Jump to content
Sign in to follow this  

drz400s aft rack and bags


Just finished making the aft rack from 3/8 id stainless. Bags I sowed from 18 guage polyurethane coated fabric.

Here is the full rundown of what i did.

The only thing so far that i did was the airbox mod with the sewer hose to block the sound. That restored the bike from running rich to normal mayby a bit lean at 4000 feet and 90-100 degr. I felt that there was more to be done. In went the k&n su-4000 filter.

Dynojet kit for the drz400s. From the kit i installed the following parts: Big spring, needle, clip for the needle. I changed the pilot jet to a 25 from stock 22,5. Installed the kientech fuel screw, and put in kientech stainles screws for the bowl. I decided to leave the stock main jet 142,5 i think. I really like the results. When i pull up the highway 5% grade to 5500 feet the bike for sure pulls stronger at a lesser throttle setting. 0 to1/4 throttle good response and pickup with only little backfire closing the throttle. 1/4 to 3/4 throttle very strong pickup especially from 1/2 to 3/4 throttle. Maby a bit room for improvement about 1/4 throttle. when the needle circuit picks up at 1/4 throttle there is a tiny hesitation, maybe so little not worth mentioning. I think i have to run it a bit more to home in on it. And then figure out what to change...maybe try lowering the needle 1/2 step with the suplied spacer. From 3/4 to 1/1 throttle the bike pulls strong. So i believe the choice of main jet is fine. In the next day or so i will do a spark plug test. I left the fuel mixture screw at 1 1/2 turn.as per kientech recommend. It needed a bit more fuel from idle to 1/4 throttle so I ended up with fuel screw 2 turns out.....nice.

I am in the process of taking all the covers and make a negative fiberglass mold, in which I will produce a carbon fiber replica of the original plastic cover. Have one done so far....looks nice. The pdf slide show is of the rack and bags. I welcome any questions at: ebrabaek@sbcglobal.net enjoy

View attachment: erlings_thumper.pdf

Sign in to follow this  

User Feedback

Recommended Comments

There are no comments to display.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

  • Similar Content

    • By Bryan Bosch
      2019 American Motorcyclist Association-sanctioned Grand National Cross Country Series season gets underway Feb. 23

      Electric mountain bike classes added, youth racing program expands
      PICKERINGTON, OH – February 20, 2019 – (Motor Sports Newswire) –  The 2019 season of the AMSOIL Grand National Cross Country Series, an AMA National Championship, kicks off Feb. 23-24 with the Big Buck GNCC in Union, S.C.
      For 2019, the series’ added classes for electric-assisted mountain bikes, which will have a stand-alone event at Loretta Lynn’s Ranch in Hurricane Mills, Tenn., on July 27, and will be at eight of the series’ 12 other rounds.
      The GNCC also reduced the number of adult competition classes and increased the number of rounds in its Micro (50cc) program for racers ages 4 to 8.
      GNCC series promoter Racer Productions will donate 40 tickets for each of the series’ 13 events to the Veterans Ticket Foundation, which will make them available to active duty and retired service men and women and their families at no cost.
      Series events will be broadcast live on RacerTV.com and rebroadcast on NBC Sports. Live coverage of the Big Buck GNCC begins at 1 p.m. ET Feb. 23.
      For information about the GNCC series, including its rules and class structure, visit gnccracing.com.
      2019 AMA GNCC Series Schedule
      Feb. 23-24: Big Buck Farm, Union, S.C.
      March 9-10: Hogwaller, Palatka, Fla.
      March 16-17: Aonia Pass MX, Washington, Ga.
      March 30-31: Steele Creek Campground, Morgantown, N.C.
      April 13-14: Moree’s Sportsman’s Preserve, Society Hill, S.C.
      May 4-5: X Factor Whitetails, Peru, Ind.
      May 18-19: Sunday Creek Raceway, Millfield, Ohio
      June 1-2: Seneca Highland, Alpine, N.Y.
      June 22-23: Snowshoe Mountain Resort, Snowshoe, W. Va.
      July 27: Loretta Lynn’s Ranch, Hurricane Mills, Tenn. (eMTB only)
      Sept. 14-15: Johnson Family Farm, Harpursville, N.Y.
      Sept. 28-29: Matthews Farm, Mount Morris, Pa.
      Oct. 12-13: TBA
      Oct. 26-27: Ironman Raceway, Crawfordsville, Ind.
      About the American Motorcyclist Association
      Founded in 1924, the AMA is a not-for-profit member-based association whose mission is to promote the motorcycle lifestyle and protect the future of motorcycling. As the world’s largest motorcycling rights and event sanctioning organization, the AMA advocates for riders’ interests at all levels of government and sanctions thousands of competition and recreational events every year. The AMA also provides money-saving discounts on products and services for its members. Through the AMA Motorcycle Hall of Fame in Pickerington, Ohio, the AMA honors the heroes and heritage of motorcycling. For more information, visit www.americanmotorcyclist.com.
      Not a member? Join the AMA today.
      Source: American Motorcyclist Association