Addition #4: I'm finding each frame has it's strength and weakness. Half of the training that I do is in a draft behind a bike at high speeds. I would use no other frame behind a fast bike than the 100mm wheel Xenan frame. There is no other frame I can attain and hold the high speeds I can behind a bike then with the Xenan frame. Different situation, I show up for a training skate and there is no bike and it is quite windy. There is only me and a moderately fast person to work with. I have the Xenan's on and can't pull to save my life. Where normally I have no problem pulling away from this person I can barely hang.
Speeds to bring my cadence up high enough to make the Xenan efficient are not met. It feels like I'm pedaling up a hill in 10th gear on a 10 speed bike. I could barely keep up with this person much less pull. Next lap put on my Bont Slingshot clap frame. Skated like I was shot out of a gun, I had to slow over and over to let the person catch up. Into the wind you could get so low with the clap and at the same speed with the clap my cadence was much increased so instead of feeling like I was going up hill in 10th gear I was now in 2nd gear and screaming up the hill.
It didn't matter how strong the wind was you could just bang through it. Would I wear the Xenan again on a windy day with just two of us? No. Same thing behind a bike with the Bont Slingshot clap. Trying to follow a bike at 23 to 26 mph with a clap is like being in 2nd gear on a bike and trying to attain 23 to 26 mph, your feet would have to be moving so fast you would burn out very quickly. Now these are two different types of training sessions. Now a race is different again. Using the Xenan in a race the pace would have to be extremely high (like doing the whole race in 10th gear on a bike) and you would need a perfect draft and forget about pulling.
Also if you were to drop from the pack on a Xenan frame which is like being on a bike in 10th gear you are going to have problems. Same with the clap. It's like being on a bike where through the whole race your in 2nd gear. When the race starts using the clap your fine as you have a very low gear to start in but 1/4 the way into the race you start to tire because your cadence is so high. Now when you drop with the Clap you couldn't have a better frame to drop with, not that your planning on dropping but if you did you have the best possible frame for the situation. Now there are two other frames better suited for the middle gears needed in a race.
One would be a standard high profile fixed frame and the other a mid or low profile fixed frame. I would say the high profile would be like being in 8th gear and the mid profile like being in 6th gear and the low profile like being in 4th gear. These are just guestimates but you get the idea. Being on a high profile frame you could pull a bit in the race where on an Xenan forget it. Also with the high profile frame your cadence would be a little higher than the Xenan so if the race had an average speed of 21 mph the high profile would be better as the Xenan frame would need the average speed of 23 or 24 to be efficient or be in the right cadence range.
As you can see there are two different ways you can drop from a race, one is skating on a frame that is in to high a gear (10th gear, Xenan) and you drop because your legs give out but your cardio is ok or you are skating on a frame that is in to low of a gear (2nd gear, clap frame) and you drop because your cardio gives out but your legs are still ok. You have to decide why you are dropping from a race, is it because your legs are giving out because your skating on a frame that is in to high of a gear or is it because your cardio gives out because your skating on a frame that is in to low of a gear. Frame requirements can change from race to race so just because a high profile frame worked well in one race dosen't mean a low profile frame wouldn't work better in the next. For skating high speed in a bike draft I would suggest the Xenan frame. Once you tried an Xenan in a high speed draft you wouldn't be able to go back to any other frame for skating at high speed.
The Xenan frame could also be used in a race with a very large pack where many fast people are rotating taking pulls to keep the pack speed up and with the large pack it would make for a good draft. Remember using this frame is like being on a bike in 10th gear so the speed has to stay high and forget about pulling and the less intervals throughout the race the better for this frame. Next would be a fixed high profile frame. This you could use in a large to medium sized pack and you would be able to take a few pulls with this frame. It would also work better for intervals throughout the race be cause of the feeling of being in 8th gear as opposed to 10th with the Xenan. Next would be a mid or low profile fixed frame.
These would work good in a smaller pack where you may need to do more pulling and the pack speed would be lower. You would have to watch out though because if your in a big pack of people on high profile frames that are in 8th gear and the pace really picks up your going to over rev on a mid or low profile frame that is in 6th or 4th gear. Then there is the clap. Even though the Bont Slingshot clap is a high profile frame the clap mechanism of the frame makes you feel at though you were in 2nd gear. This frame is good for skating alone (pulling) or doing time trial races (pulling) or if there is just two of you and it's windy (pulling). Did I mention this is a good frame for pulling?
What would work good is to be able to lock a clap frame which would make it a high profile fixed frame (8th gear) and use it that way in the beginning of the race then if you were to drop off the pack in the middle of the race and have no one to draft you could release the mechanism and then you could use the clap mechanism of the frame (2nd gear). Then if you saw a pack coming from behind you could again lock up the mechanism to make use of the draft (8th gear). Simply put, with no draft to work with your better off on a clap frame and with a draft to work with your better off on a fixed frame.
Another thing I would like to see is a 100mm wheel clap frame, so if you locked it up you would be in 10th gear (like the Xenan) then when you released the mechanism and used as a clap you would go from a standard 2nd gear of a 80mm wheel clap to 4th gear because of the bigger 100mm wheels. You would have a Xenan frame (10th gear, extreme high speed) and a low profile frame (4th gear, for pulling) all in one.
I will now try to have a setup for each skating situation, so it looks like I will need 3 or 4 setups, unless I am able to lockup the Slingshot clap then I would only need 2 setups (an Xenan and a Slingshot as the Slingshot would double as the clap frame and the fixed high profile frame).