Subject Started By  Posts  Last Post 
Hobbit not fully variating. Chris Carleton  5 posts — latest 04/26/19 12:06AM
QT50 upgrade Timothy Lehrer  2 posts — latest 04/25/19 08:17PM
A35 top end speed? Dom Smith  9 posts — latest 04/25/19 07:49PM
A35 torque improvement, WTF is going on ? Nicolas Smolders  26 posts — latest 04/25/19 09:29AM
A35 Polini + 19mm PHBG Race Questions B DM  40 posts — latest 04/25/19 03:20AM
PP derbi thread... What kinda stuff you guys doing? «tyler »  27 posts — latest 04/24/19 12:02AM
How big is too big?!?! Ben Johnson  14 posts — latest 04/23/19 04:42PM
how to "sipe" brake shoes steven kline  27 posts — latest 04/21/19 12:06PM
moped tuner...it works slick. kevin Smellaflange  16 posts — latest 04/20/19 09:54PM
Morini Ed. Where you at?? Beau Tobin  13 posts — latest 04/19/19 11:55AM
Single ring vs double ring pistons Ľ̷̝̽͒i̶̛̼͑͠ȁ̸̧̛̽m̵̻̟̯̀̅ ̷͎̙̽̊F̶̲̺͑̓ F  26 posts — latest 04/19/19 01:18AM
Puch Polini + Mikuni VM20 Jetting cj cj  11 posts — latest 04/18/19 11:43PM
New Shocks? 81' 5 Star General Bull Dog  5 posts — latest 04/18/19 09:16PM
El-cheapo Peugeot CDI vs. 5 coil Will S  7 posts — latest 04/17/19 10:09AM
Exhaust Chamber Calculator Jake P  25 posts — latest 04/16/19 10:39AM
Carb upgrade for stock-ish qt50 as first mod. Rob LaFreniere  17 posts — latest 04/15/19 07:26PM
mocking up tomos top end with puch piston. Justin Broth  4 posts — latest 04/15/19 05:09PM
Optimizing Your Ride Michael Forrest  8 posts — latest 04/15/19 12:26PM
Anybody ever run a frenchy engine in an hs50? Aaron Blair  13 posts — latest 04/13/19 08:51PM
Hobbit vm20 tuning help.. taylor Vogel  13 posts — latest 04/13/19 05:56PM
Derbi pp to cyl reed JBOT Admin  37 posts — latest 04/12/19 08:50PM
Best set up for A35 Alex Moore  20 posts — latest 04/12/19 09:41AM
Decking Batavus head Alex Rice  29 posts — latest 04/11/19 11:57PM
Something to Slap Together Seth B  51 posts — latest 04/11/19 11:49PM
Fuel injection Douglas Binder  24 posts — latest 04/11/19 10:12PM
Bought a puch.. Alex Hedrick  59 posts — latest 04/10/19 06:39PM
Suitable exhaust upgrade Garelli Katia? Luke W  6 posts — latest 04/08/19 02:33PM
Av10 rotary valve Ľ̷̝̽͒i̶̛̼͑͠ȁ̸̧̛̽m̵̻̟̯̀̅ ̷͎̙̽̊F̶̲̺͑̓ F  6 posts — latest 04/08/19 09:38AM
Go go peugeot Evan Wells  9 posts — latest 04/05/19 06:22PM
General 5 Star Carb Tunning Luis Paez  3 posts — latest 04/05/19 03:17PM
Hercules P1 (Sachs 504) Performance help Tanner Moersch  5 posts — latest 04/05/19 11:59AM
Deristricting Vespa variator Les B.  46 posts — latest 04/02/19 07:13PM
Stock crank on 70cc kit will it last? Rica Rivera  6 posts — latest 04/02/19 06:01PM
vespa malossi cdi/flywheel Declan g  2 posts — latest 04/02/19 02:28PM
TSE R Exhaust Hadi H  9 posts — latest 04/01/19 04:20PM
Performance Vespa grande? Alexandro Ramirez-Nagy  9 posts — latest 04/01/19 12:51PM
50cc v1 kit compatible with stock pipe? Angry Hipster  7 posts — latest 04/01/19 11:44AM
What is this middle intake port on a DOS av10 70cc kit Ľ̷̝̽͒i̶̛̼͑͠ȁ̸̧̛̽m̵̻̟̯̀̅ ̷͎̙̽̊F̶̲̺͑̓ F  3 posts — latest 03/31/19 12:24PM
Tomos Streetmate Exhaust Everett Goen  5 posts — latest 03/31/19 04:51AM
How to: rebuilding za50 stock clutches with aftermarket Tomos springs Jonathan Feldman  21 posts — latest 03/29/19 11:11PM
Puch maxi carb problems Rasmus Langberg  9 posts — latest 03/28/19 06:45PM
80cc polini/mikuni vm20 tuning Jack Bartow  8 posts — latest 03/28/19 12:20PM
Boost or boosts? Chop that garbage out test JBOT Admin  62 posts — latest 03/28/19 02:21AM
pipe re-use. ♣Slew Foot♣  7 posts — latest 03/27/19 05:52PM
Minarelli Polini 80cc Kit Questions Sean Daugherty  63 posts — latest 03/27/19 09:19AM
Hard Seized my A35 D L  8 posts — latest 03/26/19 02:02PM
Ring & Exhaust Side Lubrication Ungapped rings to bind them all  6 posts — latest 03/26/19 12:07PM
Oversize Metrakit 65 piston sets...? Bob Selby  10 posts — latest 03/25/19 12:15PM
Racing fuel in a moped, BS I think Turbo 124  36 posts — latest 03/25/19 05:00AM
MJ50 exhaust fitting Stevie McLellan  3 posts — latest 03/24/19 06:00PM