Zundapp Max tuned 70cc Athena 11 poorter

[@robban30plus]

This looks good👍 I will follow your progress! Hope you get the results you are aiming for.

[@3bintoito885]

good aspect

[@Chamanegra3]

Nice work, congratulations. What piston is used? You don't have windows, do you?

[@zundappies]

The piston is from athena. And what do you mean with windows?

[@Chamanegra3]

@@zundappies In the video you can't see the windows on the piston. I thought it was another brand. Thanks.

[@zundappies]

Yes it has windows. Athena has stock 2 smal windows in the piston. So do i 👍🏼

[@RuskingArms666]

I have 17,9 hp in my Athena 70cc, and a friend of mine has 20,4 hp in his 🤔 You have to calculate durations and port correctly, not just open every chanal to the maximum. There is such a thing as to much porting in 2-strokes, a tip is to focus the most on the exhaust port ✌️

[@zundappies]

Okay, But it’s calculated. The name of the video is maximum. But ports aren’t. It’s correctly calculated and tuned by a tuner..

[@RuskingArms666]

@@zundappies if so the cylinder should be able to perform more then 14 hp 🤔 (i don't mean to be a jerk, I just find it weird that it doesn't have more power)

[@zundappies]

It’s just an estimate. Never tested on a dyno.

[@RuskingArms666]

@@zundappies oh okay, then I believe it has more, at least hope so 😉

[@robertvisschedijk7805]

wat van uitlaat is dat op de video?

[@zundappies]

Een opmaat gemaakte uitlaat voor de setup. Volgens de berekeningen zal hij 13 000 toeren moeten maken 😊

[@peterolson8350]

Dynosheet or topspeed (GPS)?

[@zundappies]

Nope, I sold the set. With my reasons. Not tested didn’t drive the set.

[@classikracer6677]

Where can i buy this exhaust? is it made by Heiko Tuning or JTMX ?

[@zundappies]

You can't buy it online. Its made by Badvibes. And designed by RvRT. Its hand made. I think you can only order it in the netherlands

[@robvanrossem]

Exhaust is desgined by RvRT, and other info, and made by Badvibes.

[@pr1me113]

How big is the main exhaust port?

[@zundappies]

I honestly don’t know. I didn’t tune it my self

[@pr1me113]

@@zundappies thats some work there, very hard to port zundapp cilinders, theres not much space for improvements.🔥

[@janb.6194]

Zuigerveer onvriendelijk.

[@zundappies]

Née hoor

[@janb.6194]

@@zundappies Echt wel, deze grap hadden wij al uitgehaald op een Yamaha YZ 125 in 1978, had niet echt het gewenste resultaat haha.

[@rogkari5501]

wat is de max rpm en top speed met deze cilinder

[@zundappies]

De bedoeling is om 13 000 toeren te maken volgends de berekening van RvRT 😊 snelheid geen idee, binnen kort de eerste start op mijn kanaal

[@robvanrossem]

@@zundappies Berekening RVRT

[@zundappies]

@@robvanrossem laatst had mijn broer een 284 cilinder opgestuurd en die had u gehoond en een binnenkop ervoor gemaakt. Daar heb ik ook een video over gemaakt. 😁 kunt u zien hoe die loopt😊 Link: kzbin.info/www/bejne/fJO4q5x8fLKenc0 of op mijn kanaal kijken 😊

[@robvanrossem]

@@zundappies Ik heb dat filmpje eerder al toegestuurd gekregen via Whatsapp.

[@zundappies]

Ah oké 👍🏼 loopt goed hè 😊😁