DWMS RACING CB550F SUPER REVERSE PORT! NEW ENGINE COLORS AND PHOTOS!
- Thread starter joeyputt
- Start date
joeyputt
The green flag sets me free
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
Brother 03rangerxlt I have a few cool ideas for the rest of the bike too that I hope you and everyone will enjoy!
Thanks for the coolness win Brother Rocan!
Brother Reinhard the Dremel bit I used for the engravings is part number 107, make sure to read all warnings and wear safety equipment like eye protection, a respirator, gloves, etc. and ckeck out OSHA for the dangers of working with different materials like aluminum, etc. Have fun and be safe!
Brother 03rangerxlt I have a few cool ideas for the rest of the bike too that I hope you and everyone will enjoy!
Thanks for the coolness win Brother Rocan!
Brother Reinhard the Dremel bit I used for the engravings is part number 107, make sure to read all warnings and wear safety equipment like eye protection, a respirator, gloves, etc. and ckeck out OSHA for the dangers of working with different materials like aluminum, etc. Have fun and be safe!
tWistedWheelz
BUILT NOT BOUGHT!
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
WOW, man it was great to come back from a trip and see so much work on this build! I love that header man, it is sick! Also very interesting on the torque curve of an engine with different exhaust lengths! I have never read enough into that, so I now know what I will be researching next! AWESOME! .......very exciting stuff man......now let’s see what’s going to come out of the front! You have me addicted now!
WOW, man it was great to come back from a trip and see so much work on this build! I love that header man, it is sick! Also very interesting on the torque curve of an engine with different exhaust lengths! I have never read enough into that, so I now know what I will be researching next! AWESOME! .......very exciting stuff man......now let’s see what’s going to come out of the front! You have me addicted now!
tWistedWheelz
BUILT NOT BOUGHT!
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
I have missed working on Caroline and keeping up with all you guys! Glad to be back, thanks!
I have missed working on Caroline and keeping up with all you guys! Glad to be back, thanks!
joeyputt
The green flag sets me free
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
Here is a cool old dragster with a reverse ported V8 and a crank driven blower!
http://image.carcraft.com/f/9579792/p135215_large+Buick_Nailhead_Powered_Dragster+Passenger_Side.jpg
Here is a cool old dragster with a reverse ported V8 and a crank driven blower!
http://image.carcraft.com/f/9579792/p135215_large+Buick_Nailhead_Powered_Dragster+Passenger_Side.jpg
IndieSol
"This one goes to eleven." -Nigel Tufnel
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
Love the header. The exhaust looks great, both the polishing and the engraving (very subtle).
The pedal kick starter is cool, and I like the sentimental attachment. Now you can't ever sell the bike. Knowing that, if you ever grow tired of it, I'd be happy save you some shop space by storing it and making sure it gets run every now and again. Or a lot. At high speed.
Love the header. The exhaust looks great, both the polishing and the engraving (very subtle).
The pedal kick starter is cool, and I like the sentimental attachment. Now you can't ever sell the bike. Knowing that, if you ever grow tired of it, I'd be happy save you some shop space by storing it and making sure it gets run every now and again. Or a lot. At high speed.
Swagger
Putting boot to ass since 1967!
Re: DWMS RACING CB550F SUPER REVERSE PORT! POLISHED THE CAN
Pleasep excuse the bad typing I'm doing this on my new droid phone and it's kicking my butt. Those primaries are awfully short, I'd be surprised if it resonates before 20,000 rpm if that. I really don't mean to rain on your parade the fab work looks really good but I think you'll be really disappointed with the performance. you might be able to who it somewhat with rev cones in each runner right at the collector. the problem with that is that I believe it will narrow your band of resonance by probably half though I'm relying on memory right now I'm sure teazer or another expert to chime in with the actual figures.
please forgive my further riffing, however what are you planning for carburation?
Pleasep excuse the bad typing I'm doing this on my new droid phone and it's kicking my butt. Those primaries are awfully short, I'd be surprised if it resonates before 20,000 rpm if that. I really don't mean to rain on your parade the fab work looks really good but I think you'll be really disappointed with the performance. you might be able to who it somewhat with rev cones in each runner right at the collector. the problem with that is that I believe it will narrow your band of resonance by probably half though I'm relying on memory right now I'm sure teazer or another expert to chime in with the actual figures.
please forgive my further riffing, however what are you planning for carburation?
IndieSol
"This one goes to eleven." -Nigel Tufnel
Re: DWMS RACING CB550F SUPER REVERSE PORT!
As I've mentioned, I'm in no position to judge the effectiveness of this endeavor. I'm simply too green. I must say, though, that looks bad ass.
I am loving the debate, and it's all getting stored in the noggin.
As I've mentioned, I'm in no position to judge the effectiveness of this endeavor. I'm simply too green. I must say, though, that looks bad ass.
I am loving the debate, and it's all getting stored in the noggin.
Re: DWMS RACING CB550F SUPER REVERSE PORT!
Swagger is correct that the length of those non-equal length primaries is unlikely to be close to resonant length. Of course the pipe after a collector is almost important and should be at least the same length as the primaries and I'm not sure what the plans are for that, so it's hard to provide much input.
But let's keep this in perspective. Joe has told us many times that this project is not about performance and small intake valves, large exhaust valves are a testament to that. But it really isn't about performance. It's about doing something different and looking cool.
BTW I tried writing that 3 different ways and I can't make it read nice. It looks like I'm being snarky which is not the intent. It will be what it will be and I'm sure it will achieve the design intent.
Swagger is correct that the length of those non-equal length primaries is unlikely to be close to resonant length. Of course the pipe after a collector is almost important and should be at least the same length as the primaries and I'm not sure what the plans are for that, so it's hard to provide much input.
But let's keep this in perspective. Joe has told us many times that this project is not about performance and small intake valves, large exhaust valves are a testament to that. But it really isn't about performance. It's about doing something different and looking cool.
BTW I tried writing that 3 different ways and I can't make it read nice. It looks like I'm being snarky which is not the intent. It will be what it will be and I'm sure it will achieve the design intent.
Re: DWMS RACING CB550F SUPER REVERSE PORT!
Ah hem. (Asking quietly)
If the exhaust tubes wouldn't fit in a 4 banger engine bay, how will the intake system fit in that same non-existent space? I realize it's a crazy set up with the blower on the nose of the crank instead of on top of the Vee, But it's just a little long/wide to fit into anything.
Just being boring practical again.
Rocan said:fuck that dragster is NUTS! now, i could see that being totally useful in a little rear engined hot hatch that can fit a v8 but cant fit the tubing
Ah hem. (Asking quietly)
If the exhaust tubes wouldn't fit in a 4 banger engine bay, how will the intake system fit in that same non-existent space? I realize it's a crazy set up with the blower on the nose of the crank instead of on top of the Vee, But it's just a little long/wide to fit into anything.
Just being boring practical again.
joeyputt
The green flag sets me free
Re: DWMS RACING CB550F SUPER REVERSE PORT!
Brother Teazer is correct that this build is about the cool factor and not performance advantages. I have never seen a true reverse port motorcycle built and have always wanted to build one so here it is being done!
I will be swapping the valves, etc. and will post the photos as I do it. I need another week or so to pull measurements and work out the frame design before I take the engine back out of the cradle and remove the head.
I am educated, but am not an expert, in exhaust design and although a reverse port cb550 engine has never been built for us to study the exhaust on naturally I believe that the exhaust must work properly and am open to discussion on ideas and theory.
This exhaust header is built from 1 1/4 inch tubing and the two center tubes are roughly two inches shorter than the outer tubes in length. The collector and mid pipe are two inch pipe and from pulling measurements today it looks like the mid pipe will be very close to the same length as the header. So basically the exhaust will be the 1 1/4 inch tubing header into a 2 inch collector/mid pipe of equal length to the header and into the can. I will have to measure the cans outlet pipe. The header and mid pipe will be welded into one piece with no reduction or clamps.
I believe it will perform well enough for what it will be but I am open to input on enhancing its performance. There are lots of little things that can be done in the collector and in the pipe as well.
I am open to input and ideas.
teazer said:
Brother Teazer is correct that this build is about the cool factor and not performance advantages. I have never seen a true reverse port motorcycle built and have always wanted to build one so here it is being done!
I will be swapping the valves, etc. and will post the photos as I do it. I need another week or so to pull measurements and work out the frame design before I take the engine back out of the cradle and remove the head.
I am educated, but am not an expert, in exhaust design and although a reverse port cb550 engine has never been built for us to study the exhaust on naturally I believe that the exhaust must work properly and am open to discussion on ideas and theory.
This exhaust header is built from 1 1/4 inch tubing and the two center tubes are roughly two inches shorter than the outer tubes in length. The collector and mid pipe are two inch pipe and from pulling measurements today it looks like the mid pipe will be very close to the same length as the header. So basically the exhaust will be the 1 1/4 inch tubing header into a 2 inch collector/mid pipe of equal length to the header and into the can. I will have to measure the cans outlet pipe. The header and mid pipe will be welded into one piece with no reduction or clamps.
I believe it will perform well enough for what it will be but I am open to input on enhancing its performance. There are lots of little things that can be done in the collector and in the pipe as well.
I am open to input and ideas.
tWistedWheelz
BUILT NOT BOUGHT!
Re: DWMS RACING CB550F SUPER REVERSE PORT!
Joey, I think you could get much closer to equal length if you cross the two inner pipes of the header too, and it will give you a cool tWisted (hehe) look!
Joey, I think you could get much closer to equal length if you cross the two inner pipes of the header too, and it will give you a cool tWisted (hehe) look!
joeyputt
The green flag sets me free
Re: DWMS RACING CB550F SUPER REVERSE PORT!
Brother you know I am all about some "tWisted Designz"! Hehehehe!
I want to use the existing header as I really like the looks of it. The two inch mid pipe is probably a little too large but again I like the look. I could run a sleeve on the inside of it, run reverse cones, etc. I know that back in the day a lot of guys used to drill a hole straight through the header pipe and drop a nail through it and weld it in place, I am not sure what that does but it must offer some advantage as it is still illegal to do in our round track racing rule book.
tWistedWheelz said:
Brother you know I am all about some "tWisted Designz"! Hehehehe!
I want to use the existing header as I really like the looks of it. The two inch mid pipe is probably a little too large but again I like the look. I could run a sleeve on the inside of it, run reverse cones, etc. I know that back in the day a lot of guys used to drill a hole straight through the header pipe and drop a nail through it and weld it in place, I am not sure what that does but it must offer some advantage as it is still illegal to do in our round track racing rule book.
