Write-up: Installing a Bowman ring in a DLE-20 - Page 3 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-20-2013, 07:49 AM   #21
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Re: Write-up: Installing a Bowman ring in a DLE-20

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I went a step farther...I was mostly pokin' some fun at a couple 3W guys talking about their red heads...

(port matched and a radius put on the muffler flange too)
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Old 03-17-2013, 08:42 AM   #22
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Re: Write-up: Installing a Bowman ring in a DLE-20

I asked Frank a few questions too and the answers are;

"I custom make rings a lot different from the way manufacture’s mass produce rings, 1 at a time. Tighter gap .001 to .002 & round to begin with. Manufacturer’s ring’s wide gap means compression loss and not round, more compression loss. I put less tension in my rings which means lower operating temperatures, more compression lower idle better mid-range higher peak RPM.

If You don't replace your ring, it just won't perform as well.
If you do, better performance.

If you are having starting problems besides ring could be open reed, common on China engines."

So there you have it.
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