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Zenoah stock 32 vs Redline Pro Mod 29 https://redlinemotors.us/products/ols/products/zenoah-moified-engine-30cc-znh-mfd-ngn-30c1 Which engine would likely have the most power?

What is a "hot pipe" vs just a tuned pipe?

Are there any onboard remote starters available, that are dependable, or is that "pie in the sky"? Thinking it would be a nice addition to my 5 1/2ft hydroplane.

I have a 48" hydro and a 68" hydro in the works. Looking for the best way to retrieve when they don't make it back to shore. I have an inflatable pontoon to go after them but not sur about lifting them on the pontoon. Any input?

What type of pipe is this header set-up for?

Should the water enter the head from the top, or the bottom? What about the manifold flange, enter from top, or bottom?

Making a little progress on my 68" Atlas Van Lines, Blue Blaster.

I see some unlimited/GP style hydroplanes run with the strut (even with flex shaft drive) thru the bottom of the hull, forward of the transom, and others with the strut hanging off the back of the hull. Which is best, or does it depend on the boat?

Is marine fogging oil a good after-run oil?

I have an older BlackJack 26, that was glow and has been converted to electric. It's running an AquaCraft 36-56-1800, 1800kV motor and a 90a SeaKing esc. Been running it mostly on 3 or 4s. What would be a good prop for this combo? Running n Octura X442 now.

I just recently picked up a used Redline 29cc Pro Mod and need to know if I should run a 7/8 pipe. or 1"? Altitude here is 4500ft, if that makes a difference. https://redlinemotors.us/products/ols/products/zenoah-moified-engine-30cc-znh-mfd-ngn-30c1

Got the SLR Missile ready for testing, as soon as the water starts to warm up, or I get a set of waders.

Recently ran across this motor for sale. Any opinions? This is seller's description: "Motor is a· 35cc Competition extra. Manufactured in 1991 (castings), 1990 electronics, 1990 piston/sleeve. · Short rod for more power less RPM · Operation range is 10000 – 14000 RPM · 6 Hp · Designed for 2...

Am told I need to sharpen the leading edge of my turn fin. Should I sharpen both sides, (like a knife) or just inner edge to the outside, or outer edge to the inside?

What is meant by the phrase "This engine is set up for heat racing"? I have seen it in a couple of modified engine descriptions.

How much real world difference (seat of the pants, not specs, so to speak) is there between the G260, G300, and G320 engines in stock form? I have searched the internet, and cannot find any real comparison.

Doies this turn fin location look OK?

Need help to find correct C/G for this hydroplane? Hopefully I have included enough info in my crude sketch.

Now ready for a 2K clearcoat, then re-rig and test runs.

So, what's the skinny on the RCMK Twin clones, I see on ebay for under $600? Good, OK, or Junk?