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5ev3n
5ev3n New Reader
11/16/09 3:54 p.m.
44Dwarf wrote: Yamaha made the DS7 and RD both in 250cc DS7 is the smaller version of the R5. I mistakinly once got my hands on a DS7 and slapped it in my rd 400 frame and for the life of me could not figure out why is would not pull hard. Dyno showed 22hp at the wheel EGT were right on the money too. Change the plugs and droped on while picking it up i saw 250cc on the cyl and laughted The dnyo guy was not so impressed. untill we looked it up and saw 12.5hp in stock trim. I had pipes and bigger carbs on it. 44

I have the 72 DS7 and I run the piss out of that bike. I love it. Big RPM'd shifts into 2nd pull up the front wheel with limited hesitation. And each day, kicks up and runs. Never getting rid of it.

MitchellC
MitchellC HalfDork
11/17/09 12:40 a.m.

The DS7 has the 5 speed transmission vs. the RD's 6-speed, right?

I am still working on mine; hopefully I will be able to make some progress over Thanksgiving.

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