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Author Topic: 75 Yamaha RD350  (Read 337 times)

Offline 2_strokin

  • Posts: 5
  • 2stroke Enthusiast
75 Yamaha RD350
« on: May 27, 2018, 10:16:26 »
Hey everyone, I'm Derek. I'm coming from the 2strokeworld forum, but since it's been down for a while I thought I'd start a thread here too. So, here's the background on the bike:

I've always been into two stroke bikes, and have a number of dirt bikes and currently ride an 02 Honda CR125. I'm enamored with the idea of an RZ350, but that'll have to wait until I get out of college and a little more established. So, instead I went for an RD. I bought it in Carlisle not too far from my college, and sat in the bed for a week until I left home for break.

Untitled by Derek Shirley, on Flickr

I bought it for $1700, and felt so-so about it. It was a little rough, but considering how old the bike was it wasn't a terrible start. After more research, I learned it had a mix-match of different RD and old-school parts over the years such as: Morris mag wheels, 400 rear disc brake conversion, some mix-match chamber, junky seat/tank, and poor craftsmanship haha.

Then, I started by stripping it all down to try and get a better understanding of what I was getting myself into. Noticed a ton of crappy wiring, bubblegum welds, and wiring. At that point, I sold told the tank and seat and bought an R5 tank that was in decent shape.

20171220_122911 by Derek Shirley, on Flickr

I also scooped up a gauge cluster and headlight in great shape:

DSC02087 by Derek Shirley, on Flickr

DSC02085 by Derek Shirley, on Flickr

DSC02081 by Derek Shirley, on Flickr


DSC02082 by Derek Shirley, on Flickr

DSC02083 by Derek Shirley, on Flickr


Ended up buying this sweet original RD tank in Portuguese Orange. It's missing a cap lock, but I'll work with it.

Screen Shot 2018-04-10 at 4.14.54 PM by Derek Shirley, on Flickr

Screen Shot 2018-04-10 at 4.13.58 PM by Derek Shirley, on Flickr


Screen Shot 2018-04-10 at 4.14.15 PM by Derek Shirley, on Flickr

Screen Shot 2018-04-10 at 4.14.44 PM by Derek Shirley, on Flickr


Following this, I got in contact with Ian Halcott from Twinline Cycles who is a wizard with custom sheetmetal fab. He builds a seat that suits the lines of the tank so well. Here's what the seat will look like.


2928 by Derek Shirley, on Flickr


Twineline Yamaha RD350-1-36 by Derek Shirley, on Flickr


http://www.returnofthecaferacers.com/2016/03/twinline-yamaha-rd350.html
http://motorivista.com/1975-yamaha-rd350-twinline-motorcycles/

Now, this brings me to my current state. I'm on summer break for college, and working on saving money an acquiring parts. It's taking time, but slowly getting there.

Plans for the bike are:
- Racetech emulators
- TZ front fender
- Fork brace
- Rebuild petcock with new rubber snubbers on tank/gas cap lock
- Powerdynamo ignition
- Mikuni 28mm flatslide carbs with uni pods
- RFY rear shocks
- Jim Lomas chambers
- New wheel/suspension bearings
75 Yamaha RD350
02 Honda CR125

Offline Hurco550

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  • Posts: 3335
  • Keep er' Between the ditches
Re: 75 Yamaha RD350
« Reply #1 on: May 27, 2018, 10:42:26 »
Welcome man. I lurk over on 2sw but don't post much. Still bummed to see the site go down. Love the rd. I have a road race replica on the back burner myself. Thanks for posting up here.

Sent from my SM-G920V using Tapatalk

"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj

2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennett

Offline SF

  • Posts: 57
Re: 75 Yamaha RD350
« Reply #2 on: May 27, 2018, 11:02:53 »
Nice bike to start with. Looking forward to seeing your progress.


Sent from my iPhone using Tapatalk
72 R5
75 CB550 PROJECT
72/73 S2 RACE BIKE
72 CB350 MOM'S BIKE

Offline 2_strokin

  • Posts: 5
  • 2stroke Enthusiast
Re: 75 Yamaha RD350
« Reply #3 on: May 27, 2018, 11:07:04 »
Thanks y'all. Yeah, I'm bummed on 2SW, too. It had a wealth on info on there... Hopefully it'll be back.
75 Yamaha RD350
02 Honda CR125

Offline Sav0r

  • Posts: 549
    • ChrisLivengood.net
Re: 75 Yamaha RD350
« Reply #4 on: May 27, 2018, 12:10:16 »
Fingers crossed they get it back up. It's an unbelievable resource. I generally search it via google and for about my last 25 issues have found the answer in about 5 minutes.

Anyways, I recognize that bike. Sounds like you are on track to get it squared away.
Sav0r the adventure.

Visit www.chrislivengood.net to get more information on my RD350 dubbed Mia Wallace as well as my other projects and snafus.

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Offline 2_strokin

  • Posts: 5
  • 2stroke Enthusiast
Re: 75 Yamaha RD350
« Reply #5 on: May 28, 2018, 17:46:10 »
It seems this has happened once before from what I can gather off a prior thread on here... I wonder what happened. Either someone not paying the hosting fee or whatever. It confusing because there seemed to be a decent amount of traffic there.
75 Yamaha RD350
02 Honda CR125

Offline kar1zma

  • Posts: 13
Re: 75 Yamaha RD350
« Reply #6 on: May 29, 2018, 11:11:56 »
great project there
im starting one of my own actually

bummer about 2stroke world
thats where i met chuck quenzler and im getting all the engine work
etc etc with him.

i need to solve the wheels problem. in india the rims are all drum based
and for the beast im building i need discs

what wheel setup do u suggest.

Offline 2_strokin

  • Posts: 5
  • 2stroke Enthusiast
Re: 75 Yamaha RD350
« Reply #7 on: May 29, 2018, 22:08:57 »
Spoked wheels would probably be the lightest... Look on eBay for rd hubs and choose the rim of your choice.
75 Yamaha RD350
02 Honda CR125

Offline JustinLonghorn

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Re: 75 Yamaha RD350
« Reply #8 on: May 30, 2018, 11:34:26 »
Rd/XS hubs with FZR rotors and calipers.
I'm going to eat your brains and gain your knowledge.

Into The Sunset, CB750 build

TT500 the Animal