TRX250r.org

Author Topic: New LED HPI ignition  (Read 1356 times)

Offline hickwheeler

Re: New LED HPI ignition
« Reply #15 on: March 11, 2019, 02:59:12 PM »
If anyone needs help if you decide to try this. I'll help you anyway I can
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline Hawaiiysr

Re: New LED HPI ignition
« Reply #16 on: March 11, 2019, 03:04:55 PM »
i think have 2 pvl sitting in a box somewhere. i want to give those guys a try. next time i visit Arlan maybe ill pick up a HPI from him. id like to see the difference in them all. i currently run a CR.

Offline hickwheeler

Re: New LED HPI ignition
« Reply #17 on: March 11, 2019, 03:14:41 PM »
I run cr. But will be interesting to see how this does.
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline Hawaiiysr

Re: New LED HPI ignition
« Reply #18 on: March 11, 2019, 03:22:35 PM »
https://www.youtube.com/watch?v=EZOLb6iR3n8
i think the guy did something wrong
« Last Edit: March 11, 2019, 03:25:39 PM by Hawaiiysr »

Offline hickwheeler

Re: New LED HPI ignition
« Reply #19 on: March 11, 2019, 03:27:30 PM »
Ya I watched that also. We did not have any issues with it. It fired up the big pilot cylinder no problem. I think there was something wrong with his setup or got a bad part
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline Tbone07

Re: New LED HPI ignition
« Reply #20 on: March 11, 2019, 03:52:06 PM »
I hope this works well. Ignition is one of the few things left for the 250r that we need a solution for.

Keep us updated if you will please.
LED Performance 350 Sphynx - XC Machine
Laeger's-Roll-GThunder-HLS-PEP-HiPer-GBC

RIP Laz

Offline hickwheeler

Re: New LED HPI ignition
« Reply #21 on: March 11, 2019, 03:53:45 PM »
That's the plan. See how well it holds up
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline Sand_Blaster

Re: New LED HPI ignition
« Reply #22 on: September 17, 2019, 03:13:04 PM »
Does your hpi have major kickback? Mine has terrible kickback if it's not at top dead center
87 Trx250r & 99 Banshee

Offline hickwheeler

Re: New LED HPI ignition
« Reply #23 on: September 18, 2019, 06:13:28 AM »
I retarded my friends a little bit. So it wouldn't kick back so bad. You have to kick from tdc and don't half ass kick it.
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline Sand_Blaster

Re: New LED HPI ignition
« Reply #24 on: September 18, 2019, 10:35:07 AM »
Ok. The guy who did mine added a fly wheel weight to mine to help combat it he said. It was terrible to try an start. Going to take some practice to get used to.
87 Trx250r & 99 Banshee

Offline Jerry Hall

Re: New LED HPI ignition
« Reply #25 on: September 18, 2019, 09:37:59 PM »
If the kick starter is trying to blow off your foot when kick starting, something is drastically wrong.  When this happens it is an indication that the ignition timing in the starting RPM range and or the moment of inertia of the crankshaft assembly is too small. 

I have not used or tried to tune an engine with a HPI ignition.  If it has a very small rotor, that could be part or all of the problem.  If it has a rotor that has the same moment of inertia or higher than the OEM flywheel, the timing is at least 5 degrees too advanced in the starting RPM range.

If the HPI ignition is a programmable ignition I would retard the timing 5 deg in the 200 to 800 RPM range, leave the rest of the curve alone and see what happens.  If the HPI has a universal timing curve similar to the basic very small rotor ignitions and other non programmable ignitions boxes, and the timing is adjusted by rotating the stator plate, rotor or reluctor plate, you may have a real dilemma.  The choice is retarding the whole ignition curve so that the timing is correct at starting RPMs or correct at one RPM at the RPM of your choice. 

My experience has not been good with ignitions timing curves that were not engineered for a particular engine package. 
« Last Edit: September 19, 2019, 05:33:54 PM by Jerry Hall »