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Alright, only because you asked so nicely.
Plenty going on with my small collection of cars, but not a lot with the Motocompo(s). I have aspirations to build a 150cc two stroke version sometime in the future. But for now there’s been a lot of focus on developing the City Turbo for hillclimb contests I’ve been doing for the last 2 years.
> David Cox Wrote:> -------------------------------------------------------> Have had same rev limit type symptoms on my nu50 for years, hope u can> help! Great thread homz!Meanwhile, old fuck nuts here has owned his bike for years and apparently still can’t figure out his tune
Lol. Fuckoff deadshit.Been busy restoring another one, bought a 4th car recently, built an installed custom coilovers in the Honda City, work 5 days/wk, devote time to my young family.What’ve you accomplished recently wank stain?
It'll be a few grand USD i'd say, going by market price in Australia.
To fill the time, some pictures of another one i've just finished restoring. Yellow is my favourite of the three options. Will actually be up for sale in the next week or two.
Next chapter…When I was struggling with rev and temperature issues, I started playing with the stator plate. I filed out the mounting holes a little bit and rotated to retard the timing an extra couple of degrees. I actually had good success with this, but wanted to try some different CDI’s to try and find one with a curve. The two I ordered were the A3202, and the Yamaha Jog box, since they are t
OK, so another update.I’ve continued struggling for revs and power with the Puch head, so after translating the work of some trailblazers in Japan with these bikes, I went back and gave the factory head a shot. Then viola, - back past 10k rpm again with a bit more speed. It then became clear that all I needed was some more compression.However, I was surprised that the custom 46mm cut NU50 head (li
Go back to page 1. I clocked 30.07mph @ 9400rpm.
Mines a Trail Tech Vapor. And yes, picks up on the pulses from the ignition lead. It's definitely revving to close on 10k. I was also running a dual stage Boyesen reed which absolutely makes the top end a whole lot less fluffy. Coupled with the Natty Works expansion pipe, it'll get you closer to 10k.
Hi Cooper,Originally I thought it was running at 10,000rpms, according to my trail tech. However, I think I might have the setup wrong, as I thought i read somewhere that max revs on the motocompo was 5,000, so figured i needed to divide my setting by 2. However, thinking about it now, it's quite possible that 10k is correct, and that factory maximum power on the motocompo is achieved at 5,00
Some experimentation with the big Puch head. Does help to keep temps down a few extra degrees, but the largest difference in heat output was achieved when I filed out the two stator mounting holes, and rotated clockwise a couple of millimeters to retard the timing a little.Unfortunately it's still experiencing some sort of rev limiting affect, as whenever I get super close to 5,000rpms, it fa
PM me with your email details and we can sort something out.
Gigantor puch head slotted to fit Honda bolt pattern and ready to go on.
I didn't think you could adjust the timing with a CDI unit, but i'll wait for someone more knowledgeable to confirm.
Cheers Bas. I was definitely going to change the plug next, but just wanted to see if there were any other bright ideas out there ;-)
Hello guys,Copy&pasting from my build thread: https://www.mopedarmy.com/forums/read.php?1,4132964,page=1I'm having an issue at WOT, as the power just falls on it's face at anything above 80% throttle, and i'm not sure hwta my next step should be. A summary of my setup as follows;* 70cc Polini kit* OEM custom cut head to 46mm. Basically this: https://www.treatland.tv/honda-nu50-4
Yes i've read the dellorto tuning guide so many times I could almost recite it!
Will, to clarify, i will be slotting the holes in the monster Puch head, to fit the Honda stud pattern.
Alright moped friends... I seek your valued input.The 70cc Polini and 21mm Dellorto are up and going, but i'm having some WOT issues. A summary of my setup as follows;70cc Polini kitOEM custom cut head to 46mm. Basically this: https://www.treatland.tv/honda-nu50-46mm-custom-cut-head-p/46mm-cut-head-urban.htmDual stage Boyessen reeds with slightly enlarged reed windowsMalossi intake manifoldMa
Hello guys,Been doing some more mucking around with the new 70cc/Dellorto setup. I originally started with a very rich 98 main jet, and stuck with the 50 idle jet which came fitted to the Dellorto. I was actually having a lot of trouble to get the idle to crack cleanly in the 1-8-1/4 throttle range, so downsized to a 45 idle jet which seems a bit better. I realised after ringing the throttle harde
Thanks Downhill H.I might have mentioned in a previous post that I did not change any carb settings once I put the expansion chamber on, because the Motocompo comes with a pissy 12mm Keihin carb with a pressed in main jet. As I never intended to persist with that carb, I wasn't inclined to run a drill through my original, incase I ever wanted to revert back to standard some day. But I complet
Me too. I've been doing a search to try and understand the logic behind it, but am not having any luck.
Not much to update on.I've received another parcel from Treats so am slowly piecing things together and plan to start pulling the Motocompo apart to put the 70cc drive-train in place.I did however notice a horrible casting transition in the Malossi intake manifold, so it was out with the dremel to tidy it up. During this week i'll also take to the reed cage with a grinding bit, to allow
Yeah, the City Turbo's are pretty damn thin on the ground here too. I wouldn't think there would be any more than a dozen registered ones in the country.
Thanks for the confirmation Dave.I've ordered a big 'ole Puch head from Treats, so will size it up once it arrives.
Yeah, it absolutely makes sense that the size of the openings in the reed block are the limiting factor, and so there shouldn't be any difference in top end performance. I was actually planning to enlarge the reed windows, which I might have an attempt at during this week.
Hey fellas,Not too much to update on since pre-weekend. I did however manage to take the 'compo for an additional run since putting the Boyesen dual stage reeds in. I can confirm that whilst they make the throttle seem a little more crisp in the mid-range, there is in fact no change to top end performance. I took the bike along the same stretch of road that I recorded 48.4km/h on last time, a