Newbie tuning fragen

Hallo, simson Fans!
Ich bin ganz neu in diesem Forum und ich habe ein paar Fragen ...
Ich besitze ein 2-Kanal 60ccm S51 und ich möchte es in 70ccm oder mehr aktualisieren ...
Der Rest des Motors, Vergaser, Auspuff usw. sind alles original, ich möchte wissen, was genau ich mit Ausnahme von neuen Zylinder, Kolben und Kopf brauchen, um über 60ccm aktualisieren. Ich habe gehört, dass ich Kurbelwelle für den Gang über 70ccm ändern müssen! Ist das nötig? Was sonst (im Detail) müsste ich in den Motor und Zubehör zu ändern?
Eine weitere Frage: Gibt es eine gute Lösung für die Verbesserung der ursprünglichen Scheinwerfer ohne Wechsel von 6v Schaltung? Eine besondere 6v Glühbirne oder ein Trick zur Erreichung einer etwas stärker Licht in der Nacht?
Ich habe über diese rund um das Internet gesucht, aber ich fand nicht, gute Antworten noch nicht!
Jede Hilfe wäre sehr hilfreich!
Vielen Dank und herzliche Grüße aus Griechenland und mein S51!

P.S. Entschuldigen Sie mich für Fehler, mein Deutsch ist sehr schlecht und ich schreibe mit Hilfe von google translate hier ...

Re: Newbie tuning fragen

Zitat von Luftpumpe

Are you good in english? Might be better to understand for you maybe than german.

For 70cm³ you have to bore your case up to 50mm in diameter (original is 46mm) and you need a crankshaft for 70cm³. This has to do with the balancing (70cm³ piston is more heavy than 50 or 60cm³ one)

For tuners it is really easy to make 60cm³ even work better than an original 70cm³ one, so maybe this is the better solution for you? Because if your crankshaft is still in good condition you wouldn't even have to disassemble the whole engine.

Thanks for your fast reply, my english is in fact much better than my german (I can only understand words and phrases, but know no grammar), but I wonder how "legal" is for us discussing in english, in a german forum...
Hope the moderators can be a bit tolerant in order for me to achieve some help....
Anyway, I can see from your answer that I cannot avoid tricky and expensive motor modifications for going 70ccm+, I had already noticed that, but I wanted a more responsible answer, so I joined the forum...
Would a 4 or 6-kanal 60ccm cylinder and piston (I can re-use my same cylinder-head as I use it now for 2-kanal 60ccm, right?) make a noticeable improvement? I also have a 19mm BVF carb, I could use it as well... would I have to change and the exhaust or the original is OK? Do you have any specific integrated 60ccm-solutions to suggest, in low budget project (don't forget the economic recession, *sob*) and without needs for further modifications?
Sorry for my silly questions AND for using english here, but I know nothing about tuning tricks for Simsons and I have no other owners around here to exchange opinions and compare... that's why I decided consulting the experts!!

Re: Newbie tuning fragen

Zitat von Luftpumpe

English is no problem in this forum I think So don't worry.

I think the best solution is to buy a ready made cylinder kit (this includes piston and a modified head). Here in germany we've got several tuning companies that offer such kits. But if you want to avoid problems you should use the carburetor and exhaust that the company prescribes. 10hp are no problem then out of 60cm³

And the carburetors and exhausts are also offered in original look, that's nice to avoid problems with police here in germany and of course if you value on the original look and sound.

Examples of companies are:

langtuning.de
zt-tuning.de
rzt.de
schmiermaxe.de
langandreas.de
2taktfactory.de
racepowertuning.de

Because it might be difficult for you to look through all those websites you should write them some e-mails I think. Besides I don't know which companies also ship to greece and which don't.

Alles anzeigen

Wow, man I shall NEVER regret for joining and asking questions here, this is very fast and serious help from you, I really appreciate!!
So I will start looking right now! I will first try to find something that could take advantage of my 19er BVF and my original 28mm (?) exhaust!!

Re: Newbie tuning fragen

Zitat von Fritt3n

The stock carb is 16mm, the 19mm won't match perfectly with the 60cc "Sport" kits.

You mean the 19mm won't match in matters of feeding the cylinder with fuel mixture, or it just won't be able to be attached on the cylinder? Will I need a special adaptor or something for using the 19mm carb with a 60ccm cylinder? I have never tried it on my 2-kanal 60ccm yet, but up to now I thought it would just match, out-of-the-box...

Re: Newbie tuning fragen

Thank you both, guys for the detailed answers! I already checked zt in english and yes, my 60ccm cylinder kit must be a cheap one (I bought the S51 with it fitted), but its performance does not impress me, hence I am searching for a way to improve it!
So as I understand, my 19mm BVF is practically useless, eh? I will try to fit it ASAP, just to see what happens! But I really don't know about its jetting, I bought it cheap off ebay and it's like new, but not sure about its setup...

Re: Newbie tuning fragen

Zitat von Fritt3n

You better check the jets that used in it first.
It will run if its jetted too poor but there's the danger of seizing...

I guess I won't be experimenting with poor mixture, better relatively low performance than motor seizure!!
Another silly question: As I have to check my piston condition (never put a hand on the motor since I purchased it), do I have to remove the whole motor again, or I can just lift the head and cylinder with the motor standing on the frame?

Re: Newbie tuning fragen

Fine, so I will first check the piston, I lately hear some clicking noises and I suspect damaged rings, in orded (at least) to search for a new piston/rings set, I guess it's 41mm with 2 rings, but I have never seen it so far!
I have noticed that with sudden revving up the motor does an instant "coughing", then comes up again normally, it does NOT do it with the air filter rubber connector detached (n.b. that my air filter is a standard one, completely new and clean), and I have asked a local mechanic about it who said that this might be damaged rings! My compression seems rather good, though...
Once again thank you all for sparing your time and giving me your precious advice!

Re: Newbie tuning fragen

Zitat von Fritt3n

The coughing you described has nothing to with the piston rings but is rather an issue of carb calibration (how many times have I used this word until now? ).
Some ringing and pinging is quite normal and has to do with low quality of the piston - unfortunately there aren't many alternatives especially for foreigners.
Just replacing the piston is a not so good idea because the piston already adapted to the cylinder and the other way round, too.
Again, the cheap pistons aren't dimensionally stable and you have to buy a shit ton of pistons to exactly measure all of them and MAYBE find a matching one.

Wow, so right now you spared me a lot of money and especially time for doing useless experiments. My 16mm original carb is old and a bit worn, the jets and needle had been recently replaced and the whole carb carefully cleaned, afterwards I spent a loooot of time trying to calibrate it, using the original recommended settings and also trying some peeking of my own... I assure you this is the best I can get from it!
I will try fitting the 19mm BVF which is practically new, to play a little and see what happens! In the worst case I will put the 16mm back again!
Since you are so kind and keep answering me, I have found an ALMOT 60/6 channel kit in Poland, which is sold in a really reasonable price! As far as I can understand, it says something about 19mm cylinder inlet! I have already checked links with tuning shops in Germany, I know about the higher quality standards, but my budget is really low, so I was thinking about the ALMOT which will cost me some 60euros with postage! What do you think, is it worth to try? Will my 19mm BVF be of any use with this kit? Will I be able to keep my old cylinder head, or I need another one?
http://moto.allegro.pl/nowy-cylinder-si ... 05531.html

If you start getting dizzy with my questions, please ask me to stop!