|
|
Post by Lucass2T on Sept 18, 2016 11:28:05 GMT -5
anything that takes away burden to the crank is good. No thats not completely true. With a lighter flywheel the crank bearings, bigend- and smallend bearing gets harsher punches on their plate and wear/fail earlier. A flywheels softenes up an engine and reduces wear. As far I know the MHR Rep AC puts out around 12hp the Athena Evo 16-19hp and Polini Evo 70cc something around 20-22hp with the right components. Is that correct? The athena and polini will need a c20/c21 and a helluva good tuning- and probably a porting job to reach those figures. |
|
|
|
Post by tsimi on Sept 18, 2016 11:39:57 GMT -5
Thanks Lucass2TWhat would happen to the stock ignition if the engine revs up to 13400rpm? According to Polini the Evo3 LC cylinder produces 21hp at 13400rpm and according to Yasuni the C21 reaches its full potential at 12000rpm. Crazy rpms if you ask me but if that's what it takes. I just don't think that a stock ignition and the whole stock stator side can keep up with such rpms right? PIGWhat pipes do you own besides the TPR, C16 and Polini 4 race? |
|
|
|
Post by PIG on Sept 18, 2016 12:16:54 GMT -5
Thanks Lucass2TWhat would happen to the stock ignition if the engine revs up to 13400rpm? According to Polini the Evo3 LC cylinder produces 21hp at 13400rpm and according to Yasuni the C21 reaches its full potential at 12000rpm. Crazy rpms if you ask me but if that's what it takes. I just don't think that a stock ignition and the whole stock stator side can keep up with such rpms right? PIGWhat pipes do you own besides the TPR, C16 and Polini 4 race? S6 pro/rep, S6 street and a technigar-r. Also a naruku, I think that's what is called. I was sent the wrong pipe when I ordered it as its not even close to fitting a Mina, maybe it's for a piggy motor? Anyway they told me to keep it and sent me the S6 street exhaust instead |
|
|
|
Post by Lucass2T on Sept 18, 2016 15:21:04 GMT -5
Thanks Lucass2T What would happen to the stock ignition if the engine revs up to 13400rpm? I dunno exactly  havent tried myself yet. But I can imagine the ignition starts skipping beyond certain rpms because the cdi or coil can't keep up with the rest of the engine. Or maybe because the magnetic field generated by the lighting and power coil messing up the pickup signal at high rpms? Maybe the heavy flywheel can come apart at high rpm. That could become very messy. Another thing is the timing curve. You don't want too much advance at and beyond the powerband peak due to engine temps skyrocketing. A lot of maybe's, i know. |
|
|
|
Post by 90GTVert on Sept 18, 2016 19:34:24 GMT -5
iwiketuddlz killed a couple of flywheels trying to use a stock ignition with a Polini Big Evo kit before he got a race iggy. This was a Chinese 1E40QMB. No idea if the genuine Yamaha stuff can take it.
|
|
|
|
Post by ryan_ott on Sept 18, 2016 19:48:16 GMT -5
I think the main thing here is the inner rotor systems are balanced where the oem (chinarelli) may not be so close. I've been running a Yamaha flywheel on my clone and have not noticed any difference but I never took the clone past 10.5k. Mvt does make a standard outer rotor flywheel said to be balanced and good for 15K. So you could likely run that style if it's balanced. OEM scootertuning.ca/en/ignition/10004-ignition-mvt-millenium-with-analogue-cdi.html |
|
|
|
Post by 190mech on Sept 18, 2016 19:49:15 GMT -5
Yeah,I'd think the flywheel is the limitation..centrifugal forces get huge with RPM,s..Finding an MX application is tough as ALL late models are left hand fitment,they can be converted to right hand spinning,but it involves some work..Gotta say the designed "plug-N-play" stuff is the best no brainer take on this!!!
|
|
|
|
Post by tsimi on Oct 31, 2016 19:22:24 GMT -5
I got a plan now regarding what parts I want for this next LC build. It's gonna take me some time to get the necessary $$$$ to start though.
Thanks to you guys most of my questions have been answered but there 2 things left.
1.)
For the life of me I can't find a square shaped radiator to mount up front like Brandon from Scooter Swap Shop did on his Honda. Brandon is not around recently so no answer.
2.)
I want to go with the complete MXS GP2 kit and the description says that the smallest carb to be used should be 30mm and recommended is a 38mm! I know that some cylinders require a certain carb size for necessary cooling is this the same case here or they just recommend those sizes to get a certain hp output?
I mean spaz12 and PIG run a Keihin 28mm on their builds and they do just fine.
|
|
|
|
Post by gsx600racer on Oct 31, 2016 19:33:52 GMT -5
I got a plan now regarding what parts I want for this next LC build. It's gonna take me some time to get the necessary $$$$ to start though. Thanks to you guys most of my questions have been answered but there 2 things left. 1.) For the life of me I can't find a square shaped radiator to mount up front like Brandon from Scooter Swap Shop did on his Honda. Brandon is not around recently so no answer. 2.) I want to go with the complete MXS GP2 kit and the description says that the smallest carb to be used should be 30mm and recommended is a 38mm! I know that some cylinders require a certain carb size for necessary cooling is this the same case here or they just recommend those sizes to get a certain hp output? I mean spaz12 and PIG run a Keihin 28mm on their builds and they do just fine. I shot Brandon @sss a couple questions(via email through his website)a few weeks ago and he responded within a day. You might want to try that. |
|
|
|
Post by spaz12 on Oct 31, 2016 19:41:35 GMT -5
That cylinder is going to be crazy nutz insane on that little Jog of yours, but soooo much fun!
You better get a bigger brake rotor up front though.
|
|
|
|
Post by niz76 on Oct 31, 2016 19:44:05 GMT -5
|
|
|
|
Post by tsimi on Oct 31, 2016 19:48:12 GMT -5
spaz12 Definitely will do. Safety always first. I just wrote Brandon from SSS an e-mail and he replied within 10 seconds! I kid you not I have the mails with time stamp. That was the quickest reply I ever got in my entire e-mail writing carreer.
|
|
|
|
Post by PIG on Oct 31, 2016 19:49:50 GMT -5
Lmao! That thing will be ridiculous! You better find a radiator made of lead. Can you say crazy wheelie machine
|
|
|
|
Post by niz76 on Oct 31, 2016 19:57:50 GMT -5
|
|
|
|
Post by tsimi on Oct 31, 2016 22:54:22 GMT -5
Lmao! That thing will be ridiculous! You better find a radiator made of lead. Can you say crazy wheelie machine Yeah, it should rip pretty good. But before I can get all excited I still need to do alot grinding to fit that thing. I plan to use an Aerox engine as base with front/rear brake discs. I will practice grinding on my 2 other short case engines that I have. The following will need to be worked at: Crank needs 77mm space. The top where the cylinder skirt goes in. I also intend to use the MXS intake which also needs some work on the cases to fit. So alot grinding to do and no confidence yet. But as soon I can get some practice I should be able to handle it. |
|
havent tried myself yet.
