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#1
Haus of Projects / Re: Yamaha YA-1 Resurrection
Last post by teazer - Today at 05:12:16 PMCool project. It looks so much like a BSA Bantam DS1 or the Harley Hummer or DKW125 on which those were based after WW2. I don't suppose any parts would interchange if they were available.
#2
Show Off / Re: lunchtime swapout
Last post by 85RZwade - Today at 03:27:49 PMGreat fringe benefit! The only stuff I'm storing at work, nobody knows about 
#3
Show Off / lunchtime swapout
Last post by m in sc - Today at 03:13:48 PMfor those who are lucky enough to be able to store bikes at work like i am... in goes the 67.. out goes the 67. 
YL1 on way home for a bit of maint & nos parts.
YL1 on way home for a bit of maint & nos parts.
#4
Show Off / Re: Not this forums typical 2 ...
Last post by Silky - Today at 10:36:43 AMQuote from: oxford on April 17, 2024, 09:05:16 PMQuote from: Silky on April 17, 2024, 08:44:23 AMAny chance you could share the drawings please?
See if this works. If not just google Boll aero plans.
https://modelenginenews.org/plans/BollAero18.pdf
That's fantastic, thanks so much
#5
Turning Wrenches / Re: VM28 carbs
Last post by m in sc - Today at 10:31:33 AMyes they will work but get genuine ones, stay away from ebay or amazon specials.
fwiw, summitracing has them for about 106.00 https://www.summitracing.com/parts/mku-vm28-49 but then youd have to set up for oil injection, jet, etc...
or, you can get the whole shooting match ready to go, jetted, fresh cables, etc, no guess work from john at economy.
https://www.economycycle.com/shop/yamaha-rz-350/fuel-and-airintake-yamaha-rz-350/carburetor-rebuild-kits-parts-related-fuel-and-airintake-yamaha-rz-350/carburetors-yamaha-rd250350400r5ds6ds7-parts-carburetor-rebuild-kits-parts-related-fuel-and-airintake-yamaha-rz-350/replacement-rd250-350-400-r5-ds7-carburetors-mikuni-vm-round-slide-series-28mm-carburetor-pair-includes-jetting-and-throttle-cable/
fwiw, summitracing has them for about 106.00 https://www.summitracing.com/parts/mku-vm28-49 but then youd have to set up for oil injection, jet, etc...
or, you can get the whole shooting match ready to go, jetted, fresh cables, etc, no guess work from john at economy.
https://www.economycycle.com/shop/yamaha-rz-350/fuel-and-airintake-yamaha-rz-350/carburetor-rebuild-kits-parts-related-fuel-and-airintake-yamaha-rz-350/carburetors-yamaha-rd250350400r5ds6ds7-parts-carburetor-rebuild-kits-parts-related-fuel-and-airintake-yamaha-rz-350/replacement-rd250-350-400-r5-ds7-carburetors-mikuni-vm-round-slide-series-28mm-carburetor-pair-includes-jetting-and-throttle-cable/
#6
Turning Wrenches / VM28 carbs
Last post by gargantua350 - Today at 10:13:57 AMHello All,
How are the new VM28 carbs? I have seen them for sale in various places. Mine are worn out and has bowl leakage that couldn't be solved with new gaskets. I think they are warped. The slides seem completely worn out.
My question:
with new carbs (vm28), Is the procedure for the DF mods the same as in the original carbs? would I effectively get the same results? Would it be better to just go with flat slides? The bike btw runs great. It's just these minor things I'd like to fix. any opinions are appreciated.
set-up:
stock RD350 motor with Vitos crank
ProX pistons on std bore
Cheap cylinders from ebay
spec 2 classics
UNI air filters
HPI ignition at 1.8 mm BTDC
Main jet - 190
Needle #2 position from top
Pilot - #30
2.5 slide
1 turn out on air screws
How are the new VM28 carbs? I have seen them for sale in various places. Mine are worn out and has bowl leakage that couldn't be solved with new gaskets. I think they are warped. The slides seem completely worn out.
My question:
with new carbs (vm28), Is the procedure for the DF mods the same as in the original carbs? would I effectively get the same results? Would it be better to just go with flat slides? The bike btw runs great. It's just these minor things I'd like to fix. any opinions are appreciated.
set-up:
stock RD350 motor with Vitos crank
ProX pistons on std bore
Cheap cylinders from ebay
spec 2 classics
UNI air filters
HPI ignition at 1.8 mm BTDC
Main jet - 190
Needle #2 position from top
Pilot - #30
2.5 slide
1 turn out on air screws
#7
Turning Wrenches / Re: Pro-X piston ring question
Last post by Striker1423 - May 21, 2024, 10:50:32 PMI put one on my RD250 top end when I first rebuilt it. Never gave me trouble, but ditched them on my next set after taking with Chuck as well.
#8
General Chatter / Re: RIP Frame Maker
Last post by svgarage - May 21, 2024, 11:23:33 AMPerfect! Thanks for bringing up that video, Ken.
#9
General Chatter / Re: RIP Frame Maker
Last post by kpke - May 21, 2024, 08:57:40 AMThat was this ride. The Frame Maker show and tell begins at about 8 minutes.
#10
Turning Wrenches / Re: Pro-X piston ring question
Last post by SoCal250 - May 20, 2024, 08:40:56 PMOne of Chuck's recommendations from 2019: "Another tip on Pro-X pistons kits is throw the 2nd ring wavy expander in the trash, don't use it!"
From the many discussions over the years about these, now every time I hear about a ring expander I always think of Chuck saying "toss that ring expander where it belongs, in the garbage!" It's burned into my memory now.
From the many discussions over the years about these, now every time I hear about a ring expander I always think of Chuck saying "toss that ring expander where it belongs, in the garbage!" It's burned into my memory now.