Arm Pump... Bars??

[letsride24-7]

OK, Here is my issue. Well as long as i had my 99 kx125, after a good 45min on the track or say 1hour at race speed in a harescramble I get arm pump.. Now i'm fit and work out regularly, but it always seems to happen. Well this weekend i let my buddy ride my bike. After about 15 minutes he came back complaining about the pump.. He said he never ever gets it riding his 97 kx125.
So i figured to take a look at the 2.. I did ride his bike yesterday for
a good 30 minutes and did notice no real arm issues..

So besides the years, this is what is different, and i'm only going to list the things that i think would matter..

His bike is a 144 now mine is still a 125..??... He uses High KX bar bends and i use low KX bar bends.. We run about the same air pressure in the front tires and brands...

Also i'm 6'2" so maybe it is that i should be running high bars.. But anyway what do you guys think??

Thanks

 

[IndyMX]

Sounds like you figured it out... If the high bend works for you, put them on your bike.

I doubt that there is a single "fix" that will fit every rider or bike..

 

[letsride24-7]

Yea i'll give that a try. Just was wondering if any buddy has been down that road.. Thanks Indy.

 

[HajiWasAPunk]

My experience has been that only riding more often will fix arm pump, nothing else seems to make a lasting difference. I found that when riding someone else's bike I wouldn't get it as bad until someone pointed out to me that I wasn't pushing it as hard.

Once I did that, the arm pump level was no different.
If you're turning 30 minute mottos before you notice it on an MX track, you're in great shape.

 

[Solid State]

If you're turning 30 minute mottos before you notice it on an MX track, you're in great shape.

After pushing hard for 30+ min something has got to give. Rather get arm pump than knee pain IMHO.

 

[letsride24-7]

I found that when riding someone else's bike I wouldn't get it as bad until someone pointed out to me that I wasn't pushing it as hard.
=

That could be it.. My buddy might have to push my bike harder since he is used to the 144 power spread on his bike.. and i could ride his just as fast but relax more. Still going to try the bar bend just because, well bars bend! and it's good to have extras :nod:

 

[letsride24-7]

After pushing hard for 30+ min something has got to give. Rather get arm pump than knee pain IMHO.

Yea that's true.. I had ACL's done in my knees... But still i ride enough and during a harescramble i pretty much have to stop for a few or i'm most likely will be taking a soil sample. I due drink all my camelback to fast too. Why can't i just be a pro with no issues.. :rotfl:

 

[IndyMX]

It could be that for your size, the high bend puts you in a position on the bike that is more comfortable and helps you relax on the bike.

There's only one way to find out.