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Author Topic: RD400E Special  (Read 8314 times)

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Offline 85RZwade

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Re: RD400E Special
« Reply #30 on: July 26, 2021, 04:05:37 PM »
If I had a 400, I’d be your buyer  :burnout:
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Offline biggraham

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Re: RD400E Special
« Reply #31 on: September 27, 2021, 11:58:26 AM »
Quote from: 85RZwade on July 26, 2021, 04:05:37 PM
If I had a 400, I%u2019d be your buyer  :burnout:

I just used them to help justify a Daytona frame and swingarm purchase..I already have said Bassanis, Daytona mags, a 400E seat, an xs650 front end and an rz rear end :olaf:
« Last Edit: September 27, 2021, 12:04:46 PM by biggraham »
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Offline 85RZwade

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Re: RD400E Special
« Reply #32 on: September 27, 2021, 02:54:16 PM »
 :clap: I look forward to seeing that come together!
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Offline biggraham

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Re: RD400E Special
« Reply #33 on: September 27, 2021, 11:52:22 PM »
Not sure about a mono shock conversion, but the rz swingarm weighs 4.5lbs , bare, before I remove 2 inches and  anything extra..
Daytona arm weighs 12lbs
(allegedly)
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Offline 85RZwade

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Re: RD400E Special
« Reply #34 on: September 28, 2021, 09:22:04 AM »
Wow, that's an amazing weight difference. I've replaced two RZ swingarms with FZ items because I thought they were heavy! Must be a lot of steel in the Daytona 'arm.
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Offline biggraham

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Re: RD400E Special
« Reply #35 on: September 28, 2021, 01:25:58 PM »
Can't find an fz600 arm, they're 1lb lighter than an rz arm...
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Offline biggraham

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Re: RD400E Special
« Reply #36 on: September 29, 2021, 03:40:36 PM »
Scored a FZ600 swingarm on eBay, on it's way :cheers:
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Offline 85RZwade

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Re: RD400E Special
« Reply #37 on: September 30, 2021, 12:46:39 AM »
Excellent find!  :vroom:
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Offline biggraham

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Re: RD400E Special
« Reply #38 on: October 03, 2021, 01:32:30 AM »
Here it is, not too shabby looking!
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Offline biggraham

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Re: RD400E Special
« Reply #39 on: October 11, 2021, 02:58:03 PM »
Pretty sure the Daytona arm is lighter than 12lbs that I read, hoping to borrow a scale soon..

Debating punting the extra parts to get new tires, some machining and a motolanna swingarm...
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Offline biggraham

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Re: RD400E Special
« Reply #40 on: October 26, 2022, 03:24:30 AM »
Pardon the gap in this build, life's been interesting for sure!
Mismatched wheels and tires aren't brilliant, so with a little detective work, it turns out thst a gs500 wheel has same axle size, and is already a 39 t 520 chain sprocket!
I also tracked down an aluminum swingarm, so let's see if it all fits together..
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Offline biggraham

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Re: RD400E Special
« Reply #41 on: October 26, 2022, 03:31:46 AM »
Turns out they fit together beautifully, may not even need wheel spacers! It'll be great to have matching wheels, and ditch a front rotor and disc! I'll need a brake torque arm for the swinger, probably get one from economy cycle..
Wiring is pretty dire, anyone adapt a new 76/77 harness to a 78?
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Offline m in sc

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Re: RD400E Special
« Reply #42 on: October 26, 2022, 02:26:10 PM »
well isnt that nifty! very cool indeed.  :clap:
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Offline Dvsrd

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Re: RD400E Special
« Reply #43 on: October 26, 2022, 02:44:35 PM »
A MotoLanna swingarm?  Looks nice!
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Online SoCal250

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Re: RD400E Special
« Reply #44 on: October 26, 2022, 03:52:13 PM »
Quote from: biggraham on October 26, 2022, 03:31:46 AM
Turns out they fit together beautifully, may not even need wheel spacers! It'll be great to have matching wheels, and ditch a front rotor and disc! I'll need a brake torque arm for the swinger, probably get one from economy cycle..
Wiring is pretty dire, anyone adapt a new 76/77 harness to a 78?
The only difference between the 76/77 and the 78 harnesses is the addition of the headlight relay on the E model (see attached)
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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 XT225T-C  82 Honda MB5  02 Aprilia RS250 Cup (sold)
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