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Same here! nice thath u test it on the Dr Evo. ill wait for the results (ill bet they are realy good)
Only Good news
So we started the first P4-testruns. (Date und time are wrong.)
Setup:
– DR evo with Polini cilinderhead
– my optimized milled motor-housing
– crankshaft with ptimized timimngs
– 13/13 Dell Orto SHA
– optimized Polini airfilter
– Proma Cirquit (CC)The red graph is from the first run. We have got 5.6 hp at 7392 r/pm and 5.4 Nm torque at 7100 r/pm till 62.4 km/h.
After we had optimized the mainjet und the ignition with the P4, we got 5.9 hp at 7226 r/pm
with a torque of 5.8 Nm at 7035 r/pm, measurded till 63,6 km/h.Under the diagram you have got all important infos.
Furthermore we did a peak performance run were the engine had 5,9 hp at 7147 r/pm and reached a V.max of 83 km/h at 10 800 r/pm.
Unfortunatly we had to stop this run before we got the full performance.
Based on these results some exhausts will be calculated and papermodels will be created.
Of course, we will do some other tests. This is just a info for you. 😉Gruß, Fabian
Great work!
Nice to see some results!
Just keep on working 😉Greetz
indeed, nice to see some goo results, do u have a good picture of the outlet u used?
He used a proma CC, i dont think pictures of that are neccesary…
I’m quit surprised with the outcome of 5.9ps, this is more than any polini cilinder can put out (according to polini). Ofcourse i’m aware that the DR70evo is faster however it is putting out 1.4ps more than the polini 43mm is supposed to do=) I’m curious how much preformance inprovement you are able to make with the custom exhaust!
AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dynoNice, confirming that a DR43MM evo is faster then a 43mm Polini
Iam still curious what you guys aiming for (price/perfomance)
Between 80-120 euro would be a nice sweetspot i think. But exhaust making is very expansive.
Perhaps you can even make an serie for jmpb / german shop.Nice test results, Keep up the good work!
Im very curious how the exhaust pipe will look like
hey guys thats looking good (Y)
do you also have exhaust’s for honda mtx SH ??
hansieb :
Nice, confirming that a DR43MM evo is faster then a 43mm PoliniI don’t see a graph of a polini setup so this doesn’t confirm anything. Keep it empirical.
zoef :
hey guys thats looking good (Y)do you also have exhaust’s for honda mtx SH ??
It is possible to build one for this moped, but here we are talking about Piaggio/Vespa mopeds.
If you believe what Polini writes in the little Tuningbooks which you get if you buy a Speed Engine (or something else) the Polini 43mm has got 4.3 hp.
My unported, original DR evo got on my VCT engine (Setup in my last post) 5.9 hp and reached nearly 10 800 r/pm and 83 km/h.In January we will have the first prototype, because DN-Performance is moving in a bigger place and it gains a lot of time to make tests, calculate and build a nice exhaust.
If you have any other questions just post it. 😉
Many other graphs will follow.Gruß, Fabian
I believe the dr is faster but it isn’t fair to make judgements based on 2 different sources. But this is besides the point so let’s talk exhausts again.
Are those horsepower figures crank or rear wheel horsepower?
AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dynoThose 5.9 hp figures the exactly rear wheel horsepower. 😉
If we made the exhaust we will tune the cilinder and do more tests to check how it’s going on ported cilinders.Gruß, Fabian
Jockoballa :
Those 5.9 hp figures the exactly rear wheel horsepower.Wow, that’s a lot 😮
I wonder if you’ll improve those results with your own exhaust design.
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