DanielO's Honda Elite Sprint/Drag Scooter!

It's show and tell for your custom scoot! Post photos of your project scooters, etc.

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wireburn
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Postby wireburn » Sat Nov 24, 2012 4:55 pm

There is another method you could try for the header section. Now, I've seen this done, but never tried it. What you do is cut the metal "like two bananas" in the approximate turn and taper that you're gonna need, fold up the sides so you can seam weld them together, and having left plenty of material on either end, seal off the large end and weld a nipple to the other end so you can hook up a pressure washer to it. Sounds dangerous, but it really isn't. As long as there's no air trapped inside, even if it bursts it won't explode, if that makes sense.

Check it out: http://www.youtube.com/watch?v=I_Z3AIFSd60

-Mike
2007 Ruckus BIG BORE
2002 Metropolitan II w/Ruckus Swingarm
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DanielO.
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Postby DanielO. » Sun Nov 25, 2012 1:42 am

Yeah I've seen that video, and have totally considered doing it that way... we even have a good pressure washer... I ain't skeered :lol:

so far doing it this way hasn't really been what I'd call hard, just really tedious... and It would go much easier with a throatless shear like a beverly instead of just aviation snips...a good cone shaped anvil instead of just a piece of bar stock and if I had a bit more material to spare... always much to be said for having the right tools for the job...

190mech
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Postby 190mech » Sun Nov 25, 2012 7:16 am

I've been using 8-9 degree angles with about 25-27mm cone lengths for head pipes,5 sections will give about 90 degrees.Not the smoothest bend,but waay less work!
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DanielO.
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Postby DanielO. » Sun Nov 25, 2012 1:45 pm

Awesome! that looks excellent... I tried using sections more like that and wound up needing a tighter radius to the bend...my underseat bucket is pretty close to the cylinder... it took a couple tries with cardboard before I got the right combination to put into metal... If I was building for someone else I would most likely do it with fewer sections...

Josh has a couple pics of the first 10 sections and the flange I made... I still don't have a way to upload pics... Maybe I can get him to post them if he gets a minute or two sometime soon...

There's another site I found a while back about hydroforming,
http://www.two-stroke-addicts.freeserve ... ropipe.htm
looks like he's been doing it that way for some time... really nice results..

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Areomyst
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Postby Areomyst » Sun Nov 25, 2012 2:00 pm

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"The more a man learns, the more he realizes how little he knows."

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Areomyst
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Postby Areomyst » Sun Nov 25, 2012 2:01 pm

I thought I had a close-up of the header, but I don't. :(

~Josh
"The more a man learns, the more he realizes how little he knows."

DanielO.
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Postby DanielO. » Mon Dec 03, 2012 2:21 pm

Well, I didn't get my new pipe finished in time to go to the track yesterday... but I still had not made any passes with the new gears.. I knew I was going to lose some bottom end, but not that much... basically, I gained 5mph in the 1/8 mile.. I went 49.75 mph but my ET was almost identical to before in the low 12.7s...

my launch went to hell, and I noticed that when the clutch engages the belt is riding 1/2 inch down in the rear pulley.. basically trying to launch in 2nd or 3rd gear...

this morning I put a yellow 2500 rpm spring on the torque driver and that helped, but now the rpm is hanging up a little too high... the launch is better but I think it could be better still... and I gotta make the engine like being at the higher rpm... I want to raise the exhaust timing, and that may require a slight redesign of the unfinished pipe...

much work to be done, but some other 4 wheeled projects need attention first.. there's also a 500cc two stroke honda waiting on a top end and a 600cc yamaha needing some love.. I'll keep y'all posted as progress is made

DanielO.
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Postby DanielO. » Sat Dec 08, 2012 6:15 pm

Finished the pipe earlier this week, got it mounted up and tested on the dyno today... made 9.6~9.8 hp and 5.6 tq at 9500rpm with at least one spike over 10hp... It's also still making 7hp at 11000rpm whereas before it would simply not rev past 9500... Seems like it might be a tad lean at the top end but cyl head temps never went over 350 degrees f ... gonna clean the carb tonight , make sure the fuel tank valve is working and put a bigger main jet in... Then we'll see what she does at the track tomorrow!

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Areomyst
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Postby Areomyst » Sat Dec 08, 2012 11:29 pm

Daniel brought his scooter by and did a little CVT work today. His new pipe is doing well! Certainly better than the previous one, and I am curious to see the difference on the track!

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How many hours of work were put into that header pipe? Nice job dude!
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I'll let him elaborate more. :)

~Josh
"The more a man learns, the more he realizes how little he knows."

DanielO.
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Postby DanielO. » Sun Dec 09, 2012 12:35 am

Thanks man! I did find a big crack in the pipe about 2 inches from the flange when I got home tonight... it went almost 3/4 of the way around so all that was done with a huge leak... :shock: I welded it back up with the mig so it looks like hell but I really don't care... got both bolts back in the bracket now, so hopefully it will last through tomorrow without cracking again.....

I'm wondering now if that might have been the cause of the hiccup on the top end during the last couple runs... :? dosen't matter now, its fixed... carb jetted up one size, tank cleaned and mychron mounted lower and out of the airstream...

still gotta take a look at the clutch, and I was trying to put a kickstand on but the one i have just dosen't lend itself to mounting to that frame...

p.s. the dyno graph Josh posted was the very first run, which was with a blocked variator... later runs with weights in gave the slightly higher numbers I quoted...

DanielO.
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Postby DanielO. » Sun Dec 09, 2012 10:13 pm

Managed to go 11.9 seconds at 55.38mph with a terrible launch... Josh and Mike both did really well, I think Josh also got a best time and speed... Mikes Ruckus was outrunning me consistently and generally ran well all day... had a great time!

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Areomyst
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Postby Areomyst » Fri Dec 14, 2012 9:53 am

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Better every time Daniel!

We need to get DirtyD out with us next season. :)

Cheers!

~Josh
"The more a man learns, the more he realizes how little he knows."

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Postby SLOWRIDER » Fri Dec 14, 2012 6:07 pm

I'm inspired guys so i will get an old favorite back on the track, and post the results.


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I have a few motors to choose from Piaggio 125, Piaggio 70, gilera 180, the 125 is ready, ported cases, ported cylinder, MHR pipe, 28mm dellorto just needs ignition. I just needed a project to use it on. And i need a break from track work.

Keep up the good work and keep posting the results.
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Areomyst
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Postby Areomyst » Wed Dec 19, 2012 10:56 am

SLOWRIDER wrote:I'm inspired guys so i will get an old favorite back on the track, and post the results.

I have a few motors to choose from Piaggio 125, Piaggio 70, gilera 180, the 125 is ready, ported cases, ported cylinder, MHR pipe, 28mm dellorto just needs ignition. I just needed a project to use it on. And i need a break from track work.

Keep up the good work and keep posting the results.


You're probably going to be a lot faster than us! Especially with a Piaggio. OveRReV was running something like 10.5 in 1/4 mile with his 2fast Jog. Twice the distances as us 1/8 mile sprinters and lower times too.

I'm very very excited to see Daniel's new results. He ported his cylinder yesterday, and it looks a lot better than it did before. He didn't even go very extreme with it - just raised the exhaust to 190 and transfers to 130 (please correct me if I'm wrong Daniel!) and widened the exhaust and transfers a little. The results will be interesting for sure! I'm certain that his power will be up - but how much? I suppose we'll find out soon. :)

I've got a few photos of the work. I'll post them later on.

~Josh
"The more a man learns, the more he realizes how little he knows."

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Areomyst
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Postby Areomyst » Fri Dec 21, 2012 12:28 am

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Daniel, getting ready to port his cylinder.

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I should have gotten some more pictures that more clearly showed the difference. He worked on the cylinder for the better part of the day, and did a nice job with it.

:)

~Josh
"The more a man learns, the more he realizes how little he knows."


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