Prince George Vintage Motorcycle Club

Technical Section => Complete Rebuilds => Topic started by: supdve on April 05, 2011, 10:21:04 PM

Title: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:21:04 PM
I don't see a build topic or pics of Dennis' build so I'll put a little something here. Dennis if you do not want this here i will remove it.

(http://i255.photobucket.com/albums/hh130/supdve/d6cad67e.jpg)
Title: Re: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:21:40 PM
(http://i255.photobucket.com/albums/hh130/supdve/467003af.jpg)
Title: Re: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:22:36 PM
(http://i255.photobucket.com/albums/hh130/supdve/33198b2e.jpg)
Title: Re: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:24:15 PM
Very exhausting building a bike

(http://i255.photobucket.com/albums/hh130/supdve/e0cde41a.jpg)
Title: Re: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:25:33 PM
(http://i255.photobucket.com/albums/hh130/supdve/cc744d67.jpg)
Title: Re: Dennis' Drag Bike
Post by: supdve on April 05, 2011, 10:27:35 PM
(http://i255.photobucket.com/albums/hh130/supdve/366a02e9.jpg)
Title: Re: Dennis' Drag Bike
Post by: Donovan on April 07, 2011, 06:37:19 PM
Great pictures.  They should be kept on as then we can see the progression as the bike is completed.  Guy looks a bit confused in the first picture.
Title: Re: Dennis' Drag Bike
Post by: Dennis on April 08, 2011, 11:00:39 AM
Thanks for posting the photos.  I was really pleased that so many members dropped by to check it out.

I welded in the rear motormount last night and am working on the front ones next.

I have some real momentum on this project, but will likely have to sideline it a bit while I get my camper ready for a trip in May.  Kinda sucks.
Title: Re: Dennis' Drag Bike
Post by: Dennis on December 24, 2011, 02:22:50 PM
Stuntman started this, and I should have added some pictures as things went along.  After our tech nite and firing up the drag bike, I am inspired to maybe add photos as I move into the final stages.

(http://i582.photobucket.com/albums/ss263/ironpan65/Club%20Pics/12202011166.jpg)

http://www.youtube.com/watch?v=t3dALd1UN1w&feature=g-upl&context=G2dd0cc1AUAAAAAAAAAA

There are just a few finishing touches, before stripping and painting.  I need to shorten the "stinger" (2 stroke word for "muffler"  ... don't know why).  Once the bike is disassembled I have some finishing welding to do.  Mostly places I could not reach when assembled. 

I don't plan to do much with the engine just yet, although I am still surfing the web for a cheap YZ Cylinder and Piston.  There is one on Ebay right now that is pretty close to my price range, but I drained my Paypal account so I have to wait.

I have leftover black paint for the frame, and I think I have some leftover Yellow for the tank and fender.  I don't know if automotive paint goes bad with time, but it is left over from when I painted my XS650 in 2005.
Title: Re: Dennis' Drag Bike
Post by: Dennis on January 15, 2012, 11:03:13 PM
Anyone know about repacking mufflers?  I chopped the stinger this weekend (about a third shorter than it was).  Inside were the charred remains of what had been fiberglass packing.  I want to repack it with something before I weld it up.
Title: Re: Dennis' Drag Bike
Post by: Rusty Bucket on January 16, 2012, 01:44:15 AM
I repacked the expansion chambers on my 550 Suzuki once in awhile, after burning the accumulated gunk out of them (warning warning environmental disaster) with regular fibreglass matting wrapped with baling wire, but the modern stuff for repacking dirtbike mufflers is pretty easy to work with - though I guess it is more intended for four strokes? - that's what I used to wrap the Vance and Hines cores from an old Big Twin exhaust currently residing in my Guzzi's otherwise-empty cans.  2 packages was about 35 bucks, if I recall, from the Yamaha dealer.  Not sure if the same stuff would get used for a two stroke - the matting is dense.  Tell Chris what you are wanting it for and I'm sure he'll find a catalogue that would have the correct stuff for the application.
Title: Re: Dennis' Drag Bike
Post by: Dennis on July 31, 2012, 01:09:49 AM
All fabrication is finished.  Stinger is repacked.  I even have a kick stand now.  All parts but for the exhaust are painted.   I used no Bondo, just a few cans of spray paint. Depending on my commitments, I will start assembling tomorrow.

Anyone got a couple of Yamaha stickers kicking around?  The tank and fender are yellow like the old YZs (even though the IT400 was blue).  I used tank sealer this time before I painted the gas tank.

I will post photos as soon as its a roller.

Peace & Grease, Dennis
Title: Re: Dennis' Drag Bike
Post by: Donovan on July 31, 2012, 09:49:38 AM
Dennis when can we see the drag bike project?  It is ride night today, will you be around for a visit?

Donovan
Title: Re: Dennis' Drag Bike
Post by: Dennis on July 31, 2012, 12:07:09 PM
I hope to be in my shop tonight.  I will be skipping the ride because I still have not fixed my throttle cable, and I want to get this project done.  Anyone want to drop by after the ride is welcome.  I may even have some beer on hand.

Peace & Grease, Dennis
Title: Re: Dennis' Drag Bike
Post by: Dennis on August 08, 2012, 08:53:26 PM
This project was started in March 2011.  But for some last adjustments and a fuel petcock, its finished.  I can't wait to try it out.  I am bummed that Friday Night Drags are cancelled this week. 

(http://i1219.photobucket.com/albums/dd433/smith5304/002-8.jpg)

(http://i1219.photobucket.com/albums/dd433/smith5304/003-8.jpg)

(http://i1219.photobucket.com/albums/dd433/smith5304/004-4.jpg)

(http://i1219.photobucket.com/albums/dd433/smith5304/005-3.jpg)

Peace & Grease, Dennis

Title: Re: Dennis' Drag Bike
Post by: Rusty Bucket on August 08, 2012, 10:45:34 PM
Wawesome!
Title: Re: Dennis' Drag Bike
Post by: Hans on August 08, 2012, 11:07:44 PM
Parts of Tabour have been paved...test 'er there  ;D
Title: Re: Dennis' Drag Bike
Post by: Billy Thunder on August 09, 2012, 09:04:58 AM
Cool bike - I like the minimalist look. Nothing extra - just what is needed to make it go...
Title: Re: Dennis' Drag Bike
Post by: MaximX on August 09, 2012, 10:01:54 AM
Looks nice.  No tach?  How will the 100lb pilot you no doubt have ready to ride it know when to shift?  Looking forward to seeing it run.

Mike
Title: Re: Dennis' Drag Bike
Post by: fast1 on August 10, 2012, 10:04:35 PM
   For the record I am 135 lbs and shift by the seat of my pants. Oh yeah, he hasn't asked me yet. My r.t. sucks but can get to the other end expediently. Cheers.
Title: Re: Dennis' Drag Bike
Post by: PeggySue on August 10, 2012, 10:54:15 PM
Nice work there, mister.
P.
Title: Re: Dennis' Drag Bike
Post by: Dennis on August 18, 2012, 12:26:51 PM
I couldn't resist snagging this photo from MaximX's photobucket.  I even have the front wheel off the ground.

(http://i1219.photobucket.com/albums/dd433/smith5304/firstrace.jpg)

Peace & Grease, Dennis
Title: Re: Dennis' Drag Bike
Post by: thejij on August 18, 2012, 02:33:33 PM
awesome photo of you dennis... you look ready to race for sure
Title: Re: Dennis' Drag Bike
Post by: madmac74 on August 18, 2012, 09:50:37 PM
  Thats a sweet Shot of you leaving . Nice work indeed  ;D
Mac
Title: Re: Dennis' Drag Bike
Post by: Dennis on August 22, 2012, 12:12:10 AM
This video was an inspiration for my bike.

http://www.youtube.com/watch?v=ST4jjH4rPGc

Supposedly he was getting less than 10 second 1/4 miles but the internet is full of braggarts.   There are lots of comments following the video.  One thing I noticed was he really cranked up the sprocket ratios. 

Here is a great video of a CR500 with the timing verified.  10.5 at 120mph

http://www.youtube.com/watch?v=RJTuQrSbAfw

I started this project wanting a 500cc or a 490 air cooled two stroke.  I ended up using an IT400 because I got it for $160.  I have only had to add steel for the frame and tires ( and a few others odds & sods)  The rest of it was hanging around my shop.  I still think there is a latent  sub 13 seconder  waiting to blossom from this pile of vintage dirt bike.

Peace & performance, Dennis

Title: Re: Dennis' Drag Bike
Post by: yamadirt on November 06, 2012, 10:57:49 PM
That's an awesome bike Dennis. Don't think I've ever seen an Dirtbike/Dragster. The exhaust turned out nice.