• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

My 2011 SMR 630 review and (cheap) mods for heavy city traffic

RDTCU said:
You know it's fast because it says "RACING!" on it... :p

Glad you like the JD!
Click to expand...

Haha yep...I'm gambling on the battery. Never heard of it before and dunno how long it'll last. But for $50 (1/3 of the major brands) I'll take my chance :D
 
Btw, RDTCU, based on your experience modifying the cans, if I were to get a custom fabricated single sided can, what measurements would you recommend? I mean the inner core (perforated pipe) diameter, length? Outer can diameter, length?

Anyone else have thoughts on this?
 
If you're going to go to a single can, you'll have to make a new bend section to replace the "Y" where it splits off to the two now, and it probably needs to be roughly the same diameter as the midpipe is now, in front of the "Y"

As for the core, I would keep it about the same size as the midpipe, maybe a touch smaller depending on what is available.
Make sure they use some nice quality perforated tubing or it can sound terrible.

Good:
20100301173555.jpg


Bad:
perforated_pipe.jpg


As for the OD, the larger it is, the deeper the sound, as long as you're using good glass packing.

An oval will get you more internal volume without hanging too far off the bike.
 
RDTCU said:
If you're going to go to a single can, you'll have to make a new bend section to replace the "Y" where it splits off to the two now, and it probably needs to be roughly the same diameter as the midpipe is now, in front of the "Y"

As for the core, I would keep it about the same size as the midpipe, maybe a touch smaller depending on what is available.
Make sure they use some nice quality perforated tubing or it can sound terrible.

Good:


Bad:


As for the OD, the larger it is, the deeper the sound, as long as you're using good glass packing.

An oval will get you more internal volume without hanging too far off the bike.
Click to expand...

Cool! I just picked up a new vernier caliper to measure things up...dunno where my old one went :/
would be cool if anyone's got the midpipe inner diameter measurements so I don't have to take it apart just to measure the it :D

BTW, do you think a 4 inch diameter aluminum tube is sufficient for the outer can? that's the largest diameter pipe I can find at the moment. If it won't accommodate, then I'll have to get one custom made out of stainless steel sheets...which is a lot more work and prolly more weight

organ donor said:
Errm .... you could maybe make your own skidplate out of Coke cans?
Click to expand...

Naaah...I wouldn't go with coke cans...but Folgers cans might do cause they're a bit thicker
 
riz said:
BTW, do you think a 4 inch diameter aluminum tube is sufficient for the outer can? that's the largest diameter pipe I can find at the moment. If it won't accommodate, then I'll have to get one custom made out of stainless steel sheets...which is a lot more work and prolly more weight
Click to expand...


It'll work, but it'll be louder and higher pitched than something with more volume.
 
RDTCU said:
It'll work, but it'll be louder and higher pitched than something with more volume.
Click to expand...

Ok so I opted to fabricate a bigger diameter can. I didn't want it to be too loud/high pitched. So it's gonna be around 5.5-6 inch diameter.
And since it's gonna be custom made from 1mm sheet metal, might as well play around with the design. Akra's hexagon looks nice! :D
 
So here it is. Custom stainless steel headers and muffler. 2in inner diameter, hexagon-ish outer can. 45cm in length.
Sounds great and it pulls...bottom end torque definitely improved. Cost me about $150
husky%20new%20muffler.jpg
 
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