Malice

Thank you for this thread! Just been added to my mod list.
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Nexium attorneys

lowell

What is an avg mileage for a stock VTR . I am getting only 25 -28mpg and running rich.

SlowHAWK

Just a thought.... but why not just lay some fiberglass in the bottom of the tank to get a perfect "maxed out" airbox shape for the lid. Then chop off the top portion of the airbox lid and "glue" the shaped fiberglass to the airbox lid flange... now you can use this cobbled part for making a mold, and then a 1 piece custom fiberglass airbox top that fits the airbox perfectly and the tank. Yes it's a bit of work, but in the end, you'd have a perfect part that fits, and would be perfectly sealed off.

Plus... you could probably make a bunch of them real cheap and sell them to the other forum members to recoup some of your time and expenses!!!!

J.

lazn

Mid 30's

Malice

33 mpg with 15/43 sprokets
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Teen Webcams

skokievtr

In the 1960's into the 70's, aerospace "tool & die" guys who referred to themselves as mold makers could do anything. We were into composites of primarily thermoset (due to heat) monomers, copolymers, all sorts of fibers and fillers, honey combs, foam board, aluminum, titanium, anyway you could make it work. But we made the molds and mandrels and the machines (including heated presses, ovens, autoclaves, ovens & ovens & expanding silicone molded blocks, vacuum bagging of course, etc) to use everything because no one had done it before. Now with surface measuring and integrate CADCAM positioning the young engineers have lost the skills to develop the materials and processes by hand. Scary for me that I remember how to do it like second nature but can't remember what I did yesterday. Red & Green plaster, molding clay, profile templates for screeding equaled flawless craftsmanship with just calipers, straightedges and a good eye. Then came mainframes, ultrasonic and lasers, and finally PC's, and mold making was never the same.

mdbuehler

Clay is the way I'd go, but the point was to use the tank if possible, and since it worked no need to do much else. If a working airbox was desired, I'd trim it like I did, then pack clay above and beyond the size needed on the exposed areas of the filter, then moosh the tank down. You'd get the exact shape. Take that when dry, plaster mold it, then when THAT is dry, fiberglass in the mold.

At that point if you threw in the fabricated rear tank mount, you could have full on VFR tank conversion kits Just don't think enough folks are out there looking to do it to justify the time it would take.

mdbuehler

Just ran the numbers on the first fill up. Went 165 miles doing a mix of back curvey roads and freeway before the low light came on. Went another 12 miles, and put in 4.7 gallons on 177 miles. Should have about a gallon left at that point.

MPG is 37.5, with a tank run down to fumes I should get just over 200 miles, and if its strictly freeway I bet I get another 15 or so on top of that

skokievtr

Kai Ju, could you start a new thread & post complete pics of your VTR?

lazn

He did, back in 2005 https://www.superhawkforum.com/forum...ead.php?t=7221

supermatt996

with the added weight of the extra gallons can you still drag a knee in the corners or is the balance thrown off? and does it set your chest up higher if your tucked

kai ju

It's only about ten more pounds with a full tank and once you get down to 4.2 gal. the weight is about the same.
The only time I drag my knee is when I'm crashing...........
I can't tuck in because I always run tankbag.

Kai Ju

skokievtr

Thats why I only added a 1.1 gallons or so when I raised the top of the OE VTR tank rather that mod a VFR tank. It almost looks the same but about 1.5" taller in back so you can tuck-in or lean on a tank bag. Only gave me another 40 miles or so though but is lighter including the tank. On remote trips I still carry 1 or 2 camp stove 1.3L gas bottles.

tangostorm

Great write up nothing to add just that i love your F*****G WHEELS HOW COOL ARE THEY...........

lowell

any one stilll looking for 98-01 VFR tanks (RED) I may have a line on 3.

kai ju

Depends on the condition and the price.
What do you have ?

Kai Ju

lowell

$150 and photos attached of the better one. It's got some paint dings on the
front and a small ding on the left side. It will probably be $20 or $30 to
ship.


From the source, not my tank, person in SO CAL.

If your interested I can send you the pics and emale

kai ju

In don't see any attached photos..........

Kai Ju

lowell

Looking at a tank conversion of a VFR tank

What should I get as parts to duplicate the VTR parts to not scavange parts from the VTR tank?

badboyrr

Nice write up, excellent work! Your bike rocks!

kai ju

Fuel Valve and fuel level sender/gauge.
Airbox lid if you are going to modify it like mdbuehler did.

Kai Ju

motokraft

would the vfr valve flow enough fuel ?

kai ju

The '98-'01 tank doesn't have a fuel valve since the VFR 800 is fuel injected.
I adapted my VTR fuel valve to the VFR tank.

Kai Ju

motokraft

oh .. doh , forgot , we had a 98 800 carbed model vfr for a year , i sold one a while ago but never thought to have a look , but my next project im putting parts together for at the moment is tuned and looking at the monster valve on the vtr im guessin it could be a bad idea to gamble it would flow enough fuel (vfr valve )
really dont mean to ask stupid questions (i really should know better) but will the unit for the injection in the vfr tank work with a non injection system , (my bike has a fuel pump fitted )

tidy looking work there kai ju

thanks

kai ju

The fuel injection pump will not work on a carb because the max pressure for a carb equipped system pump is 3-4 psi, while a fuel injection pump puts out about 50psi.
As far as the size of the VFR fuel valve is concerned, remember that the max amount of fuel it has to flow is what the mainjets and pilot jets need at full throttle, no more.

BTW, thanks for the compliment. Here is another shot that also shows the rear tank mount and how the seat hooks in.

Kai Ju

motokraft

sorry to be such a squib , what i meant is the vtr already has a fuel pump fitted and i intend to keep it and was thinkin i could just run a feed from vfr tank (through unit in vfr tank ) to my pump , not use injection model pump , the thing is im hoping to do a short term build in the next couple of months and am just tryin to line up the work in my head , and keep all fasbrication etc to a min , thanks for responces by the way , and sorry for thread hijack

jdhawk

good show looks kickin man

Judolisa

can we get these pictures up again, it would be grate to see this mod :P

mdbuehler

Sorry about that, do they show up now? The server that hosts these is literally up in the rafters of my garage and occasionally it goes offline (and it takes a while to notice ).

Syclone

+1

You have 929 front-end and RC51 wheels - Did you have to get custom-sized bearings to run those wheels?