Video

Hey, I don't have that one sorry.

@@pitobread okei, thanks!

I did, it was for a friend and timelines changed and I was unable to record the build completion

You are welcome!

I havent but I could!

@@pitobread I was thinking about making one.

@@Corn-ped Hell yeah dude, I think I posted the info on moped army about the bearing you need. you just need to bore it out 1mm I think... it's been a hot minute. I do have one made here on my bench already. I can do it if you cant but if you wanna take it on absolutely! CZcams for me is just about sharing info on obscure stuff! If you get in the weeds hit me up I'll dig for my info.

@@pitobread yeah I am going to get one for my derbi and was looking for info and couldnt find any. I plan on ordering the parts and making a video within a month or so.

your way too much advance for an air cooled engine would be my guess. I would pull some initial timing back so it's around 35 or less and try that. Also dunno how your measuring TDC but the angled spark plug on a dio means it is not able to use a standard micrometer as its not going to be correct.

@@pitobread thank you for your answer. I am using a piaggio Cylinder with spacer, therefore I have a straight spark plug. You mean 35 degrees or less at its peak advance right? I am asking cause MVT curves set at 0.35 starts at about 35 degrees and it peaks at around 43 at around 6k rpm. Also, let's say you set ignition to have 35 max advance it means dropping all the curve by 8 degrees. In this case you will have approximately 10 degrees of advance at 12k rpm. Shouldn't you have around 17 degrees of advance at highest rpm? Thanks a lot for your opinion/explanation.

@@nickfarri you want 17 degrees at peak power, not RPM, so somewhere at 6-8k probably depending on cylinder. 35 max I would start with as to not melt anything else. You can work up from there.

@@pitobread thank you for clarifyng timing at peak power vs RPM. Actually i have a doubt that what has happened might have been caused from a air leak in the head o ring but I believe, as you have guessed, it was a consequence of the high temperature melting the rubber. AC is not LC... I will set timing mark at TDC with a advance reduction of approx 9.4 degrees which will bring max advance to around 34 and 17 at approx 8.5 k rpm. The new test will be done with a stage 6 mk2 AC for piaggio and exhaust mhr for race only originally born for minarelli vertical and adapted to Honda Dio. It's probably not the best for high revs but that's all I have for now ( looking forward to test a roost pv 70 code rst 470). Thanks again for your help. p.s. 2 I recently found out an other interesting ignition for honda dio ( and many other brands). HPI ignitions, check it out, there are 2 version, racing and with light, both with interesting curves and with the option of a programmable CDI

Im not sure where you can get parts.

Yes the trigger was just a wire wrap on the spark plug wire and one ground.

if you were splitting hairs yes you could!

Hello

Not that i am aware of, they are open cartridge.

I made it.

Not sure they are available anymore to buy!

Hard to say, it would depend on elevation and a lot of factors really! just upjet till it runs bad then start working back!

it was about 12"

It was about 300 pounds

Link is in the description, its not minarelli its piaggio. You don't shorten the gear backlash on the OD you do it on the diametral pitch of the gear, which without a gear hob or a wire edm is nearly impossible. One other thing I found is if you use a lockout delete spacer I have ran into side load binding issues. If you delete the gasket you wont have enough clearance for the gear to turn. Had to make some custom shims to get everything nice. And the reason I use the piaggio is it has an outboard mount for an extra bearing, I don't think the little tiny bearings will last long with all that weight hanging off them.

I will be doing a bunch of imported scooters here soon so I could probably do something like that

@@pitobread I was sorta shocked when I started researching more into these bike and finally got one that there was really no info on how to maintenance them even though they are like 20+ years old, Def will stay tuned on when those come! Thanks!

Kitaco, Im pretty sure I got it on webike

Glad to hear it

I dont know the specific answers to the pipes you mentioned but displacement and port timings play a big part in the pipe design. So if you still running the 85cc pipe a pipe designed for the 105 will most likely make more power.

@@pitobread im no experter on 2stroke exhaust pipe. But if its more cc more exhaust is comming out. Even IF the yz85 cc is exactly The same sizes on ports.i dont know how to calculat. But mayby The pipe where The silencer is comming have to be bigger?

Its been a while since I made the video and also a hot minute since I have made a custom pipe, but from memory without watching the whole thing and firing up the spreadsheet the calculator lets you pick a RPM point for HP, so If you want peak power at x rpm you would put the values you want there. I think that the dual angle reflector is where you start getting into widening power. Also pipe building is somewhat still witchcraft even with a calculator so you sometimes make a follow up pipe after with a few trial and error changes.

i think they are rd125 wheels but i am not 100%. they came on it

it was about 12x12

I think it was .040 mild steel. i have a video with a calculator in my videos

Thanks.

@@pitobreadyou’re welcome

The reed spacer? I made it.

Thanks!

czcams.com/video/ytazRGyuJys/video.html

about 12"

Not sure, I dont live in India so don't know what is available there. Start looking in scrapyards.

It was made out of scrap.

Some may work, I am not sure

No probably not

can't say never heard of them.

scootertuning.ca can order you one im sure

I can look i may have a backup

@@pitobread ty, I have found it. I can also give it to you now, if you need it or something.😀

hi, mario, are you build chasis? and Did you find the calculation?

@@next_step9393 I have found the software, but I do not know how to post my drive link to it because YT does not like links anymore.

It is what is known as an intertia dyno.

@@pitobread Thank you! I didn't know they were a thing. (I believe you may find a clone somewhere over here... I'll look for the parts) Thank you!

Big same!!! I have dyno jet with wide band…. Don’t need a dyno just wanna tune and not have to worry about traffic

i worked on this when i was away from home during 2020 and 2021 so i do have an update. just need to find time.