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Post by smallyshane on Feb 15, 2010 9:11:43 GMT
gutted for you mate, Its been long enough in coming without having fitment problems...
hope you get it sorted soon, without having to wait another 2 months for a replacement...
;D
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Post by tango135 on Feb 15, 2010 10:15:29 GMT
If you have the race version you will deffo need at least 25mm and a short fourth.
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Post by daz on Feb 15, 2010 12:59:45 GMT
Afternoon Tom 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. Daz.
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Post by swallow on Feb 15, 2010 14:37:32 GMT
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....
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Post by eean on Feb 15, 2010 18:10:51 GMT
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.
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Post by tony on Feb 15, 2010 18:50:47 GMT
tom, will 4 degrees still clear the body? If so cut it off mark it and get it re welded. Most exhausts are jigged around a 300x10 tyre. I think even the falc one is.
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Post by swallow on Feb 15, 2010 19:13:53 GMT
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...
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Post by tony on Feb 15, 2010 19:39:13 GMT
it may be wider at the tapered section from the barrel mate. The new pipe may have more volume throughout.
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Post by swallow on Feb 15, 2010 19:55:49 GMT
Just fitted three different tyres and measured the clearance (if any) over the top of the tyre and also the side of the tyre as the pipe curves around it.
Top Clearance with 3.50 tyre = 00mm, Side Clearance = 00mm Top Clearance with 90/90/10 tyre = 03mm, Side Clearance = 00mm Top Clearance with 3.00 tyre = 10mm, Side Clearance = 2mm
3.00 tyre gives nice top clearance but I wouldn't run it with that tight a gap on the side, tyre would either rub when hot or just get cooked pretty quickly.
I reckon the angle of dangle is wrong AND the manifold section is about 5mm too short.
Daz - does any of the above tally with your experiences?
What I dont understand is that surely these pipes are made around some form of JIG? Leads me to think that I am right and the manifold section is just to blame.
anyhow - just emailed the guy with all this info, see what he says.....
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Post by swallow on Feb 15, 2010 20:05:03 GMT
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!!
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Post by tony on Feb 15, 2010 22:59:37 GMT
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.
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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....
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Post by eean on Feb 16, 2010 17:04:25 GMT
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
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Post by swallow on Feb 16, 2010 17:17:41 GMT
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
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Post by eean on Feb 16, 2010 17:23:03 GMT
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.
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Post by Juan on Feb 16, 2010 18:25:49 GMT
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.
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Post by madmax on Feb 16, 2010 20:26:42 GMT
Max is asking on et3.it. I can't understand anything on that forum - its all greek to me Is italian actually! ;D Tom you have a PM or two.
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Post by swallow on Feb 17, 2010 11:43:45 GMT
Reply from GF today - will make me a new manifold, to my specifications. Will have to get measuring then ;D woooohooo Can anyone help me by measuring the distance from the rear hub to the inside of the left bubble, just so I can check the clearance there without mounting my engine for the umpteenth time.... ta
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Post by 225worb on Feb 20, 2010 19:08:58 GMT
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 ? ? ?
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