Monday, May 20, 2013

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Stone Grinding & Waxing Services

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Boulder Nordic Sport is a full-service ski shop offering premium stone grinding, ski and waxing services at our retail locations in Boulder, CO and Portland, Maine and now at events with our traveling race service shop, BNS Mobile.  Top racers from across North America send their skis to us because we do the best quality work in the country.  Have your skis prepared by the pros and see how much better they go!

BNS Mobile

BNS Mobile - Professional Race ServiceThe BNS wax crew hits the road in our new rig, BNS Mobile, pushing our goal of providing World Cup Service for Everyone at events across the country.  BNS Mobile travels to races offering professional race waxing services and a mini-BNS store. It serves as a base for our testing and waxing operations and is a great resource wherever you are headed.  Visit the BNS Mobile page for more information, including event schedules and the latest test results and wax recommendations.

Stone Grinding

Stone grinding flattens the ski base, removes burnt and damaged base material and provides important micro-structure.  Bottom line, it makes your skis faster and easier to wax.  We have advanced Tazzari stone grinding machines set up in our Boulder shop.  Skis can be dropped off at our Boulder, CO or Portland, Maine stores.  If you are shipping skis to us, please ship directly to our Boulder store.  Click this link to see our Stone Grinding Menu and Service Schedule/Lead Time.

Hot Box Wax Treatments

Saturate your base with wax for durability and glide.

Basic Saturation $19: Basic Saturation involves applying a very soft paraffin wax to the ski and placing it in the heat box for 90-120 minutes at a temperature of about 55 degrees Celsius (131F). This ensures excellent saturation of the base. The skis will need to be hardened with colder wax for the appropriate conditions.  This hardening can be done with 2-3 layers of ironed-in wax or hot box treatment.

Extreme Saturation $29 (Recommended): This is a two-step process with the first step being application of a very soft paraffin which is placed in the heat box at low temperature (50-55C) for a long time (6-12 hours).  The skis are scraped and a harder paraffin wax is applied followed by the heat box at 60C for approximately one hour.  This second step is still very safe for the skis, but the temperature but may hasten any inevitable movement of the base away from dead flat.  We notice that some skis, especially older models, tend to get concave tips and tails after heat boxing, even after grinding.  The same thing will happen over time and with ironing, but the heat box may accelerate the process.

This treatment will saturate the base and then harden it to a level where it can be race-waxed with high-temperature fluoros and cold waxes.

Race Ready $49: Extreme Saturation plus finish with the specified Swix race wax (LF, HF or HFBD).  The skis are saturated, hardened and then two layers of LF/HF are applied, scraped and brushed, leaving the skis ready to race or for application of Swix Cera F pure fluoro.  Cera F treatment can be added for $20.

Race Wax Services

BNS wax techs offer race waxing services out of the shop and on-site at several events each winter.  We can prepare your skis for any race, just bring them in and we'll get them ready to go.  $39 for High-Fluoro (LF & HF Layers) and $85 for pure fluoro (LF, HF + Pure Fluoro). 

Weekly Nighthawks race special: $15 for a race prep LF wax.  Drop your skis off any day by 3PM and pick them up the next day after 2.
  

Wax Recommendations

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Boulder Mountain Tour Friday Wax Recommendation

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Wild weather swing makes it interesting

There was a wild weather swing Thursday night with a dramatic inversion making the snow warm and wet at the top of the course and colder and harder toward the finish.  Conditions are tough, but the strong waxes that test well in broad ranges are shining through.  Read inside for test results, a report and our full recommendation.

Boulder Mountain Tour Wax Report

Feb 5, 2011

10AM start with waves following

Forecast

Click here for the latest weather forecast from NOAA

Friday Afternoon: A slight chance of rain and snow. Cloudy, with a high near 41. North wind around 5 mph. Chance of precipitation is 20%.

Tonight: A 20 percent chance of snow. Mostly cloudy, with a low around 21. North northwest wind between 6 and 10 mph.

Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 33. North northwest wind around 10 mph. New snow accumulation of less than a half inch possible.

Today we tested at Prairie Creek at about the 10km mark.  There was another large inversion with temps at just above 15F in town, but 40F at Prairie Creek.  Snow temp was 0C when we started testing at 9:15AM.

Test Results

 Test Fleet 1

 

Rank Base1 Time  % back Confidence
1 SkiGo C105 12.02 0.00% 97.71%
2 Holmenkol Mid 0.29 2.45% 22.93%
3 SkiGo C44 0.36 2.98% 12.34%
4 Holmenkol Matrix Blue 0.42 3.52% 26.53%
5 Holmenkol Mid 08 0.46 3.83% 48.39%
6 Holmenkol Mid 02 0.47 3.91% 70.67%
7 Holmenkol Matrix Red 0.48 4.01%  
8 SkiGo HF Violet 0.55 4.56%  

Test Fleet 2

 

Rank Base1 Time  % back Confidence
1 HF7 12.71 0.00% 93.17%
2 SkiGo HF Violet 0.07 0.58% 44.04%
3 HF6 0.10 0.80% 50.91%
4 HF80 0.55 4.35% 92.80%

Discussion

The conditions were tough today and the variation was so high that it is really tough to make a call on this race. We had some wind during our glide test, and we decided to throw out the C105 results because everyone who got on the skis felt that they were terrible.  There was one data point in the C105 results that skewed the results, so we guess that we had a big tailwind for that particular run.  The conditions were quite dramatically different at different parts of the course today and the best approach is going to be to find waxes that have broad ranges and are good in everything.

For the fluoro powders, everyone picked the Mid and Mid 02 for feel, which matches up with the test results.  We did not test it, but we heard that Swix Super Cera was also great today, so that would also be a good choice.

For the glide paraffin, we were surprised to see Holmenkol Matrix Blue win the test today.  It didn't just win the test, but it felt amazing on the snow and blew everything away in the speed trap.  It should be a good choice and is a safe bet unless the weather changes dramatically and warms up.  Swix HF7 has been consistently in the top of our results, so we also think that is maybe even a better choice than the Matrix Blue since HF7 has been among the top results in every test we've run so far, while Matrix Blue was in the running yesterday, but amazing today.  Either one of those is probably a good call.

Recommendation

SkiGo LF Graphite and Holmenkol waxes are available for sale in Hailey at Sturtevants.  Nathan Schultz is doing a wax clinic at Sturtevant's Ketchum store at 2PM Friday.

Prepare skis by brushing and cleaning with a fluoro cleaner (glide wax cleaner, not kick wax solvent) or hot scrape with a warm wax.

If you have two or three pairs of skis, this would be a good time to hedge your bets and wax up multiple pairs to cover all the possible outcomes.  It seems likely that conditions will be much like today, but there is also a possibility that new snow will come in and the temperature could be colder than predicted.  Smart skiers will wax a cold option and a warm option, and possibly be ready for it to be warmer than expected.

Base Layer: SkiGo LF Graphite ironed in at 145-150C, cool, scrape brush well with steel brush.

Base Paraffin: Swix HF7 or Holmenkol Matrix Blue (see discussion above)

Fluoro Powder: Holmenkol Speedpowder Mid or Swix SuperCera FC78.  Iron, let cool, brush with a stiff nylon brush followed by 2 light passes with a soft steel micro brush, then polish with a fine nylon or horsehair brush.

Optimizer: Holmenkol Mid Block hand corked on top of the Mid Powder application.  The optimizer will increase speed for about 10-15km when put on top of an ironed fluoro application.  The hand-cork is the application which provides the most speed.

Structure:  This is a tough call.  Fine to Medium structures were running well today, even in the wet sections of the course.  Adding hand structure will probably make a big difference on race day, but if it cools down much over today, it could also be a liability.  Among the hand structures we tested,  the Holmenkol cross structure tool with two rollers was excellent, with the best being the Finite Finish V05 with L04 on top.  We are going to wait until race day to apply hand structure based on the conditions.

note: BNS imports Holmenkol and SkiGo waxes, and also sells waxes from Swix, Toko, Rode, Solda, Rex, Guru, Innovax, Magnar and others. We search for the fastest waxes for our customers and our testing is professional, objective and transparent. We make our best effort to test what we think is the best from each brand.  However, given that we are testing more options from Holmenkol and SkiGo, there is a bias toward those brands.  With this full disclosure, you can assess the legitimacy of our testing yourself. Visit Swix and Toko for their official recommendations. If you have any questions please contact us.

 



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