Gilera Runner 500cc.
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Member
GTS
Joined: 19 Aug 2020
Posts: 14
Location: Berlin Germany
Sun Jan 10, 2021 2:28 am quote
Hi Arnoh!

Congrats on the 35BHP! Very good value indeed. From my dyno runs these engines have between 28 and 34 BHP - I ran 6 different 459ccm 29kw engines my dyno. Are you gonna to tune your engine? Which vario setup was in your engine?

Differences between rear wheel and crankshaft output was around 7-9 hp on my dyno with blocked vario transmission (so losses on wheel/dyno, secondary transmission and vario).

BR, Juxus
Hooked
Gilera Runner 500cc.
Joined: 11 Mar 2014
Posts: 153
Location: Netherlands
Sun Jan 10, 2021 3:35 am quote
I run the original vario.
This contains 8 x Dr Pulley sliders 18Gr (2517-18G)

A Dr Pulley hit clutch, with 2 spacer rings under the original compression spring.

Ceramic coated downpipe from a Mp3 500.

Mivv exhaust.

The new HPE cilinder and piston from the newest type Mp3 500.
Compression ratio was 10,5 : 1.
Compression now is 11,0 : 1.

The rest is original.

The thin rear tyre is now 140/60-14.
The original high tyre was 150/70-14.
Member
GTS
Joined: 19 Aug 2020
Posts: 14
Location: Berlin Germany
Mon Jan 11, 2021 12:59 am quote
I see you put a lot of thought in your setup. What is your tuning target? The dyno diagram shows the acceleration rpm around 6500.

Did you see differences between the old and HPE cylinder?

For the HIT clutch there are different opinions to find. The theory sounds convincing to me, but I have not found proof (like 0-100kph comparisions) that it delivers higher acceleration. What is your experience with it?

Thanks for sharing all your project and insights!
Hooked
Gilera Runner 500cc.
Joined: 11 Mar 2014
Posts: 153
Location: Netherlands
Mon Jan 11, 2021 7:00 am quote
With the hpe i can feel it has more torque.
I have driven the donor Beverly with the standard, and later with the Hpe cilinder.

The clutch works verry good, when the clutch bites, it bites and does not slip.
With the original clutch, tested in the beverly, it could slip through.
This is mostly from a stop to full throttle launch.

This is the setup, all the power is where i want and need it.
Setup is perfect.
Hooked
Sportcity 350ie
Joined: 08 Nov 2016
Posts: 132
Location: Zagreb/Croatia/EU
Mon Jan 11, 2021 1:41 pm quote
You did serious project and built it almost from scratch. Glad to see that you had idea, good will, tools and needed knowledge to do all this. I know exactly how you feel when have produced your own dream-scooter since I build and drive something similar (Sportcity 350ie).
Enjoy;-)
Hooked
Sportcity 350ie
Joined: 08 Nov 2016
Posts: 132
Location: Zagreb/Croatia/EU
Tue Jan 12, 2021 9:01 am quote
Reposted your project here on croatian local scooter forum and one older member told that one guy had similar but less "polished" project here. We fould old resales offer from 2nd owner after "project". Here you could see photos:
https://www.njuskalo.hr/skuteri-preko-50/gilera-runner-vx-500-cm3-oglas-8886416
Hooked
Gilera Runner 500cc.
Joined: 11 Mar 2014
Posts: 153
Location: Netherlands
Tue Jan 12, 2021 9:10 am quote
Hello, yes i have seen that bike.
The donor for that was a 460cc Piaggio X9.
That was a more 'easy' build.
With big wheels, and a engine that is outside the frame.

I have seen more of these easy builds, that could have been mutch better if they took more time to do the build.

But most people don't care, they just want it to be fast.
Hooked
Sportcity 350ie
Joined: 08 Nov 2016
Posts: 132
Location: Zagreb/Croatia/EU
Tue Jan 12, 2021 2:59 pm quote
You're totaly right- difference between your and this build is really big. We could see that you started with this project after longer research with almost unlimited tools availability, knowledge and experience. I'll say that budget wasn't bottleneck too;-)
I had issue with steering angle since my scooter wasn't projected for such speed- so had to increase steering angle from 25.5 to 26.5. I hope you'll not meet this issue but take care during first top speed testing.
Also glad to hear that in your country you didn't had more problems during "homologation". In my country they expecting so detail project with all posible calculations that's almost imposible to pass;-)
Stay well and fast and receive my congratulation one more time!
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