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Message started by NicholasTanguma on 03/30/16 at 04:32:47

Title: Custom Super Shorty Exhaust
Post by NicholasTanguma on 03/30/16 at 04:32:47

I'd like to put the LS650 engine into an ol' skool hardtail springer project. Do you all think a very short and lightweight exhaust pipe with an internal baffle will be solid enough on its own without any other mounting points, like in the first pic of the shorty?

David Roy at Voodoo Vintage told me of the "free-floating" exhausts he's built for the 650, "We've never had one rip out the studs. I believe your pipes would bend or crack before doing that. Unless you had some weak stud bolts."

But I'm looking for some confirmation from you guys. Seems maybe a lightweight short pipe would survive better than a long pipe.

http://https://scontent-iad3-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/23835_10150329572555001_441606_n.jpg?oh=6da0c950e40a61d801e7b9eea5eac4e1&oe=577D9F09

http://https://scontent-iad3-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/23835_10150329572575001_3233236_n.jpg?oh=b13aa0caac2c05a7abd5c8c95d49314b&oe=578C7EB4

http://https://scontent-iad3-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/394717_10151249279260001_1332757299_n.jpg?oh=15156f1e9dd0f72fd5f71bc8f4ef6012&oe=577B2763

Title: Re: Custom Super Shorty Exhaust
Post by justin_o_guy2 on 03/30/16 at 06:31:59

You might get by without breaking the bolts, as long as it's short enough. Then you run into scavenging and noise issues. Someone may have a Real answer for you, I'm not sure.
It Would ditch some pounds, and lighter Is better.

Title: Re: Custom Super Shorty Exhaust
Post by DesertRat on 03/30/16 at 15:49:49

not sure I would like dumping the exhaust into my pant leg.

Title: Re: Custom Super Shorty Exhaust
Post by justin_o_guy2 on 03/30/16 at 18:48:46

That's where mine goes,, but, I do see your point.. that's a lot more Of it, and it's Hot.

Title: Re: Custom Super Shorty Exhaust
Post by Kris01 on 03/30/16 at 19:18:36

I don't think I would trust it to not break the bolts. It might not be heavy but it does act like a lever on the bolts. They may fatigue under stress and break.

Title: Re: Custom Super Shorty Exhaust
Post by DesertRat on 03/30/16 at 19:36:49

the 3rd pic, #19 Scoundrelz bike

that exhaust with a kick-out tip would be nice on my ride ;)

Title: Re: Custom Super Shorty Exhaust
Post by chzeckmate on 03/31/16 at 00:09:58

I agree that the pipe would fail before the bolts would. If you're really concerned about this then you could put a brace on the down tube.

Title: Re: Custom Super Shorty Exhaust
Post by gizzo on 03/31/16 at 02:15:02

09283E283F391F2C394D0 wrote:

the 3rd pic, #19 Scoundrelz bike

that exhaust with a kick-out tip would be nice on my ride ;)

I like that one, too.

Title: Re: Custom Super Shorty Exhaust
Post by NicholasTanguma on 04/01/16 at 03:45:44

Yeah, for practical purposes--such as not setting my pants on fire--I like Scoundrelz exhaust best, too.

I talked to Bob at Windsor Cycles yesterday about the flange bolt question, and he said a short pipe of a pound or even pound and a half probably wouldn't break or strip out the bolts. However, he also said my bigger concern should be all the vibration produced by a big single eventually doing it anyway. :(

Still, Scoundrelz exhaust would make positioning the engine in the frame such a cinch that I'm actually kind of tempted to try it anyhow...

Title: Re: Custom Super Shorty Exhaust
Post by justin_o_guy2 on 04/01/16 at 08:28:25

Stabilize the end of the exhaust.. wouldn't be a big deal,would it? Anywhere along the length would do.