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Ignition booster for Points RD350

Started by Pravin, November 01, 2025, 07:51:59 AM

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Pravin

Hi all ,

Anybody has tried using ignition booster/amplifier for increasing spark density ?

Am going to increase the compression of my bike keeping the points ignition which kind of doesn't work well on high compression engine and I don't want to go CDI route .

Something like this ?

https://ebay.us/m/2tTGBw

Please suggest.

Cheers
Pravin

m in sc


Pravin

Quote from: m in sc on November 01, 2025, 08:03:43 AMget a hotter set of coils.

Hey , how can I decide on hotter coil ? Any specific values ? We have 4 ohm primary and 13k secondary coils in India came with bike


m in sc

im not sure w the radjoot ones were rated at.

teazer

Many years ago, we used to use transistor assisted ignitions.  The idea was that the points would be subject to a much lower load to just switch the transistor and the electronics would carry the load. To be honest, I can't say that any change in performance was noticeable.  Maybe try a relay in the coil power line to get full battery voltage to the coils.  That won't help your points last any longer but should potentially provide a stronger spark.

You could also try a set of Chinese DYna clone ignitions.  I am a fan of Dyna and not of companies copying their IP but you are a long way from here and that might be a suitable solution for you.

m in sc


quocle603

Im currently using the Chinese dyna. I had several real dyna burn up due to leaving the ignition on. Works fine and it was a fraction of the cost.
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

teazer

Quote from: quocle603 on November 02, 2025, 08:04:39 AMIm currently using the Chinese dyna. I had several real dyna burn up due to leaving the ignition on. Works fine and it was a fraction of the cost.

Funny you should mention that.  I was setting up a custom DYNA for a GT550 triple and three genuine DYNA modules let the blue smoke escape as I was setting the timing.  Not all at one though.  One dies so it was replaced then a different unit died and was replaced. 

Copycat units, no problems and  what appears to be a fatter spark on the tester.

sav0r (CL MotoTech)

That was a pretty common with Pertronix pickups too. Leaving them on was asking for it. Pertronix fixed that like 15 years ago.
www.chrislivengood.net - for my projects and musings.