buzbikebklyn1
New Member
- Local time
- 3:16 AM
- Joined
- May 24, 2009
- Messages
- 284
I've found a machinist that has a CnC machine that's willing to make a limited run of billet barrels and modified cylinder heads for the 66/80cc motors If i help him build his own bike! (his business is a little slow of late)
Slightly higher compression with a polished hemi combustion chamber correct squish area.
Stronger materials, and increased cooling area for the head, the barrels have thicker walls and are iron sleeved, (to make future bore clean up easy)
Modified port configuration and a reed block housing, im using large cut off saw reed-blocks, a straight shot intake manifold and a diaphragm carb off a small ultra light air craft engine. Increased cooling fin area. All designed for the 8mm head studs.
As with everything i build i'm initially only having two sets made if they work well ill consider more.
The prototypes have already been designed and a machining program created.
I've had several pieces made by this shop in the past and I've always been impressed by there workmanship so quality is first rate.
My question is can a well put together (good bearings, proper clearances, good gaskets and vacuum tested) stock 66/80cc 2 stroke bottom end handle the power increase?
Can the bottom end take it?
Am I going to have to endurance bench test the combination? it seems a shame to sacrifice a good bottom end for all this, but i need a stronger engine out of the same sized package...
Any one tried this before?
Oh... on another front-
All that breww haa haa over the "50mph electric bike" has inspired me to build one myself...pics to come...aah the sounds of silence!
Slightly higher compression with a polished hemi combustion chamber correct squish area.
Stronger materials, and increased cooling area for the head, the barrels have thicker walls and are iron sleeved, (to make future bore clean up easy)
Modified port configuration and a reed block housing, im using large cut off saw reed-blocks, a straight shot intake manifold and a diaphragm carb off a small ultra light air craft engine. Increased cooling fin area. All designed for the 8mm head studs.
As with everything i build i'm initially only having two sets made if they work well ill consider more.
The prototypes have already been designed and a machining program created.
I've had several pieces made by this shop in the past and I've always been impressed by there workmanship so quality is first rate.
My question is can a well put together (good bearings, proper clearances, good gaskets and vacuum tested) stock 66/80cc 2 stroke bottom end handle the power increase?
Can the bottom end take it?
Am I going to have to endurance bench test the combination? it seems a shame to sacrifice a good bottom end for all this, but i need a stronger engine out of the same sized package...
Any one tried this before?
Oh... on another front-
All that breww haa haa over the "50mph electric bike" has inspired me to build one myself...pics to come...aah the sounds of silence!