1994 RVF400R Build Project

Perfection may take years, even decades, mike. what was the motto engraved upon the NR750 ?

 

I know it takes at least 3 years......and counting.

 

I don't think it ends until you sell the bike. lol
There will probably be a few more little things down the road.

 

Eventually, I'll have to add an NSR250 to it, or maybe an R7. Then it might be done.

 

How many R7's were made? I vaguely remember it was a very small run on those 750's. I miss that class of bikes.

 

The new version, not the original.

https://www.yamahamotorsports.com/supersport/models/yzf-r7-world-gp-60th-anniversary-edition

 

I just read up on the new R7. So they changed the engine from an in-line four to a in-line two. Seems to be a good starting price for the bike. You can definitely get it weighing in around 375 I bet. 416 wet stock is not bad. I want to read some reviews on the differences between the two engines and how they feel.
Thanks

 

The wildest thing about it, any recent 600cc supersport will outperform a CBR900 or 929. One of my tuning folks is a 900RR guy, tuned a lot of them and raced them, and even he said a modern 600 is no contest.

 

Just to clarify, the new R7 is an all new bike from the ground up and does not share anything with the homologated 750cc race-bred version which it derives its namesake. Not to detract from its decent looks and affordable appeal, it is an entry level bike whereas the OG R7 was solely produced as a street motorcycle in limited numbers so it would be eligible for the premier superbike class of its day.

 

Original R7 was a homologation special. It was basically built and sold in a lot of 500 units to compete in WSBK and the Suzuka 8 Hour which had a production rule in place. The new one is a good looking streetbike with decent performance and a nice price tag. For the price, you could do a lot to it and still be ahead. A port/polish, deck the head for a compression bump, degree the cam, fuel tuner, upgraded suspension and sticky tires and it would be more than enough.

 

The guy in that video said he came to the test expecting to be underwhelmed but was just the opposite. I imaging the great torque really makes up for the HP.
I have tracked some 600's through the years. I had to learn to really ring the neck of the R6, it was a real dog unless you were hitting the stratosphere in the RPMs. But learning to keep my revs high and I really got a kick out of the little screamer. I was so use to my 1kRR and the huge torque band it was tuned to made me really dog the R6 at first.

 

Or find a used R6 for a good price and let it rip...........lol
I really would like to have a newer 1k bike with all of the electronics. I have done some track days with a friends R1 that is tricked out. It took me 2 sessions to get use to trusting electronics but on the 3 session I was running the same times as my 1k which has about everything you can do to it, full Ohlins suspension, full Ti Akra exhaust, Brembo brakes and clutch, wheels and slicks, chipped and dyno tuned etc. But the electronics are a game changer. Old dog new tricks. By the end of the day i was running my best times at my local track.

 

You don't need electronics on a moto with less than 125hp. JMHO. That stock R7 is putting out the same HP as the RVF 428 and I'll know this week what the weight differential is. I do like fuel injection, however.

 

I know of one I need to take some pictures of for you.....I'll see it this week.

 

I got the clutch switch all dolled up today, so that is done. The wires are now soldered directly to the switch with a WeatherPack waterproff connector to the harness so it can easily be disconnected to remove the clutch perch. Just a better overall job, compared to using the supplied connectors which wouldn't stay connected.

When I got home, I started doing some measuring and there is no way I can fit clip on 1.5" risers on the RVF. Been chatting with Rick Oliver all day about it. Rick was nice enough to cancel the longer brake and clutch lines and told me the way to go on NC30's and NC35's was to get 2005 and newer GSXR 1000 bars. He sent me some pics of them mounted on his NC30 and told me he puts them on all his NC30's. They have about 15mm of rise over the OE RVF clip ons and the angle is a little more shallow, making them a lot more comfortable. They also won't interfere with the upper cowl stay, gauges, or fairing. They also don't require new cables and brake lines.

Rick convinced me, so I went to EBay and found a guaranteed straight set of 2005 GSXR 1000 bars for $90 in excellent condition. If you bought them new, they are $224 A SIDE! The seller is located in Mesa, AZ so I should have them by Friday of this week. Another benefit Rick mentioned - is they have the indexing nub cast in, so getting them aligned will be simple. I will probably have to drill holes to locate the RVF left switchgear, throttle, and run/stop switch, but that's not a problem. I'll get them vapor or bead blasted and test 'em out.

Thanks to Rick, I saved about $400 in parts. He was also completely onboard with ditching the faux air ducts to make more room under the bubble.

 

Coming out of corners on an R6 electronics are definitely nice. Not worrying about a big high side! The electronics on the R1 took a leap of faith. Well little leaps at a time. Being able to nearly pin it at the apex is really fun. On my no electronics 1Krr if I feel the rear begin to spin coming out of a corner it was pucker time and hold the throttle hoping to just lay down a nice blackie and not splatter me and the bike.

 

i believe the original R7 developed some serious engine problems, possibly even a recall ?

 

We appear to be talking about two different types of riding, track and street.

 

Probably so. You are not going to do both with the R7?