Author Topic: New motor project SH .37 (Read 3179 times)

Brian Gardner · « **on:** November 18, 2020, 06:26:16 PM »

G'day All,

EDIT _ I have enough people interested so I will be proceeding with this.

I'm considering doing a new motor project. I'd be buying a number of SH .37 motors and putting my stunt timed piston/liner sets in and adding a venturi/NVA. I'll also hopefully have a lightweight muffler. And possibly a lighter head.

The sale price upon completion would be approximately $240 Aussie dollars ( $175US ).

In an ideal situation I'd buy incomplete motors to keep the price down but the factory doesn't want to supply this - so I have to buy complete motors.

I have done a dimensional check and these have the same bolt pattern as the Thundertiger Pro 36.

Would people be interested in buying these?

Brian Gardner · « **Reply #1 on:** November 18, 2020, 06:57:15 PM »

I would include the original ABC set and carby in the box - no point in me keeping them.

They don't appear to make anything bigger.

Quote from: Motorman on November 18, 2020, 06:43:30 PM

Looks like it's already ABC? Would we get the OEM P/L too? Do they make anything bigger?

Motorman

Steve Lotz · « **Reply #2 on:** November 19, 2020, 02:13:45 AM »

What do those things weigh?

Peter Grabenstein · « **Reply #3 on:** November 19, 2020, 02:36:13 AM »

Weight w/Muffler: 332g

https://www.mikegoesflying.com/shop/airplane-engines/sh-37-aircraft-engine/

Al Ferraro · « **Reply #4 on:** November 19, 2020, 07:28:04 AM »

Muffler weights 4 oz
https://www.mikegoesflying.com/shop/sh-engine-parts/32-sh-engine-parts/silencer-standard-muffler-32-37-gf6-bin-sh104/

Brian Gardner · « **Reply #5 on:** November 20, 2020, 01:02:20 AM »

A lot of people have messaged me to ask if these will be "like" Randy's AeroTigers - the answer is yes - similar concept.

There will hopefully be an option for a lightweight muffler too.

This will only happen if you guys want them.

Brian

Peter Grabenstein · « **Reply #6 on:** November 20, 2020, 08:17:29 AM »

https://www.shengines.com/product-FS37S01R1--37%E7%B4%9A%E5%81%B4%E6%8E%92%E9%A3%9B%E6%A9%9F%E5%BC%95%E6%93%8E-FS37S01R1.html

could be my choice with a much lighter custom made , round (not square) head clamp + Tongue muffler ,
but expense of shipp . Taiwan - to - Australia - to - Europe is my obstacle.
Plus fees and taxes , 250 USD + .

Gordon Tarbell · « **Reply #7 on:** November 20, 2020, 08:58:58 AM »

So these SH 37's should weigh about 7.71 oz. with out muffler. and be near equal to Aero tiger 36 in run and power? Lighter mufflers can be made and hopefully the power and characteristics of the Aerotiger would be duplicated. If so I will order one.

Brian Gardner · « **Reply #8 on:** November 20, 2020, 02:59:53 PM »

Yes to all the below.

The head clamp...... If I include a new round one it will just add to the cost without adding to function.

Quote from: gordon tarbell on November 20, 2020, 08:58:58 AM

So these SH 37's should weigh about 7.71 oz. with out muffler. and be near equal to Aero tiger 36 in run and power? Lighter mufflers can be made and hopefully the power and characteristics of the Aerotiger would be duplicated. If so I will order one.

Tom Luciano · « **Reply #9 on:** November 20, 2020, 03:18:12 PM »

Brian, I would be interested in one.

Tom

mike londke · « **Reply #10 on:** November 20, 2020, 03:36:46 PM »

I'll take 2.

EddyR · « **Reply #11 on:** November 20, 2020, 04:13:54 PM »

Advertised as a gasoline engine with no coil needed?
Is this the same motor?
Ed

Alan Buck · « **Reply #12 on:** November 20, 2020, 04:18:13 PM »

I in for one thank you Brian

Brian Gardner · « **Reply #13 on:** November 20, 2020, 04:32:42 PM »

Glow, not gasoline version Ed.

Brian

Quote from: EddyR on November 20, 2020, 04:13:54 PM

Advertised as a gasoline engine with no coil needed?
Is this the same motor?
Ed

Al Ferraro · « **Reply #14 on:** November 20, 2020, 09:11:47 PM »

Hi Brain’,
The SH .37 has the same stroke as the LA .46. If you are making a new piston, liner, head assembly, you might be able to increase the displacement of your custom engine if the stock liner OD is large enough.
Al

Dave Harmon · « **Reply #15 on:** November 20, 2020, 10:14:44 PM »

Will the exhaust still be blocked??

Craig Beswick · « **Reply #16 on:** November 20, 2020, 11:10:06 PM »

Brian,
what sort of time frame are you looking at?

Craig

Peter Grabenstein · « **Reply #17 on:** November 20, 2020, 11:37:51 PM »

Quote from: Dave Harmon on November 20, 2020, 10:14:44 PM

Will the exhaust still be blocked??

If you "Dremel" crankcase exhaust open , you will open an intake transfer port ,right area of ck exhaust frame

.
NOT A GOOD IDEA AT ALL

Peter

Brian Gardner · « **Reply #18 on:** November 21, 2020, 12:08:48 AM »

In the first quarter of next year. Gotta get the engines, make the parts etc.

B

Quote from: Craig Beswick on November 20, 2020, 11:10:06 PM

Brian,
what sort of time frame are you looking at?

Craig

Paul Allen · « **Reply #19 on:** November 21, 2020, 01:28:44 AM »

Hi Brian
I will take one, thanks. Wonder what SH stands for!
Paul

Larry Fruits · « **Reply #20 on:** November 21, 2020, 01:40:10 AM »

Hi Brian,

Sent P.M.

Blessings;
Larry

Peter Grabenstein · « **Reply #21 on:** November 21, 2020, 02:48:39 AM »

Quote from: Paul Allen on November 21, 2020, 01:28:44 AM

Hi Brian
I will take one, thanks. Wonder what SH stands for!
Paul

S.uper H.andling or .... .hit .appens , your choice.

Guy Markham · « **Reply #22 on:** November 21, 2020, 08:16:40 AM »

Any idea of when the LA OS 46 ABC sets will be available ? Thanks, Guy

Brian Gardner · « **Reply #23 on:** November 21, 2020, 03:03:48 PM »

Very soon, probably early in the new year.

Quote from: Guy Markham on November 21, 2020, 08:16:40 AM

Any idea of when the LA OS 46 ABC sets will be available ? Thanks, Guy

Dennis Toth · « **Reply #24 on:** November 22, 2020, 07:31:50 AM »

I'm wondering what is the advantage to the SH .37 motor you propose? It is already an ABC and weight is around 7.7 oz. ish bare bones. With Randy's aero 36 you get an AAC setup that is about 5/8 oz. lighter than the ABC. Why not go to AAC? I know you haven't done this but AAC is the way to go. Worth learning how to do it. Light weight and powerful is the combination we want in stunt.

Best, DennisT

phil c · « **Reply #25 on:** November 22, 2020, 12:02:27 PM »

Hi Brian, put me down for 1. Don't really need it but oddball engines are fun.

Brian Gardner · « **Reply #26 on:** November 23, 2020, 01:06:31 AM »

If I can achieve a decent weight saving with a replacement head clamp, or machining the stock one down I can do this, but all the extra work comes at a cost.

The benefit if it is already ABC.... my liner will be stunt timed.

Brian Gardner · « **Reply #27 on:** November 23, 2020, 08:30:41 AM »

I'm considering a bore increase Al, possibly to .40, will wait till I have the test engine to decide. I don't want to make the liner as thin as the LA46.

Quote from: Al Ferraro on November 20, 2020, 09:11:47 PM

Hi Brain’,
The SH .37 has the same stroke as the LA .46. If you are making a new piston, liner, head assembly, you might be able to increase the displacement of your custom engine if the stock liner OD is large enough.
Al

big ron · « **Reply #28 on:** November 23, 2020, 11:05:13 AM »

Put me down for 2

John Leidle · « **Reply #29 on:** November 23, 2020, 02:51:55 PM »

Hi Brian,
I don't know much about your engine work other than a guy from New York had an old OS35S with your PL in it the thing ran superbly so I asked abut it & was told it was one of yours.
Let me know if you ever deside to do a Veco .61 setup ....ha , ha , ha,
John L.

ALEX ORTIZ · « **Reply #30 on:** November 28, 2020, 02:42:06 PM »

I'm interested in 2 motors.

Thanks

Alex Ortiz

Brian Gardner · « **Reply #31 on:** November 29, 2020, 04:59:15 PM »

Quote from: Motorman on November 29, 2020, 02:00:46 PM

https://www.mecoa.biz/shopexd.asp?id=4985

What's your point? That's just another R/C motor with a venturi fitted.

Or are you suggesting it would be a good engine to do a re-work on?