how2 FLOW a VESPA CRANKshaft | extend intake -crank timings | FMP-Solid PASSion |

flowing a crank is quite easy, its no rocket science, its just about if u dare to do it ;)
there are only 4-5 cuts needed with a flex grinder to your flowed vespa crankshaft. the fine finish is mostly for the eye ;o) u DONT polish anything on the intake side, the golf ball isnt polished eiter.
just take care to protect
1) the stumps
2) the conrod bearing
3) the edges of the rotary valve cheek (clutch side) that close the rotary valve of the case (the cut on the right at 6:02 doesnt matter, THIS edge doesnt close the rv).
YES of course u lower the balancing rate if u process the crank like that BUT as centering/pressfit/stumps are good it doesnt really matter, it will still run quite smooth.
the other way round: the best balanced crank will vibrate as hell if the centering is not ok and/or the stumpes are ankled (thats the usual defect of all vespa cranks after some years) ((sadly some brandNEW cranks also do have ankled stumps and low pressfit.. but are sold for a lot of money anyways...)) and some time travel over the last years, flowed my first crank in 2004
#vespa #crankshaft #flowing --------------------------------------------------------------------------
FOLLOW me on
insta: @FreakMoPed
fb: / freakmoped
--------------------------------------------------------------------

[@ariefrahmanwijaya8136]

Which one better ? Destroy Intake flow or change duration cranksaft? Thank you
For use redvalve

[@FreakMoPed8]

for finetuning usually both is needed ;) but start with intake first!

[@ariefrahmanwijaya8136]

@@FreakMoPed8 thanks fmp :D

[@tuonglambretta]

Have you got the clip test this crankshaft on the road?

[@FreakMoPed8]

Whats a clip test? I modify cranks like this for about 15y

[@FreakMoPed8]

Orange one for instance
ruclips.net/video/-kxmC875lxQ/видео.html

[@tuonglambretta]

@@FreakMoPed8 yes thank you. So strong...💪💪💪

[@vladanpesic5804]

Does the cut crankshaft have balance and does the machine have vibrations? Thank you

[@FreakMoPed8]

it changes of course, but when basic parameters are fine (stump straightness, presfitt, centering) its still gonna be fine

[@VictorRodriguez-py5hu]

you can do the same with vespino

[@Pez3477]

Super Video

[@roxylp3513]

hello, I am preparing an LML engine with menbrane, I would like to know which crankshaft you consille me, a full cheek or a villebrequin bell, thank you

[@FreakMoPed8]

Every rotary crank will do
But Which setup is planned?

[@fransboers5485]

hoe zit het met de balans factor..???

[@FreakMoPed8]

? english pls.

[@jannes2066]

How is the balance of the crankshaft? Does it has any impact?

[@rusdisinaga5159]

nice work

[@muhammadyusuf9525]

For rotary or reed vavle

[@FreakMoPed8]

thats a rotary crank

[@muhammadyusuf9525]

Tq info

[@amiera7762]

Buleh pergi jauh ke

[@enigmasvids9615]

Some dialogue would be useful!

[@FreakMoPed8]

U cant have everything mate, sorry 😄😉