happycheapskate
Active Member
What is a "transfer"?
I understand what a cylinder is, and some about 2st. engines. What is a cylinder transfer?
I understand what a cylinder is, and some about 2st. engines. What is a cylinder transfer?
happycheapskate
Active Member
From what I've seen of bicycle motors, they are all junk save for a few one-offs or actual moped and track bike engines people have carved out their pedal bikes to install.
Maybe it will be like cell phones: 20 years ago, they weighed a ton, were thousand dollars, considered silly or pretentious, and irritating to use. But USEFUL! So eventually now they are cheaper and majorly mass produced, with lots of design competition and fan/brand marketing, trickle down technology, and better reliability (for the most part).
maybe in 20 years , motor bicycles will be awesome. For now they are pretty much either just useful, or pretty but painstaking.
good luck!
Maybe it will be like cell phones: 20 years ago, they weighed a ton, were thousand dollars, considered silly or pretentious, and irritating to use. But USEFUL! So eventually now they are cheaper and majorly mass produced, with lots of design competition and fan/brand marketing, trickle down technology, and better reliability (for the most part).
maybe in 20 years , motor bicycles will be awesome. For now they are pretty much either just useful, or pretty but painstaking.
good luck!
happycheapskate
Active Member
re: no head gasket
Did you use some type of gasket maker on the engine? Did you mill the surfaces any?
Did you use some type of gasket maker on the engine? Did you mill the surfaces any?
happycheapskate
Active Member
I have a Grubee Skyhawk 48cc I am still putting together (muffler doesn't fit. Have to bend it or something, not while attached to motor! I know)
The instructions, kind of lame as they are, say to use the clutch lever lockout when adjusting the clutch. I think that star nut is for fingers. It came with some kind of puller tool, probably for the 10 or 11 tooth cog. It didnt' come with any star nut tool.
The instructions, kind of lame as they are, say to use the clutch lever lockout when adjusting the clutch. I think that star nut is for fingers. It came with some kind of puller tool, probably for the 10 or 11 tooth cog. It didnt' come with any star nut tool.
2
210061741
Guest
HappyCheapskate
I use aluminum gaskets cut from very thin disposable cookie sheets.
And yes i mill all the gasket surfaces on the engine with the sandpaper and glass.
If the muffeler dosen't fit check how much the motor is tipped to the right.
Is it getting blocked by the bicycle downtube?.
The cylinder is the part with all the fins.
The piston is inside the middle of it. "cylinder bore"
The Transfers " Transfer Ports " is the passage where the fuel air gets sucked into the crankcase.
We want good flow through there.
The transfers are located on each side of the cylinder.
The front of the cylinder has the exhaust port.
Where you connect the exhaust.
The rear of the cylinder has the intake port.
Where you connect the carb.
The HT is piston timed which means there are no valves.
Only 2 Transfer Ports the Intake Port and the Exhaust Port.
I know i have pictures of this stuff around here.
I use aluminum gaskets cut from very thin disposable cookie sheets.
And yes i mill all the gasket surfaces on the engine with the sandpaper and glass.
If the muffeler dosen't fit check how much the motor is tipped to the right.
Is it getting blocked by the bicycle downtube?.
The cylinder is the part with all the fins.
The piston is inside the middle of it. "cylinder bore"
The Transfers " Transfer Ports " is the passage where the fuel air gets sucked into the crankcase.
We want good flow through there.
The transfers are located on each side of the cylinder.
The front of the cylinder has the exhaust port.
Where you connect the exhaust.
The rear of the cylinder has the intake port.
Where you connect the carb.
The HT is piston timed which means there are no valves.
Only 2 Transfer Ports the Intake Port and the Exhaust Port.
I know i have pictures of this stuff around here.
happycheapskate
Active Member
Thanks for the info
Ok. I understand. So it doesn't have a reed valve? Very interesting. I understand the transfer port then, I just didn't have a word for it.
I like 2 stroke motorcycles for some reason. Maybe because I like the sound and because they are always changing their own oil if you do the mixing right.
Can anybody link me to a thread on various oil for 2cy bike engines?
I want to read reviews of the different oils, like Echo 50:1 premo oil (can use more if you want), Walmart Ashless 2cyc ski-doo/atv oil, Power Blend Home Depot, etc.
Ok. I understand. So it doesn't have a reed valve? Very interesting. I understand the transfer port then, I just didn't have a word for it.
I like 2 stroke motorcycles for some reason. Maybe because I like the sound and because they are always changing their own oil if you do the mixing right.
Can anybody link me to a thread on various oil for 2cy bike engines?
I want to read reviews of the different oils, like Echo 50:1 premo oil (can use more if you want), Walmart Ashless 2cyc ski-doo/atv oil, Power Blend Home Depot, etc.
2
210061741
Guest
I have used MC-1 Synthetic Racing oil and Lucas Synthetic.
I like the Lucas.
I think any synthetic oil is good.
You use less and it leaves less garbage in your cylinder.
If i use normal oil i have to run the carb richer.
With the synthetic i can lean it out a bit.
I like the Lucas.
I think any synthetic oil is good.
You use less and it leaves less garbage in your cylinder.
If i use normal oil i have to run the carb richer.
With the synthetic i can lean it out a bit.
