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75 RD "Just a simple seat swap"..yeah right

Started by Lambchopz, January 07, 2024, 02:50:13 PM

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Lambchopz

Hello all,
Hope this finds everyone having a great new year so far.

This build is done now and I've documented the progress throughout.
I've relied heavily on this forum's post's throughout the years to get the bike to where it is. For that, I am forever grateful
Hopefully my sharing will provide help for someone else one day.

So this is gonna be backwards way of doing things. Wanted to share a quick vid of the dyno session and dyno sheet of the completed bike.

I'll post up some build pics in the coming weeks

Dyno Vid Link

 




 

svgarage

Sweet! Where did you get the dyno done? Nothing up here in the Bay Area.
A goal without a plan is just a wish.   ~ Antoine de Saint ExupĂ©ry

Lambchopz

Quote from: svgarage on January 07, 2024, 03:05:18 PMSweet! Where did you get the dyno done? Nothing up here in the Bay Area.

Dyno was done at Wicked Motorsports in Garden Grove, CA. Wicked also built the engine.

m in sc

good numbers for sure, have to be happy w that.

85RZwade

I post waayyy too much

Lambchopz

Quote from: m in sc on January 08, 2024, 07:53:09 AMgood numbers for sure, have to be happy w that.

Thank you Mark. And thank you for building the bikes that help inspire this one. I'll have some updates soon.


Lambchopz

So as the title suggests, this was going to be a simple seat swap.  Pic of the bike when I bought it. Pic after rewiring, throwing new carbs, pipes, etc. on it. This is with the seat just resting on there to see how it looks. The rear part of the frame was already cut off when I bought it.

m in sc

yeah good call on the seat change. that 1st one...  :shocked:

SoCal250

I remember seeing this bike for sale, I think on Craigslist way back. I remember it because of the pipes and the light mounted on the seat hump.
Looks MUCH better now!  :thumbs: Nice numbers on the dyno too. Congrats
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)

m in sc

take a close up of the coil mount.. did they weld on a bracket?