|
|
Post by broyager on Dec 23, 2023 3:17:00 GMT -5
Some bits arrived super quick from Webike Japan to NZ today, ordered Dec 14th, shipped out on the 19th, in my hand on Saturday 23rd.  The boss is 36.3mm long and for a DIO, but it's like 20.04mm round and the original PGO is 19.96mm Did some porting, here's before and after. Getting closer to the Stage 6 Sport MKII....  Not sure how it goes yet, the sealer is curing. Also when I removed the exhaust, it was obvious how much larger the exhaust opening is than the outlet port on the Malossi, so opened that out to match the dark area, and de-ovaled the inside of the port slightly. I think I might have taken a little bit too much of the port floor, and I was watching this www.youtube.com/watch?v=_M1un_yed8k which indicates adding material on the floor can help with hp. According to a porting calculator I'm using the timings are around 183 120 so I don't think it's anything outlandish yet. Possibly I've opened up the exhaust port too much, hopefully the pipe can evacuate it.. It's happy revving to 9k, I think the power band is just below that before the changes above. Bought some JB weld also, to have an experiment with that as well as rounding the corners on the A tranfers, closest to the exhaust. My fuel usage went up quite a bit recently, so I think I'm loosing a bunch straight out the exhaust, but that's just a theory |
|
|
|
Post by broyager on Jan 22, 2024 22:25:22 GMT -5
Well it's definitely not faster, about the same or slightly behind how it was pulling previously.
Next step will be to lay some JB weld onto the exhaust port floor.
The clutch springs I bought were supposed to be +1000 but are more like +2500-3000 by my estimation.
Unexpected wheelies at lights are not cool...
I'll keep the 5.7g sliders in, but will put the original clutch springs back in for now...
The belt is almost at the edge of the rear pulley at stand still, with what I think is the max addition of washers, without the kick starter washer not being able to bite into the shaft. This probably helped the wheel lifting this morning... but I did not like it. Luckily have been practicing wheelies on a push bike for a few years...
|
|
|
|
Post by 190mech on Jan 23, 2024 6:45:18 GMT -5
JB weld does not do well at exhaust temps, cant handle much more than 500f, welding is the only permanent fix..
|
|
|
|
Post by Lucass2T on Jan 23, 2024 8:19:35 GMT -5
Next step will be to lay some JB weld onto the exhaust port floor. I wouldn't bother. Like John said, you can't JB weld an exhaust port. You need to weld it which is wayyy overkill to tackle a problem that might not even be there. Putting some extra effort on tuning the CVT and carb and reducing overaall weight by taking a good sh#t before you ride will have more effect. |
|
|
|
Post by broyager on Jan 23, 2024 15:18:55 GMT -5
Lol.. ok thanks for tip there (the jb weld)
|
|
|
|
Post by broyager on Jan 25, 2024 16:53:27 GMT -5
I put some 91 innit, was using 95 without good reason really, my squish and temps are not low / high enough to warrant the slower burn.
Also swapped to the shallower angle (the one that spreads the acceleration out more) on the torque driver, and kept all the washers in front of the pulley boss.
It's now running as fast or faster than it ever has, still wants to throw me off if I'm not careful from standstill... and that's with the squishy stock clutch springs.. I need to get some time to test it, so I know what it wants to do, ie not at the lights on the way to work....
I'll take another cm off the end of the snorkle in the airbox, that way I can glue it back on if it doesn't improve things.
|
|
jpskamp1
Scoot Junior
RookieRoughHouse
Posts: 15
|
Post by jpskamp1 on Jan 25, 2024 20:25:41 GMT -5
Is the buddy stock cvt configuration the same as the RH?
Nut, washer, Kickstart ring (splined),drive face, boss, variator, backplate, electric start gear, bushing. (Order from front to back) If so, and u upgraded ur variator, u remove any of those stock components i.e. bushing, washer? Got malossi variator (7g), and yellow contra installed, everything else stock in there. My belt(stock), rides low in back pulley and only goes 3/4 up variator. Lots of space left on variator face. Prior to this week, I'd rip up steep hills. Even if I let off throttle, it'd pick up where it was and keep pulling.
Now, this week, with nothing changed, it won't pull like it was, and if I let off, when I throttle again, no more pull, and feels weak as heck. Struggling to pull, revs are there and it's like it's trying to pull but won't. Also, my take off isn't pulling like it was, normally it'd throw me back, but now not so much. And feel the secondary shift engage a lot more frequently now on take off. Swapshop said clutch pads may be wearing, but clutch has 1000 stock miles and 317 bbk miles on it. Total 1317 miles. Clutch pads go that fast? Got some springs, but wrong ones I believe, malossi hammer reds, be a waste of energy and time to throw those on stock clutch wouldn't it? Any thoughts on this? Appreciate it.
|
|
|
|
Post by broyager on Jan 25, 2024 21:00:41 GMT -5
Yes that order is the same as the stock buddy. The only things I have changed is replace the variator, and added I think it's 1.6mm of washers between the drive face and the boss. That's made the belt ride to between 1 and 2mm from the edge on the back pulley (I might need to check that). Sounds like something is binding, check the boss slides freely in the variator, check your variator guide slides are intact. Also check there is no oil or grease anywhere, especially inside the clutch bell. Check Zino's post in his Roughhouse Build thread 49ccscoot.proboards.com/post/426073/threadI think I've read through that maybe 20 times? Lots of good info, and experimentation you might not have to do etc. My clutch itself is original (I think) stock and the pads are fine, scoot is on 11,000 km's. I like the stock springs, at least now I do, makes it more driveable in traffic, if I had to get stiffer, possibly would go for a stock DIO spring, which seem to be smaller. |
|
jpskamp1
Scoot Junior
RookieRoughHouse
Posts: 15
|
Post by jpskamp1 on Jan 25, 2024 22:58:00 GMT -5
Thx, I've read Zino's thread about 20 times too. Very good info on there. I'm gonna pull everything apart tomorrow. Got my tt temp sensor yesterday. Installing it tomorrow, so imma check everything head to toe. What keeps bugging me tho, is malossi variator kit for the RH has this plastic bushing and nobody seems to know exactly where it goes and I can't figure it out either. (It's not the restrictor, that one goes over the boss, threw that one out) and too thick for a shim...so idk. Thx for the advice and reply.
|
|
|
|
Post by broyager on Jan 25, 2024 23:22:54 GMT -5
|
|
|
|
Post by jackmisanthrope on Jan 26, 2024 9:23:36 GMT -5
What keeps bugging me tho, is malossi variator kit for the RH has this plastic bushing and nobody seems to know exactly where it goes and I can't figure it out either. (It's not the restrictor, that one goes over the boss, threw that one out) and too thick for a shim...so idk. Thx for the advice and reply.[/quote]
The Multivar kit I got for my Roughhouse didn't come with the extra spacer. Its my understanding that bushing is used if you remove your electric start components.
|
|
jpskamp1
Scoot Junior
RookieRoughHouse
Posts: 15
|
Post by jpskamp1 on Jan 26, 2024 11:49:11 GMT -5
Broader, thx, my kit had no instructions. That spacer is for the clutch side. Mystery solved!! Thx for that link.
|
|
|
|
Post by broyager on May 2, 2024 2:27:13 GMT -5
Really pleased to report that my ring wear issue has gone. I pulled it apart cause I thought it was getting a bit rattly again, with the intention of replacing the rings, but they've only worn from 0.3 to 0.35 and 0.36, since I put the C piston in. I thought I was down on power a bit too, but I have a new belt on recently, and the extra width has made it a bit sluggish down low somehow. Power and rev's are still around 9200. Maybe it needs to wear in a bit more. Put it back together with the smaller gapped ring on the top. Still going great. I will replace the rings when I have a bit more time, I want to do some work on the transfer port rooves, raise them a little more, square the corners if I can, and tidy them up. The pattern is interesting on the piston, one side looks great, with the other not so great..      |
|
|
|
Post by broyager on May 2, 2024 2:45:14 GMT -5
Also bought another one of these scoots for $150NZD ($90USD).. Has a seized crankshaft and the cylinder is toast.
No damage that I can see to the crankcases, so should be a fairly straight forward job to sort that out.
Needed an exhaust too, and I just happen to have a spare..
Also have a set of new bearings and seals which I didn't need in the end for the other one.
|
|
|
|
Post by broyager on May 5, 2024 21:09:56 GMT -5
Swapped to the steeper torque driver angle and acceleration is back to what it was, with the narrow old belt and shallow angle.
Rev's peaking at 9400, no perceived drop off in power at 60km/h, which is the speed limit round here.
Still have no idea what its max speed is..
Also have one of these coming, in a few months, so will be able to tell exactly what it's doing, at least up to 60
|
|
