Does this one seem to fit correctly ?
 

I spent good amount of time adjusting ETC..changing out seat post, moving handle bars, seat
height, and think I have it right..:) ........Would not you want a MTB a little smaller than a Hybrid ?
Richard :thumb:

Nothing leaps out at me as an obvious problem. Are you comfortable on it? Personally, I'd run the bars lower, but that's only because I like a somewhat more aggressive position when I ride.

Give your daughter an A for her video work. She did a good job recording your ride.

You rode back down the wrong side of the road. :lol:

Your daughter does have a steady hand, great job on her part.

Very comfortable, almost like sitting on the coach..( LOL ) spent a lot of time working on it..( Best part is the camera crew ), she loves biking, and is so adorable....Thanks, Richard

It is a very low traffic road, I really did put a lot of effort into setting up the bike. but the camera crew, would have road 10
miles for that same shot...She wants to go on a pick nick ride Saturday, once clocked here at 14 MPH for almost 2 miles, on a single speed 20 inch ( Walmart ) bike ! Had to be spinning over a 100....( LOL ) she is a Daddy's girl...( BUT FASTER ) ! Richard

Just out of curiosity, what kind of frameset, stem do you have? What is your height and inseam?

There is a sizing calculator at the Colorado Cyclist website. I think that you have a very laid back position which looks comfortable but might not be that fast. My impression though is that your knees seem to go high as you pedal. This would suggest a low seat. I got a trick in a bike shop once. One way to find out if your seat is up to high is when you have pain behind your knees.

If its comfortable, you're fine.

Is your right leg longer?

Kinda of strange..
 

The top tube is angled at a very sloping down position, so it gives the appearance my knee is
going to high, the stem is adjustably one from Shcwinn Trailways. I have tried about 3 online
fit calculators and they all come up with I need a large..I'm 5' 10 and 3/4" with standard
tennis shoes on inseam 31.5 with shoes...Now the frame on the Cannondale f4 measures out larger than the Trek,
and the Schwinn larger than the F4..Longer wheelbases, etc....the F4 is a medium, but
because the Headshok only comes in one size they just have to slope the top tube as it goes from XL to S, The Trailways has the same style tube slope. But the wheel base is the same as the F4 in L, ( basically ), the Trek much shorter than both..Now I am afraid of riding
the F4 that might cause me knee damage, but can get the exact same center of crank to top of seat position and adjusted correctly according to forward and aft position, and same handle bar reach..but the Trailways bars are 5 1/4" above the seat, and the F4 is even with the seat. After riding the F4 around 100 miles now I have noticed a little soreness on the back side of my arms, I'm sure that was due to the more aggressive riding style and little extra weight shifted to the arms....One has 700c wheels the other 26" and the only real
difference in frame is the F4 wheel base is 42. something inches, and Traiways is a little more than 43, The Trek 19/48cm large wheel base is only 40 1/4 inches...700c weels also,
Here is the best example I can give you...It is driving me CRAZY ! I think the F4 looks small
to, but that could have to do with the wheel size, and in this video I had the seat to far forward... I They both seem to fit well
the Trailways is like riding the couch it is so comfortable :lol: and the F4 just feels more
aggressive but with the same fit..I NEED ADVICE PLEASE !:crash: :crash: Thanks Richard

Here is an example of what I mean.. His has a seat post of 18",
and a wheel base of 40" the bike feels to small for me...The bike shop just wants to sell me a new large, I have about 1/2
stand over, XL can only ride one hat does not have suspension seat post, need seat all the way down, I think the F4 is
ridable safely, ( not damaging my knees and so fourth, ), but confused to the MAX...Richard

Your son's bikes does not have an 18 inch seat post!

THe bike shop guy who I'm sure is a nice guy is trying to make a sale. There is no reason you need a larger frame and there is almost no chance of suffering a knee injury due to poor fit from the Cannondale as you have it currently set up.

I like your position better on the F4 than on the Schwinn. You say the F4 is an XL. I do agree that at 5'10", you probably are a candidate for a size Large. Thus, you might find the top-tube on the F4 to be a bit long. If so, you can compensate by running a shorter stem.

You asked about winter. I dabble with riding in winter. Here's a link to the winter bike that I built up a couple weeks ago:

http://www.facebook.com/album.php?ai...&id=1008607209

The album is public. You shouldn't need a facebook account to see it.

Mostly in winter, I just ride around town on errands and such. It's a way to get out of the house and avoid being a couch-potato.

That bike in the photos, btw, is a size Large, a 19" frame. I am 5'9" in the shoes I typically bike with.

If you plan on using it on the road, MUPs, and very light trails - it appears that your seat is too low.

An easy start to correct leg adjustment is: to put your heels on the pedals, and peddle backwards. If you can get your leg straight at the bottom, and still not rock on the seat, it should be very close to ideal.

I agree with the other poster who said it looks like your knees get up too high when they go over the top.

If you plan on using it like a real mountain bike - you are real close...... but, a little forward lean will help you be more aggressive.

You want to look at knee extension at the bottom of the stroke, not flexion at the top, to determine correct saddle height.

"An easy start to correct leg adjustment is: to put your heels on the pedals, and peddle backwards. If you can get your leg straight at the bottom, and still not rock on the seat, it should be very close to ideal." Yep, this works great. It's not rocket science.

If you need a picture of the tube on my son's bike, I will take one, can read a tape measure..I think the F4 fits me great !
I was up loading 2 videos to YouTube, so after all the adjustments on both, took them out for an ride. 3.5 miles each, I was Balling on the C-Dale, I think do to the more aggressive riding style, putting more weight on the pedals instead of the BUM.
But for comfort the other hands down felt better...Probably could ride much longer distances, I gave up on changing the F4 to
a Hybrid....( LOL )..it's a MTB..Both vdeos, other one.. I will be so glad when hunting season is OVER, I miss off
roding... Richard : )

Thanks Wander and I agree with you .. Richard

Thanks, that is what I have been doing, but everyone seems to have there own opinion of the correct method..Richard

Here is a short video of both, ...Thanks for the help.. and the comfort
style Hybrid.. .....They both have there place.. Richard : )

I think they both fit you. How does the Trek figure in the mix?

Project bike I picked up off Craigslist, was a great reference point for measurements.. Richard : )

All looks good to me. You've a nice place to ride.

Thank You, it has an almost 1/2 mile up hill driveway to the main road, ascending well over 300 ft. ( Gravel ) and rough, fun to ride down, but
almost always push when going on a road ride. But it does have some pretty good places just to ride around, it is in the middle in the middle of
35 acres.. Richard : )