Author Topic: Yamaha SRX/RD Hybrid  (Read 440 times)

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Offline BlueR32

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Yamaha SRX/RD Hybrid
« on: November 14, 2021, 05:57:13 PM »
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!

Offline RDFL

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Re: Yamaha SRX/RD Hybrid
« Reply #1 on: November 14, 2021, 06:37:46 PM »
A good combo.

Offline 85RZwade

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Re: Yamaha SRX/RD Hybrid
« Reply #2 on: November 14, 2021, 08:26:59 PM »
THAT, friends and neighbors, is going to be super cool. :thumbs: :vroom: :burnout:
Rubber side down!

Offline dgorms

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Re: Yamaha SRX/RD Hybrid
« Reply #3 on: November 15, 2021, 10:06:19 PM »
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

Offline SoCal250

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Re: Yamaha SRX/RD Hybrid
« Reply #4 on: November 16, 2021, 11:06:02 AM »
Cool! :clap: What Yamaha should have built back in the day.
Might even deserve a 350 top end too.  :wink:
79 Yamaha RD400F     77 Yamaha RD400D     
75 Yamaha RD250B     75 Yamaha RD200B (project)
75 Yamaha RD125B     75 Yamaha RD125B (project)
89 Yamaha FZR400      05 Yamaha FZ6
91 Yamaha TZR250R    02 Aprilia RS250 Cup (sold)

Offline 85RZwade

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Re: Yamaha SRX/RD Hybrid
« Reply #5 on: November 17, 2021, 01:06:35 AM »
 :agree:
Rubber side down!

Offline BlueR32

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Re: Yamaha SRX/RD Hybrid
« Reply #6 on: November 17, 2021, 07:49:59 PM »
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.
« Last Edit: November 17, 2021, 07:53:28 PM by BlueR32 »

Offline 85RZwade

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Re: Yamaha SRX/RD Hybrid
« Reply #7 on: November 17, 2021, 10:13:59 PM »
Smart!
Rubber side down!

Offline RDFL

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Re: Yamaha SRX/RD Hybrid
« Reply #8 on: November 18, 2021, 04:15:49 PM »

Offline BlueR32

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Re: Yamaha SRX/RD Hybrid
« Reply #9 on: November 18, 2021, 05:38:12 PM »
Good to know! Thanks for that

Offline BlueR32

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Re: Yamaha SRX/RD Hybrid
« Reply #10 on: December 04, 2021, 04:31:52 PM »
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.
« Last Edit: December 04, 2021, 04:34:49 PM by BlueR32 »

Offline SoCal250

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Re: Yamaha SRX/RD Hybrid
« Reply #11 on: December 04, 2021, 08:23:25 PM »
Nice!  :clap:
79 Yamaha RD400F     77 Yamaha RD400D     
75 Yamaha RD250B     75 Yamaha RD200B (project)
75 Yamaha RD125B     75 Yamaha RD125B (project)
89 Yamaha FZR400      05 Yamaha FZ6
91 Yamaha TZR250R    02 Aprilia RS250 Cup (sold)