[moto] "roland sands style" yamaha ysr 500

[ALEX GAROLI]

Hi everybody, this is the continuation of the JUNK YARD PROYECTS thread, It got really messy so I will separate the proyects, this is proyect one, Ill paste the original information and i will add the recent work:

Proyect number one: TAMIYA Yamaha 500 Grand Prix-Kenny Roberts

My model was very good assembled, in a little diorama, but with year it began to fall apart:

Tires began to crack:

When it was really broken, I used some big parts for other bike:

These are the remainings:


Do you know Roland Sands KRV5? It uses a Moto GP engine, and KR stands for Kenny Roberts, so I decided to turn the 500 gp into a "Roland Sands" style bike, using the 500cc engine and tires, all rest has to be scratchbuild so is going to be hard:

I was drawing on a image of the 500 gp to see if engine matches geometry:

Then my final model is more or less going to look like this:


Im getting all styrene tubing I can, over here is hard to find it, I need it soon to make the other bikes frames.

Y finally began the other bikes frames, I was in a 7 eleven and I saw the coffe straws, there was like 10 of those, so I got them, they have the right diameter, they are really hard to make a frame, It was really hard to find the rigth materials because here scale model culture is not very popular.

Im using a reference picture to bend the tubes (straws), and the original frame to determonate width



The Roland Sands original bike doesnt have front brakes, but Im thinking adding them to mine, cause I like this bike to be a open track day one, any way It has slicks.

Making the frame is not so hard, some bends, some glue, some cuts, some putty, the difficult par is to aligne the frame, It means the right distance from the rear axle to the gearbox, so the chain fits correctly, the engine attachments are goning to be the same, Im going to cut them off from the original frame, but I have to calculate the right angle of the engine so the exhaust tubes fit the frame correctly, this is a 2 stroke bike so I have to use the same exhaust tips.

Im exited this thing is beggining to take shape, I cant wait to see the frame painted in yellow.

Im working right know on the "Darla" s frame, I hope tomorrow Ill post some pictures, the frame is longer, are simpler.
Hey I noticed the diameter difference betwen the FZR and Yamaha 500 tires, the grand prix bike tires are much more wide, almost 1/4", is that alike in the reality or is a scale mistake?, two bikes are Tamiya.

Here is the rest of the frame construction, hasd to aligne, I cutted off the original engine supports and added them to my hand made frame, so I can have the right width:






Some primer and a little putty:






Testing the exhaust pipes fitting:


Now I have to detail, sand more, add the rear axle holders, and begining building the rear fender and the fuel tank.

[ALEX GAROLI]

Hi, its been a while since my last post, I didnt do anything to this bike for more than a year I think.
but last week and last one I was very active, so here is the progress.

Basic frame almost finished:


Ready to test engine and pipes clearance:

exhaust pipe is to low, I have to cut it:

The old frame an the styled one:


I had to use the center of the disc to mantain aligned the rim in the axle:


And now one of the harder but fun parts, the body parts, first in I get the shape in paper, then in thicker paper to correct errors, and then in plastic, you have no idea how much I had sanded, primer, sand, primer, sand...

[ALEX GAROLI]

More...

[ALEX GAROLI]

And more work:

[ALEX GAROLI]

Now radiator housing:








Number plate:



Radiator support:

[ALEX GAROLI]

Now some frame details, exhaust holders, rear fender, peg supports, stamd pegs, rear caliper, etc.




I hope soon I paint the parts, Im working in making the exhaust pipes welds, handlebars, and detailing engine.

[decals]

Hello Alex, welcome back, you are doing a fantastic work

[anton61]

Very very good job Alex! Thank for your didactic pictures.
Anton

[ALEX GAROLI]

Now time to make the handlebars, styrene tube and grips from other bike:






Now the seat, it is bicycle type, I used 2 plyes of 3mm stryrene and a lot of sanding, some dremel work too:






A rivet is added for detail and finnaly brown leather paint, some shades too:


Now seat support:

All scratch parts finally finished, I can bealive it took me more than a year to make all this little pieces, but now is the more fun part, is like I just opened a Tamiya kit, so time to paint and glue parts:

Here with the doned parts from the yamaha ysr 500:

Finally testing all parts fitting, the bike looks amazing!!!



Here is the finnal paint schemme:

[ALEX GAROLI]

Oh I forgot to build the radiator!, I only made the radiator housing, well tomorrow I will do it, I painted the parts white so the yellow is going to be brighter:

This is my first time doing wleds, I usen testor putty, O think they are really ugly but, what can I do, my forst time:


Alclad 2 chrome for the engine and exhaust pipes:

And some blue, red and gold for the welds, colors are really intense so Im going to do some overpainting with chrome:

Nice contrast:



Testing seat:

More images:

[ALEX GAROLI]

Hi, after a while, here is some advance, this took some time because ti paint, I have to wait from layer to layer diferent colors.
Here is the base color:

The second color:

Now the decals, I already made them, but I will post teh process, due the decal paper is really transparent, and I dont have a printer that prints white.
1.-Y painted some decal paper in white ando some in black:

2.-I printed the background of the decal (in this case rsd logo, stands for roland sands design), and draw the shape im going to use:


3.-I applied the decal on the white painted paper:

4.-Now I cut the piece and applied it on the black painted paper:

5.-Now I cut the piece again, leaving a black edge, and I have my final product

6.-I put the decal on the model, with some tamiya mark fit softener, I was surprised this softener works with the painted paper really well:

The decal looks blurry because I made it really quickly, just for an example.
Here are the real ones with the clear coat on, so at the end, they are a fory layer decals, bacause of the logos and number 1:

I have used this technique a lot with adhesive vinyl, but the result is very thick decals, even with thick clear coat on, example:



I masked the model to paint the white areas, but later I decided to make the decals described:


I discovered with some tests, that adhesible viniyl is good to mask, the shapes result really sharp, but only if you now you have good adhesion in the base paint.

[ALEX GAROLI]

Now the radiator fabrication, I used diferent styrene calibers and some fabric net:


Fitting:


Painted:

More fitting:

This is not the final grille, it is just testing material:

I removed the 15 years old paint, eassy off worked well after 4 applies:

I used plastic tubing and really thin wire to mahe the hoses:


Pieces almost finshed, I use some CF on the exhaust tips:

Now finally comes the fun, the assembly:

I still have to make some pieces, pegs, shift linkage, brake pedal, some more cables and hoses, but thas a quik job.
Here are all the patterns I had to make:

Radiator housing:

Number plate:

Gas tanks:

Rear fender:

Cant wait to assembly the model, but I have to wait some days to polish and wax the paint, so Im spending my time in a fun quick build.

[decals]

WOW fantastic work

[anton61]

Wonderfull job Alex! Thanks for detail of your work!
Anton

[ALEX GAROLI]

Well, lets begin the assembly, this is the radiator housing grille:




The forks:


I added a chain guide so the frame doesn't get scratched:

Clutch cover:

Testing fits:


Engine, I added fuel lines, spark plug cables, and water hoses:


I wanted to use some Hiroboy clear tube, but I is too thick, so I used a clear material used to make plastic necklaces:


Coils and fuel pump:

Acelerator cables:




Nice engine!



Ready to glue engine, no turn back from here:

Exhaust and rear end assembly:

Conecting cables: