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Author Topic: Yamaha rd350 Road Racer Liquid Cooled!!  (Read 53456 times)

Offline jpmobius

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Re: Yamaha rd350 road racer
« Reply #140 on: Aug 14, 2016, 23:10:50 »
This is a GREAT idea!  Indeed, I have done this very thing myself.  Do yourself a favor though - make the center point of all your adjustability  based on the stock kinematics.  In other words, do the simple step of measuring the stock crank arms and levers and build your trial set with these ratios as your mid point.  I expect would likely discover as I did, that you can spend a lot of time fooling around with adjustments if you just do a dart throw.  If you start with a known scheme it is much easier to make changes with a purpose.  You may also find that having the adjustability has an even more valuable use than getting the function to be good:  Having good adjustability likely will make it possible to alter the ergonomics for a much more comfortable and therefor much more functional set up.
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline Hurco550

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Re: Yamaha rd350 road racer
« Reply #141 on: Aug 17, 2016, 22:36:18 »
Got my rearset parts back from my waterjet guy (thanks dad! ) the actual mounts are probably, er hopefully,  permanent items, but as stated before, the levers with all the holes are just for mockup. Once I get the angles and lengths set, I'll get a set cut at a permanent angle. Also, BMX pegs are mockup only (thanks Cory) I'm really planning on trying to incorporate the stock rubber fold up pegs, and maybe try to make it look like a "factory Yamaha" type setup that you "could have gotten from the dealer" back in the day.







"If you want safety and sanity don't mess around with choppers to begin with and don't come crying to me for recommending something that broke down the line. You're going to be the "builder" so use your own judgment and build to you own personal levels of safety and sanity." - Chopper Handbook
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline irk miller

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Re: Yamaha rd350 road racer
« Reply #142 on: Aug 17, 2016, 22:40:24 »
I like the BMX pegs.  I want something like that.  Not sure what bike, but it's a neato idea.

Offline ridesolo

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Re: Yamaha rd350 road racer
« Reply #143 on: Aug 17, 2016, 22:52:16 »
Lookin good, buddy!
“Fight on and fly on to the last drop of blood and the last drop of fuel, to the last beat of the heart.”
— Baron Manfred von Richthofen

Please check out:  http://www.VetTix.org

This is cooking away out in the shop:
'75 Honda CL378: http://www.dotheton.com/forum/index.php?topic=56547.0

This is an on-going Non-Motorcycle saga:  http://www.dotheton.com/forum/index.php?topic=71319.0

This one is FINALLY done: (!)
'70 Rupp Roadster: http://www.dotheton.com/forum/index.php?topic=67459.0

Offline Hurco550

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Re: Yamaha rd350 road racer
« Reply #144 on: Aug 17, 2016, 23:04:44 »
I like the BMX pegs.  I want something like that.  Not sure what bike, but it's a neato idea.
I like them too, I just like the idea of fold up pegs more haha cheap insurance if I get this thing a bit low once in a while lol
Lookin good, buddy!
Thanks Cory!
"If you want safety and sanity don't mess around with choppers to begin with and don't come crying to me for recommending something that broke down the line. You're going to be the "builder" so use your own judgment and build to you own personal levels of safety and sanity." - Chopper Handbook
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline yorkie350

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Re: Yamaha rd350 road racer
« Reply #145 on: Aug 18, 2016, 06:32:51 »
Great idea with the rearsets turned out nice plenty of adjustment to play with and ime a +1on fold up pegs too like you say cheap insurance in the twisty bits
Life's too short to go slow at anything !  unless your re-building ya ride !!

 cb350f '72 café racer 
 cb550f '78 Hailwood race rep

Offline Hurco550

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Re: Yamaha rd350 road racer
« Reply #146 on: Aug 23, 2016, 17:19:03 »
Did a little work on some knicks that were on the front high shoulder rim.




A little dremel work too prep for welding


And tig welded in some matl to file back down.

"If you want safety and sanity don't mess around with choppers to begin with and don't come crying to me for recommending something that broke down the line. You're going to be the "builder" so use your own judgment and build to you own personal levels of safety and sanity." - Chopper Handbook
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline Hurco550

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Re: Yamaha rd350 road racer
« Reply #147 on: Aug 24, 2016, 15:14:25 »
Not perfect, but with some filing, dremel work and wet sanding, they it is fine. Not bad for a 15 dollar high shoulder rim and some elbow grease.
"If you want safety and sanity don't mess around with choppers to begin with and don't come crying to me for recommending something that broke down the line. You're going to be the "builder" so use your own judgment and build to you own personal levels of safety and sanity." - Chopper Handbook
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline JustinLonghorn

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Re: Yamaha rd350 road racer
« Reply #148 on: Aug 25, 2016, 07:13:48 »
Neat-o
I'm going to eat your brains and gain your knowledge.

Into The Sunset, CB750 build

TT500 the Animal

Offline Hurco550

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Re: Yamaha rd350 road racer
« Reply #149 on: Aug 29, 2016, 19:43:10 »
Kinda in a lull on this one. I've been trying to sell anything I can to raise money for this thing so I can buy some parts and keep this rolling.

New crank (or rebuild) is a must, pretty much set on a new drop in unit from vito

Pisons and bore, planning on running pro x modified banshee.

Gonna buy a used set of banshee manifolds with a cross over tube. Having a hard time finding specs if my stock carbs will be the same size though.

Y boot with k&n filter

And, I opened up my stator cover to see this

Super crusty.

Really contemplating buying this and being done with it instead if trying to piece together a whole different used system. Any of you guys familiar with this system or are currently running it?

https://www.economycycle.com/shop/yamaha-rd250350400r5ds6ds7-parts/mzb-cdi-electronic-igntion-for-yamaha-rd250350400r5ds7-street-version/
"If you want safety and sanity don't mess around with choppers to begin with and don't come crying to me for recommending something that broke down the line. You're going to be the "builder" so use your own judgment and build to you own personal levels of safety and sanity." - Chopper Handbook
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet