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Vecchio 10-12-09, 08:13 AM   #1
ALEX GAROLI
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Registrato dal: Dec 2009
residenza: SAN LUIS POTOSI, MEXICO
Messaggi: 75
ALEX GAROLI è un newbie...
predefinito [moto] "roland sands style" yamaha ysr 500

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.
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