Nitrous possible?

[Karmak]

For all the techno-gurus-I've run nitrous before, but never with fuel injection. Out of curiousity, I'm wondering if the FJR top end, etc. could stand up to a nitrous set-up and given the FJR's configuration, whether it's possible at all? Just curious, I swear. I would never contemplate such a set up. Never! Please believe me. :innocent:

 

[slapnpop]

Woo! I get to be the first to say... WHY?!?!

and oh, if you really want a power adder, get in touch with TTS over in the UK, and see if they'll do one of thier supercharger kits for FJR

 

[TheRepairMan]

Any time you "spray" ANY stock engine it induces stresses that CAN go far beyond what the internals were designed to handle. That could result in a catastrophic failure and lead to a serious accident on one or two wheels.

It's an expensive game to play. Especially impractical if it's a machine that you pleasure ride a lot and MUST have it safe and reliable, hopefully for years to come.

IMO the FJR, like many performance engines, could probably stand a short shot of Nitrous Oxide and stay together but it would eventually take it's toll.

Any way you modify for more power remember the money rule.

As power goes up reliability goes down and thus costs more money.

Interesting question though, to be answered on some old beater maybe, but I wouldn't muck up such a beautiful bike as the FJR.

 

[roadrash]

Slapnpop,

Now your talkin a supercharger sounds great. Has anyone put one in?

:blink:

 

[slapnpop]

Not that I've seen on the FJR, but the TTS unit was fitted to both a Hayabusa and a GSX-1400. It was some time of belt-driven unit with a variable input gear, so it could be tuned to a wide range of max boost. I'm sure they are capable of putting one on the FJR engine, but I'm not sure they'd be able to get the plastic back on afterwards!

 

[madmike2]

Anything can be plumbed. I vote Karmak as the one to experiment with this set-up and report back to us!

 

[RTSR1/FJR]

Screw the NAYSAYERS! If you can do an R1, you can do an FJR! Do it! lol

 

[RadioHowie]

I'd say stay away from stressing this engine anymore than you have to.

They have been known to eat their valve guides with absolutely no outside interference or documentable reasons.

 

[ionbeam]

Among the power adders Nitrous is one of the easier installs. Bare bones you simply drill and add 4 low hp injector nozzles, a button plus wires to a solenoid, bolt the bottle someplace secure and cobble up a small bit of line plumbing. Nitrous power is there only when the system is armed and when you ask for it (push the little button) whereas the other adders are there all the time. Remember to keep the bottle filled.

For Nitrous to really work you need to map fuel and spark curves. Best is to have a bottle heater and line purge. Nitrous can cause lean melting of valves, plugs and rings without the fuel/spark mapping. What Nitrous really gets to are the crank and rod bearings.

Turbo and supercharging typically require compression reduction and they run much better with intercooling which involves lots of extra plumbing. Fuel and spark tuning is way more critical in these applications. You will just love being leaned way over in your favorite corner and as you are powering out of the turn having the turbo come on to high boost before you are upright <_< Anyone with early 70s Kawasaki 2-stroke experience knows the secret dismount technique :erm:

Alan

<Radman bait>

[Nitrous inhalation by the operator is another topic. Just like motorcycles it leads to short term thrills followed by parts melting down.]

</Radman bait>

 

[Karmak]

Just a little background-many moons ago I had a KZ1000 bumped up to 1166. It was cut and raked, had a triple swing arm to take the stress (a third arm welded to a Kawi 750 swing arm, which was longer), steering dampers, bottom and top ends beefed up, electric shift (cut-off), etc., etc. I had a turbo on it originally, but as mentioned above, it was great fun wondering when it would come on. I ditched the turbo and installed nitrous-and loved it. It never gave me any problems, but maybe I was lucky. However, it's true that as soon as you monkey around to a point, things start breaking-particularly Harley strokers we messed around with. So maybe I won't fiddle with the Feejer, but-I do have an FJ1200 sitting out there...

 

[james1300]

You guys wanting to Supercharge an FJR, think you have a heat problem now? Just forget about a Turbo, too! Way too much heat there. Try and squeeze a supercharger into your bike! Ha! You will beg for the old days!

NO2, is the EZest and cheapest, as well as longest living choice, and the most likley to fit. Now if Yamaha would just make oversize bag lids....

 

[Karmak]

Imagine the size of the nitrous bottles you could put in the hard bags.

 

[RadioHowie]

Imagine the size of the nitrous bottles you could put in the hard bags.

You wouldn't want to go too large, though.

The bags make great places to store small parts while you're replacing the pistons the nitrous burned through.

 

[slapnpop]

TTS Performance UK

These guys definatly know how to do it right, and make the engine durable enough for the 'charger.

 

[RadioHowie]

TTS Performance UK
These guys definatly know how to do it right, and make the engine durable enough for the 'charger.

That's craaazzzyyy...

I do believe that's a turbocharger housing bolted to a belt-drive housing.

Gotta be some gear multiplication going on in that puppy to get the kind of impeller rpms you'd need to make HP with a turbo front-end.

But besides the mechanical questions I'd have about the system, I like it for its simplicity. Sure looks a lot simpler than a Rootes-type blower.

Oh-oh...just found this on their site:

In turbochargers the hot exhaust gases spin the turbine up to speeds of up to 150,000RPM. TTS/ROTREX superchargers spin up to 250,000 rpm depending on model. To get these high speeds in the TTS/ROTREX supercharger the input drive shaft operates through a special planetary gearbox to speed up the turbine, the result being high-pressure air out of a compact unit the size of an alternator.

Baby, you just lost me. If/when that bitch frags, you're gonna have 250,000rpm pieces of gears head for your legs and nether regions at subsonic speeds.

 

[ionbeam]

Power adders?

Howzabout this:

-or straight up displacement-

Alan

 

[Caba]

Oh My :bigeyes:

 

[roadrash]

Baby, you just lost me. If/when that bitch frags, you're gonna have 250,000rpm pieces of gears head for your legs and nether regions at subsonic speeds.

.
I guess no pain no gain. Anyway who needs kids.

:bigeyes:

 

[roadrash]

ALAN,

There you go, I think your on the right track.

:clap: