Any thought given to a steel frame like Reynolds 520 or 631 for more damping?
769104
I would think steel would make the bicycle heavier which for me, at least, would not be an improvement.
409207
The first step is to run the fan before mounting it. It should have no perceptible vibration. If it does, the propeller is out of balance -- return it for a new one.Once it passes that test, use rubber grommets (vibration isolation bushings) at the three points where the fan frame attaches to the steel venturi. You'll need longer bolts to do this. No steel hardware should touch the fan frame -- properly mounted in this way, the rubber bushings will absorb vibration. I have two of these and there is no vibration noise -- just the whooshing of air.
1006336
I have had no problem with an older mountain bike that is also very heavy. This bike was a steel frame bike
934576
I do not know, I felt a significant amount of resistance also but assumed this is the design. Considering the rated capacity of the aerodynamic load bars attached by only a "clamping" mechanism - I would expect the resisitance for surety purpose.
1878185
We only have the 973 so I can't compare. The 973 is used frequently. It's still going strong and is reasonably quiet. We've had to replace the wood floor attachment, and the plastic on the metal tubes broke and we needed to replace a tube, but it gets a lot of use.
313555
I just have (1) and it does vibrate a little. I suspect all the 9220-20 fans will vibrate a little I almost returned mine but it does move air well. It seems the frame support is a little light for motor size!!
963787
The 55-210 should fit your needs. It takes time to get accustomed to the added weight but the added flexibility is terrific.
2120203
I've been pleased with the velocity control on mine. Each person is different, though. What I like might not be your cup-of-tea.
385359
make sure the shaft is inserted into the bottom bushing, when mine arrived it was dislodged somehow. Also, you will have to string some stiff wire on the bottom to keep your frames from falling through. I slung out about 100lbs of honey with no problems after I corrected these issues. Good luck
1971562
I have found steel is much better. Stays in place much better from the vibration of the recoil
1687579
You should contact the manufacturer as a motor home needs to have something that will take the vibration
2120513
Yes,I think so. It weighs 13 pounds vs 25 pounds for my old steel unit. Have great day!! Don L.
1464475
I would think you would benefit. We pulled a 17' Casita (travel trailer) and pulled threw some high winds and I believe it was because we had the extra security of the anti-sway bar. If safety is what your looking for, I would suggest it.
2219457
We have it with one and on a frame. Maybe it wouldn't be as noisy if it didn't have one!
1611980
This thing is small. I wouldn't put any more stress on it than what would take to remove a small damper. The rods that go in the crank are barely larger than a pencil.
2209031
Yes it's better to use the 78 to 108, it will keep it stronger and more stable....good luck
1682979
I will give the installation a "5" rating. I live in Fort Worth which experiences wind gusts of more than 50 mph. I use some heavy concrete blocks to stabilize the system I did not want tn put a permanent anchoring system as it would probably bend the metal structure. My grand kids use mu set to learn to play not only golf but also baseball. The older ones practice their tennis serve.