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Yamaha SRX/RD Hybrid

Started by BlueR32, November 14, 2021, 05:57:13 PM

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BlueR32

Hi 2SW! Just re-joined the forum after a couple of years in the wilderness after I sold by GT750 & RD400 projects to fellow forum members. Thought you might be interested in this, my latest project. Picked up a 1987 SRX250 roller a while back. Brought back a RD250 motor from Barber VF this year and decided to do the transplant. So far so good!

RDFL


85RZwade

THAT, friends and neighbors, is going to be super cool. :thumbs: :vroom: :burnout:
I post waayyy too much

dgorms

I had the same thought a few years ago, posted it on the old forum. Then someone came along and offered me way too much for the SRX! Looking forward to this thread.
rz,r5,ds7,srx,fzr400rr,vfr,cl77,s90, F-7,CL 77, CA-77,ad infinitum

SoCal250

Cool! :clap: What Yamaha should have built back in the day.
Might even deserve a 350 top end too.  :wink:
75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

85RZwade

I post waayyy too much

BlueR32

#6
Started dismantling the RD250 motor. Should have loosened the drive sprocket while still in the frame but got ahead of myself. That thing was on as tight as a camel's arse in a sandstorm so had to channel my inner McGyver. I didn't want to risk damaging the casings so I backed the motor up to the vice and used an old chain I had lying around. Applied some heat to the sprocket & nut and off she came.

85RZwade

I post waayyy too much

RDFL


BlueR32

Good to know! Thanks for that

BlueR32

#10
The RD250 motor came mounted in a chopped frame. So I was able to graft the bottom section with the front engine mounting points onto the SRX frame. Here is after cleaning up the initial tack welding and adding some bracing around the headstock.

SoCal250

75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

50gary

I'm always amazed the amount of brackets and tabs on a frame.  Looks like a good start,
I like cross-pollinating.  Basic hot rodding at it's best.
  Cheers, 50gary

BlueR32

First experience of vapor blasting and I am well pleased (in the words of Allen Millyard)

pidjones

Where is your vapor blasting being done?
"Love 'em all.... Let GOD sort 'em out!"