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Author Topic: r5 vs rd  (Read 5546 times)

Offline neckyzips

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r5 vs rd
« on: Nov 29, 2012, 12:32:27 »
ok, so i passed up rz350 long ago when i was a kid working at the bike shop, the poor thing sat there for 3 years, finaly sold for 400 bucks running and fully faired.
ive kicked myself in the ass for years for not picking it up but was striving for the newest fastest sport bike then.

anyway, the smoking bug has hit, there is a decent r5 local for not too much, but should i hold out for the rd/rz for a hot cafe build?
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Offline cafematty

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Re: r5 vs rd
« Reply #1 on: Nov 29, 2012, 13:55:50 »
A few differences....

R5 is piston port - RD  is reed valve
R5 comes with a 5spd tranny - RD comes with a 6spd

What area are you in? I have an R5 that I'm probably not going to do anything with anytime soon..
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Offline neckyzips

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Re: r5 vs rd
« Reply #2 on: Nov 29, 2012, 14:50:54 »
north carolina, greensboro.
so the r5 wouldnt be as  hot as the r but still fun
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Offline cafematty

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Re: r5 vs rd
« Reply #3 on: Nov 29, 2012, 15:30:44 »
Both can be little monsters... I'm a bit new to 2 strokes as well.. but I'm realizing quickly why people love them. I have an RD400 that scares the beejesus out of me... pretty nasty little bike.

The RD350 is going to have a bit more potential than the R5. You also get a front disc on the RD instead of the R5's drum. This is why I'm considering selling the R5. I currently have a CS3 (200), the R5 (350), and an RD400. I like the idea of having a nice happy little family of two-smoke Yammys, but if I'm going to have a 350, I'd rather it be an RD. I see them pop up quite often on Craig's around Austin, so I figure I'll come across one that I can't pass up some day. Which makes the R5 less attractive.

It's not that I don't love it... I would just rather put that time and money into an RD.
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81 BMW R65

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Offline bradj

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Re: r5 vs rd
« Reply #4 on: Nov 29, 2012, 19:00:43 »
The rd has a better trans and reed valves and disc brakes but the cases crank anf frames are the same so rd jugs pistons and front end and you gotta a rd i would not run off a cheap r5 drag racers love them and there cheaper than a rd all and all there the same bike so take a r5 and a few hundred bucks and build a rd or just ride it the power difference is small

Offline Redbird

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Re: r5 vs rd
« Reply #5 on: Nov 29, 2012, 19:16:44 »
What Brad said...
And Matty, the six speeds only came in the 400's. But the entire gearbox will drop right in any DS7/R5/RD ;)
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Offline neckyzips

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Re: r5 vs rd
« Reply #6 on: Nov 29, 2012, 20:16:59 »
hm, well the 5 is less than a grand, suposedly running, or i can change gears and pick up an old iron head for 1800 running which would be kinda cool too, but the two stroke looks like more fun!
operational procedure #1: HIT IT!

Offline teazer

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Re: r5 vs rd
« Reply #7 on: Nov 29, 2012, 20:28:22 »
R5 piston ported 5 speed
RD350 Reed valve 6 speed in most countries
RD400 longer stroke, same reeds and closer ratio 6 speed

That's about the size of it.  R5 with a little porting makes a nice bike.
« Last Edit: Nov 29, 2012, 22:53:45 by teazer »

Offline bradj

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Re: r5 vs rd
« Reply #8 on: Nov 29, 2012, 20:33:03 »
And faster, worth more, harder to find, and liter, cheaper to rebuild,everyone wont think you beat you spouse if they see you riden a yamaha they will if your on a harley plus there way kooler

Offline S Majure

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Re: r5 vs rd
« Reply #9 on: Nov 29, 2012, 22:36:02 »
Clarification; rd350 as of 1975 has a 6 speed transmission