none transalp exhaust on a transalp????

[jamie92j]

hi any body in the know on exhausts??

iv herd that many other exhausts can fit a transalp with some bodging of link pipes and brackets ie CRF450
since the 650 is a twin its 2x 325cc pistons output and can have various other end cans.
i like the look of the small cans they use on ktm adventure dakar bikes like this

http://www.raptorsandrockets.com/ima...s_KTM07_01.jpg

although i would of course be having a single exhaust rather then 2.

i just would idealy like a small single exhaust which didnt wiegh to much and also wasent to loud (maybe removable baffels just for fun)

anyone know much on this subject??

[StumpyFingers]

I think the governing factor would be the inside diameter of the end can.

[jamie92j]

the inside of the pipe excluding the muffler surrounding it? if you know what i mean?

[btbloke]

The size of the exhaust end can will have a marked effect on it's ability to silence. The size of the inside of the silencer length and diameter will obviously be the area that does the silencing. the bikes your looking at are race bikes (plus they are a twin silencer system so can be smaller)and therefore don't have to worry about being pulled up by plod and getting approval from the insurance company, no e number and your going to have problems with the MOT man as well.
My leo vince has E number,removable baffle and weighs less than a third of the standard can. Combined with the Rd03 pipe it was a weight saving of 2 thirds standard.
You could make up an exhaust for the looks and the fit with bits of link pipes,all dependant on a link pipe that will link with your down pipe (whichever one you are using, a volvo end pipe fits the alp and rd03)
If you find a silencer the right size and looks you are after or if you are looking for the along and up look go for an rd04/7 pipe as the angle of the rear of the pipe is lower and less than the 45' of the rd03 and standard alp.
You might want to have a look at antons pipes he did more or less what your after so it will give you some ideas.
The other option is to get the right diameter silencer and cut it down to make it shorter leaving the 'e' numbers intact,just for the aforementioned reasons. Be aware though that a straight piece of pipe from down pipe to silencer won't work well as it builds resonance and sounds s**te so build some bend/bends into the route.
A small diameter one like the crf one might not be up to the job as remember the alp runs rich and it might not cope with the heat.The standard crf ones are probably not that light and to the insurance company would be a modification not a replacement part.I rang mine to check the leo vince was ok and the underwriter "he say yes!" obviously didn't tell him about the rd03 bit but that is honda and obviously the bike breaker sold me the wrong year of bike. I said xl650 he sent xrv650 same engine so "no performance gain your honour honest!"

hope this gives you some help,obviously only my opinion,others may differ

[jamie92j]

thats some good advice there thanks,

'If you find a silencer the right size and looks you are after or if you are looking for the along and up look go for an rd04/7 pipe as the angle of the rear of the pipe is lower and less than the 45' of the rd03 and standard alp.'

so a rd04/7 front pipes would fit the transalp????

'Be aware though that a straight piece of pipe from down pipe to silencer won't work well as it builds resonance and sounds s**te so build some bend/bends into the route'

whats resonance? do you mean its not got as much back presure? sorry dont know to much on this subject

'the insurance company would be a modification not a replacement part.I rang mine to check the leo vince was ok'

what they dont know wont hurt them can always bang my standard pipes back on (yes i know it can void insurance having extra untold mods)

also BTbloke how is your bike running these days with the exhaust mods??
power wise?? fueling??? did you change the jets or remove the PAIR???? how you finding the leo vince???? would you rate one???

many thanks

[btbloke]

here's some answers:-

thats some good advice there thanks,

'If you find a silencer the right size and looks you are after or if you are looking for the along and up look go for an rd04/7 pipe as the angle of the rear of the pipe is lower and less than the 45' of the rd03 and standard alp.'

so a rd04/7 front pipes would fit the transalp????

essentially the same pipes,just different where the collector angles for the sweep up to the link pipe/silencer 45* for rd03 less angle for 750's


'Be aware though that a straight piece of pipe from down pipe to silencer won't work well as it builds resonance and sounds s**te so build some bend/bends into the route'

whats resonance? do you mean its not got as much back presure? sorry dont know to much on this subject

resonance is that horrible vibratory sound you get from pipes when they are too straight, sometimes you'll see yank motors with a straight pipe from the headers to two boxes and then straight out to air,the soundwaves genorated by the exhaust gases bounce back and forth on the inside of the pipe,they build up a rythm that creates vibrations and a horrible sound. It's ok on a short pipe but on a long pipe to the rear of the bike would resonate a bit.
courtousy of wikipedia:
Many headers are also resonance tuned, to utilize the low-pressure reflected wave rarefaction pulse which can help scavenging the combustion chamber during valve overlap. This pulse is created in all exhaust systems each time a change in density occurs, such as when exhaust merges into the collector. For clarification, the rarefaction pulse is the technical term for the same process that was described above in the "head, body, tail" description. By tuning the length of the primary tubes, usually by means of resonance tuning, the rarefaction pulse can be timed to coincide with the exact moment valve overlap occurs.

'the insurance company would be a modification not a replacement part.I rang mine to check the leo vince was ok'

what they dont know wont hurt them can always bang my standard pipes back on (yes i know it can void insurance having extra untold mods)

Would be a bit of a bitch the insurance company inspecting the bike when stolen recovered or at the salvage yard whilst your recuperating in hospital after a side road ambush though eh?

also BTbloke how is your bike running these days with the exhaust mods??
power wise?? fueling??? did you change the jets or remove the PAIR???? how you finding the leo vince???? would you rate one???

The bike's running strong. A blat down the M1 last weeknd revealed high speed cruising is good. Overtaking is a blast,no downshift needed as it pulls like a train in all gears. Off road no unpleasant surprises,in fact pulled up some hills in third that I have had to scream up in second before.
Low speed in first second all good in the wet and boggy bits and no change in fuel consumption as still same jets.
big bit though,THE FLAT SPOT IS GONE!

many thanks

[doublesixservicestation]

just purchased arrow silencer and header pipes e bay, awsome, see you all at squires, you will here me, or at least my trany before you see me. unless I get ther first hee hee