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Post by Dandy Dan on May 19, 2005 12:09:06 GMT -5
It's here! The shipping from the BSS always amazes me. I ordered it last thursday and it came yesterday so if abe got it out the same day I ordered it, then it was just 4 days.
My first impression was 'Wow that is tiny' the cam is like the size of my thumb. I was picturing something bigger. It cam came with some cool bearings for both ends of the cam and a tube of something that is for 'cam use only'. Anyone know what that might be? (Can you tell you speaking with a rookie here??). I was also surprised how dark the metal is. It's almost like they carved it out of a peice of coal (actually it looks more like magnesium).
Abe also included 2 cool stickers. One was really big and fancy Japanese writing with paper on both sides and the one was a pic of car with a red circle around it and a slash through it with battlescooter writing around the outside. I also got a free black Tee to go with the free grey one I got earlier.
Install is planned for next saturday the 28th.
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Post by jimthejet on May 19, 2005 21:21:29 GMT -5
It's here! The shipping from the BSS always amazes me. I ordered it last thursday and it came yesterday so if abe got it out the same day I ordered it, then it was just 4 days. My first impression was 'Wow that is tiny' the cam is like the size of my thumb. I was picturing something bigger. It cam came with some cool bearings for both ends of the cam and a tube of something that is for 'cam use only'. Anyone know what that might be? (Can you tell you speaking with a rookie here??). I was also surprised how dark the metal is. It's almost like they carved it out of a peice of coal (actually it looks more like magnesium). Abe also included 2 cool stickers. One was really big and fancy Japanese writing with paper on both sides and the one was a pic of car with a red circle around it and a slash through it with battlescooter writing around the outside. I also got a free black Tee to go with the free grey one I got earlier. Install is planned for next saturday the 28th.  Dan, I'm guessing that the tube is installation lube, which would insure lubrication to the contact surfaces until the oil pump provided pressurization. Are the bearings pre-lubed? I guarantee it is not magnesium (or coal). Possibly the Mfg. Abe found is using that rare earth material, unobtanium! Anyway, good luck and let us know how it does. |
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Post by Dandy Dan on May 19, 2005 23:17:19 GMT -5
Yeah my bro is guessin it's lube too. He says when you first fire up an engine with a new cam it puts on a ton of wear right away if you don't add any lube because it dry metal on metal.
The bearings are pretty cool and they appear to have some lube on them. They slide really nice. You probably know this but they look like two rings, one inside of the other with little balls and stuff between em. Too bad I won't have this puppy installed for over a week.
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SuperJ
n00b Ruckster
Posts: 28
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Post by SuperJ on May 27, 2005 23:47:46 GMT -5
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Post by Ruckass on May 28, 2005 2:56:14 GMT -5
Remember towrite up some reviews of the performance of this cam when you guys get it installed. I'm still thinkin on gettin one.
Ruckass
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Post by Dandy Dan on May 28, 2005 8:08:07 GMT -5
No problem. I've got then engine out now and I'm taken pics. Port and polishing starts in 30min. Hopefully I'll have er together and screaming by supper. I've got a busy evening so unless things really go well I won't have it up today. Maybe tomorrow, monday at the latest.
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Post by Dandy Dan on May 29, 2005 0:18:22 GMT -5
Update: I got everything back together. I'm really happy with how the port/polish job went. Also I was able to remove the valve springs without a compressor and get the seals cut down. I got almost everything together now except the floorpanel and front cover cuz I have carb work to do. I intially tossed a 95 jet in but it appears to be significantly rich. Anyways, expect a full 'how to' and a review of the performance change in a day or two.
The only thing that I'm concerned about is that there's a ticking coming from the engine. It sounds like a valve gap is too big but that isn't so cuz I've carefully reshimmed and rechecked them. As well the timing chain has had it's tightness carefully adjusted so there shouldn't be anything wierd there either. There was a slight ticking before the engine mods so it could just be my imagination that it's louder but regardless, I'd like to get it figured out. Any suggestions would be welcome.
P.S. Chanito: I noticed you're from Miami. Cool stuff! I was down there about 3 weeks ago on a road trip with some friends. There sure were a lot of scooters along Miami beach but most looked pretty cheap. I didn't see a single Ruckus.
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Post by Dandy Dan on May 30, 2005 11:25:03 GMT -5
Well things are going pretty good. I've got everything back together and the ticking solved. I asked a bunch of mechanics I know and they all said it had to be the valve gaps. I checked again and they still seemed good but I stuck a fatter shim in anyways and sure enough, problem solved. I musn't have been at top dead center. The thing with the new cam is that it's higher lift but that increased lift doesn't just come from taller lobes. The lobes are slightly taller but the minimum radius when the lobe isn't pushing on the rocker arm is smaller. This means you need fatter shims to make up for the decreased minimum radius. The lift on a cam is the not just how much taller the lobe is it's the difference between the minimum radius and the max. I have the #'s somewhere but the total increase is about .3-.4mm. As well the rocker arm has about a 1:2 leverage ratio so this difference results in an actual lift increase of about .7mm for the valve opening. The cam is also much longer duration. You can easily visually see that the lobes are much more blunt shaped.
What everyone wants to know I'm sure is how fast does it go. Well the answer is I have no idea. I initially fired it up with a 95 jet as a guess. It turned out to be way rich and I could get up to about 33mph. Next I slapped a 90 jet in there and top speed rose to about 43mph. That's ok but that's what I was doin before. The scoot is still obviously rich however. It runs pretty sluggish across the board. I didn't have time to try an 85 cuz I had to head to school and I'm there now for the day but tomorrow afternoon I'll finish messing with the carb (Hopefully) and likely get the variator geared taller too. I'll post a big how to thread later tomorrow along with results.
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Post by chanito on May 30, 2005 12:38:13 GMT -5
Congrats Dandy, i wish you emailed me before so we could have done something here in MIami, anyway, in south beach there are a lot of scooters but mostly are chinese rentals or expensive european models, looking forward to you how-to. 
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SuperJ
n00b Ruckster
Posts: 28
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Post by SuperJ on May 30, 2005 23:51:39 GMT -5
  A pic from the disassembly process. Dan, you should decrease your roller weight size to get the revs up a bit too. Thats where most of the power increase will be I bet. The how-to is coming. It won't be for mechanical newbies though. There are too many things that you can mess up (cam timing, wrecking your head in a porting attempt, torque values, lots of wires and hoses) to attempt this install with no mechanical background. -SuperJ |
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Post by Dandy Dan on May 31, 2005 9:23:34 GMT -5
My roller weights are already 6-6.5g so there isn't a ton of room for improvement. Did you drive my ruckus? It feels sluggish cuz it's running quite rich. It's wierd actually. It still gets up to 70km/hr (43mph) but it feels more like a big diesel chuggin up there. I hoping to get it singing this afternoon.
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Turkish
Junior Ruckster
03 NPS50, Daytona virator, Boppers, B&S air filter, chopp'd signal & horn brackets, Showa shock
Posts: 96
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Post by Turkish on May 31, 2005 10:31:10 GMT -5
Man Danny you that man, you machine is gonna rawk!
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nicad
Ruckster
Posts: 174
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Post by nicad on May 31, 2005 10:59:41 GMT -5
We need pictures of this wicked bike Dan, post haste.
-Ian
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Post by Ruckass on May 31, 2005 19:40:00 GMT -5
Sweet! Cant wait to see what the end result is.
Ruckass
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Post by Dandy Dan on May 31, 2005 23:16:50 GMT -5
Well I worked on it all afternoon and I made some head way but I still have a lot of fine tuning to do. I filed the outside variator plate lip a bit to get it a bit taller plus I got my valve shimmed really nice so the motor purrs without any ticking. The only thing I have got yet is more power. It's not because I've got it running good and it just doesn't go faster, the problem is I can't get it running good. Before the mod I was running an 85 jet which was a hair lean but pretty good. After a 95 was ridiculously rich and it coughed its way up to 30mph. A 90 was better and went 42-43mph but it still seemed to be running poorly (I was too rich still) so today I tried an 85 and it was WAY to lean, I had to cover 1/2 the intake to get things going and it didn't get much better as the speed climbed. I'll likely be spending quite a bit of time tomorrow trying to figure it out. That's why I didn't get the how-to posted today.
In other news make sure you replace your headgaskets kids. I forgot to order one in advance and decided to just apply some gasket maker to the old one to get it to seal but no dice. Today I noticed a few drops of oil coming from that seam. Hopefully I can have one by the weekend and install it saturday. I wouldn't mind goin back in there anyways to check everything and do a bit more polishing.
More news as it happens.....
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Post by Robo-Mod on Jun 1, 2005 17:00:35 GMT -5
Hey Dan,
Could you adjust your air intake?
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Post by Dandy Dan on Jun 2, 2005 0:41:16 GMT -5
I could adjust the intake but I'd rather adjust the carb. My thinking is getting as much air as possible flowing through and then adjust the carb accordingly. If I were to set things slightly lean I could somehow cover some of the intake but then I wouldn't have max power.
I have made some more progress in the power department. It seems like an 85 jet is really lean off the line and through the midrange but only sorta lean up top. Tonight I was able to cruise about 44mph with blasts into the mid 50's down hills (I was able to get the needle touching the top right corner of the odometer). When I drive it with an 85 everything inside me screams that it'll run perfect with a 90 but then I go and throw one in and it just bogs. It's an amazing difference to go from cutting out from being too lean to hardly being able to move cuz I'm rich with just one jet size. Next I'm gonna try a 90 but take out needle shims and after that I'll try making a 87.5 jet with the extra 75 jet I got laying around. Eventually I get er goin!
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Post by chanito on Jun 2, 2005 20:03:07 GMT -5
 I think you should buy a diaphram spring, clip a couple of coils and keep the 85 jet, i will be in Philly for the weekend, and i am going to miss these updates 
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Post by Dandy Dan on Jun 2, 2005 20:53:56 GMT -5
Well here's my latest set up that's running better than ever but still so-so: - No Shim - 2 Coils off Diaphram spring (I ordered another) - 90-95 jet The 90 seems better in hot weather and the 95 at night. I've got it revvin pretty low right now through the low end/ midrange because I put stock weights back in and filed the outer plate down. This way I can get it adjusted for all rpms and to ensure I'm gettin right to the top gear. Then I a few weeks I'll throw lighter rollers in. It would probably be easier to adjust if I had lighter rollers cuz I wouldn't really be using the 0-6000 rpm range but I'd like to have it totally dialed. Basically I've decided the 85 with shim was alright off the line but just too lean up top. I am getting to about 46mph with my current setup. I also have the engine absolutely purring. The valve gaps are so good and the revs aren't screaming plus its a bit rich up top (with the 95) so it has a nice soft purr when I'm driving. My current setup rocks 20-40mph but it seems a bit off outside that. I think my dream setup might be a 92.5 jet with nothing else. I think the shortened diaphram spring I have now is cramping the low end and the 95 jet is just a bit rich for the top end. More news as it happens. I did write up the install guide today and I have all the pics up loaded to photobucket.com (you can see the pics at photobucket.com/albums/y210/dandurston/) however ruckuscentral was giving me the 'too many connections' crap so I copied the messgae to a word file and I'll try and repost later. (I'm at school right now and the files at home) |
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Post by Dandy Dan on Jun 5, 2005 0:32:15 GMT -5
I am now happy with my carb setup. It took me a week but I'm happy. I'm running a 90 jet with no shim and 2 loops off the diaphram spring. I'm gonna order a new spring this week and compare but until then it's running good. With this setup I'm running at 46mph. As expected, the performance gain is primarily in the higher RPMs (at stocker makes its max 4.9hp at the 8000 rpm redline) so with my current variator setup I'm not really using it at lower speeds but I'll get that adjusted. I've got the spacer at 35mm (from about 36mm) and I filed about 2mm off of the outer variator plate. This is pretty well as tall as possible gearing. I'm hoping to buy a tach in the next day or two (I've got my eye on one) and then I'll play with the roller weights to get er dialed through the midrange.
Here's some fun cam stats for ya:
Intake
Min. Diameter = 25.19mm (stock), 25.11mm (H.O.)
Max. Diameter = 29.28mm (stock), 29.53mm (H.O.)
Lift (Max-Min) = 4.09mm (stock), 4.42 (H.O)
Total Difference = .33mm
Note: Rocker arm is approx a 2:1 ratio so your valve opens about .66mm farther. (Perhaps more significant is that the lobe is much fatter so the valve is open further longer). I'm no expert on cams but I would be surprised if Honda built in a gap of less than .66mm between the valve seal and whatever hits it. Because of this I suspect it may not hit but abe said it does so I guess....
Exhaust
Min. Diameter = 25.11mm (stock), 24.95mm (H.O.)
Max. Diameter = 29.28mm (stock), 29.35mm (H.O.)
Lift (Max-Min) = 4.17mm (stock), 4.40 (H.O)
Total Difference = .33mm
Increase in valve opening (assuming 2:1)= 0.66mm
All measurement were taken with a digital caliper thing (Caliper sounds wrong cuz that's a brake part....not sure what the word is) and should be accurate +/- a couple hundreds of mm.
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