In development: RPM header for FJ's

[racerrad8]

I moved Randy's post over for more exposure and discussion. Pat

Is that a custom exhaust?

Not custom.  It is the Akra race version for the XJR1300...  Marc Rittner sourced this from Europe.  It is quite cool and well made I believe.

RPM Randy is knocking it off I believe so we can have more like it for our domestic FJ crew.

Frank

I believe the correct term is "Reverse Engineering"...

Nope, a new complete stainless steel system from the header flange to the muffler tip. I am in discussions with a company that is interested in manufacturing a complete system for the FJ.

We will be using all versions of the FJ for the design & engineering phase. I have a list of notes of issues that need to be addressed, oil drain plug access, lower fairing fitment, muffler design & noise to name a few.

The discussions are at the mid phase and the next discussion is to start scheduling bikes into the manufacture for design.

We have discussed price, but nothing can be solidified until they see the bike first hand and start the process, I do not have a cost. My goal is to have several different levels of the system from aluminum & carbon fiber to titanium mufflers.

Look for more information next spring.

Randy - RPM

No offense to Randy intended...
Frank

No offense taken Frank...I have added that comment to your bill

[yamaha fj rider]

  Randy if it comes from you I want one, will be looking forward to seeing these in the spring. Thank you Randy!!!!     

Kurt   

[Pat Conlon]

Years ago, I remember seeing a 4 into 2 into 1 header design where the #4 primary tube crossed over the #2 and #3 tubes and connected via merge collector to the #1 primary tube.

This would be the correct 4-2-1 configuration on a engine with a 1-2-4-3 firing order, however obviously the primary's were not equal in length.

The header sure looked strange. Instead of the customary look of 4 primary down tubes running straight down, the #4 tube crossing over looked weird.

....and forget about fitting it with a chin fairing.

[Mike Ramos]

Hello everyone,
Heck, I was just at the RPM shop yesterday, and there was no mention of a new exhaust system.
However, Randy was busy with my bike, & while minor it was important.
I would like to give Randy a "special thanks" for taking time between other projects to spend time on my bike.
And I took advantage of a new service Randy offered.
More on a later posting as I'm short on time at the moment.
Ride safe,
Mike Ramos.

[nurse]

Will retaining the centre stand be a possibility, I do like my centre stand!

[yamaha fj rider]

Randy shock and exhaust update please. Many thank's Randy.

Kurt

[racerrad8]

Randy shock and exhaust update please. Many thank's Randy.

Kurt

The exhaust will not start the design phase until  the fall, October/November. From there the manufacturing and testing of the prototypes will be tested for performance & fit. I am hoping for spring 2013.

The rear shock is in the final assembly & dyno testing before heading to me in the next week or so to begin road testing. I am hoping the setup will be close and not many changes will be required.

Believe me, I have a lot of money tied up in the shocks and have been patiently awaiting the product to arrive. I need the shocks to be done before I am truly able to invest in the exhaust. Fortunately the manufacture can't begin until the fall, so hopefully all the pieces will fall in place.

It is with everyone's current and continuing support that allows me to bring these needed items for the FJ to life.

Randy - RPM

[yamaha fj rider]

Randy thank you for the update and hard work. I was going to buy a Penske shock but I would rather have yours and don't mind waiting. Looking forward to when they are available. Do you nave a ballpark on the price and further information on specification. Thank you again and keep up the good work. 

Kurt   

[Mike Ramos]

Gentlemen,

I agree with Kurt (and others as well). I am also waiting the new shock from RPM based on my most pleasant experience with the Fork Valves, which have far exceeded expectations.

Having many miles on my FJ, the swing arm bearings needed replacing. While it was off, I had the swing arm  strengthened by having a side plates welded to the outside surfaces for increased rigidity and sideways flex should be minimized by cross bracing that was added. The mounting points remain stock & are not effected by the strengthening.

While I have no doubt the new shock will certainly add to the demands of the suspension components, it will be interesting to see if strengthened swing arm noticeably improves the feel of the bike.

There are a few poor quality pictures in the Gallery (under Bike Photos). I'll learn to improve & post them soon.

Ride safe,

Mike Ramos.

[racerrad8]

Okay, the design phase is going to get started in the next couple of weeks. I just want to confirm I have all of the issues addressed during the design phase.

1) Bolt on system requiring no modification to mount.
2) Chin fairing clearance.
3) Oil pan drain plug access.
4) Center stand use & function.

Is there anything else during the design that anyone see that I need to address as well?

Let me know, Randy - RPM

[FJmonkey]

Okay, the design phase is going to get started in the next couple of weeks. I just want to confirm I have all of the issues addressed during the design phase.

1) Bolt on system requiring no modification to mount.
2) Chin fairing clearance.
3) Oil pan drain plug access.
4) Center stand use & function.

Is there anything else during the design that anyone see that I need to address as well?

Let me know, Randy - RPM

Let me speak up for Father Pat and his Simichrome congregation of followers.
5) Already polished.

[aviationfred]

Okay, the design phase is going to get started in the next couple of weeks. I just want to confirm I have all of the issues addressed during the design phase.

1) Bolt on system requiring no modification to mount.
2) Chin fairing clearance.
3) Oil pan drain plug access.
4) Center stand use & function.

Is there anything else during the design that anyone see that I need to address as well?

Let me know, Randy - RPM

Maybe a universal muffler hanger to account for the diferrences in the 84-87, 89-90, and 91-93 foot peg brackets

[racerrad8]

Maybe a universal muffler hanger to account for the diferrences in the 84-87, 89-90, and 91-93 foot peg brackets

I have arranged all three FJ models to be there for the design so the possibility of inter grating a universal mount is possible.

Randy - RPM

[Dads_FJ]

Lots of FJ's use saddle bags, GIVI or other.  It was my understanding that the original FJ exhaust was kept low for mounting bags, I would recommend the mufflers height not exceed OEM.  Randy are you thinking 4-1 or 4-2 systems? (I like the symmetrical look of a 4 into 2 system).

John

[WhiteBeard]

Randy are you thinking 4-1 or 4-2 systems? (I like the symmetrical look of a 4 into 2 system).

+1

/Nat