T-Hawk street 686cc Thumper

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Title: T-Hawk street 686cc Thumper

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Swiss	\| Move to Bottom Author
Rank:none Score: 0 Posts: 776 From: USA Registered: 03/26/2004 Time spent: 0 hours	(Date Posted:08/18/2006 9:16 AM) This is my current street toy. 686cc Yamaha TT600, Ported, cammed, dual 1 5/8" pipes w/megs under seat. Honda Hawk chassis, GS500 Suzuki front wheel/fender, EX500 Fairing, dual 37mm FCR carbs. This engine is identical to Mats old racebike except for slightly bigger carbs,Mats bikeran about 72hp on the dyno. He usde a 250RR chassis for his racebike.Swiss

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Swiss	\| Move to Top \| Move to Bottom 1#
Rank:none Score:0 Posts:776 From: USA Registered: 03/26/2004 Time spent: 0 hours	(Date Posted:08/18/2006 9:16 AM) This is my current street toy. 686cc Yamaha TT600, Ported, cammed, dual 1 5/8" pipes w/megs under seat. Honda Hawk chassis, GS500 Suzuki front wheel/fender, EX500 Fairing, dual 37mm FCR carbs. This engine is identical to Mats old racebike except for slightly bigger carbs, Mats bike ran about 72hp on the dyno. He usde a 250RR chassis for his racebike. Swiss

mmgtl	\| Move to Top \| Move to Bottom 2#
Rank:none Score:0 Posts:18 Registered: 05/06/2004 Time spent: 0 hours	(Date Posted:08/20/2006 8:10 PM) That looks sharp. got any more pics, I can't see the head pipes did you run them up over the top? -------------------------------------------------------------- 71sl70, 74MT125, 79xr185, 82XR80, 82atc70, 84atcBig Red, 82X500R, Mini buggy w/76XL350 eingine, 96kx80w/XL125 engine, 91rm80, 82 ATC250r, 83ATC250r, 83ATC200X Too Many Toys Not Enough Time

Swiss	\| Move to Top \| Move to Bottom 3#
Rank:none Score:0 Posts:776 From: USA Registered: 03/26/2004 Time spent: 0 hours	(Date Posted:08/21/2006 1:01 AM) The Yamaha 600 Thumper ports already have an upward curve and to run them forward and then down you are just increasing the bend curve. It was easier to run them above the engine and then back to dual megaphones and then out to the custom dual aluminum mufflers. The material used for the mufflers by the was from a landing strut piece off a military helicopter. Still has the engraved id tag on it. Built the outlets to match the aluminum housings. Also made the billet kickstart lever from scratch. My plan is to swap out the 1 5/8" mild steel exhaust pipes that are currently wrapped with some 1 3/4" stainless headpipes. I did the first ones as "prototype pieces". I have another pic of the other side I will send in later tonight. Swiss

brucifer	\| Move to Top \| Move to Bottom 4#
Rank:none Score:0 Posts:288 From: USA Registered: 03/19/2005 Time spent: 0 hours	(Date Posted:08/23/2006 5:49 PM) Nice bike swiss. There's a guy on the thumper page [I think] who's building the same chassis/engine combo. Would you be interested in building me a pipe for my TT600? Bruce -------------------------------------------------------------- '06 Buell Ulysses 01 XR650R 75 XL350 84 XL600R 86 TT600 77 XT500

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LandSharkGT	\| Move to Top 5#
Rank:none Score:0 Posts:114 Registered: 09/12/2006 Time spent: 0 hours	(Date Posted:10/12/2006 5:00 AM) Sweeeettttt!!!!!!!!!!!!!!!!!!

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