300EX Fram Problem

[rooster300ex]

I have a 1995 TRX300EX and the frame is cracked close to the footpegs but on the frame not the footpegs. i was wondering if 300ex's have had frame cracking problems often.

[bradley300]

thats the same place mine, and others have cracked. its the only spot i have ever heard of cracking, so weld it up, gusset it and your good to go.

[300XFST4602]

I hardly ever hear of a 300ex or 250x frame cracking... But ya just weld it up.....

[outacontrol31]

I had a 308ex that i raced hard for a year, during that time both sides of the swingarm bolthole on the frame cracked and the nut side completly broke out so watch for that, also the back shock mount area is weak i just had to ordor a frame cause i destroyed it but then agian i race hard motorcross and its tuff on frames so if you dont mx you could be okay

[DEAL]

I cracked the frame on my old 300ex in the same spot also. Had it welded and never had another problem with it.

[Cole Trane]

Near the foot pegs is where you get most of your frame problems, at least from what I've dealt with. Just like they said a weld would work, as long as your not doing hard core riding. Just makes it a "less strong", is that how you would say it??

:confused:

[countypark]

Can you guys post som pics of your frames wear they cracked.

[ghak99]

If you are airing it out big you might keep an eye on those front shock mounts and any welded areas around them.

If you have good shocks this shouldn't be a problem but with a stock setup it is hard on the front end.

[spiderrider04]

Originally posted by countypark
Can you guys post som pics of your frames wear they cracked.

here is where my frame broke.

http://www.imagestation.com/picture/sraid78/p4323cc7c2a5c24a2f830505013e04849/fb272b07.jpg

[spiderrider04]

another

http://www.imagestation.com/picture/sraid78/p49c64167630bb7d91878a01fb29ba8aa/fb272bd3.jpg

[spiderrider04]

another

http://www.imagestation.com/picture/sraid78/pcfb86af8f079d475b848b6ef6ecd3b21/fb272bd8.jpg

[spiderrider04]

last 1. i did 8 laps around an mx track.
http://www.imagestation.com/picture/sraid78/pb84b4d469493da388fded0b7b366d3c8/fb272d37.jpg

[ghak99]

Was there a crash involved and what shocks are under those shock wears?

[spiderrider04]

nope no crash and those are stock shocks.

[ghak99]

The stock shocks explains alot, but are you sure there was not at least a crack before the race?

[spiderrider04]

Originally posted by ghak99
The stock shocks explains alot, but are you sure there was not at least a crack before the race?

lol, yeah some aftermarket shocks would have helped a bunch. i do believe it was cracked before because sometimes when i land a certain way i would here like a weld breaking or something from my front end. i looked and i never seen anything. so i went to the mx track to play around and i did 8 laps and that happened. we got it straight and welded it up and put in some guessetts and it has been fine, but now its my dads and i have a 400ex so its all good.

[ghak99]

I was almost sure there had to be a crack before....The smallest of cracks can cause everything to give and before you know it, it looks like your pics.

Were the shocks blown or soft?

[300XFST4602]

yes , you can't expect you frame to not crack if you are running stock shocks when jumping alot , i mena common sense tells you that.... But other than the frame crackin for everyone , thanks for the heads up , i hope i don't run into that problem but i also have elkas......:devil:

[spiderrider04]

Originally posted by ghak99
I was almost sure there had to be a crack before....The smallest of cracks can cause everything to give and before you know it, it looks like your pics.

Were the shocks blown or soft?


i had my shocks on the stiffest setting and no they weren't blown.
it was my 1st time at an mx track and i did my frame in good. i didn't have the money to buy aftermarket shocks, and plus i was planning on getting a 400ex so i didn't want to dump in money and then go and sell my 300ex.

[honda250xrider]

had my crack there also, im pretty sure its somewhat common for you to see cracks form there... i have also had cracks by my upper front shock mount, and my swingarm... if i were you i would take that in and get it welded up and gusseted

[roostin_dale]

mine cracked by the footpeg too..i got it welded and put gussets there...i have been meaning to make a post about it with pics....i'll get around to it sometime!

[rooster300ex]

Is there anyway u can show a pic of how u welded it up by the footpeg and the gussets u used.

that would be alot of help

[K_Fulk]

I know its not a 300 but here is how my my foot peg are is gusseted. Just to give you an idea.

[countypark]

Is that just flatstock cut and ground and pounded into shape?

[K_Fulk]

I'm not sure how he did it but thats a possibility.

[roostin_dale]

mine is like Fulk's except it is a triangle of steel. It is all filled in instead of one bar..it will be this weekend before i can get pics..

[countypark]

FULK

Is the red area what was added or the blue?

DOES ANYONE HAVE PICTURES OF THE REAR SHOCK AREA GUSSETS?

http://pictureposter.allbrand.nu/pictures/countypark/footpeg.jpg

[bradley300]

its the red, the blue is a stock piece

[K_Fulk]

Red is overlapped, blue is stock.

Here is my rear shock gusset.

[countypark]

Fulk,

That's what I thought. I didn't have a 400 to look at though.

I need pics of the 300 shock mount gussetts.

Tom

[littleman]

the whole back of my frame snapped off right by the grab bar but i havent heard of this part cracking or breaking on any other quad(too many wheelies :ermm:

[roostin_dale]

wow this is an old post...but i see I forgot to post my pics...

Here is where you gussett the 300ex frame by the footpegs..

http://www.imagestation.com/picture/sraid105/p0ee592ba779176d4236b2f89f124f4b8/f97b4215.jpg http://www.imagestation.com/picture/sraid105/p2ced9b739b7b1f21576779f0174dc2c7/f97b420c.jpg

[stonerider250x]

Originally posted by outacontrol31
I had a 308ex that i raced hard for a year, during that time both sides of the swingarm bolthole on the frame cracked and the nut side completly broke out so watch for that, also the back shock mount area is weak i just had to ordor a frame cause i destroyed it but then agian i race hard motorcross and its tuff on frames so if you dont mx you could be okay

my frame cracked on the peice that the top of the shock mounts on also...mine only cracked on the left side though

[MX174]

this probably sounds stupid but what is gussett?

[roostin_dale]

Originally posted by MX174
this probably sounds stupid but what is gussett?

A reinforcement welded onto the frame at its weak-points...

[Aceman]

Good post roostin, I just found a crack through half the frame rail right in front of the left footpeg mount. I was wondering how you would gusset that but now I know.:p