[re tired]

I bought a pre-raced 2005 SV6550 from another racer two years ago and after campaigning it for two years in the CRA, I was struck with urge to build my own race bike. I have always loved Yamaha's (see background in pics) so when Yamaha introduced it's new FZ 07 was coming to the U.S. (MT 07 elsewhere) I decided to go for it. Since I wanted to stay in the Lightweight class this was the perfect chance when a rules change allowed it in. Here it is the day it came home, what follows is its journey to the racetrack. Since I assembled it from the crate, test drove it, then bought it, every single mile on it is mine...



The other side,

[Torchsport]

[Denny]

Nice! I sure love mine. Have fun!

[Denny]

[re tired]

Since there was little or no no race kit available for the Fizzer for much of this year, I postponed this project till the off season. As 2015 went by, things such as dedicated race glass, rear sets, pipes, brakes/brake lines and related stuff became available. I realize full well there are cheaper, easier, faster ways to get a bike on track but that's not what I was after. I could have bought an R6, safety wired it and tracked it but that would have defeated the purpose. Having enjoyed 2 wheeled fun for more than 50 years I want to learn all I can and through this process perhaps that's possible.

Here's what happened after a couple of beers...



It weighed 390 lbs on my digital bathroom scale will a little gas in the tank when I started. I'm guessing around 330ish stripped (I'll weigh it and post later). It is definitely gonna be lighter than the Suzuki or Kawasaki equivalent and probably lighter than a Ducati as well. The frame is very minimalistic as you can see. It remains to be seen how it will hold up or handle crashing. The SV is a 74 Polara wagon demolition bike.



If you know of anyone looking for unused, take off bodywork let me know...

[POE]

Very excited to see how this goes!

Another bike with a welded on sub-frame? I don't get why are manufacturers doing that. I hope it's plenty strong, or at least easy to bend back into place.

[re tired]

POE, on 28 September 2015 - 05:57 PM, said:

Very excited to see how this goes!

Another bike with a welded on sub-frame? I don't get why are manufacturers doing that. I hope it's plenty strong, or at least easy to bend back into place.

Since you bring up an interesting point, some initial thoughts;

Then entire frame assembly only costs 500 bones from Yamaha. The reason for the welded sub frame is obviously cost. Close examination of the bike's construction reveals it is very lightly built (not flimsy or fragile) compared to others. The swinger and related mechanicals and linkages; for instance, looks delicate compared to the SV. Parts, tabs, brackets and hangers are thinner, lighter, or of differing materials to save weight. The engine is a stressed member of the machine instead of merely being hung underneath the frame.

The bike is very well engineered. For instance, the 'tail' really only serves to support the taillight assembly. The battery is under the riders seat. The ECU is mounted forward, along the right side of the engine. The reg/rec along the left side of the engine. So what?, there is nothing in the tail section so if it were damaged or bent who cares? All hail crowbar racing!

The four piston opposed brakes are not leading edge but are better than the 2 piston pin slide units of the SV era bikes. Nice upgrade.

The wheels feel lighter than SV wheels, maybe even a little lighter than Ninja wheels. I'll weigh them later.

There is no fairing stay, obviously, but the steering head is tubular so adding one is easy.

One huge problem; however, being a new model there are virtually no spares/take offs/crashed or used parts available yet anyway. (Second set of wheels is very expensive)

The FZ is noticeably narrower/thinner than the SV. It measures 12.5 inches between your ankles, my SV was 15 inches.

[POE]

Very nice observations. Keep 'em coming as you discover.

[re tired]

Outta here!

[Champ]

I'm jealous of the 180 tire selection, although on a bike with this HP I'm not sure that's a HUGE advantage. It's obvious on the SV's when you put a larger wheel on - the whole rear assembly ends up heavier and drive out of corners is reduced.

re tired, on 28 September 2015 - 07:02 PM, said:

The FZ is noticeably narrower/thinner than the SV. It measures 12.5 inches between your ankles, my SV was 15 inches.

I'm curious how wide the motor is down low - do you feel it will be prone to scraping when lowsiding?

[Champ]

Are you planning to stay in SS or going to build it to SB?

[re tired]

Champ, on 28 September 2015 - 07:55 PM, said:

Are you planning to stay in SS or going to build it to SB?

Wife made me come in for the night but I'll measure things up tomorrow. I plan on building to super sport spec. This thread is gonna make cheating virtually impossible however. I'll have to sensor some photos as we go so no one knows what the old man is doing behind the curtain.

It is unusual at the bottom. I'll know more when I get the plastics and sliders on it but I don't think it will be any worse than the Suzi's when it goes over.

Edit:
The plans are modest for this build (read I'm broke),
Penske double clicker rear
Andreani carts in stock front
Flashed ECU w/quick shifter
Air filter and exhaust (stock air box)
And the usual stuff like Clip on's and rear sets, bodywork and sech.

[Torchsport]

If ya ain't winnin', ya ain't cheatin'...

[Yamanube]

Cool build, excited to see this one.

[Sean298]

Pilot road 3's as an OE tire. Interesting.