|
|
Post by bummers on Jan 3, 2012 4:07:24 GMT 1
What is the actual difference between 250LC & 350LC standard pipes? I've got several pipes with no markings on the rear mounting bracket. What am i looking for even if I have to cut the pipe open & re-weld it?  |
|
|
|
Post by oldelsieboy on Jan 3, 2012 11:03:37 GMT 1
What is the actual difference between 250LC & 350LC standard pipes? I've got several pipes with no markings on the rear mounting bracket. What am i looking for even if I have to cut the pipe open & re-weld it? If there is no "0" stamped on the rear of the hanger bracket than they are 250 pipes. AKAIK the only internal differences are the amount of holes drilled in the baffle plates. 4no 10mm holes = 250 8no 10mm holes = 350 HTH OEB |
|
|
|
Post by bummers on Jan 3, 2012 11:47:36 GMT 1
Thanks OEB,
So...
If I removed the baffles & timed how long it took for, say, 5 gals. of water to flow through the pipes
- the pipes that flow faster should be 350 pipes.
Any holes in that theory?? (There's a pun there ;D)
|
|
|
|
Post by bummers on Jan 3, 2012 11:49:41 GMT 1
Maybe I need to leave a baffle in? The same one each time? |
|
|
|
Post by tunneruk on Jan 3, 2012 12:56:43 GMT 1
Can you not see the baffle plate when the baffles are removed?
I've never shone a torch down mine ..........
|
|
|
|
Post by bummers on Jan 3, 2012 13:29:58 GMT 1
I think I better go to the shed ....  |
|
|
|
Post by bummers on Jan 3, 2012 14:46:59 GMT 1
I couldn't see much. - The first baffle I pulled was followed by a length of round tube; I guess an internal "stinger' positioned before the baffle? I could see 3 concentric rings that hold the baffle in place but I couldn't see any holes in them.
- The 2nd baffle broke off inside the pipe.
- The 3rd baffle - from a pipe I'd got off a wrecker marked RD350, came out quite easily but the pipe seemed to have another, broken off, baffle inside.
I'll check some of the other pipes tomorrow. |
|
|
|
Post by nikfubar on Jan 3, 2012 16:47:09 GMT 1
Forgive my ignorance  but does Bummers mean something else in Oz |
|
|
|
Post by tunneruk on Jan 3, 2012 19:23:54 GMT 1
I couldn't see much. - The first baffle I pulled was followed by a length of round tube; I guess an internal "stinger' positioned before the baffle? I could see 3 concentric rings that hold the baffle in place but I couldn't see any holes in them.
- The 2nd baffle broke off inside the pipe.
- The 3rd baffle - from a pipe I'd got off a wrecker marked RD350, came out quite easily but the pipe seemed to have another, broken off, baffle inside.
I'll check some of the other pipes tomorrow. It sounds like you've got a lovely collection of pipes there! |
|
|
|
Post by bummers on Jan 4, 2012 6:18:30 GMT 1
It sounds like you've got a lovely collection of pipes there! ♠ 4 x RHS, 2 x LHS all in roughish condition but nothing a coat of paint won't fix but I can't figure out which are 250 or 350. I removed all the baffles peered inside to see nothing obviously distinguishable. All pipes seem to have 4 (NOT 3 as I previously mentioned) concentric steel rings which support the baffle but I can't see any holes in baffle plates. I can't find any "0" stamped on the rear hanger bracket nor paint markings. Where is the "0" supposed to be - on the inside the bracket or outside? Have I missed something? |
|
|
|
Post by bummers on Jan 4, 2012 6:21:05 GMT 1
Forgive my ignorance but does Bummers mean something else in Oz something else? other than? No, I'm not gay. Tho I've got a mate who races a gay RD  |
|
|
|
Post by oldelsieboy on Jan 4, 2012 8:17:21 GMT 1
It sounds like you've got a lovely collection of pipes there! ♠ 4 x RHS, 2 x LHS all in roughish condition but nothing a coat of paint won't fix but I can't figure out which are 250 or 350. I removed all the baffles peered inside to see nothing obviously distinguishable. All pipes seem to have 4 (NOT 3 as I previously mentioned) concentric steel rings which support the baffle but I can't see any holes in baffle plates. I can't find any "0" stamped on the rear hanger bracket nor paint markings. Where is the "0" supposed to be - on the inside the bracket or outside? Have I missed something? Info lifted from the RD/RZ Forum (thanks to Kev, redbimota) RD350 LC with the 8 holes is the baffle plate near the rear hanger  RD350LC showing 8 holes and where Kev has cut the pipe in front of the Hanger  RD250LC with 4 holes in baffle plate  The 0 is stamped on the inside of the hanger bracket 350 pipe  250 pipe  HTH OEB |
|
|
|
Post by arrow on Jan 4, 2012 8:22:47 GMT 1
So is there any way of modifying the baffle instead of trying to mod. those holes ? |
|
|
|
Post by oldelsieboy on Jan 4, 2012 9:17:39 GMT 1
So is there any way of modifying the baffle instead of trying to mod. those holes ? Dont think Mr Yamaha would have gone tho' all the fuss of making different pipes for the 250 & 350 if it was as easy as modding the baffles. OEB |
|
|
|
Post by arrow on Jan 4, 2012 9:20:15 GMT 1
In the picture the gas still comes through the big center hole correct ?
|
|
|
|
Post by bummers on Jan 4, 2012 9:26:54 GMT 1
Thanks OEB - you are a gentleman!
I'll have to have a closer inspection!
|
|
|
|
Post by arrow on Jan 4, 2012 9:37:39 GMT 1
So is there any way of modifying the baffle instead of trying to mod. those holes ? Dont think Mr Yamaha would have gone tho' all the fuss of making different pipes for the 250 & 350 if it was as easy as modding the baffles. OEB I would have taken a more logical approach. Surley it is much easier to put one of two simple pressed out discs into a jig during manufacture than to re-design a complex baffle ? Going on the assumption the discs are the only differance. |
|
|
|
Post by oldelsieboy on Jan 4, 2012 14:03:04 GMT 1
In the picture the gas still comes through the big center hole correct ? The removeable baffle locates thro' the central hole & I assume some gases bypass the end of the baffle by passing thro' the outer holes. OEB |
|
|
|
Post by arrow on Jan 4, 2012 14:56:37 GMT 1
Ok,  |
|
but does Bummers mean something else in Oz 
