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Old 03-21-2012, 11:50 PM   #12601
robmoto
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Or do something like this, and have the gases coming out the back only,
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Old 03-22-2012, 05:23 AM   #12602
bluesman
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Quote:
Originally Posted by ztaj View Post
Arrived today It astounds me how quickly things can get from one side of the world to the other sometimes

thanks Spen I owe you

Unfortunately I won't be using it for a while. I had a wee spill on the weekend which resulted in a helicopter ride to hospital and a couple of days of hospital food The end result is a fractured hip, sore ribs and shoulders and a 6-8 week break from work/riding
C'est la vie
Wow....bummer.
Get well soon and I hope this will pass with minimum of problems....
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Old 03-22-2012, 05:31 AM   #12603
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Well guys, it is way more tricky than this.
Comparing surface of outlet to number of holes etc. does nothing at all to estimate if it will restrict motor etc.
What works on midrange as advantage could be disadvantage on high rpms, there is backpressure wave which is in fact directional and there is intake flow that has 50% effect to it.

I am not big fan of original cans because they are heave as lead and do not help DR overall weight.
I think Rob's suggestion makes lot of sense - if you can cut middle of blanking plate and weld on small outlet, then you have possibility to play with additional db killers and sound tuning.
I can't say that I am in awe of single GPR sound (I mean usual can, not conical ones like Hessler have on his DR) either.
And in my opinion Laser can does not sound nice at all and actually quite restrictive in road legal version.

There is still loads of potential with this Jama can for sure! The harsh edge of sound actually coming from design with side outlets and wave bouncing off blanking plate.
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Old 03-22-2012, 11:50 AM   #12604
spen
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Well i had a few days off work and decided to take a few runs out ,Didn"t use the BIG as i have no M>O>T on it .So the first run was up into Donegal 375 miles and the second was 120 miles up the Antrim coast .I love looking at pics of OZ etc so i hope you enjoy my pics













]

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Old 03-22-2012, 12:59 PM   #12605
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Great shots Spen, looks like the weather improved over the day for you aswell.
Meant to be great weather this wknd, hoping to get out myself, might bring the camera
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Old 03-22-2012, 02:20 PM   #12606
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How far away do you think you are from me up here ? 350 miles? looking for a big run out over the summer 600 miles or so in a day
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Old 03-22-2012, 11:30 PM   #12607
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Spen great pic,s very nice old light house I like the look of these old buildings, and the mountain just sems to pop up out of know where and would worthy of a climb, or part there of .
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Old 03-23-2012, 12:36 AM   #12608
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Ya silly old buggar, you should know better at your age. That's what happens when you shorten the suspension like that. Seriously, I hope you're OK mate. Recover quickly and get back on the BIG soon. Cheers, Simon.

Quote:
Originally Posted by ausibatla View Post
Unfortunately I won't be using it for a while. I had a wee spill on the weekend which resulted in a helicopter ride to hospital and a couple of days of hospital food The end result is a fractured hip, sore ribs and shoulders and a 6-8 week break from work/riding


Sorry to hear about the prang, mate. Hope you heal well and fast.
Cheers.
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Old 03-23-2012, 02:58 PM   #12609
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http://www.youtube.com/watch?v=h-2n_FfANQw
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Old 03-23-2012, 03:27 PM   #12610
bluesman
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Gentlemen,
Has anyone had in his hands actual current K&N filter for SR43 DR?
I wonder - does it have same 2 small inlets like stock or it (as I remember on old one I seen) has one large round opening in the center?
Specially asking Jabroka

I remember he had KN on his bike,no?
I want to get myself second filter kit for when I ride on paved roads but it must be not more restrictive than stock filter with cut out center part...hence the question.
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Old 03-24-2012, 11:19 AM   #12611
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Quote:
Originally Posted by bluesman View Post
K&N filter for SR43 DR?
Mate, I've got one. A round hole in the middle :)

Cheers,
LarS

BTW: Does anyone know what the Dynokit's jets size are?
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Old 03-24-2012, 01:27 PM   #12612
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GPR Pipe

So the GPR pipe arrived today from Jolly Ole.

Looked very nice. I was sorta expecting some type of internal baffles with the "tri-oval" design but its really just straight-through with probably more packing than the circular cross section model.

Removed the JAMA pipe and midpipe and tried to fit the GPR. The mid pipe was about 50mm SHORT

Tried all the usual rotations and every way possible to fit this thing but I just could NOT magically make the mid section longer.

My SR41 has the standard head pipe and I'm certain that it's the correct length since the standard silencer will fit right up with good pipe overlap and clearance.

SO

A trip to the local auto-muffler shop. A quick bit of cutting and expanding (are those machines cool or what?) got me an extension piece.



Then I had to use 2 T-bolt clamps in a short space.....not perfect but it did at least work.



I think that originally this pipe was designed to have the silencer placed in the "LOW" position like the standard pipe. But, by twisting the mid-pipe a bit, I was able to make it line up with the silencer much higher. The springs that hold the silencer onto the mid-pipe aren't quite straight but they work just fine.



I was trying to make the silencer follow the "line" of the plastic side panel. There was a black bracket that came with the kit that allowed me to place it in just about the position I was looking for.



With the dB Killer in place on the outlet side, the sound is just what I was looking for. Deeper but without any harshness. I'm sure Rob would disagree

Overall it works much better both in sound quality and esthetics than the JAMA pipe did. The last thing to do was to drill and safety wire the tiny 5mm bolt holding the dB killer into the end pipe. This thing looked like it would last about 50 miles before the vibrations would have it loosening and popping out of the end of the pipe (likely only to run over by a truck (lorry) before it could be retrieved).






The only thing I don't know is if standard jetting is supposed to change. Nothing in the information that came with the pipe said anything about this.

Any ideas?
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Old 03-24-2012, 02:54 PM   #12613
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Wicked

Jetting
DR800:
The air filter housing as cut
Mount almost free muffler (aftermarket)
Main 135+135
Cut springs 2.5 coil (ring)
In the vacuum slides drill one holes +1 mm
Mixture bolt to unscrew about 2.5 - 4 (best motor is spinning)
Needles 4 grove
------------ -----------
DR750 (SR41):
The air filter housing as cut + in air box top drill 80 mm hole (Save the jumper across or many holes, cover with foam)
Mount almost free muffler (aftermarket)
Main 130+ 130 (or drill 1,3mm/1,3mm)
Fuel pilot jet 37,5-40 (Germany stock)
Air pilot jet 1,3-1,45 (Germany stock)
Cut springs 2.5 ring (104mm)
In the vacuum slides drill one hole +1 mm (+1/+1)
Mixture unscrew about 2.5 - 4 (best motor is spinning)
Needles 4 grove
Choke fuel jet drill (if the start problem) 0,6- - -0,9mm ? (I have 0,9mm)
Mount the motocross accelerator handle (short)

nejauks screwed with this post 03-26-2012 at 01:02 PM
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Old 03-24-2012, 03:08 PM   #12614
robmoto
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Quote:
Originally Posted by Resi View Post
Mate, I've got one. A round hole in the middle :)

Cheers,
LarS

BTW: Does anyone know what the Dynokit's jets size are?
Lars I don,t know the actual size but I do know this the dynojets main jets are like, this say a suzuki 150 for example equals a 155 in dinojet, one is measured in mm and one is measured by say litres or volume.
Usually dinojet kits have a finer taperd needle.
There kits work well on stock carb for a 650 I used there set up before I bought a pimper on my 650 se.
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Old 03-24-2012, 03:19 PM   #12615
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I have done what Nejauks has said but use 125 mains, and only lifted the needle one third of a clip using a small washer on the yella terra, goes good but likes a drink.
Going for a ride now sorry for being brief.
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