Drag Racing

HomerMC · Dec 7, 2005

Does anybody here drag race? I have a 160 cu. in. 45 Deg V-Twin ProStock Bike which we run in the AHDRA circuit. We won the ProStock National Championship this year and set new ET records for the 1/8 & 1/4 mile.

This bike is a little faster than my FJR.

I know of some FJ fuel bikes in Europe but not in the States. If anyone has run an FJR, what kind of times & speeds did you turn?

FJReady · Dec 7, 2005

Ionbeam will be along soon with a copy of a pink slip. His bone stock FJR is no slouch and his RT is pretty good too. Not quite as pretty as Angelle however.

FJReady

HomerMC · Dec 7, 2005

My rider consistently runs .05 or less RT's. His best this year was a .003 and only one red light.

By the way the record ET was 7.39. Speed wise we're right around 180 in the 1/4.

ionbeam · Dec 7, 2005

The following time slip is pretty typical -- e.t. varies down to 11.1x. I've never seen a FJR run under 11.00 or faster than 123 mph. I haven't killed my stock FJR trying for anything quicker than 11.1. Feejer launches well and runs best when shifted a bit short (~8,500 rpm). My friends have reworked the air box in several ways, added aftermarket exhausts, tried a verity of PCIII maps and the 11.00 barrier still hasn't been popped, at least by us fat old guys. Some of the younger, smaller guys that don't mind risking grenaded parts can probably run a tick under 11.00.

While Feejer can't think of running the same (very fine) performance numbers that your purpose built track bike runs, I challenge you to an 8 hour ride around the country side :lol:

Alan

Dangerous Dave · Dec 15, 2005

The following time slip is pretty typical -- e.t. varies down to 11.1x. I've never seen a FJR run under 11.00 or faster than 123 mph. I haven't killed my stock FJR trying for anything quicker than 11.1. Feejer launches well and runs best when shifted a bit short (~8,500 rpm). My friends have reworked the air box in several ways, added aftermarket exhausts, tried a verity of PCIII maps and the 11.00 barrier still hasn't been popped, at least by us fat old guys. Some of the younger, smaller guys that don't mind risking grenaded parts can probably run a tick under 11.00.
While Feejer can't think of running the same (very fine) performance numbers that your purpose built track bike runs, I challenge you to an 8 hour ride around the country side :lol:

Alan

Now you done it!! Now I'm gonna have to hit "test and tune night" at Kil-Kare dragway in the spring to see if I can crack 11.00 I only weigh about a buck-fifty (sans gear), so I think I've got a shot. B) B) There's a kid at work with a 750 Gixxer I've been threatening to whoop up on. That would be the perfect venue.

Did you tie your front end down??

Bike Effects · Dec 15, 2005

Did you tie your front end down??

There ya go with that R1 talk again!

Dangerous Dave · Dec 15, 2005

Did you tie your front end down??

Click to expand...

There ya go with that R1 talk again!

Hey man, it makes a HUGE difference! The FJR may not be as wheelie happy as the R1, but launched hard, it WILL come up and smack you in the faceshield! You can bet I'll be tying the FJR down at the strip come spring. Ion has thrown the gauntlet down! I am there! :assasin:

slapnpop · Dec 15, 2005

While Feejer can't think of running the same (very fine) performance numbers that your purpose built track bike runs, I challenge you to an 8 hour ride around the country side :lol:

You forgot about the weekend's worth of clothes, camera, sleeping bag, tent, rain gear, tunes, maps, reading material, drinks and snacks, etc.

Bike Effects · Dec 16, 2005

You can bet I'll be tying the FJR down at the strip come spring. Ion has thrown the gauntlet down! I am there! :assasin:

I have been threatening to take my R1 to the track year after year, and yes, tying down the front end on the R1 is a good thing. I figure just about anyone can get into the 10's on an R1 and I just would like to make a 10 second pass. What a kick!

Dangerous Dave · Dec 16, 2005

I have been threatening to take my R1 to the track year after year, and yes, tying down the front end on the R1 is a good thing. I figure just about anyone can get into the 10's on an R1 and I just would like to make a 10 second pass. What a kick!

I only took mine once. Ran a 10.57 and a 10.55 (at around 138 mph IIRC) and left happy. Never ran it again at the strip. My old 900 Ninja (with Wiseco 972 kit I installed) was a low to mid 11 second bike. A mid 10 second bike is ALOT faster! The Ninja was also about 85 lbs heavier. That was my "sport-tourer" for MANY years! Man we did alot of great trips together.

Bike Effects · Dec 16, 2005

I only took mine once. Ran a 10.57 and a 10.55 (at around 138 mph IIRC) and left happy.

Front end tied down or not?

ionbeam · Dec 16, 2005

Bit late to reply... New England Dragway doesn't ban tying down the suspension but they will make you un-do it if they see it, so I don't bother. Nor do I lock the rear suspension which NED also frowns on.

Alan

Dangerous Dave · Dec 16, 2005

Front end tied down or not?

Definately tied down. It was pretty much a necesity and I knew that from the git-go. They were most beauteous runs too. Launched pretty hard, picked the front wheel up about 12" and carried it all the way through 1st gear. Front wheel touched down with a chirp on the shift, then picked it back up and carried it all the way through second, repeat all of the above for the next shift and third gear. Front finally stayed down in fourth gear and through the traps I went. In retrospect, I'm sure I could've gone faster with a few more practice runs (could've launched alot harder but was afraid of looping it). It's $10 on test and tune night for as many passes as you can make before they shut it down for the night. Unfortunately, that brings out every freakin' Billy-Bob with an old ****** Nova that will surely throw a rod somewhere down the quarter, shutting the track down for 20 minutes while they clean up his oil and engine chunkies. Too much time spent sitting in line waiting to make it a real useful event. Ideal though for asking Billy-Bob which cam he was running before his motor puked all over the track. :haha: :haha:

Bike Effects · Dec 17, 2005

Front end tied down or not?

Click to expand...

Definately tied down. It was pretty much a necesity and I knew that from the git-go. They were most beauteous runs too. Launched pretty hard, picked the front wheel up about 12" and carried it all the way through 1st gear. Front wheel touched down with a chirp on the shift, then picked it back up and carried it all the way through second, repeat all of the above for the next shift and third gear. Front finally stayed down in fourth gear and through the traps I went. In retrospect, I'm sure I could've gone faster with a few more practice runs (could've launched alot harder but was afraid of looping it). It's $10 on test and tune night for as many passes as you can make before they shut it down for the night. Unfortunately, that brings out every freakin' Billy-Bob with an old ****** Nova that will surely throw a rod somewhere down the quarter, shutting the track down for 20 minutes while they clean up his oil and engine chunkies. Too much time spent sitting in line waiting to make it a real useful event. Ideal though for asking Billy-Bob which cam he was running before his motor puked all over the track. :haha: :haha:

Our Wednesday nights at Infineon (Sears Point) are a bitch to try and get a few runs in as there are so many cars.

paint · Dec 21, 2005

OK,I'll show my ignorance. How the hell do you "tie down" your front end?

aint

Dangerous Dave · Dec 21, 2005

OK,I'll show my ignorance. How the hell do you "tie down" your front end?
aint

Not a show of ignorance at all. It's a cheap easy anti-wheelie measure. It usually involves draping a tie-down strap over the steering head just behind the upper triple clamp and putting one of the hooks on each end to the bottom of the forks and cinching it down. The idea is to compress the front suspension as much as possible to bias the weight to the front. Alot of guys just put the end of the hook into the hole in the bottom of the fork leg...RISKY BUSINESS!!! If the bike does wheelie (very possible!) the suspension can compress even more on the landing, freeing one or both ends of the strap. That can get ugly at any speed! I made a pair of tie-down brackets which I fixed to the top caliper mounting bolt. The other end had a hole just big enough to get the tie-down strap hook through with some effort. Virtually no chance this way of either end of the tie-down coming out. Pulling the front end down in this manner makes a HUGE difference at the drag strip. It allows you to launch the bike MUCH harder without fear of it looping over backwards and ruining (or ending) your day/life. On any extremely powerful bike (especially the wheelie prone ones) it's a "must" to do something to lower the front end if you're going to make good time in the 1/4 mile. The tie-down thing is just easy, especially if it's your daily-driver in question as it only takes a few minutes to do and undo. Does that answer your question??

Now you guys are getting me all excited for spring and "test and tune night".

tripletango · Dec 21, 2005

Did you tie your front end down??

Click to expand...

There ya go with that R1 talk again!

Sounds like a Busa dude to me!

tripletango · Dec 21, 2005

Did you tie your front end down??

Click to expand...

There ya go with that R1 talk again!

Click to expand...

Sounds like a Busa dude to me!

Actually we have been talking about launches in another thread. It is amazing to me that I have not really touched the FJR's real performance potential. Having read this thread I know how much behind the curve I am!

paint · Dec 22, 2005

Thanks Dave,

Makes a lot of sense to me.

If you remove as much preload as possible up front and add as much as possible in the back,don't you get safer,legal, similar advantage?

Paint

Drag Racing

Help Support Yamaha FJR Motorcycle Forum:

New member

Well-known member

New member

2 FUN

The older I get, the faster I was...

Well-known member

The older I get, the faster I was...

Rest in Peace our Forum Founder

Well-known member

The older I get, the faster I was...

Well-known member

2 FUN

The older I get, the faster I was...

Well-known member

Well-known member

The older I get, the faster I was...

Well-known member

Well-known member

Well-known member

Similar threads

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!