failure

went out and logged 60 miles around indianapolis Sunday. Great time, went riding with a scooter group. Up until the last 1.5 miles tho lol. Looks as if i had a valve fail, the keepers and locks were still in place, but teh valve head on the intake broke off. Junked my ported race head :(, i was...

Hi, I'm new on this forum. Im currently working on a project trying to increase the horsepower on a old mini bike engine (Briggs 3hp) without using any aftermarket parts. I did a lot of work to get more power and rpm. Now I want to increase to tolerances of the internals. The stock...

this was a 38 special loaded with a 148gr hollow base wadcutter on top of a few grains of solo 1000. it has been my standard plinking round for all my revolvers and 357 mag rifles for years. the front of the wadcutter blew off leaving the base in the shell. lead is smeared all over the face...

I had an unexpected failure this weekend. I was riding my Tri-Sport (TS with 8HP engine) and hit a couple of gopher mounds hidden under the light snow and then snap! I thought the chain had broken, but when I looked, the jackshaft sprocket was gone! I picked around in the snow where the snap...

A while back i mounted a motor / bicycle brake on the rear of my Western flyer hoping the brake pad would hold up and allow me to stop and even though the band was about a 1/2 inch wide i never expected this. amazingly i have been ride over six months the pad held up and had little wear. the...

hello i am looking for a set of forks for a 1970-1972 rupp roadster, probably going to need more parts in near future thanks

A friend of mine was riding my Dirt Bug with a modded Predator, not pushing it too hard (4600 rpm) when the was a pop then it locked up and had no compression. After tearing it down, the culprit was the intake valve had failed. Beware of this issue, i was running stock valves with 18lb springs...

I guess probably not, but anyone have experience replacing 97cc crankshaft oil seals? Finally had a failure on 97cc. Flywheel oil seal let go, funny sound and leaks oil. Found a couple of places to buy OEM seals, but would like to get a little better oil seal. I think the OEM crank seal...

My dad is dying from it right now and it's hahahahaing brutal (he'll probably pass tonight or sometime tomorrow, been mostly unresponsive since earlier today). If you ever get diagnosed with it, kill yourself before it gets really bad. I thought watching my mom die from cancer (all through her...

I am interested in knowing how long you fellow mini bikers feel these mini motors should last. Kind of a general idea for a non modified motor. This could be relayed in terms of; hours,miles,or years of use. Whichever you choose to use. I am just curious as to what would be considered...

Is the first step to lerning what your doing..... I decided to show everyone some of my failures this week... Im working lerning and just as happy with my failures as my success..... There is something verry important to me about these pics...... if you do not get it well.....

I keep hearing that the factory engine is a piece of junk. My son rides his mini almost everyday along with all the other kids in the neighborhood. He's 14 and loves it. Alot of the kids have dirt bikes and 4 wheelers; us too, but everyone likes to ride the doodlebug. We are getting some...

i took my trisport with us dirtbiking and it was running great all day,drove over some rough terrain and the carb body cracked.its 30 yrs old but never seen this before. does anyone know of a replacement carb i can bolt rite on?the old carb is a tillotson hr 64a and the engine is a ccw 340cc 2...