Author Topic: 550 bobber attempt  (Read 15899 times)

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Offline COMB2

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Re: 550 bobber attempt
« Reply #25 on: October 23, 2010, 03:44:11 AM »
Guess the spare motor will come in handy

Offline mlinder

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Re: 550 bobber attempt
« Reply #26 on: October 23, 2010, 04:13:52 AM »
Consider adjustable 'baffles'. Take a stainless washer with about the same OD as the pipes ID.
Rig up a way to turn them on a spindle, with a degree indicator. Use nuts to clamp them in place. This way, you can get some back pressure, tune the sound (those pipes will drive you nuts in about 4 blocks), and you will not have everyone hating you.
No.


Offline nitroeagle

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Re: 550 bobber attempt
« Reply #27 on: October 23, 2010, 07:21:48 PM »
Whats the rear fender off of?

Offline COMB2

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Re: 550 bobber attempt
« Reply #28 on: October 23, 2010, 08:10:12 PM »
Whats the rear fender off of?

It is the front fender. I filled in all the holes with weld and grounded them back flush

Offline COMB2

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Re: 550 bobber attempt
« Reply #29 on: November 02, 2010, 03:38:00 PM »
Got the dyna coils on electronic timing to match


New front tire, rear on the way




made new kicker pedal. Used a bike pedal axle and made up the foot part. (Old bicycle is no longer ridable)



Also made up the washer baffels and got them intalled in the pipes

Offline theofam

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Re: 550 bobber attempt
« Reply #30 on: November 02, 2010, 05:11:41 PM »
That looks AWESOME!  I cracked up when I saw the front tire - lovin' it.  Where do you get the bungs?

Offline COMB2

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Re: 550 bobber attempt
« Reply #31 on: November 02, 2010, 05:43:33 PM »
Can't even remember where I got the bungs. Check out Lowbrow Customs they got a good selection my friend just got a nice kit from them

Offline theofam

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Re: 550 bobber attempt
« Reply #32 on: November 03, 2010, 11:19:33 AM »
Thanks for the tip on Lowbrow Customs.  They have great fab parts.  Can't wait to see the rear tire mounted!

Offline Anti-Johnny

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Re: 550 bobber attempt
« Reply #33 on: November 03, 2010, 12:54:34 PM »
Thats a mean looking bike! Nice Transformation
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Offline greenjeans

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Re: 550 bobber attempt
« Reply #34 on: November 03, 2010, 01:51:40 PM »
Gotta say......  I love it. 

Listen to the other guys about running some sort of baffle to get some back pressure.  It really is needed.

Is it going to get painted ?    I'd almost leave everything bare metal.  Looks prett darn cool as it sits.  Love that chain tensioner.
Yep, I'm the kid that figured out how to put things back together...eventually.

Offline COMB2

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Re: 550 bobber attempt
« Reply #35 on: November 03, 2010, 02:21:32 PM »
Wash baffles are in. Not painting anything. I'm lovin the rat style right now
Just got trailer fender today the one in the pic is gone   It is so flimsy

Offline theofam

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Re: 550 bobber attempt
« Reply #36 on: November 03, 2010, 02:27:36 PM »
I use washer baffles on another bike with straight pipes, it works great. Don't know how you did them, but a buddy tack welded a washer standing up on a bolt's head. It was easy to drill holes in the pipes a couple inches in from the tips, drop the washer/bolt combo through, and secure with a nut outside the pipe. It gives you total flexibility in turning the washer to dial it in until it runs right.

Offline COMB2

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Re: 550 bobber attempt
« Reply #37 on: November 03, 2010, 02:48:16 PM »
That's what I did after everyone said I better
Just like you said

Offline chainsaw

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Re: 550 bobber attempt
« Reply #38 on: November 03, 2010, 05:19:43 PM »
I have to agree about the tuning issue with those pipes so short, but honestly this bike turned out amazing looking. The taillight and wiring container is really cool. Great work!

Offline COMB2

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Re: 550 bobber attempt
« Reply #39 on: November 07, 2010, 08:25:28 AM »
Back tire and new fender on. new bearings in too






Offline theofam

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Re: 550 bobber attempt
« Reply #40 on: November 08, 2010, 09:42:30 PM »
That's one of my favorite bikes I've seen on here, and I'm partial to cafes!  The back tire looks awesome, but I'm kinda liking the mixed front knobby w/ rear street tire - that almost makes it look more "rat" - like you just used whatever was hanging around in the shop. Either way- great job!

Offline M.Harrigan

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Re: 550 bobber attempt
« Reply #41 on: November 11, 2010, 07:10:20 PM »
Lowbrow is awesome. Also check out Bungking.com for bungs and fab parts.

Offline sinister902

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Re: 550 bobber attempt
« Reply #42 on: November 12, 2010, 05:18:46 AM »
has anyone that has done this "washer baffle" thing taken pictures of the process? the description of it isnt enough for me to figure out whats going on and I would love to make some pipes from scratch and use washers as baffles....

Offline knowsnothing

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Re: 550 bobber attempt
« Reply #43 on: November 12, 2010, 08:04:24 AM »
Hey sinister, 

I think spikebike made some in his build thread.  He actually has a video of how he worked them.   Last page, 2nd post i think.

http://forums.sohc4.net/index.php?topic=27238.175 
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Offline COMB2

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Re: 550 bobber attempt
« Reply #44 on: November 12, 2010, 08:14:45 AM »
I'll get some pics later of some I got laying around

Offline DualCamDan

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Re: 550 bobber attempt
« Reply #45 on: February 01, 2011, 08:41:20 PM »
I know it's been a while, But any updates on this thing? i like the way its coming out.

Offline COMB2

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Re: 550 bobber attempt
« Reply #46 on: February 01, 2011, 10:43:10 PM »
Waiting on some slow jets to come in. Running real lean at idle

Offline fastbroshi

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Re: 550 bobber attempt
« Reply #47 on: February 01, 2011, 11:17:05 PM »
Did you find some jets that are an exact fit?  If so please let us know where you got them.
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Offline DualCamDan

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Re: 550 bobber attempt
« Reply #49 on: February 02, 2011, 03:44:03 AM »
Are you running a single petcock or dual petcocks?

If i remember correctly, the quad (4barrel) carbs love fuel. A single will cause you to starve a bit. Running dual you feed 2 on each side, instead of all 4 from 1.

I'm still new to it, but check and see if 2 of your pipes are running hotter than the other 2... Thats how mine was, I have a Sportster tank on my 550, Now set up with dual petcocks.

made new kicker pedal. Used a bike pedal axle and made up the foot part. (Old bicycle is no longer ridable)




Btw, might be a dumb ?, but what did you use for your kick arm to put the pedal on? stock tapped or welded? or did you swap the entire arm?
« Last Edit: February 02, 2011, 03:48:59 AM by DualCamDan »