Description: Yes we combine shipping for multiple purchases.Add multiple items to your cart and the combined shipping total will automatically be calculated. 1966 Yamaha YM-1 305 - 4-Page Vintage Motorcycle Road Test Article Original, vintage magazine articlePage Size: Approx: 8" x 11" (21 cm x 28 cm)Condition: Good Yamaha started out in the music business in 1887, whichwill explain the crest used on their motorcycles —three tuning forks. Although the company has spread tothe international two-wheel trade, happily we can reportthat they are still making music with their 305cc roadmachine.They call the YM-1 the “Cross Country Sport 305.”This has nothing to do with bouncing over the boondocks;rather, Yamaha means this bike to be the roadburner ofthe line. They succeed admirably, producing a mediumdisplacement motorcycle for town and touring with thepower and feel of a much bigger machine.The YM-1 engine is a “big cousin” of Yamaha’s246cc YDS-3, the two showing similarity in design andrunning charactertistics. The YM-1 has bore and strokedimensions of 60 x 54mm, compared to the YDS-3’s56 x 50mm. But “big cousin” is more mild-mannered;the torque value is up about 20 percent while the displace-ment has increased 24 percent. This is explained by thecompression ratio — 7.1:1 — instead of the 7.5:1 of theYDS-3. Advantage of this is that the pistons have tosuffer less thermal loading, contributing to better wearand reliability. One may have no fear in using regulargrade gasoline, which will make up a bit for the 305’slargish appetite (which goes with a largish disposition,to be sure).' Yamaha now claims 29 bhp for the engine, which iscurious, as it has not been changed significantly since it firstcame on the market with claims of 26 bhp. The changeis most likely one of literary license to make up for therather conservative smaller figure. The power peak is at7,000 rpm and the engine pulls very strongly from about5,000 through 8,000 rpm. This wide power band, coupledto the five-speed transmission contributes to an excep-tional, yet flexible, performance. The higher torque ofthe 305 allows it to pull higher first and second gears thanon the YDS-3. Fourth and fifth gears are closer on theYM-1, the fifth speed having “overdrive” characteristicsand not being much good for acceleration until 65 mphis reached.The 305 is the latest of the Yamaha line to have theproven “Autolube” oil injection system, which removestwo bugaboos for potential two-stroke buyers — thehassles of mixing oil with gasoline at each fuel stop andthe blue smoke issuing forth when the engine is runningat less than full tilt. The rider must only check the oiltank window from time to time to ascertain that the levelis up. The oil is mixed with the gasoline in variablefashion, the gas/oil ratio being 20/1 at full throttle, taper-ing off to 200/1 at idle. The virtues of this system areits relative oil economy, combined with a reduction ofcarbon and varnish residues.The 305 is an easy starting machine, even withoutelectric starter. The novice rider need not worry aboutinvolved or ritualistic starting procedures, but has only toturn the key, flick the choke lever and kick the starter,once or twice at the most. It is necessary to let the enginewarm a few minutes or it won’t go anywhere. Blip thethrottle a few times to see that it’s warm-enough to takea torque load and then pop it in gear.We noticed that the tachometer doesn’t operate when...
Price: 12.22 USD
Location: Kingsport, Tennessee
End Time: 2024-12-25T17:02:45.000Z
Shipping Cost: 5.95 USD
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Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Make: Yamaha
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