I have the red one. Lifts my fatboy with ease. Just be cafeful, it comes down real quick, or at least mine does. I prefer the old twist release vs. the foot pedal.

 

I believe the yellow jack is aluminum and lighter to deal with but has the same capacities as the red or black the OP was inquiring about.

 

i see the reviews of the sears aluminum jack (yellow one) and everyone says it wont work on a dyna. looks like it hits the kickstand with the cross brace between pads of the jack. the other jacks have this cross brace more centered or lower than the yellow model.
so ok, if you have this jack you have to have some kind of block to adapt it. fine, going with that, is this a better buy than one of the others based on stability or weight? is one more stable or safer than another? seems to me adding blocks etc might conflict with safety.
i lean towards the steel units because i can always weld on to it if i feel the urge. plus i want to use the jack as a dolly(very carefully) so i figure to add casters where the fixed wheels are.
anybody out there really using this jack on a dyna?

 

On mine, once you get a feel for it, you can control how quick it comes down with the foot pedal. Just don't stomp on it. Like the NASCAR drivers do with the gas pedal at Darlington, pretend there is an egg between your foot and the pedal and you don't want to break it as you press the pedal down.

You need something under the frame to offset the dyna frame on the right rear end when using these generic bike lifts. HD sells a dyna frame adapter kit for this. Some people have had bad experiences with them coming apart but I bought mine almost 2 years ago and they are still fine.

And with any jack/lift, no matter how stable the bike seems, strap your bike down once you get it lifted up and engage the safety mechanism on the jack. With my red jack and frame adapters, I can lift me bike up, strap it down, and roll it all over my barn if I want to without worrying about it falling off.

 

Yeah, that red sears jack sucks. I borrowed my brother-in-laws to install some lowering blocks, got the bike up, got the bike 'locked' in place (hard to explain unless you own this piece of crap), and then the hydrolic piston blew out all over the garage floor. And guess what? No way to lift the bike to get it unlocked. Now it's stuck about a foot off the ground. So, what do I do? I owe my brother in law a jack (since it broke on my watch), so I go to sears and buy another one ($99), use it to get my bike down, put the bike back up on the new jack, install the lowering blocks, then give the new jack back to my brother in law. That jack sucks. I have it in my garage if anyone in massachusetts wants it. You just have to fix the hydrolic piston/bottle jack thing. THEN I read some reviews and learned that I'm not alone. Did I mention that jack sucks?

 

You and several other people seawarrior. I guess other jacks never break. All I know is it works fine for me and has for the past 2 years and I expect anything with moving parts to break eventually. And there are plenty more others that use it with no issues.

 

Right. And all I know is it broke the first time I used it so my advice to the OP is that the jack sucks.

Read the reviews here: http://bit.ly/qmsTJ

 

Seems like about a 50/50 mix around here of those dissatisfied with the Sears jack and the like to those that make it work regardless.

Sometimes you have to just make things work, but there's nothing like good and quality tools to help make the job go smoother. I think I've only seen one complaint about the J&S jack function, and that was apparently a defective unit that was replaced promptly.

 

J&S jacks rule! Check their site out! No tie down is necessary - but I have a few times just because I am a belt a suspenders man...

 

Same here. A thumbs up to the J S jack, lifts with nothing needed on my Fat Bob and is everything they say it is in the advertisement. Little bit more costly, but in this case you really do get what you pay for.