professor
Active Member
The vibration issue was really bugging me. I went so far as to order a different style "Clone" engine, thinking that the vibes were unique to the HF 212. Got a nice go kart motor put away now- both shake the same.
Brainstorm- isolate the engine with rubber isolators (not just rubber pads).
Pic one is a sample (smaller but same style). Came from McMaster Carr.
These babys work, I was able to raise the engine up to fit them in.
But they are a bit squiggly so I added rubber bump pads to the engine topside - to compensate for drive belt loading.
I get some shake at idle like before, but everything goes away on rpm.
I mean REALLY goes away. It's like a new motor.
This bike reminds me of the big block vette I had long ago. The engine dominates the bike.
Still using the governor and I love it, knowing it is rpm limited to around 4 grand (peak power according to a dyno report I saw) @ 35mph.
I changed the exhaust to go backward into the Puch muffler that I opened up the baffle holes (big-time) sounds very quiet with a cycle-like note. The exhaust has 3 slip joints in it with a smear of orange silicone, and doesn't make any weird noises- also allows for engine movement.
The only questionable areas are some belt slippage at full throttle- not real bad, but is there- I can live with it as the bike is accelerating at a fair clip even with a bit of slip.
And the drive chain is 10 speed stuff- seems to be holding up OK.
Full suspension is wonderful- I am not getting pounded going down a road that is a bit rough. Really, this thing rides like a motorcycle.
Gas milage seems real good - motor is loafing most of the time. I typically ride between 15 and 25 mph.
I have a CVT coming and may experiment with it, but this has no trouble getting going as it is. And it is simple.
Brainstorm- isolate the engine with rubber isolators (not just rubber pads).
Pic one is a sample (smaller but same style). Came from McMaster Carr.
These babys work, I was able to raise the engine up to fit them in.
But they are a bit squiggly so I added rubber bump pads to the engine topside - to compensate for drive belt loading.
I get some shake at idle like before, but everything goes away on rpm.
I mean REALLY goes away. It's like a new motor.
This bike reminds me of the big block vette I had long ago. The engine dominates the bike.
Still using the governor and I love it, knowing it is rpm limited to around 4 grand (peak power according to a dyno report I saw) @ 35mph.
I changed the exhaust to go backward into the Puch muffler that I opened up the baffle holes (big-time) sounds very quiet with a cycle-like note. The exhaust has 3 slip joints in it with a smear of orange silicone, and doesn't make any weird noises- also allows for engine movement.
The only questionable areas are some belt slippage at full throttle- not real bad, but is there- I can live with it as the bike is accelerating at a fair clip even with a bit of slip.
And the drive chain is 10 speed stuff- seems to be holding up OK.
Full suspension is wonderful- I am not getting pounded going down a road that is a bit rough. Really, this thing rides like a motorcycle.
Gas milage seems real good - motor is loafing most of the time. I typically ride between 15 and 25 mph.
I have a CVT coming and may experiment with it, but this has no trouble getting going as it is. And it is simple.