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Old 10-09-2008, 05:37 PM   #1 (permalink)
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Vintage Supertrapp Muffler(?) for Minis

I'm told I may be the only one on earth that has one of these.

It looks like a silencer that is put on the end of a bigger muffler and it may very well be that. However, I am told that this is a muffler for a 50cc four stroke.

Whatever it is, it is old, cool, and mine now.....





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Old 10-09-2008, 05:40 PM   #2 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Ill buy it off you for $8 shipped.
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Old 10-09-2008, 06:32 PM   #3 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

looks neat, also looks like some one took the time to make a big welded blob on it too. Can't say i'v ever seen one though, kudos to you. also 8 bucks is a rip off.
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Old 10-09-2008, 08:18 PM   #4 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

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looks neat, also looks like some one took the time to make a big welded blob on it too. Can't say i'v ever seen one though, kudos to you. also 8 bucks is a rip off.
The welded blobs on either side are for a cross member that holds the threaded shaft.

I was warned of the charlatans that would covet this object and offer meager sums while knowing the true value of this artifact. It will only be safe in a museum.
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Old 10-09-2008, 08:31 PM   #5 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Like any good treasure, bury it.
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Old 10-09-2008, 08:33 PM   #6 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Powroll I think still sells the supertrapp exhausts for the CT70's and Z50's. I ran one back in the day before the Japanese parts became available.
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Old 10-09-2008, 08:56 PM   #7 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

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Powroll I think still sells the supertrapp exhausts for the CT70's and Z50's. I ran one back in the day before the Japanese parts became available.
It would be cool if I could find more disk/baffles for it.
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Old 10-09-2008, 11:30 PM   #8 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Got one on my old ice racer (72 XL250 bored and stroked). Great mufflers. You can still get the mufflers in different sizes. I've never seen one that tiny though.



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Old 10-09-2008, 11:40 PM   #9 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Yea I was just looking a Supertrapp's website. The smallest disks the sell now are 3" This one has 2" disks.

So just because there are exposed threads does not mean it's missing some disks? It looks like I can fit more on there.
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Old 10-09-2008, 11:43 PM   #10 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

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Yea I was just looking a Supertrapp's website. The smallest disks the sell now are 3" This one has 2" disks.

So just because there are exposed threads does not mean it's missing some disks? It looks like I can fit more on there.
Yup that's the whole idea...Fewer discs=more back pressure for low end. More discs=less back pressure for top end. There should be a spring on there instead of the nut holding the discs.
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Old 10-09-2008, 11:46 PM   #11 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Ah ha. Too bad I dont have a 50cc to test it with. It is too small for 70s and up. I might be able to rig up a smaller pipe to at least see what it sounds like.
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Old 10-10-2008, 12:18 AM   #12 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Pam Falcioni from Powroll answered some questions I had via e-mail, and one of the things she told me was that a good all-around performance exhaust for Honda 50s and 70s, including with their 85cc bore kit, was to use a 1-1/4" headpipe, no longer than 30", with a 3" supertrapp on the end, and run 5-7 discs in it.

I wonder if that 2" unit you've got is intended to go on the end of a two-stroke expansion chamber? I've seen two-stroke muffler body kits that take the 3" discs; I thought of putting one on this street-legal YZ490 project I was tinkering with before just making my own muffler out of sheet.
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Old 10-10-2008, 10:27 AM   #13 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Found this on Ebay:

Supertrapp 2 Inch Disc Series Disc Resonator 3/4" Pipe - eBay (item 150288137294 end time Oct-26-08 1012 PDT)

This guy sells welding supplies. Looks similar, you could get the discs from that.
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Old 10-10-2008, 10:36 AM   #14 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

Quote:
Originally Posted by zuphilius View Post
Found this on Ebay:

Supertrapp 2 Inch Disc Series Disc Resonator 3/4" Pipe - eBay (item 150288137294 end time Oct-26-08 1012 PDT)

This guy sells welding supplies. Looks similar, you could get the discs from that.
Dude! Awesome! Thanks for the search!
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Old 10-10-2008, 03:18 PM   #15 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

the one on ebay looks like it would be nice for a b&s engine.
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Old 10-10-2008, 07:11 PM   #16 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

I've got a Powroll built Supertrapp setup for my 'B' bike, I love the sound. I need to get it coated though, I was in a rush and had Powroll send it without their normal finish on it. At the time I was going to weld a bung on for an O2 sensor... never did fire that up.
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Old 10-10-2008, 09:44 PM   #17 (permalink)
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Re: Vintage Supertrapp Muffler(?) for Minis

This place has some cool Suppertrapp style mufflers and arrestors. They could be adapted to alot of apllications!

I've used the 10" stainless one before on a small bike before..
Appletree Automotive VW & Dune Buggy Parts Service - Product Catalog
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