Light V heavy build extended test- Mtbr.com
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  1. #1
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    Light V heavy build extended test

    Light V heavy build extended test-img_20190420_151909.jpg

    A couple of months back of cracked my Rocky Mountain Slayer frame. I claimed insurance and purchased a new Slayer. I also repaired my old bike and ended up with 2 Slayers.

    So I decided to indulge in some decadence and keep the old Slayer and build one bike as the light pedal/general duties slayer and the other as the heavy duty mountain slayer.

    Locally i do 2 distinct types of track. General riding around town and at the local bike park. These a generally green/blue runs with occassional black features. The second type is doing a push/pedal up the local mountain hitting some crazy chunk on old abandoned hiking trails not built for biking. These tracks have some real tech, steep, gnarly, rooty, rocky sections. Some sections are well past a tech level of what you find in a bik park.


    New Slayer became the light build after some parts swapping light slayer comes in at 13.5kg (29.7pd) including pedals xtr spd's. I'm running the 170 lyric on the front to give pedal slayer 165/170mm travel. Tire spec on light Slayer is 2.35 3c exo minions front and back.

    Heavy Slayer comes in at 15kg (33pd) running flat pedals and with identical tyre spec and 15.5 kg (34pd) with dh tire spec. Running flats and 180mm fox 36 upfront.


    The main difference in weight between these bikes is wheels/tyres/handlebar/stem and i have added about 200gram with a carbon repair to old slayer. So its maining rolling weight thats chances.


    First test was same tyres same suspension sag set up. Immediately noticable was the difference in acceleration, turning response and climbing ability. Light Slayer kicked arse. It was more fun for pretty much everything. In light mode it felt like a 130mm bike for climbing performance. But then on the down you still have 165/170mm to hammer the black runs. A truely sensational build for general/hard hitting duties.


    Heavy Slayer definately felt like a heavy slower rolling big travel bike. With rolling the same tyre combo i struggled to find an advantage of heavy slayer. The wheels are stiffer which made for better smashing of burms and the additional 10mm of travel slacked the bike out 1/2 and made it slighty better in the ultra steep. Also it was less twitchy on the down. None of those point made the heavy slayer the build of choice.

    Next test was changing tyres to Roll 2.5 minions on heavy build. Things got more interesting now. 2.5 tyre heavy Slayer now tracked better in the chunk. It was heavier again but I felt a slight performance advantage on the down. Heavy slayer was now a better choice for the gnarly mountain tracks I ride. Flats made it easier in the tech and the 2.5 tyres handle the chuck better. Next test was to adapt the suspension to suit the mountain tracks. Rather than running a general setting that light slayer has for general riding i backed off the pressure in the rear shock and bumped up the pressure on the front. This was to account for more weight on the front on the steep mountain tracks. This gave heavy slayer an additional advantage in the gnar.

    Finally last test has been to swap over to DH wall super tacky 2.5 minions.
    Wow what a transformation that made. Heavy slayer now a full 2kg lighter than light Slayer. Rolling weight increased dramatically. Dh tire slayer is a slug and pedals like the heavy big hitting bike that it is. Its no longer fun for general riding. Sure the traction increase is awesome but thats offset by the slow sluggish pedalling and uphill performance. Until you get to serious black or harder descents heavy build is worse than light build by a long way.


    But.... when i take heavy mountain slayer build up the mountain and hit the super chunk fest on the way down..... jesus i'm grinning like a school boy whose just discovered pornhub. The tracking over roots and rocks and ability to slam through the chunk is way better. Its a significant performance advantage over light slayer build. Its my tool of choice for the mountain.


    Putting the dh tires on has essentially transformed heavy slayer from a good hard hitting trail bike into a capable light weight dh rig. It can handle 95% of gnar that my rig handles and then its pedallable for flatter and up sections.

    My conclusion is that light slayer is the better overall bike. It hasa far wider performance window and can hang with the xc guys pedalling and the dh guys descending. Heavy Slayer is more single purpose of smashing hard hitting down track. In in that element it is oh! for awesome.
    Attached Thumbnails Attached Thumbnails Light V heavy build extended test-img_20190419_195807.jpg  


  2. #2
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    Quote Originally Posted by plummet View Post
    A couple of months back of cracked my Rocky Mountain Slayer frame. I claimed insurance and purchased a new Slayer. I also repaired my old bike and ended up with 2 Slayers.

    Wait, so you're saying you've got some insurance fraud going?

  3. #3
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    Quote Originally Posted by mikesee View Post
    Wait, so you're saying you've got some insurance fraud going?

    Yeah, you might not want to admit that on a public forum...
    It is the Right of the People to Alter or to Abolish It.

  4. #4
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    29.7 pd and 34 pd. What's that in lb?

    It aint necessarily fraud. If the insurance co lets you keep the legitimately claimed item, it's up to you what do with it, including repair it.
    Do the math.

  5. #5
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    No insurance fraud. I crashed hard, damaged the frame, someone suggested it might be covered under my house contents insurance. I rang the insurance up and gave them an open and honest account of the accident and they said yes it is covered.

    The insurance paid out for a front triangle replacement and did not write off the bike. This meant the old bike remained my property as they were paying for a repair. I chose the option of cash payout, found a brand new Slayer online for a crazy discount and bought it.

    As i have carbon experience i was also able to repair the old front triangle. By doing a home repair the frame i have increase the frame weight and made the bike heavier.

    Which leaves me with the decadence of 2 of the same bike.

  6. #6
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    Had the insurance written off the bike and paid out for a replacement then the bike would have been their property to sell to recover cost.

  7. #7
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    Thanks for the write up. That was really interesting.

    Have you tried the light build with the heavy tires? Do you think you'd still feel an advantage with the heavy build otherwise or is it all tires?

  8. #8
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    No I haven't tried light build with dh tyres. I reckon that would be sweeeet. Heavy build does have stiffer wheels. Which I do notice, but I don't think it actually changes my speed down the hill.

  9. #9
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    Quote Originally Posted by plummet View Post
    No insurance fraud. I crashed hard, damaged the frame, someone suggested it might be covered under my house contents insurance. I rang the insurance up and gave them an open and honest account of the accident and they said yes it is covered.

    Huh. Surprising. Good for you.

  10. #10
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    Cool write up.
    thx

  11. #11
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    Went for another comparison ride yesterday down a steep as mountain track on my "pedal" slayer. Light Slayer is a lot more playful. Its chuckable and just so much fun to ride.

    Where there is a chunky roots and rocks dh tire slayer just tracks so much better through the chunk, But if you have loam or steep of stuff without the stupid chunk the light slayer owns in.


    The relality is that it has to get pretty rowdy before light Slayer is surpassed by heavy slayer for grin factor.

  12. #12
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    Cool. Thanks.

    Old school chunk is just getting too hard to find these days, making truly burly bikes less desirable. Highly manicured, man-made trails are the way things are going. I find moving over to lighter, nimble, more pedal friendly builds are best for every day riding. Riding the "non-bike" trails are my favorite still but like you said are left over hiking trails. The big bike, gnar, happens on the DH bike with lift assist.

    Thanks again for the write up.

  13. #13
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    Quote Originally Posted by Miker J View Post
    Cool. Thanks.

    Old school chunk is just getting too hard to find these days, making truly burly bikes less desirable. Highly manicured, man-made trails are the way things are going. I find moving over to lighter, nimble, more pedal friendly builds are best for every day riding. Riding the "non-bike" trails are my favorite still but like you said are left over hiking trails. The big bike, gnar, happens on the DH bike with lift assist.

    Thanks again for the write up.
    Yeah, I definately enjoy the old school chunk fest with roots and rocks and off camber goodness.... Its a sad thing that they are removing the chunk from the bike parks.

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