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Comparing SuperTrapp 3S and 5S Spark Arrestor Mufflers

SuperTrapp Spark Arrestor Mufflers

 

SuperTrapp 3S Series
The 3S Series can be used on engines from 2 HP to 50 HP. It is recommended for engines up to 10 HP where low noise is important, but it can be used on engines up to 50 HP where compact size is more critical than noise reduction. It can also be used after a conventional muffler for even quieter operation. USDA Forest Service Approved spark arrestor number T-100.
 
Flow Rating
at 1 psi back pressure
Discs
Required
Diameter Length
without Resonator
Length
with Resonator
Weight
without Resonator
Weight
with Resonator
Resonator
Attenuation
Up to 250 CFM (18 discs) 1 per 3 HP* 3" 3 7/8"
plus 0.08" per Disc
6 1/2"
plus 0.08" per Disc
9 oz
plus 1 oz per Disc
19 oz
plus 1 oz per Disc
3 to 5 dbA
*Using fewer discs will reduce noise but will increase back pressure. Engines rated less than 2400 rpm or using the 3S after a conventional muffler should use 2 discs per 3 HP.
 
3S Installation example:
35 HP Gator-Tail Mud Motor (Briggs & Stratton Vanguard V-Twin) outboard boat application. Maximum muffling desired, small power loss acceptable. Resonator and 8 discs installed.
 
 
SuperTrapp 5S Series
The 5S Series is designed for use on engines from 10 HP to 200 HP. It is recommended for engines up to 100 HP where low noise is important, but it can be used on larger engines when compact size is more critical than muffling. It can also be used after a conventional muffler for even quieter operation. USDA Forest Service Approved spark arrestor number T-101.
 
Flow Rating
at 1 psi back pressure
Discs
Required
Diameter Length
without Resonator
Length
with Resonator
Weight
without Resonator
Weight
with Resonator
Resonator
Attenuation
Up to 1050 CFM (36 discs) 1 per 7 HP* 5" 5 1/4"
plus 0.13" per Disc
9 3/8"
plus 0.13" per Disc
1 lb 6 oz
plus 2.4 oz per Disc
3 lb 4 oz
plus 2.4 oz per Disc
4 to 6 dbA
*Using fewer discs will reduce noise but will increase back pressure. Engines rated less than 2400 rpm or using the 5S after a conventional muffler should use 2 discs per 7 HP.
 
5S Installation example:
120 HP VW-based engine, dune buggy application. Noise reduction less important than power output. 18 discs installed without resonator.
 

SuperTrapp Spark Arrestor Mufflers

Choosing and Using SuperTrapp Car Mufflers

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