7.44 or 8.44?graphite9 wrote:7.44's. So far I'm at 15hp. 155MJ 55pilot. Need to run it a bit more, and design a 1:1 gear drive system.
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- Thu Apr 24, 2014 5:08 pm
- Forum: Performance Technical
- Topic: Picking up a scooter dyno for the shop!
- Replies: 40
- Views: 12248
Re: Picking up a scooter dyno for the shop!
- Wed Apr 23, 2014 1:33 pm
- Forum: Performance Technical
- Topic: Picking up a scooter dyno for the shop!
- Replies: 40
- Views: 12248
Re: Picking up a scooter dyno for the shop!
What gears are you using?
- Sun Mar 30, 2014 1:01 am
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Fab Flash 7: Fabrizi 50mm Cylinder Kit
Did you check compression? If to high for pump gas it will make your motor run hot.
- Wed Mar 26, 2014 11:09 pm
- Forum: Non-Honda Technical Help
- Topic: Daelim Cordi front rim replacement?
- Replies: 9
- Views: 6985
Re: Daelim Cordi front rim replacement?
try a sym dd50 front rim or dio zx rim
- Mon Mar 24, 2014 2:08 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Fab Flash 7: Fabrizi 50mm Cylinder Kit
If your turning 10.5k rpms ,go with the 7.9 gears. Higher rpms like 11.5+ you can use the 8.44
- Sun Mar 02, 2014 9:29 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: Little Victories
Did you do a port map of the ports before install? Does anyone have port maps of the new kits?
- Sun Mar 02, 2014 9:24 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: Little Victories
Squeezing the center spring to check if still ok is not a accurate way. The spring can be dead in mid belt transfer under heat. Put a new center spring to confirm that the old spring is really dead or not. Malossi springs are notorious of dying like that. Even if using a torsion controller or roller...
- Tue Feb 18, 2014 3:40 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: CONTACT!
Looks good!. Yeah the pg pipes are good from 72-90cc with the rear insert intact. They were really designed to run on small stroker setups as pg doesnt have small cc cylinders
- Mon Feb 17, 2014 7:00 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: CONTACT!
Also measure the exhaust port opening flange side and see what diameter it is. By the looks it looks to be about 26-27mm
- Mon Feb 17, 2014 4:15 pm
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: CONTACT!
The pg short and scorp should work fine. They are for 72-90cc setups. The pg has a wider powerband tuning wise than the scorp but the scorp will rev way higher(up to 12.5k) than the pg but you sacrifice the wide powerband. Both should work fine
- Mon Feb 17, 2014 5:01 am
- Forum: Builder's workshop
- Topic: Fab Flash 7: Fabrizi 50mm Cylinder Kit (74.6MPH)
- Replies: 212
- Views: 92954
Re: Flash 7 Cylinder Kit: CONTACT!
Does the combustion chamber protrude down from the head? The old ones use to sit inside the cylinder about 1mm. If it does you need to add base gaskets or use a thicker one. Then check squish clearance.
- Wed May 29, 2013 6:13 pm
- Forum: Performance Technical
- Topic: issues with fresh MHR dio build
- Replies: 16
- Views: 7958
Re: issues with fresh MHR dio build
140? are you using a cht gauge to check temps? because thats cooler than what the bike idles at after the engine gets up to temp. Using a laser temp gun. thats a very inaccurate way to check engine temp. the best is to use a cht gauge or egt. as soon as you ley iff the throttle,head temps will usua...
- Wed May 29, 2013 5:35 pm
- Forum: Performance Technical
- Topic: issues with fresh MHR dio build
- Replies: 16
- Views: 7958
Re: issues with fresh MHR dio build
140? are you using a cht gauge to check temps? because thats cooler than what the bike idles at after the engine gets up to temp.
- Mon May 27, 2013 8:13 pm
- Forum: Performance Technical
- Topic: Anybody ever ported a Polini Contesta?
- Replies: 12
- Views: 6037
Re: Anybody ever ported a Polini Contesta?
copy your brothers bore. take the measurements from his bore
- Wed May 22, 2013 5:09 pm
- Forum: General Discussion
- Topic: shipping costs from japan?
- Replies: 10
- Views: 4386
Re: shipping costs from japan?
not really sure if its that high. best way is to have the seller take the box with the engine in the box to their post office and get a quote. ems is the cheapest way to ship from asia to the US.