Kim Boyle's personal SR500 lit up the innerweb last year after its debut at the Chop Meet. A year later he's built another one, this time for a customer. Broad-stroke basics like the stance are obvious, but under closer scrutiny lots of hand-made details emerge. Here's what Kim has to say about it:
Bike name: Erwin SR500
Year and make, model, modifications: 1978 Yamaha SR 500. Top-end rebuild with a little head work, Mikuni VM36 carb, stainless header pipe with a an open reverse megaphone
Frame: Stock SR
Fork: Stock SR shaved legs, lowered 2.5" Progressive springs
Chassis mods: Rear shortened 8" all unnecessary brackets removed and cleaned up, new fender mounts, hack the stock fender to fit. Progressive 1200 series shocks 1" lower than stock
Year and make, model, modifications: 1978 Yamaha SR 500. Top-end rebuild with a little head work, Mikuni VM36 carb, stainless header pipe with a an open reverse megaphone
Frame: Stock SR
Fork: Stock SR shaved legs, lowered 2.5" Progressive springs
Chassis mods: Rear shortened 8" all unnecessary brackets removed and cleaned up, new fender mounts, hack the stock fender to fit. Progressive 1200 series shocks 1" lower than stock
Tire/wheel size and style: Stock Yamaha Mags 19" front 18" rear. 400-19" front- 450-18" rear, Firestone Deluxe Champion tires
Favorite thing about this bike: Probably the rear brake set up, My buddy Pat machined the rotor turning the center holes from rectangle to round and then drilled the rotor surface. then machined a brake stay, I cut down the caliper hanger by a lot, added a braided stainless line, trimmed the pedal down to a circle. It all cleaned up real well.
Favorite thing about this bike: Probably the rear brake set up, My buddy Pat machined the rotor turning the center holes from rectangle to round and then drilled the rotor surface. then machined a brake stay, I cut down the caliper hanger by a lot, added a braided stainless line, trimmed the pedal down to a circle. It all cleaned up real well.
Next modification: Modifying it out of my garage and into the owner's hands
Other mods, accessories, cool parts, etc: two-piece headlight mount, Ductati monster front caliper & rotor w/ a Honda CR125 master cyclinder, SS brake line, hand-made brake line guide. Chain side case cover cut way down and a guard added. I fabricated the license plate/taillight bracket; Pat and I worked out the taillight, Biltwell supplied the reg tube. The tank is a Yamaha GT80 tank painted by Jaymes at Blue Moon Kustoms. Duane Ballard did the seat to the owner's specs. A ton of cleaning and polishing.
Thanks to:
Frances Bernal for the support and putting up with too much garage time.
Pat McCormick at Cutting Edge CNC, for the work & helping keep my head
on straight.
Rob Warren for being a garage mate & putting aside his own project to help
Paul Wisniewski--badge art
Duane Ballard--leather work
Blue Moon Kustom--Tank paint
Wes Drelleshack--wiring/photos
Olympic powder coating, Escondido, Ca
Thumperstuff, your SR headquarters
You can download a desktop background of The Erwin SR500, shot by Wes Drelleshak by clicking the photo above.
from chopcult.com
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