Power Kite Forum

Why cut down a land board?

43patrick - 3-11-2013 at 04:31 PM

I have been riding an mbs core 90 with skate trucks the last few years and just got a comp 95. It seems way stiffer and heavier than the core 90. I am not worried about heavy, but would cutting it down make it more shock absorbent on rough ground?

MeatÐriver - 3-11-2013 at 06:16 PM

I'd be concerned that trimming it down would compromise the integrity of the veneers in the board. If not from a pure strength angle then its ability to resist moisture. Though I have no facts to prove this either way.

BEC - 3-11-2013 at 06:26 PM

Woodworker opinion only....I have glued up hundreds of plywood planks....If the board was laid up right then cutting it down in size would not hurt the integrity...moisture on the end grain (maybe) but you could tape off the top and bottom surfaces and put at least 3 or 4 coats of clear back on....The first couple coats will soak right in until it seals......

I would think that shortening any wheel base would make the ride stiffer and harder .There would be less bounce/flex to the overall board...


BEC - 3-11-2013 at 06:29 PM

Cutting it down as in like making it less thick?...then yes that will totally make it weaker.... ex. you can't go from 5 plys down to 3 and have it be as strong...I meant shortening the overall length....no issues

erratic winds - 3-11-2013 at 06:39 PM

Removing wood from the board has a better chance of removing structural integrity rather than add flexibility.

All boards in the COMP series are tougher and stiffer than the CORE series, and sizing up to 95 from 90 is additional weight gain.

You could investigate differing spring settings, and try a slightly lower wheel pressure (like 45 instead of recommended 50).


indigo_wolf - 3-11-2013 at 06:43 PM

Most decks that are cut are fully synthetic. Trampas are popular candidates because they are made of a woven themoplastic and resin.

The MBS boards are wood veneer laminates, under fiberglass layers, with a TPU top and undercoat for graphics.

As soon as you start cutting into that, you are going to expose the maple veneers which will then be vulnerable to water absorption and delamination. You could reseal them with resin.... expect the resale value of the deck to take a dramatic hit though.

Any angular cuts versus rounded cuts will create focal stress points.

The MBS literature is never clear as to which if any of their boards use stringers. Stringers are v-shapes or rectangular fiberglass rods that run the length of the board to fine tune flex characteristics.

If the Comp 95 uses stringers and you don't know where they are located, you can majorly hose the board by cutting into them.

ATB,
Sam


BEC - 3-11-2013 at 07:01 PM

Now reading more.....I was only talking about a wood board (like longboard skateboard)...I do not land board and had no idea that they were made like that so....I would listen to Indigo about your board going to crap if you cut it (function and $$).....Normal just glued up veneered plywood ( 1/8) layerd in different directions would be ok...this is not the case here.

A man made material combined with wood, epoxy, resins etc would not fair out too well....

PHREERIDER - 4-11-2013 at 07:40 AM

don't cut it! . it will soften over time.. AND

for a softer, smoother ride in the rough------> drop tire air pressure enough to change,, will take MORE power to run, and a little slower. effective, reversible, no buck change.

MeatÐriver - 4-11-2013 at 07:52 AM

Come to think of it, I think your thread title says it all.... "Why cut down a land board?!" :D

MeatÐriver - 4-11-2013 at 07:53 AM

Wuh-wah. Double post.