Was going to drop you a mail on this one, as I have encountered a similar problem.
My old bones have spent a few hours over the weekend lying on a cold garage floor. Have been through various positions of bracket, bands on the chamber being moved in order to get the pipe as far away from the tyre as possible.
I am running a 3.00 x 10 and it is bloody close to the tyre edge, just clears but I am very concerned how close and that there will be a little contact.
I think the angle on the mounting bracket is bent wrongly.
Was thinking by bending it out, it would raise the chamber out wards but resulting in the pipe becoming even closer to the tyre???
Very interested in knowing how you get on with her.
Hey Daz - it is definitely the short section of pipe that mounts to the cylinder that is coming off at slightly the wrong angle. If it were say 4degrees "higher" there would be no clearance issues at all and the mounting bracket that goes to the swingarm would still work ok.
I'm waiting to hear back from Mr GF Project himself. I fear that a glut of orders might have meant he rushed them out a bit....
Earlier in the thread, I have the road version but the mounting bracket for the swing arm I completely did away with as its a pain in the arse to get that bolt in with the wheel on and I put a 'u' clamp style one on instead after making a new bracket out of a small peice of angle iron so you can pull the exhaust away from the wheel just before you nip the bolts up tight, I have'nt tried it with 350 tyre tho.
oK, so just popped round to max's and collected a 3.00 tyre on rim. That gives me one of each to play with a 3.50, a 3.00 and a 90/90. Lined them all up together and in terms of height it would appear that the 3.50 is the tallest, followed by the 90/90 with the 3.00 coming in smallest. They are 3 different brands though so is this a fair comparison?
My old exhaust, a VSP had great clearance with the 3.50 tyre, a good 15mm clear, with the same cylinder & same tyre as I am trying now. Will take some more pics after my dinner...
it may be wider at the tapered section from the barrel mate. The new pipe may have more volume throughout.
Cheers Tony - appreciate it is a wider pipe . What would you specify as being the minimum clearance you would tolerate both on the top and side of a tyre between tyre and pipe? say on a 3.00 for arguments sake?
That 90/90/10 tyre I am refering to as giving bugger all clearance is one of your Dunlops btw!!
Tyres grow a lot at high speed. On a 3.50 you prob would need 8mm depending on hour fast your bike is.. Dunno about a 300. Side, well if the rim is true , hub is then you dont need much. 4mm is fine. You will get movement on the slip joint so move the pipe about on its rubbers and see if you can make it touch. You mani does sound wrong. Personally I reckon mod it yourself. You could probably get some tube same diameter as the stuff he has used and play around cutting angles and so on. You'll get it right.
Post by scooteristforever on Feb 15, 2010 23:47:56 GMT
hope you get the clearance sorted mate, i know its easy for me to say but why the hell dont pipe manufacturers make the pipe to fit around the largest tyre that you can possibly fit that way every permutation is covered.... i realise there is many different kit and pipe configurations out there, but surely the majority of modified scoots run modified (larger) tyres.... in my humble opion the GF pipe looks nice , and certainly good for the money... but why do so many smallframe pipes have poor bracketry... i have a Zadra curly pipe in my garage, it cost £300 and the piss poor mounting bracket is just a bad taste JOKE....
i look forward to hearing how the GF ones perform... keep us posted fellas....
Last Edit: Feb 15, 2010 23:49:17 GMT by scooteristforever
I couldnt agree more with you about the brackets and tyre clearance, its a pisstake especially when swallow is having to sort the manifold himself and its not like its a cheap exhaust either, GF project seem to use a standard smallframe setup to use as a jig as the orange scooter is in the pictures, once its fitted hope your impressed as I was with mine mate
hopefully get it sorted although no reply from GF project yet..... I can't be doing with trying to alter the manifold myself - barely get enough time to work on putting my bike back together as it is!!
Max is asking on et3.it if any of them have had similar problems as I believe a fair few have bought GF pipes. I can't understand anything on that forum - its all greek to me
I think Tony is right when he said you will have to mod it yourself mate, If I was near you I'd do it for ya, I think because they are all hand made the thought for tyre clearance hasnt been done hope you get it sorted chap P.S. Just a thought, I've just been looking at his website and there are two versions of this race pipe but I cannot get my translator to translate so don't know what the difference is but they do look different? especially downpipe.
I know a few blokes with his lardy pipes and they haven't reported any issues, looking at that first pictures it's obviously miles out as you shouldn't be fouling at all with a 3.50 although it could be close. I'm not in the market for an exhaust just now but if there's not a satisfactory outcome from this then he's lost any potential future sale to me.
Black Widdas S.C. - Taking idiocy seriously since 1999.
swallow ...i run 90/90's on me Falc and they creat enough clearance and gears it well ! ! .... The only way around it would unfortunatley be cutting out pieces and rewelding flatter pieces of material in BUT after spending out on a pipe thats the last thing you want to do ..... Maybe run it on 300's and then regear it accordingly ? ? ?