MaxSwell

50 minutes ago, GreginDenver said:

Yes, the reality of the "pulsing rotor" situation on a car or motorcycle can be a warped rotor, but the more common cause is an actual re-tempering (by heat) of a small (brake pad sized) area of the steel alloy of the brake disk.

When a brake disk is heated up to very near its maximum operating temperature, due to something like a situation where there was a long period of brake use on a long downhill run (this is common with inexperienced drivers who don't know how to "gear down" the transmission rather than constantly use the brakes), and at the end of this period of extreme heating if the driver/rider is faced with a reason to come to a complete stop and sit for a while (like a traffic light or a stop sign) if the driver/rider holds the brake lever/pedal down during that time the area of the brake disk that is located under/between the brake pads can undergo what is essentially a re-tempering of the area under/between the brake pads.

This re-tempering of the small area of the brake disk held under/between will result in a slight change in the crystalline structure of the steel alloy in that area.  Once the brake disc cools the change is permanent.  Forever after this event this small portion of the brake disc's surface area that got re-tempered by this extreme heating event will have a slightly different coefficient of friction from the rest of the brake disc area.

 

The permanent result of this change is that when you squeeze the brake lever (or press the brake pedal) the brake pads will experience less "bite" (a lower coefficient of drag) as they sweep over the small (brake pad size) re-tempered area of the brake disc.

I belive GreginDenver is Right On. This information on automobile hard braking to a stop and remaining on that super-heated area was the subject of a local motor mouth article explaining how brake rotors get warped.

Well said Greg.

BTW: I've done the free-the-rotor-buttons/bobbins proceedure without any negative impact.

Hi MaxSwell,

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Thanks VFRDiscussion

On 7/19/2019 at 8:32 PM, Captain 80s said:

I like it!  Nice haul.

+1

5 hours ago, fink said:

Last week.  Got together with a few mates for a week of enjoying the fantastic roads we have in Scotland.  4 of us for 6 days followed by another 10 arriving on Thursday for a further 4 days. 

5 vfr in group 4 of them 8th gen.

 

That is a great picture of five great machines.

7 minutes ago, Mohawk said:

I much prefer this site for bike specs https://www.motorcyclespecs.co.za/model/Honda/honda_vf400f 83.htm

 

Enjoy

This is a good one. Thanks Mohawk.

4 hours ago, Dutchy said:

Planning to pick up a complete VF400 + loads of spares (incl a seized engine ) tomorrow afternoon....

Not seen any pictures but what the hey!

 

 

 

https://www.ultimatespecs.com/motorcycles-specs/honda/honda-vf-400-f-1987

On 6/7/2019 at 2:21 AM, Grum said:

Nice shot Dutchy, head for the hills!

Dutchy has hills?! Nice one Grum.

19 hours ago, Dutchy said:

 

Today was a very special, albeit sad day.

 

Fred, a very active member in the Dutch VFR Club Nederland had passed away following a mc accident before Easter. He never wake up from the coma.

A seasoned, methiculous, ever friendly 66yr old rider is gone.  It was the family's wish to give him a fitting farewell from the hobby he'd enjoyed so passionately.

So some 170 bikes lined the steet, engines idling, helmets by the front wheel. As the herse passed each bike, full throtle was given and engine subesquently shut down.  Thus a wave of the sound he loved accompanied him on his last journey.

 

 

As quoted during the service: 

"life after death is uncertain,

life before death IS certain,

so he lived life as much as he could..."  

 

 

Ride In Peace Fred

 

 

 

 

 

Quite sad. Condolences to all. I could not invision a more suitable sendoff for any dedicated rider.

Lookin' good there Dutchy.

I also think this thread should be pinned. I have every intention to ride my fifth gen for as long as I can swing a leg over it (at 69 yrs. old it gets harder every year). So I can imagine the day when parts for it are hard to find. And these links could be invaluable in chasing down suppliers for later generations.

Excellent suggestion Crepitus!

Wow! I just noticed the red forks. V cool.

I recall a warning about focused sun rays from the Givi touring screen. But I quickly forgot about the warning and parked in the sun without regard and without negitive results. I work on my machines primarily in my non-shaded driveway. Bikes ('00 and '01s) have sat out in the sun for hours frequently tail-to-the-sun. I'lll be more careful of my '98. Thanks for the warning. 

20 hours ago, zupatun said:

My 2000 has 97K miles...I'm 245lbs, ride with full bags and get 40-42mpg in touring mode.. On gas in the twisties 32-36mpg.

That seems to agree with what I'd expect. The reason I don't really know is I've made it a habit to never check my mileage when I'm having a fun time carving up the twisties.

There is no point in spoiling the fun with practibility. Your Mileage May (And Probably Should) Vary.

A beautiful work of mechanical art. Jamie is a Leonardo da Vinci in my book.

On 7/23/2017 at 12:07 PM, Mohawk said:

About 10-15% same as with most bikes, never believe a stock speedo. I've since had the bike up to a real 155mph & it was still accelerating, I had to back off because what I thought of as a smooth road before was not that smooth & the bike was wheelieing off the small crests in the road !  My bike makes 120hp on a known good dyno, so I assume the ramair adds a bit more ! I keep trying to arrange a top speed run to find out how fast it really will go.

I've done this calculation continuously across five fifth gens. I've figured the speedo is off by 8.8+ percent at 70mph. On the high (optimistic) side. 70 mph indicated equals 64 actual. GPS and side of the road radar confirmed this. YMMV I suppose. Tire circumferences could effect this to some small degree perhaps?

On 1/1/2019 at 3:15 PM, Motorenzo said:

A Big Aloha to all, and a Happy 2019.   Gas Mileage question on the VFR's!!!!!  I have 6 VFR's, had 7 but sold my 2002 last year.  Starting with my 86 RWB 750cc and then my 87 White 700cc up thru the generations to my 2003 Silver.  All of them get regularly 45 to 50 MPG depending on the Loud Handle Positioning. Some have the air box mods, some do not, doesn't make any MPG difference.  I did an Iron Butt a few years ago by myself from San Antonio to west of Phoenix in 15 hours. 1050 miles. Here is my point to this Viffer MPG question, its all about the LOUD HANDLE!!!!  On that day of my Iron Butt I was running pretty much 100 to 110 MPH all day and into the night.  Had to stop a lot for gas!!! Was getting 30 MPG at that sustained speed so had to stop def before 150 miles on the trip odo.  One stretch thru Texas I pushed it too far, didn't see any gas stations coming up, finally pulled into a gas station, the Viffer to took exactly 5.5 gallons. It was completely empty!!!!  The only reason I made it to that station was due to easing off on the LOUD HANDLE, slowing down to 45 MPH for about the last 20 miles.   Normally 45 to 50 MPG for my scooters and all my friends that also ride VFR's.   By the way, the Yellow models are the fastest, everyone knows Yellow is a fast color.  Have a safe and enjoyable 2019.   Renzo in Kau, Hawaii

Welcome to the asylum Motorenzo. That is one fine example of the best generation. Having had two Y2Ks I'd have determined they do make one younger and sexier but I'd have argue about that fastest color thing. Everyone knows red has been scientifically proven to be the fastest color. YMMV

On 1/2/2019 at 11:01 AM, Dutchy said:

Mix old skool with new skool 

 

Love the phone. And the VW Beatle. I've owned a dozen of them in my youth. Rear wheel drive and no radiator was great here in the winters. 

18 hours ago, GreginDenver said:

I heard that the EPA fired their motorcycle intake noise regulation from the "grassy knoll".

Oh No! Not another Greg starting a conspiracy sub-thread.

Now I've got to state that this comment was full meant in jest. 

9 minutes ago, Lee 2002 said:

[stepping into shithole]

Man.... I know I'm going to regret sticking my toe in this shit hole......

 

RC51 - have a very similar flapper in their air box.    It is interesting to note that I never saw a race-prepped RC51 with an active flapper (including Honda supported teams).  However street-going RC51's sold by Mother Honda that were subject to EPA regulations did come with an active flapper.

 

I don't think anyone has ever found the "smoking memo" signed by Soichiro, but the common consensus is that the flapper exists solely to satisfy an EPA noise regulation that are done at a certain RPM that is determined by an equivalent speed determined by gearing, or something like that.    Many posters here and on the RC51 sites have modded the flapper and I don't recall anyone posting any evidence that the mod resulted in any repeatable changes in performance.

 

It has been years since I've read any of these discussions, so I'm going off memory.   Google "Motorcycle Flapper Mod" and you'll have a week's worth of reading on the subject across about 5 product lines and thirty motorcycle forums.   I personally buy into the noise control thought (and my calibrated Mk 20 eardrum confirmed intake howl).  Consider this.... The marketing teams would have "variable intake" on every piece of literature if it even resulted in 1 hp or 1 lb/ft benefit.... never saw a pamphlet that mentioned it.  I've also never saw a dyno curve that showed any difference between before/after either.  I thought this discussion ended at least fifteen years ago.   Go figure?

 

[stepping out of shithole/]

Good for you Lee. This is obviously a case of:

On 12/30/2018 at 9:21 PM, polaris956 said:

My "normal" mileage for my 1998 VFR is 40-44mpg on 93 octane.  Only mod is Vance & Hines SSR2 slip on.  

 

If that were my bike it would be a huge red flag.  I monitor my mileage for two reasons

1.  Curiosity

2.  Great indicator of driving habits and or motorcycle health.  

I used high octane fuel when I got my first fifth gen assuming it had a built-in timing advance. Once someone wised me up on that, I've run 87 octane over 200,000 miles of fifth gen riding. The first engine, still in excellent, never-opened- up condition, had 105,000 miles on the odo when it was KIA'ed by my first deer confrontation.

No need to waste your money.

And welcome to the asylum from The Land Of Interesting Weather. By your choice of weapon it is obvious you have great taste in mc's.  

I've always thought fifth gen fairings were ABS. I cannot remenber for sure what I used to fix the trim around turn signal spaces, perhaps PlastEase, but my results have been so so. 

My experience so far has been with '00's and '01's so I cannot comment on mileage but my current '01 came with a Staintune and an PC2. Low rpm's were snatch-free and the machine felt faster but gas mileage was at least 10% less than I'd gotten on three previous 00 - 01's. Sold the can and PC, went back to stock and mileage returned to 50's and better. Easily. 

And I cannot remember where I learned this but I believe the K&N filters are bad news. I replaced the K&N mine came with. The OEM air filters have always worked well for me. I believe the K&Ns restrict air flow.

On 12/22/2018 at 5:48 AM, Dutchy said:

No room in the inn,

so a "stable" will do 

 

 

 

My Lady of Blessed Acceleration

Not failed me yet! 

You obviously "Keep the things you love close". I love that lady also.

Long live the MLoBA. And also the Lady of Protection From LEOs with no sense of humor. 

4 hours ago, Urbanengineer said:

Or just stick to OEM 😝.

+1 I've bent and unbent (carefully) my share of oem levers. For the most part Honda makes good stuff.

3 hours ago, Sweeper said:

I hate to toss a good souvenir.


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Inspirational! Brilliant Didit and Sweaper. Wish I'd been there.