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Post by rob99 on Jan 12, 2014 21:51:09 GMT 1
Been surfing the net for a while on building your own pipe there is a down load from the states that looks interesting ive got a welder etc some in not affraid of giving it a bash has anyone else tried making there own
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Post by billyboy on Jan 12, 2014 22:44:51 GMT 1
yep ,it aint easy but well worth a go, you going to need some dimensions to make it to that work ,some rollers ,maybe some form mandrels ,made mine out of wood and plenty of patience , what download have you found ? i take it its a tig set you have ? atb
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Post by rob99 on Jan 13, 2014 8:13:57 GMT 1
Yeah i have a tig set at home and im a turner by trade so im half way there lol ive seen an american bit if software that ask for port sizes etc so i will have to map the barrell and do any mods before tryjng to build a pipe buildandclick.com/html/tuned_pipe_v4.htmlI was going to give this a try its looks quite user friendly and from what ive read they are working on improvments all the time so its not just one thats been lnocked up and its never gona work or is that what il be saying when im welding it up lol |
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Post by Norbo on Jan 15, 2014 9:22:35 GMT 1
Id be interested to see how it looks and performs, I don't see why it would not work .
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Post by billyboy on Jan 15, 2014 19:55:34 GMT 1
the software looks good to me ,the fact that it includes the cone calculating programmes make it look good value for money . how will you go about getting the flat cones cut ? laser cutting is the easiest way if you know anybody local, i bandsaw mine but i realise it aint the most accurite way ,have a go i say, as you are an engineer you have every chance of making a nice job
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Post by billyboy on Jan 15, 2014 19:55:50 GMT 1
also if i can you any help feel free to pm me
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Post by Roofmonster on Jan 15, 2014 20:02:35 GMT 1
You should definitely give it a go - the worst that can happen (provided you check your mixture - do plug chops ect) is that it wont improve performance. The advantage of doing a single is that you only have to work on one without trying to match it as on a twin.
You never know - you may become good at making them like TSA.
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Post by quadpanda on Jan 15, 2014 21:16:14 GMT 1
many years ago i made an expantion chamber for a 3.5cc model airplane glow engine! i got the dimensions of an old two stroke tuning book and rolled the tin sections out using a socket extention bar and a hammer, then soldered the lot together. the solder held up pretty well, well good enough for testing anyway. the sound was awesome well maybe not for the ppl next door he-he.
Good luck with your project =)
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Post by rob99 on Jan 16, 2014 13:28:26 GMT 1
Thanks guys appreciate the help and encouragement very supportive
I thought about the cones a bit i could turn them out of solid from work and keep the wall thickness down to say 1/1.5mm then its spot on or i ciuld get some mild steel pipe near the diameter required and slit it and just roll it over a bit more to create a cone or go the pro way and have the print out of the cones made locally
I think the pro way maybe a little costly but its always there if things pick up money wise
Im looking forward to it when i get round to it i realy thought about it because of the lack of pipes available for the 125
Rob
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Post by billyboy on Jan 16, 2014 19:55:06 GMT 1
you would need some bloody great big billets for the belly and diffuser/baffle cones and lots of metal to remove ,but not impossible ,how are you going to make the tapered header pipe ?
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Post by billy on Jan 16, 2014 20:34:59 GMT 1
I modified a stock exhaust, I pretty much just rebuilt everything from the baffle and back.  There was sound damping material inside the baffle aswell, not just at the back of the pipe. Took a while to tear it all out, but eventually I ended up with a proper expansion chamber with no damping bollox inside. I tried to stick to the original length and volume of the pipe, more or less. |
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Post by quadpanda on Jan 16, 2014 21:08:33 GMT 1
i wouldn't bother turning the cones, you can cut, bend and fold and shape quite easy. metal is a very nice material to work with once you get the feel for it.
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Post by rob99 on Jan 16, 2014 21:49:18 GMT 1
Billy boy
We have 4"dia at work if its any bigger ill fall back on the tube method
I work with the stuff all day sometimes I don't like the feel of it lol but I know what you mean.
A stock pipe does have a lot of sound deadening material inside I recently took a resrtriction out of a Mk3 pipe and there was soldiers of mesh looking stuff glued to the sides of the pipe
Tbh I don't know what I'm expecting it spit out diary wise as we all know a micron chamber is smaller than a STD pipe so ill wait and see.
Keep the ideas coming
Oh and and for the header I'm not sure I like the look of angled cut tube type design rather than a mandrel bent down tube don't know about that one the program apparently incorporates this and gives you sizes to print off.
All in all its a project if I can make instead of buying it Ill try
Rob
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Post by rob99 on Jul 17, 2014 19:55:25 GMT 1
Update
Original plan didnt go accirding to plan the software never came good and he failed to deliver so avoid with caution.
I have how ever downloaded one from the android market play store and ive drawn out a scale drawing which is pretty good length and dimensions.
I have some pipe at work that im going manipulate and weld to make my frankenstine pipe ha ha ha ha
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Post by rob99 on Jul 17, 2014 21:20:59 GMT 1
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Post by rob99 on Jul 18, 2014 16:05:28 GMT 1
Made some flanges  Going to make a piece to go into the exhaust port and ill cut it to length on the bike just it sits nicely in the recess with the exhaust gasket and creates a good seal |
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Post by billy on Jul 19, 2014 14:14:19 GMT 1
Looking good. |
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Post by rob99 on Jul 19, 2014 20:16:30 GMT 1
 Got this far but forgot to put the flange well pissed off but live and learn |
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Post by andysh2 on Jul 19, 2014 22:39:18 GMT 1
Thought I recognised your bike mate got a couple of pics of it from Barton Bike night lol :-)
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Post by rob99 on Jul 19, 2014 23:01:47 GMT 1
Cheeky, I went we dad that's why I ended up withthe OAP bikes lol
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Post by mudguts on Jul 20, 2014 18:45:35 GMT 1
This DIY hydroforming looks good
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Post by rob99 on Jul 20, 2014 19:02:33 GMT 1
Ive seen a few vids on that looks interesting i might give it a go later on
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Post by rob99 on Jul 20, 2014 21:55:05 GMT 1
Another couple of hours work   |
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Post by Norbo on Jul 21, 2014 8:41:53 GMT 1
Just keep taking your time you'll get there in the end
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Post by rob99 on Jul 22, 2014 19:13:12 GMT 1
Next pic  |
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Post by rob99 on Jul 22, 2014 20:48:24 GMT 1
On the bike  First attempt at a cone  |
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Post by Norbo on Jul 24, 2014 8:37:20 GMT 1
LOL Looks like a mega phone for shouting at rowers with in a boat race
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Post by rob99 on Jul 24, 2014 8:50:22 GMT 1
Stroke stroke stroke
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urabus
L plate rider.
Posts: 15 
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Post by urabus on Jul 24, 2014 10:57:48 GMT 1
Hi Rob,
Nice project, i follow it with great intrest. it's always nice to see people like who try many things for their passion.
Wich is the expected target with this exhaust?
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Post by rob99 on Jul 24, 2014 15:11:01 GMT 1
Peak rpm is calculated to be 11000 but we will see how it goes ive another cone to make and finnish off my endcan so still a bit of work to go
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