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GMS32 with pipe

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Old 08-08-2005, 12:52 AM
  #1
XJet
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Default GMS32 with pipe

I've been tuning the header/pipe on my GMS32 and here's what I've got so far:

MAS 9x6 with standard muffler: 13,800 RPMs
MAS 9x6 with pipe: 15,500 RPMs

The header is still a little long but I think I'm getting close but can someone tell me how these figures compare to other 32-sized motors?
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Old 09-16-2005, 06:31 PM
  #2
the-jessman
 
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Default RE: GMS32 with pipe

What pipe/header are you using and where did you get it?

Thanks
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Old 07-04-2006, 09:46 PM
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Default RE: GMS32 with pipe

I just ran my OS32F for the first time. Bought it used. lso looking for comparison info.
3200' ASL
90 degrees F
APC 9x6
10%

14200 rpm, will richen a touch if needed according to the nose up test. Will go into a still in progress Sig Kobra.

MikeB
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Old 05-09-2007, 07:46 PM
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Oodles
 
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Default RE: GMS32 with pipe

Got 2 of them on moosecan mufflers from Ky--Running a 8x6 on 15%--One turns 17500 and the other turns 18k--They get the job done
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Old 10-18-2009, 02:11 PM
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Strykaas
 
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Default RE: GMS32 with pipe

Hi Bruce.
So far, what has been your experience with this engine ?
Thanks
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Old 10-23-2009, 11:39 AM
  #6
asmund
 
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Default RE: GMS32 with pipe

My ASP XLS .36 turns JXF 8x8 at 19000 rpm when fitted with a .21 purple pipe from Justengines
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Old 10-23-2009, 01:45 PM
  #7
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Default RE: GMS32 with pipe

jxf ? what is that ?
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Old 02-01-2010, 04:24 PM
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lfinney
 
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Default RE: GMS32 with pipe

AKA ho chi minh model prop looks just like apc or master airscrew very cheap plice
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Old 02-22-2010, 10:53 AM
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Default RE: GMS32 with pipe

[sm=lol.gif][sm=lol.gif] Close, but no cigar

Here it is: http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9880&Product_Name=JXF_8x8_/_203_x_203mm_Poly_Composite_propeller_(2pcs/bag)
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Old 02-23-2010, 07:25 PM
  #10
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Default RE: GMS32 with pipe

GMS .32 with carb fixed - APC 8x6, 15% fuel, rich 2C: 18,300 with MAC open pipe. (Tuning setup for 8-7 flight prop). Pipe/header length not tweaked from initial setup, may be more there.

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Old 06-15-2010, 04:43 PM
  #11
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Default RE: GMS32 with pipe

I have a GMS 32 with about a gallon of fuel thru it. I recently got a Kentucky mousse can muffler for it. Have it on a TufFlight Predator weighing 2.75#. The stock muffler weighs 2.7 oz and the mousse can/header only weighs 1.9 oz

80 F
95% humidity
1000 ft alt
All tests within 20 minutes of each other

Fuel:
12.5% Nitro
21% oil 50/50 synth/castor

TNC tach
Radio Shack sound meter A-weight slow
Prop Power Calc

Stock Muffler:
APC 9x5: 15,300 peak rpm, 92.5 dB, 72.5 mph, 5.12# free air static thrust, 0.75 HP
APC 9x6: 14,100, 91.5 dB, 80.0 mph, 4.87#, 0.70 HP

Mousse Can:
APC 9x5: 17,500, 95.0 dB, 82.8 mph, 6.70#, 1.12 HP
APC 9x6: 15,600, 92.0 dB, 88.6 mph, 5.96#, 0.94 HP

The mousse can rocks!!!

Here's a couple pics of my engine:


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