XL 250 build - Page 2

john479 · 04-20-2012, 04:30 AM

Looks very nice, love the colour but I especially like that tail. So nice

pommie john · 04-20-2012, 05:40 AM

Quote:

Originally Posted by john479

Looks very nice, love the colour but I especially like that tail. So nice

The seat's from a Bultaco Astro. 70s flat tracker.

pommie john · 05-24-2012, 07:05 PM

OK, I've joined a few bits of bent tube together with half an old expansion chamber that a mate gave me. It looks a bit like an exhaust, hopefully it might fit the bike.
I'll check when I get home this afternoon.

It will be getting some kind of silencing on the end . That's the next task.

bk brkr baker · 05-25-2012, 07:11 AM

CB 350 front brakes have a torque strap that connects to the fork leg . I believe your front brake to be from an earlier 305.
I run a CB350 brake on the front of my Ducati Vintage racer.

pommie john · 05-25-2012, 03:20 PM

Quote:

Originally Posted by bk brkr baker

CB 350 front brakes have a torque strap that connects to the fork leg . I believe your front brake to be from an earlier 305.
I run a CB350 brake on the front of my Ducati Vintage racer.

I knew there was something amiss about it. The wrecker I bought it off said it was a CB350, but.... when my mate machined the little flange off to stop it binding he noticed a Yamaha symbol inside. It seems to be an early Yamaha brake plate and a CB350 hub!
I'm waiting for the shoes to be re lined right now and hopefully it will all work soon.

Al Tuna · 05-25-2012, 03:28 PM

That pipe looks damn good! Hope it fits.

brucifer · 05-25-2012, 06:26 PM

Yeah, that pipe does look good. Nice job.

pommie john · 05-25-2012, 07:12 PM

It fits!

The curve worked out about right. It tucks in just how I hoped.

I've also been given this muffler. I'm thinking about trying to make it fit a bit like this

Pigford · 05-26-2012, 02:08 AM

That pipe is well smart

How about just fitting a small baffle & turning up an nice ally end-cap to tidy it up - less is more

pommie john · 05-26-2012, 02:30 AM

Quote:

Originally Posted by Pigford

That pipe is well smart

How about just fitting a small baffle & turning up an nice ally end-cap to tidy it up - less is more

Yeah, good idea. The only worry is that it has to comply with racing rules which are 103 dB measured at half a metre from the exhaust at a prescribed RPM. That sound a lot, but when the noise meter is so close, it's quite an ask from a small baffle. I definitely agree that less is more, it's how much less I can get away with.

pommie john · 07-01-2012, 03:15 AM

It's pretty well finished.

A few details to be tidied up. The problem is, that although it starts first kick ( without the choke) it runs really rich and won't accept full throttle without spluttering. Also it idles best with the pilot screw fully in. Gotta be something wrong in the carb.

I'm thinking blocked air passage somewhere.

bikerfish · 07-01-2012, 03:55 AM

those needles and seats were known to wear out, leading to all kinds of carb issues. I've replaced a few of them and they ran like new afterwards.
that thing looks REALLY nice!

pommie john · 07-01-2012, 05:00 AM

Quote:

Originally Posted by bikerfish

those needles and seats were known to wear out, leading to all kinds of carb issues. I've replaced a few of them and they ran like new afterwards.
that thing looks REALLY nice!

Thanks, I'll have a look at that.

raytriplej · 07-12-2012, 06:27 AM

Nice work on the XL. Thinking outside the box!

Ray

pommie john · 07-13-2012, 02:54 AM

Quote:

Originally Posted by raytriplej

Nice work on the XL. Thinking outside the box!

Ray

Thanks.
I think it's finished now. I have a race next weekend . I put a dellOrto carb on it and set the points up properly and it seems to run pretty well now. My neighbours didn't like it too much, but....

05-24-2012, 07:05 PM	#18
pommie john ^OP Beastly Adventurer Joined: Apr 2008 Location: Brisvegas, Australia Oddometer: 1,133	OK, I've joined a few bits of bent tube together with half an old expansion chamber that a mate gave me. It looks a bit like an exhaust, hopefully it might fit the bike. I'll check when I get home this afternoon. It will be getting some kind of silencing on the end . That's the next task. __________________ The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. Bertrand Russell

05-25-2012, 07:11 AM	#19
bk brkr baker Beastly Adventurer Joined: Jul 2006 Location: The Bluegrass Oddometer: 4,210	CB 350 front brakes have a torque strap that connects to the fork leg . I believe your front brake to be from an earlier 305. I run a CB350 brake on the front of my Ducati Vintage racer. __________________ RR's Catnip Hill to Peoria ___Loopin' Seattle to WestFest It started with some beers __1500 miles to the Dentist Skeedaddle to Seattle______ A 30 year old on a Three Flags Run

05-25-2012, 03:28 PM	#21
Al Tuna PUI Offender Joined: Nov 2006 Location: Moran Nation Oddometer: 8,620	That pipe looks damn good! Hope it fits. __________________ Southeast Weather Map "I might as well keep going, there's no 'effing way I'm going back the way I came" Moran Nation 21 Club.

05-25-2012, 06:26 PM	#22
brucifer Beastly Adventurer Joined: Nov 2007 Location: Eureka, Ca. Oddometer: 1,669	Yeah, that pipe does look good. Nice job. __________________ 2006 KLR650-2002 Husaberg FC550E w/2008 FE550E engine-2000 Buell M2 Cyclone-Plated 1995 XR600R-1984 Honda CR500R-1984 Honda XL600R/XR650L Hybrid-1984 Yamaha TT600L-1981 Honda XR500R-1980 Honda CB750F

05-25-2012, 07:12 PM	#23
pommie john ^OP Beastly Adventurer Joined: Apr 2008 Location: Brisvegas, Australia Oddometer: 1,133	It fits! The curve worked out about right. It tucks in just how I hoped. I've also been given this muffler. I'm thinking about trying to make it fit a bit like this __________________ The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. Bertrand Russell

04-20-2012, 04:30 AM	#16
john479 Adventurer Joined: Feb 2011 Location: United Kingdom Oddometer: 97	Looks very nice, love the colour but I especially like that tail. So nice

05-26-2012, 02:08 AM	#24
Pigford British Joined: Sep 2009 Location: North Dorset, UK Oddometer: 753	That pipe is well smart How about just fitting a small baffle & turning up an nice ally end-cap to tidy it up - *less is more*

07-01-2012, 03:15 AM	#26
pommie john ^OP Beastly Adventurer Joined: Apr 2008 Location: Brisvegas, Australia Oddometer: 1,133	It's pretty well finished. A few details to be tidied up. The problem is, that although it starts first kick ( without the choke) it runs really rich and won't accept full throttle without spluttering. Also it idles best with the pilot screw fully in. Gotta be something wrong in the carb. I'm thinking blocked air passage somewhere. __________________ The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. Bertrand Russell

07-01-2012, 03:55 AM	#27
bikerfish flyfishandride Joined: Aug 2010 Location: western pa Oddometer: 993	those needles and seats were known to wear out, leading to all kinds of carb issues. I've replaced a few of them and they ran like new afterwards. that thing looks REALLY nice!

07-12-2012, 06:27 AM	#29
raytriplej Adventurer Joined: Jan 2012 Location: Cairns, Australia Oddometer: 30	Nice work on the XL. Thinking outside the box! Ray

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: .
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode