Author Topic: HPI ignition install  (Read 15215 times)

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Offline m in sc

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Re: HPI ignition install
« Reply #90 on: August 03, 2020, 02:01:23 PM »
you running a battery?

IF i were to run a battery on mine with the hpi, id consider this. (but would require un-grounding the other end of the lighting coil)

https://www.trailtech.net/en-us/shop/accessories/motorcycle-parts/electrical/electrical-components/dc-regulator-rectifier-150-watt-full-wave-w-relay/


looks like an interesting unit. im running the AC regulator and love it.

other people have run this unit.

https://www.ebay.com/itm/4-Wire-Full-Wave-Silver-Motorcycle-Regulator-Rectifier-12V-DC-Bike-Quad-Scooter/292689887133


however, quite a bit has been discussed in the 'team scream' section on this forum under 'HPI install'.
« Last Edit: August 03, 2020, 02:20:20 PM by m in sc »

Offline quocle603

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Re: HPI ignition install
« Reply #91 on: August 16, 2020, 09:10:37 AM »
Thanks for everyone posting in this thread! Helped me a lot, if you struggle with this installation then just re-read this and the Supertune thread.
Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline rd350mississauga

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Re: HPI ignition install
« Reply #92 on: August 26, 2020, 06:19:41 PM »
Im trying to get the motorcycle running with battery. I bought the ATV 4 wire R/R from ebay.

I now have only 1 lead to the R/R, which is the HPI yellow "light out". How can i unground the coil, so I have 2 leads to the R/R. Also, how does this ungrounding affect the ignition voltage?

Offline m in sc

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Re: HPI ignition install
« Reply #93 on: August 27, 2020, 12:36:16 AM »
ungrounding the lighting coil has zero affect on ignition. :twocents:

 you need to find the lighting coil ground, its a ring terminal held on with i think an m4 or m5 to the stator plate (so you have to remove it). then solder on a wire to the newly ungrounded wire, snake up up the harness to the rectifier and viola. there you go. look up 'floating the ground' on google, pretty common on ac bikes.

Offline quocle603

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Re: HPI ignition install
« Reply #94 on: August 27, 2020, 07:26:36 AM »
ungrounding the lighting coil has zero affect on ignition. :twocents:

 you need to find the lighting coil ground, its a ring terminal held on with i think an m4 or m5 to the stator plate (so you have to remove it). then solder on a wire to the newly ungrounded wire, snake up up the harness to the rectifier and viola. there you go. look up 'floating the ground' on google, pretty common on ac bikes.

Yep, look at my post on the other thread. Its the allen (m4) that you take off. Make sure you tape off the silver wire cause it can be grounded. Remove the black pin from the CDI unit (3 wire connector) and you can wire that to your pink or yellow! BANG you have 12v DC from your RED on that ATV R/R.


.

« Last Edit: August 29, 2020, 08:23:23 AM by quocle603 »
Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline rd350mississauga

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Re: HPI ignition install
« Reply #95 on: August 28, 2020, 05:45:30 PM »
Installed the Rectifier+Regulator today.

I took a line from the black wire, close to the plastic connector near the CDI unit, to feed the R/R. I didn't run a seperate snake line from the stator.

Removed the m4 allen as advised and taped it up; to un-ground.

Got a steady output of 13.6V / 5A at idle. Finally found the engine kill switch wire and connected it to the cdi (picture attached, the red+black wire). Thank you M in SC, quocle603 and my brother for the valuable tips.
« Last Edit: August 29, 2020, 03:38:51 PM by rd350mississauga »

Offline Czakky

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Re: HPI ignition install
« Reply #96 on: August 28, 2020, 05:55:10 PM »
 :clap:

Offline m in sc

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Re: HPI ignition install
« Reply #97 on: August 28, 2020, 06:13:16 PM »
 :metal: :metal: :metal: nice job.  :cheerleader:

Offline quocle603

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Re: HPI ignition install
« Reply #98 on: August 29, 2020, 08:15:03 AM »
Glad to help!! Now start blasting away!
Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline rd350mississauga

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Re: HPI ignition install
« Reply #99 on: March 24, 2021, 09:07:14 AM »
Can i use a non-resistor type spark plug with a HPI CDI unit?
Some says it will burn the CDI.
Some say it will only cause electrical interference with the CDI box and can be fixed by moving the CDI box away from the plugs.

I feel atleast 20% reduction in power with the NGK BR8HS resistor type spark plug.

Offline m in sc

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Re: HPI ignition install
« Reply #100 on: March 24, 2021, 10:19:09 AM »
20% reduction on power? no way I don't buy that for a second. If you are down 20% you have other tuning issues.
Its indetectible if anything, at best. try non resistor, if you -think- they work better and don't break up the signal, have at it. no permanent damage either way. 




Offline rd350mississauga

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Re: HPI ignition install
« Reply #101 on: April 28, 2021, 05:48:29 PM »
Does the coil end need to be grounded? (the thick metal square that looks like a battery terminal)

Offline m in sc

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Re: HPI ignition install
« Reply #102 on: April 29, 2021, 01:46:20 PM »
i dont think so. its just a mechanical mount.