Messages

I'm so done with this 50 year old tech. The Vape is calling me. Anything I should know before I pull the trigger?

Get the heavy duty bolt and washer as well. And take out all the bolts on the vape and blue locktite everything

Surging or jerking on deceleration with closed throttle is caused bu a lean air screw setting or lean pilot jet.

There is a lot of conflicting information on the internet about pre-ignition and detonation.

Wait until somebody tries to tell you that you have pre-dotonation going on

Zeeltronic sell coils too, that Im pretty sure are exactly the same as Nology and PVL

looks really clean, but that screen is another level of ugly. Where do people even find things like that?

The finish on those looks really good.
Bolting on billet parts is a special kind of satisfaction

MJ Corse will make custom sprockets

Tony Dukas is in Florida and Wicked Motorsport in California

$800 for Vape. OUCH!

.

Gotta pay to play

Turbo RZ for sale. Anybody want an unusauL project with a weird looking turbo setup?

[Where do I find an offset front sprocket?]

Hi!

Finally found the perfect project bike to realise my 2 stroke dreams. Already have a fully built XS650 but I really want to build a bike myself. I'm craving a light and nimble 2 stroke!

The bike is an R5 unknown year but the frame and engine nr is R5-040824 if that's any clue?
Picked it up for quite cheap expecting it to be in worse condition but was pleasantly surprised to find fresh pistons and cylinders! Apparently someone already started working on it.

This bike is the perfect base for a restomod build. Here's what I have planned.

Chassis:
Wheels, brakes and forks from a DERBI GPR 125 -07. There are plenty of these bikes being sold for parts here in Finland and very cheap! The 44mm USD front should fit quite effortlessly as the stem diameter and length corresponds almost exactly with the original R5. Ideally I'd want to do lighter than stock disc brake 18" wire spoked wheels but I can get the Derbi 17" really cheap and they look quite interesting.

Challenges:
Chain alignment is my biggest concern. Where do I find an offset front sprocket? Of course I'll need to make some spacers, the rear sprocket carrier will need to be machined down and holes deepened. Looking to do a 520 conversion using a 39tooth blank rear.

Engine:
First I'll clean the ports up a little bit and reassemble to get it running. The oil tank is missing so I'll probably plug the original system. Premixing has been standard procedure 20 years on the mx track already! I'm prepared to put fresh crank seals if needed. Also looking for a 6speed gearbox.

Ignition:
Points system looks really tired, gonna try to revive it.
Vape CDI feels extremely tempting (getting rid of the battery) but a bit overkill price tag. Newtronics on the other hand, that might be the way to go!

Carburators:
The previous owner also sold me some new 28mm PWK replicas. ZSDTRP is the brand. Any recommendations on jetting?

Exhaust:
Test run with original pipes, then fabricate my own.
I'm stupid enough to believe I can learn how to weld my own pipes. I know a guy that has made his own pipes based off of the old Yamaha blueprints for track bikes. Waiting for the files so I can have the sheet metal cut out and start rolling.

Any and all help is much appreciated! Looking forward to update you on this project!

MJ Corse make cystom sprockets and are in Spain, so kinda close to you

I bought an arm from a newer model SV 650 that I was planning on using with a 150 or 160 tire. But the GSXR 600 arm I had was too much temptation. I already have a RZ motor in the 73 frame whick moved the sprocket over 1/2". With the aircooled motor you would need an offset front of over an inch

How wide do you want to go? Wider rear tires on Rd's or RZ's really seem to upset a lot of people. Especially on facebook groups. You can get a 130 rear in a AC swingarm if you grind down the welds on the gusset plate.
I think the Canadian model RZ's came with the box section swingarm, but regardless RZ arms need 6mm removed from the pivot to fit an aircooled frame. And then you can only go 130 or 140 wide before the tire hits the gusset plate on the top of the arm.
Wicked Motors is selling an aluminum RZ arm that will take up to 160 rear tire, but not cheap.

I also got tired of the look of the skinny rear tire, and I am finishing off fitting a 180 rear tire on a Ducati spoked wheel with a GSXR swingarm on my 73 RD along with redoing the tail / seat that was cracking

Kinda looks like a mess to me, just way too much going on (I'm a simple guy, mostly).

It's for the (rich) people that crave excess.

"When only too much is enough..."

Gotta agree, there is nothing about it I like.
Sad part is it will be soo expensive that they will most likely end up sitting in rich peoples collections and never ridden

My Koso gauge looses the plot when it is hot and sunny and becomes unreadable. The numbers turn into unreadable hieroglyphics with lots of blank spaces.
Anybody else get this?