don't even bother with

> the timing marks on them. Always check for the firing position with a

> timing light.

>

> I would never buy another one. PVL, MVT, and Selettra are the only

> performance CDIs I will spend money on.

Re: Need some help with this stubborn HPI....

> Dave & Bummerzz Wrote:

> -------------------------------------------------------

> HPIs are absolute trash quality.

yeah i dunno if i would say that just because timing marks don't line up. the mfg quality on them is pretty good for what they are (materials, machinining, finishing, coils winding) and for as many people running them in the US moped scene, they seem to have good reliability.

any 1-wire cdi is going to be a little finnickey due to coil gap and magnet intensity.

MVT and selettra also have their problems, i've seen both of them go bad in moped and dirtbike stuff. PVL is pretty much the only one that i think is worth $300+ price tag.

Re: Need some help with this stubborn HPI....

> Graham Motzing Wrote:

> -------------------------------------------------------

> > Dave & Bummerzz Wrote:

>

> > -------------------------------------------------------

>

> > HPIs are absolute trash quality.

>

> yeah i dunno if i would say that just because timing marks don't line

> up. the mfg quality on them is pretty good for what they are

> (materials, machinining, finishing, coils winding) and for as many

> people running them in the US moped scene, they seem to have good

> reliability.

Going to disagree with this because the timing and firing marks aren't the only problem. the coating on the coil wires melts if you have an ignition cover on. seen it happen numerous times on mopeds and dirt bikes (even on the "new" batches that are allegedly fixed). The quality the stators is really bad, there's nothing keeping the wires on the coils except solder. I also wouldn't say they have a good rate of reliability given the whats available for the price point. Everyone on this site knows multiple people who've burned up hpi coils or had a box fail.

> MVT and selettra also have their problems, i've seen both of them go bad

> in moped and dirtbike stuff. PVL is pretty much the only one that i

> think is worth $300+ price tag.

meh, Takegawa puts their name on selettra ignitions which says a lot to me about the quality.

https://japan.webike.net/products/1503346.html

As you might be able to tell, I'm pretty passionate in my hatred for HPIs. I probably wouldn't be if they weren't 200-something dollars, people didn't talk about them like they're sacrosanct. (edited)

Re: Need some help with this stubborn HPI....

Brandon, post your progress. I'm about in same place as you are. It would be nice to compare notes.

Re: Need some help with this stubborn HPI....

~ Classic Don Trumpter /
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Re: Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

> Dmitry K. Wrote:

> -------------------------------------------------------

> Brandon, post your progress. I'm about in same place as you are. It

> would be nice to compare notes.

I will! I am currently waiting for my timing light to show up. The one i had stopped working. Should be here in a day or so

Re: Need some help with this stubborn HPI....

yep wait for the timing light before you even try. IMO they're decent and if you order directly from HPI they're a tad cheaper. I've had to rewind a light coil before, had one of the CDI boxes burn out and almost burn a hole in my piston and i've had the glue melt off sooooooo yeah, not the best but nowhere NEAR the terrible quality of the treats cdi's.

Re: Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

> Ryan N. Wrote:

> -------------------------------------------------------

> yep wait for the timing light before you even try. IMO they're decent

> and if you order directly from HPI they're a tad cheaper. I've had to

> rewind a light coil before, had one of the CDI boxes burn out and almost

> burn a hole in my piston and i've had the glue melt off sooooooo yeah,

> not the best but nowhere NEAR the terrible quality of the treats cdi's.

Have you run a flywheel.cover with an Hpi before? Im a little concerned about cooking the thing, but i want a sleeper look.....

Maybe I'll just cut some slots in the cover for air circulation?

Re: Need some help with this stubborn HPI....

i've personally never ran a flywheel cover with a HPI but I have used them on a variety of bikes: derbi piston port, derbi flat reed, derbi 4V, morini m1, morini m101, minarelli v1, and puch e50. I've seen many people start to cut cooling holes in the forward direction of their covers --- do I know if they work? not sure, but I can guess they do provide an ample amount of cooling while riding.

ok, back to mardi gras.

Re: Need some help with this stubborn HPI....

I've run covers over an HPI an E50 (clear plastic cover), A55 (drilled out some holes in the cover) and a M101KS. No issues.

Re: Need some help with this stubborn HPI....

Brandon Weiss (Detective brandon to you) /

Thats great! Thanks guys.

Re: Need some help with this stubborn HPI....

Rig up something like this

https://www.puchshop.de/psr-flywheel-cover-vented-polyester.html?search=cover

And place a couple washers on the mounting screws between the case and the flywheel cover for extra side venting around the entire perimeter.

Re: Need some help with this stubborn HPI....

> Dave & Bummerzz Wrote:

> -------------------------------------------------------

> Going to disagree with this...

good to know, i guess i haven't heard of it that often, but who knows. i don't buy fancy pants ignitions period i use oem junk and graft on scooter parts because i'm a cheapass and i like big heavy flywheels and am radio and going 50 in the fast lane with my left turn signal on, what with bein' a old man and all.

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