Sport 20 Build PTH Stealth 21

[TomGracey]

I wasn't going to start this till later on in the year but with every thing on Hold. I needed something to do, to stave off cabin fever.

Sport 20 Hydro build
Phil Thomas Stealth 21 CMB Beta 21
All waterproof electronics
All the mock up is done time to break it down for body & fender work

 

[P THOMAS]

Looking good, you trusting that receiver to stay working out in the open?
I suggest you install some latches for the cowl now before paint, easy to see the latch position thru the glass cowl.
Zippkitts small cowl latch are a good one to use.

 

[TomGracey]

Yep the RX has been Waterproofed with Silicon Conformal Fluid done lots of them with this stuff its how all the Electronics Co waterproof there Electronics. I submerged it @ 2ft for 20 min with no issues
good eye Phil working on the latches as I type

De-case the RX board apply 2-3 coats ( allow to dry between coats) to totally encapsulate the PC board with the Conformal fluid (do not apply to the plug pins) reassemble and use some silicone grease on the servo plug pins to stop corrosion No worries

 

[Bill Gibson]

That is a nice looking boat! Always liked them.....one of these days!

 

[TomGracey]

Spent a little time out in the machine shop to manufactured a couple of mufflers just in case the long stinger will not pass the NAMBA 95db noise test. These mufflers 1 will have no packing just the baffle the other the baffle is packed with stainless steel wool and which ever one pass's the noise test and is the least restrictive will be the lucky candidate

 

[Samuel Hagan JR]

I rarely see any mufflers on a Sport 20 in IMPBA.

 

[P THOMAS]

That will make it less noisy those extension pipes do make the noise louder even on a 21

 

[Lee Whiteley]

Hello Tom,

Would you mind sharing the dimensions of your muffler? Looks like a great project to take a shot at.

How do you determine the size of the muffler? Is the muffler your making usable on other sizes of engines Tom?

Thanks for any information you'd like to share. I've been looking for a project to use my dividing head.

If this information is something you don't care to share that's fine. I do understand as it takes a lot of work to develop something like this. You sure do build a fine boat btw. I'm going to make up some pushrods like your's hopefully today. Will be a learning experience as I've never made up a tapered piece before.

Regards,

Lee

 

[GraysonTaylor]

Spent a little time out in the machine shop to manufactured a couple of mufflers just in case the long stinger will not pass the NAMBA 95db noise test. These mufflers 1 will have no packing just the baffle the other the baffle is packed with stainless steel wool and which ever one pass's the noise test and is the least restrictive will be the lucky candidate
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Nice! Reminds me of the Prather mufflers.

 

[TomGracey]

Hello Tom,

Would you mind sharing the dimensions of your muffler? Looks like a great project to take a shot at.

How do you determine the size of the muffler? Is the muffler your making usable on other sizes of engines Tom?

Thanks for any information you'd like to share. I've been looking for a project to use my dividing head.

If this information is something you don't care to share that's fine. I do understand as it takes a lot of work to develop something like this. You sure do build a fine boat btw. I'm going to make up some pushrods like your's hopefully today. Will be a learning experience as I've never made up a tapered piece before.

Regards,

Lee

A friend of mine gave me the idea for the CF steering shaft here is a link to his vido on how to fab. them

 

[henkie]

Spent a little time out in the machine shop to manufactured a couple of mufflers just in case the long stinger will not pass the NAMBA 95db noise test. These mufflers 1 will have no packing just the baffle the other the baffle is packed with stainless steel wool and which ever one pass's the noise test and is the least restrictive will be the lucky candidate
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You guys are lucky . We need to stay on 80 DB.

 

[RickTomsett]

very nice