project for Bill ...

[Steve Lake]

Bill, as the fount of all data (some of it quite useful :-) ), i need a dimension .....

As you know, the standard exhaust system/silencer for the SRX (or as yamaha quaintly call it ... muffler) is unobtaneum

well, i finally sold #8 last week, and as i got the bike off the trailer i noticed that one of the clamps (silencer to downpipes) was rotted through.
i pointed this out to the buyer, and promised i'd put a couple in the post to him .... a rash thing to do, as i now find they come with the complete silencer assembly , which of course is as rare as an honest politician !... i.e. doesn't exist.
my man at Tinklers says they keep s/s clamps in stock of all sizes for yamaha but he needs to know the Dia .... and none of the bikes i have here have standard systems on ....  gis us a leg up on this one mate :-).

[themoudie]

  Thank you Ducky! 

Firstly, I assume that #8 is a twin shock and that the muffler/exhaust is  MUFFLER 1, 3GV-14711-00, Replaces 1JK-14711-00

Link: 1986-7_SRX600_1XL_exhaust_parts_list

Neither Sally or the Mono retain their 'original' exhaust systems, so this involves deduction from the O.D. of the remains of the 2 x  GASKET MUFFLER, 3YF1471400, Replaces 2G2-14714-00, still attached to a pair of twin shock pipes hanging up in the workshop! 

O.D. of the GASKET MUFFLER, 3YF1471400 = 38mm  If we assume that the metal thickness of the silencer at the point where the in built clamps are located (exhaust neck) is at least 1mm to 2mm thick, then the O.D. of the exhaust necks are likely to range between 40mm and 42mm. 

Personally, I would make a trip to your nearest "Screwfix" and purchase a pack of 10 of these stainless steel hose clamps, 20mm - 50mm diameter for £10-00. Forward 2 clamps to your customer, maybe after applying a smidge of copper grease to their worms and you then have 8 good quality stainless steel hose clamps for your own stocks!    I doubt if you would be able to attach Yamaha s/s clamps without first removing the pipes from the silencer, which would require new gaskets at the pipe silencer join at £22-15 a pop!   At least with these you just unwind them and then thread them round the silencer neck before tightening and not disturbing the gaskets.    I have used them for holding the Duke carb rubber inlet mount to the carb and the manifold. N.B. they are 12mm wide!

Link: Screwfix_stainless-steel-worm-drive-hose-clips-20-50mm-10-pack

Have a look at the links and see if that makes sense or helps solve the wee conundrum.

Good health, Bill

[Steve Lake]

hi Bill, knew you'd come up trumps :-)
i will see what my chap at Yinklers has in his stores, as he's been so helpful, but it rather sounds like the same as the screwfix assortment, he says they use them on repair jobs in their workshop for all sorts of yamaha exhaust systems .... apparently this is common yamaha practice ... to make the clamps part of the 'muffler' thus a £2 clamp becomes £400 plus .... bloody criminal !
Thanks Bill, you're a star
Trust you n yours are in fine fettle

[themoudie]

Aye Steve,

Thank you for the compliments.

Yes, Yamaha slit the silencer neck, then weld two bits of 2mm wall ms tube either side, or bend up a bit of 1.5mm flat, tack weld it to the neck and a nut on one end; the bolt and washer are £1-38 to you, Sir, in this instance! 

At present firing on all cylinders, thank you. Three days dry afore yesterdays deluge and 'Dorian' later today! Harvest still ongoing, but struggling wi' combines up to the axles. Pea harvesting same problems and tatties barely started. OH! The gutters on the roads and meeting a tracked combine towing a 35' table coming along a drift can be a little sphincter tightening! 

Good health, Bill

Good health, Bill

[Steve Lake]

same problems here with Mr farmer with his assorted stuff being trailed, A) the tailbacks B) crap on roads C) usually unlit and of unknown width
make  the rides a bit of a challenge
pip pip