Search found 78 matches
- Tue Aug 09, 2011 10:58 pm
- Forum: Vespa Tech
- Topic: Height adjustable rear shock
- Replies: 2
- Views: 2014
Re: Height adjustable rear shock
Fournales shocks, u can get them from SIP.
- Tue Jul 26, 2011 8:10 pm
- Forum: Vespa Dyno Graphs
- Topic: VESPA DYNO GRAPH POSTING AREA
- Replies: 28
- Views: 96968
Re: VESPA DYNO GRAPH POSTING AREA
My PX small block - Quattrini M1X, Cockspeed Tuning crank, MMW V3 Tass, 38 Mikuni, no welding - 34.09.
- Sun May 29, 2011 12:11 am
- Forum: Vespa Tech
- Topic: Small frame tuning direction
- Replies: 8
- Views: 4147
Re: Small frame tuning direction
With respect to this forum and if you've not done so already, you're better off looking at the SF site, there is a wealth of info on all the barrels and tuning options. :bald:
- Wed Apr 06, 2011 12:34 am
- Forum: Vespa Tech
- Topic: Malossi reed valve
- Replies: 4
- Views: 1602
Re: Malossi reed valve
Inlet area b4 petals shouldn't be more than 15% of the carb bore, maybe u can dremmel the stuffer a bit if using a bigger carb.
- Sat Mar 05, 2011 1:19 am
- Forum: Vespa Tech
- Topic: malossi 166 gearing
- Replies: 14
- Views: 8027
- Sun Jan 09, 2011 11:07 pm
- Forum: Vespa Tech
- Topic: air fuel ratio on the dyno
- Replies: 76
- Views: 21485
Re: air fuel ratio on the dyno
That's a really good point; 4% Lammy mix would give a 0.60 ratio difference to the lean side.
- Tue Dec 21, 2010 12:52 am
- Forum: Vespa Tech
- Topic: air fuel ratio on the dyno
- Replies: 76
- Views: 21485
Re: air fuel ratio on the dyno
Thanks Al, thats the post that has made this worthwhile for me and relieved a little stress over this. My take has always been that you cannot argue with the science of this in terms of the accuracy, the scavenging nature won't allow it. The Lamda sensor I bought was for a car in the belief AF is AF...
- Sun Dec 19, 2010 8:11 pm
- Forum: Vespa Tech
- Topic: air fuel ratio on the dyno
- Replies: 76
- Views: 21485
Re: air fuel ratio on the dyno
Yes goodwill etc because I'm not wanting to fall out with anybody. The MJP demo version you provided the link for does indeed show a box to tick for a 2 stroke engine. It is however in the bmep section of the paramaters and of course the 2 stroke figure is half the psi of a 4 stroke so this tick box...
- Sun Dec 19, 2010 1:21 pm
- Forum: Vespa Tech
- Topic: air fuel ratio on the dyno
- Replies: 76
- Views: 21485
Re: air fuel ratio on the dyno
I had hoped this would fizzle out but I think that you're probably more naive than arrogant in dismissing Prof Blair so readily! His specialty is 2 strokes, the book is about 2 stroke engine design; he makes reference to four stroke in one sentence about oxygen concentration but conveniently you lea...
- Tue Dec 14, 2010 4:41 am
- Forum: Vespa Tech
- Topic: air fuel ratio on the dyno
- Replies: 76
- Views: 21485
Re: air fuel ratio on the dyno
PM on way to you JIMS.