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Lange RS130 installing booster strap - Page 2

post #31 of 55
Quote:
Originally Posted by givethepigeye View Post


 


Many have 2 - one on the outside for "show" and $, one on the inside for "go".  If you like it on the inside more power to you, I do as well.  Not certain I see the value in something stretchy that would come into play after my shin/tongue mashed up against the hard plastic of the shell (strap on outside) - but different strokes and all.
You have to ask yourself why most high end race boots either have cuttable tabs on the front to allow the use of a booster strap outside the shell, or have cuffs low enough to allow its use use.
The whole point of the booster strap is to let the upper cuff of the boot deform, which a traditional power strap doesnt allow, and to give the boot some more rebound during turn transitions. Having it on the tounge or on the shell doesn't make a ton of difference for me for the first one. For the second one it works better on the shell.

A lot of boots do come with strechy power straps now. The one stock on the dobermann 150s is nicer IMO than my expert booster strap because its softer and has better rebound when you release the skis.
post #32 of 55
Thread Starter 
I have the spoilers so the forward lean is 15. I ran the booster strap around the outside with the booster over the liner only. The flex was just right in 5 degree weather and very progressive. The boot was very quick in response a huge improvement over my x max 130.
post #33 of 55
Quote:
Originally Posted by mudfoot View Post
 

I believe the instructions for the Booster Strap tell you to run it around the liner, over the tongue and inside the front of the shell.  I tried that on my Lange XT 130s, which is basically the same shell and liner configuration as the RS (just softer), but hated it.  Since the Langes are already very upright with only about 12 degrees of unchangeable forward lean, putting the thick part of the strap inside the shell makes you way too upright and difficult to lean forward.  If you are going to use it I suggest just replacing the stock power strap and run it outside the shell, which will make the flex softer, but more progressive.

Yup...

 

Quote:
Originally Posted by hbear View Post

This is how I run mine in th XT130, pressure in on the liner and a small portion of the cuff.
There is a notch between the inner/outer cuff that my booster strap tracks along.

Same boots, same way to put the strap and just love it!

post #34 of 55
Thread Starter 
+1
post #35 of 55

Woke up this morning at the sound of the news... Heard the name of Sarah Paulin and Trump in the same sentence...I felt sorry for my southern neighbors ...:dunno

post #36 of 55
Quote:
Originally Posted by mogsie View Post

Woke up this morning at the sound of the news... Heard the name of Sarah Paulin and Trump in the same sentence...I felt sorry for my southern neighbors ...th_dunno-1%5B1%5D.gif
Yeah that's a booster strap alrighty ....
post #37 of 55
Quote:
Originally Posted by mogsie View Post
 

Woke up this morning at the sound of the news... Heard the name of Sarah Paulin and Trump in the same sentence...I felt sorry for my southern neighbors ...:dunno

 

Loony tunes seem to always be popular.   

post #38 of 55
Thread Starter 

I was really amazed I could bend the boot in 5 degree weather with all the write ups about how stiff it is. I have a hunch when you use the stock strap it changes the flex demonstrability.

post #39 of 55
Quote:
Originally Posted by levy1 View Post
 

I was really amazed I could bend that ski in 5 degree weather with all the write ups about how stiff it is. I have a hunch when you use the stock strap it changes the flex demonstrability.

Did you had a big meal before? ;)

 

So, happy about the straps?

post #40 of 55
Thread Starter 

Changed the post.

 

How many lbs is big?

post #41 of 55
Quote:
Originally Posted by givethepigeye View Post
 


Go to youtube ->Starthaus Channel -> Customizing Ski Boot Flex @ about the 6min mark.  Im not a bootfitter, but this is not that hard (although not reversible) and I did it to Patron Pro/Dobermanns - just ground down the area so the booster strap could run on the inside back near the spine of boot - just like Jim did.  If you don't have a dremel, well, it might be hard :) 

hello, what nordica boot is that in the picture? it seems a Dobermann Pro, judging by the buckles

i have a WC 150 older model, that has the same outside shell as an EDT Pro 130 but it has a narrower last of 95mm

i've replaced the stock strap with another stock strap taken from a EDT Pro 130 model, that has the roller joint on the outside, but i find it annoying sometimes because it loosens over time and i would like to replace it with a booster strap placed on the tongue and i was wondering if it fits ( this stock strap is very wide and thick when closed so it can't fit between the shell and the liner, and as i can see, the booster strap is much thinner on the sides and flexible )

 

this is the stock boot as i bought it, it's a weird model in my opinion, because it has the appearance of a pro model, but the interior is allmost as narrow and stiff as a wc model...at first i thought it was a marketing scam model, but browsing around on youtube i saw that viki rebensburg had this exact boot in 2011/2012 season so it must be the real deal, it's an excelent boot and that's why i think it's worth switching to a booster strap, for better performance

 

CREATOR: gd-jpeg v1.0 (using IJG JPEG v80), quality = 100

and this is the boot with the other type of strap

 

post #42 of 55
Thread Starter 
Install your booster strap make sure it goes under the plastic of the first Buckle.You may have to trim the top of the plastic on the first buckle. Look at the plastic on the bottom of the second buckle. Make sure that that does not engage early stopping you bending the boot. See videos from starthouse.
post #43 of 55

it should fit without plastic removal, i found this pic of a boot with a narrower strap that seems to go above the shell

the second pic is a youtube screenshot from one of vicky rebensburg's training videos, i see she uses it over the shell, or maybe it's not in tension there

i spoke with a junior racer and he says that he uses it under the shell for SL and GS, and over the shell for SG and DH

 

LEAD Technologies Inc. V1.01

 

post #44 of 55

i took the boots out of the box yesterday and i think the booster strap can be mounted higher by making the holes in the material below the half part and being more flexible than the standard strap

don't think it's a good idea to cut the shell on the side, only above that dotted line on the front above the buckle

 

 

 

 

i think that all high end boots should have a power strap system, and obviously the existing lack of this feature on most of those models is related to a patent issue.

i will order one on eBay for the next season, sadly nobody sells these in europe, at least i didn't find them anywhere around here, and probably because they are a cool upgrade, nobody sells them second hand, because they don't have any reason to sell them :)).

 

studying my motion in these boots i concluded that this fixed strap is not that good because it impedes a fluid forward flexing motion, being set in place by a velcro that loosens after some runs, and if i tighten it too much, it makes my stance a bit too upright for my taste, and if i happen to hit a bump, it hurts wildly.

i have thin calves and my stance is a bit more upright anyway and i think this gadget will improve my level

post #45 of 55

i got the straps today, but hadn't had time to mount them yet, just placed them on the cuff for some photos.

i think they fit over the tongue and above the shell without cutting the cuff, because the strap is thin and can deform on a vertical plan.

now i don't know exactly how much do i have to offset the cam lock, i think the elastic part should be stretched a bit when engaged, or the motion range of the cuff is rather short so it doesn't matter that much? ( i've pointed out the difference with my finger )

 

 

 

 

post #46 of 55

I've had my eye on the Booster Strap for some time now.

 

Having never used one, my thoughts are the Booster Strap: 1) gets rid of that first 5-8mm of dead space when your (inelastic) power strap isn't perfectly tight, and 2) allows for a more progressive flex of the boot overall, with some extra rebound as a result.  A normal power strap is both inelastic and (usually) not perfectly snug.  You move your weight forward on the ski, trying to influence the tips, and there's a fraction of space there when nothing really happens, then you run into the strap and the flex of the boot spine kicks in abruptly - it's not a linear reaction.  A Booster Strap makes this all more progressive, to a greater or lesser extent based on the model of strap, and also provides for some rebound out of the turn.

 

Does that sort of sum it up for someone who hasn't yet tried one?  I just bought a pair of RS130 (the last model with a standard power strap) and I'm interested to see if I should replace the strap.

post #47 of 55

I've always installed so the cam lock is in the position I would like it to be when the booster strap is used. (e.g. strap is supposed to have stretched a bit when tightened).  This requires you to actually put your boot on and snug the strap; marking the location of mounting holes based on this position.  You'll find the strap end up being offset when you put it on; at least until you tighten it.

 

Installing the booster strap is one of the first things I do when getting new boots.  I don't ever bother with the OEM straps (unless it's already a booster).

post #48 of 55

My RS 140 Langes came with a cam lock booster strap. It is not elastic though, a nylon strap with a large pad on it. Pic below. I am wondering if the elastic version of the Booster strap would be an improvement or the opposite compared to what I have??

 

I think strap works very well when I have it between my tongue and the boot plastic upper shell. I can snug it up very tight and it takes all the play that Sinbad speaks of, out of my boot. Once I compress the tongue padding I feel the strap do it thing and spread out the force of flexing the boots spine. It really improves the comfort and seems to make things more progressive.   As far as rebound, the boot is deformed during flexing and that acts like a giant spring to rebound the boot back into its undeformed shape. I am not sure if a stretchy strap would improve that?

 

I would say if your boot does not have a strap, or a velcro one that loosens, the clamp buckle will be a huge improvement. 

post #49 of 55
Quote:
Originally Posted by bttocs View Post
 

My RS 140 Langes came with a cam lock booster strap. It is not elastic though, a nylon strap with a large pad on it. Pic below. I am wondering if the elastic version of the Booster strap would be an improvement or the opposite compared to what I have??

 

c) no real change, just more tightly stretched at the start (since it will be easier for you to pull to the same tightness) and slightly less progressive, quicker wear out.

post #50 of 55
Quote:
Originally Posted by vmaprilia View Post
 

i got the straps today, but hadn't had time to mount them yet, just placed them on the cuff for some photos.

i think they fit over the tongue and above the shell without cutting the cuff, because the strap is thin and can deform on a vertical plan.

now i don't know exactly how much do i have to offset the cam lock, i think the elastic part should be stretched a bit when engaged, or the motion range of the cuff is rather short so it doesn't matter that much? ( i've pointed out the difference with my finger )

 

As said above, put the boot on and tighten the Booster around it.   Put the camlock where it needs to sit for easy tensioning.     Mark where the mount point needs to go.
 

 

Emphasis:  DO NOT tighten it as tight as you can pull.     It is very easy to pull Boosters too tight.   

Pulling too tight while measuring means the camlock sits in the wrong place.   

 

Pulling the booster too tight while skiing cuts off the blood flow and makes your foot hurt and go numb - except it doesn't do that at the Booster strap so you think something must be wrong with the boot itself.

post #51 of 55

i guess the cam has to stay aft, because the elastic strips need room to expand.

i'll mount it and after skiing next season i will cut the nylon strip if i feel the strap is too rigid

i don't want to cut it now because i can only soften the strips.

 

i'll post some pics later in case any other Dobermann users will be interested :)

post #52 of 55
Thread Starter 
This is been hashed out on epic many times but if you go to the video of the booster it's supposed to be under in most racers have it under but for photo pictures they have it over.
post #53 of 55
Quote:
Originally Posted by levy1 View Post

This is been hashed out on epic many times but if you go to the video of the booster it's supposed to be under in most racers have it under but for photo pictures they have it over.


Um, no....you would be surprised to find how many serious racers DO use it OUTSIDE the shell  (and having tried it both ways, for me it is the ONLY way..:))

post #54 of 55

I'd love to read what an engineer has to say about the mechanics of either approach. Was introduced to under by a racing coach. Long time back. Since then, I've tried both, tend to waffle but may prefer under. Under the shell gives me more sensitivity, different pattern to the flex (less resistance at the top, more progressive in middle); over the shell gives me more leverage, a quicker response. Not sure why, though. Only guess is that under links the tibia to the liner as a unit, so movement between the liner and the shell predominates, while over creates more open space around the tibia, movement between it and the liner/shell as a single unit predominates. Yes? No? 

post #55 of 55
Maybe some models of boots are suited for an over the shell mount,but i think it's role is to be a 5th flexible buckle.
I managed to fit them on today and just by standing in the boots buckled i can tell the difference, there is no gap now, and the fore aft movement is more fluent.
Gladly i didn't cut the nylon strip inside (which would have downgraded them from wc to intermediate ) because they would have been tòo soft for my taste, so i recommend going stiffer because they can be softened easily.
And i confirm that they can be overstretched and the feet go numb right away.
The holes in the back we're given with a hot screwdriver.







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