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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> supertrapp /cgi-bin/YaBB.pl?num=1243638200 Message started by danroot on 05/29/09 at 16:03:20 |
Title: supertrapp Post by danroot on 05/29/09 at 16:03:20 just got my supertrapp in the mail yesterday and got it installed today. the old exhaust was a pain in the ass to get off, whoever had the bike before me spot welded some of the clamps down and only after about an hour of hammering was i able to get it off. anyway, the job was ugly, i need to clean up the fit abit or just add a heat shield to hide the mess. cosmetics aside, what a difference! way more response, first time getting up to 50mph on the new pipe i had no idea i was going that fast. the sound is great, sounds like a real bike now. i got a few more upgrades to do before the performance bits are done then i can focus on the cosmetics. anyone have any thoughts on the chain conversion? |
Title: Re: supertrapp Post by danroot on 05/29/09 at 16:17:04 also, those with a trapp, how many discs do you use? |
Title: Re: supertrapp Post by Mr. Hyde on 05/29/09 at 16:38:44 I was gonna ask you how many you used. |
Title: Re: supertrapp Post by LANCER on 05/29/09 at 18:29:43 Seems like a lot of folks are in the 8-12 range. I've got 3 on my SRX600 but then the plates are seperated by 3/8" nuts for spacers. :) I'll need to get a photo of it when I get home. |
Title: Re: supertrapp Post by 12Bravo on 05/29/09 at 19:24:44 I am running 6 disks in mine and didn't have to rejet. Make sure that you clean the muffler really good before starting your bike. I didn't get all of the manufacturing oil cleaned off mine and it turned part of the muffler blue right away. |
Title: Re: supertrapp Post by gazoo07 on 05/29/09 at 19:38:00 I am running the open end cap on mine which is supposed to flow the same as 10-12 discs (according to Supertrapp). I also have a dynojet kit and stock air filter and get 60 mpg highway and plenty of extra power. Gazoo www.lubedealer.com/1lube |
Title: Re: supertrapp Post by seviersavage on 05/29/09 at 20:54:06 Running 14 discs on mine. And a vm roundslide carb. Seviersavage |
Title: Re: supertrapp Post by justin_o_guy2 on 05/29/09 at 22:26:03 Clean it b4 u run it, clean it good. |
Title: Re: supertrapp Post by photojoe on 05/30/09 at 06:49:15 I've been running my '87 since March 2008 with -0- discs. Tried 6 discs w/open end cap. Didn't care for the sound and didn't notice any change in performance, so I removed them after about 2 weeks. Probably not recommended, but zero discs works for me. |
Title: Re: supertrapp Post by PTRider on 05/30/09 at 07:24:49 http://www.supertrapp.com/resource/faqs.asp#34 Quote:
Quote:
The research I've done shows that backpressure is always bad, but SuperTrapp's explaination is the common shadetree mechanic's explaination. The exhaust system needs to be properly tuned for the hot pulsating gas with a negative wave of sound pressure energy at the exhaust port at the time the exhaust valve opens--that's what scavenging is. Wide open and straight through pipes do not provide for this. They'll often sound more powerful while they measure as being less powerful. |
Title: Re: supertrapp Post by diamond jim on 05/30/09 at 10:20:13 It's also a short pipe/long pipe thing too. The cone acts as an expansion tube and the bike somewhat sees it as a shorter pipe yet you have the resistance (discs) that would be present with atraight pipe of the same length. |
Title: Re: supertrapp Post by Rockin_John on 05/30/09 at 10:30:06 On the possibility of a chain conversion: I recommend that it only be done on 5-speed bikes, and you not use the tallest (highest ratio) combo of 17/43 tooth sprockets unless you weigh less than 180 pounds and plan to run the bike at 75-80mph Interstate speeds a lot. I wanted to try that really tall gearing myself, and at over 250 pounds, the fifth gear is so high that it has virtually no acceleration at all above 65mph. I have to drop to fourth and get it up past 70-75mph; then drop it into fifth and hope I'm not bucking a headwind. I also have a SuperTrapp on the chain drive converted bike. But I also have a rather large windshield on it, as it serves as my "road" bike at this time. The chopper pictured below is my city cruising bike! ;) Much recommended that anyone larger than 150-180 pounds or with a big windshield etc... at least step down to the 17/45 ratio like Savage_Greg and some others used. I know I need to back down at least that far, maybe more. Also be warned that using a small front sprocket in your combo can cause rubbing problems (be sure and read the conversion thread in the tech section before buying and installing parts!!!) And also be aware that there are certain sprocket combos which won't let the wheel/axle land in the adjustment zone on the swingarm; then you can't get the chain slack adjusted correctly. Aside from the possible pitfalls, the chain drive is very cool, as it lets you just putt along at 70+mph without feeling like you are winding the old thumper too tight for long periods of time. |
Title: Re: supertrapp Post by rigidchop on 05/30/09 at 11:51:39 why do you only recommend it for 5 speeds? i have the chain on my 4 and love it. just askin. |
Title: Re: supertrapp Post by Duane on 05/30/09 at 13:21:25 The belt drive is what makes it so cool. I noticed some of the new HD sport models have chains this year. |
Title: Re: supertrapp Post by Rockin_John on 05/30/09 at 21:17:46 58434D434E4942455A2A0 wrote:
Unless you are fairly lightweight, the 4-speed has a first gear which is already as tall as it needs to be. Gearing up higher would put too much strain on the clutch (IMO) unless the bike is always very lightly loaded. Even in deference to the weight issue, first gear could be too high for some people to navigate tight corners safely too. But if it works for you... fine! Ride with it! :) |
Title: Re: supertrapp Post by danroot on 06/01/09 at 18:03:38 is this how its supposed to look? http://i11.photobucket.com/albums/a173/twocoloreyes/bike/DSCN2009.jpg http://i11.photobucket.com/albums/a173/twocoloreyes/bike/DSCN2010.jpg |
Title: Re: supertrapp Post by justin_o_guy2 on 06/03/09 at 07:00:12 No, it looks like you didnt clean it b4 running it. The manufacturing oils burned on it. Not covered under warranty. |
Title: Re: supertrapp Post by justin_o_guy2 on 06/03/09 at 07:00:41 485751564B4C7D4D7D45575B10220 wrote:
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Title: Re: supertrapp Post by danroot on 06/07/09 at 18:29:29 it was used, so the coloration was already on it, i was referring more to the actual connection. |
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