All things mtb

[Ranger]

I hope that my engine doesnt shake apart. I built a nice strudy mounting bracket that is a 1 peice that attaches to the 4 bolt holes. I'm going to make the shaft longer then weld a bolt on the end so I can put a pipe nipple on there.

I will see if I can get some picture and put it on my post today or tomorrow.

 

[deacon]

Sounds like you have a good plan. I would worry a little about welding onto the drive shaft but otherwise it sounds good.

Instead of that I would drill a hole in the center of the pipe cap and then weld a nut on the outside of it. Screw the end cap onto the drive shaft then screw the pipe nipple into the end cap. I have that arrangement on the chainsaw bike and it doesn't have any vibration so far.

The hole in the end cap is to give the driveshaft somewhere to go when you tighten the welded on nut down. The nut has to be dead center of the end cap but that shouldn't be very hard to do.

 

[Unsolved Rubix]

Ok, I haven't been here in a few weeks...but I love the canteen idea.

 

[deacon]

See what you miss when you don't hang out with the sickos...

 

[Unsolved Rubix]

Yea, I have spent time trying to find a new motor....and failing everywhere. It is like no one here gets rid of there old weed eaters or chainsaws....I am completely hosed.

 

[Ranger]

E-bay has the motors cheap. Most of them are fairly new and in good condition.

Or go to a friends house that has some old ones, that what I did

 

[Unsolved Rubix]

Well, i have like no money so Ebay is out of the question.


And none of my friends have a weed eater or chain saw.

 

[Ranger]

About $30 is all you need

Look at these auctions
22cc Weed Eater MOTOR ENGINE Dolmar MS-22 C - eBay (item 320285308099 end time Aug-17-08 13:28:46 PDT)

RYOBI 700R STRING TRIMMER,WEED EATER ENGINE R/C - eBay (item 180275967779 end time Aug-17-08 18:24:56 PDT)

The second one Needs a little TLC but it runs.

 

[Unsolved Rubix]

I don't even have 30 dollars right now and no other mode of transportation.

 

[Ranger]

WELL, your screwed

 

[Unsolved Rubix]

haha, I know. My truck crapped out a while ago. So I have a motorized bicycle that is worthless after a mile haha

 

[Ranger]

Why is it worthless after a mile? Overheating?

 

[Unsolved Rubix]

whenever it gets to operation temp, It loses all compression and there is no power. It only stays going then because I am pedaling. That is what I get for using an old 21cc

 

[Ranger]

I dont know how to fix that, maybe keeping it below "operating temp" with water cooling.

 

[jasonh]

Need to choke it when it's warm? Choke stuck on and doesn't need it when it's warm? How's the plug look?

 

[Unsolved Rubix]

No it doesn't matter what the choke and such is on. It reacts the same way no matter what. I have yet to completely tear it down but I am pretty sure the piston ring is warped and that would explain why it loses pressure when everyting warms up.

 

[deacon]

Yoiu did make sure that you dont have too much tension. that used to drag mine down/.

 

[Ranger]

He has a LOSS OF COMPRESSION. I dont think that any outside factor would cause this, it had to happen inside the engine somehow.

 

[Unsolved Rubix]

Yes I am positive it isnt too much tension.


I am putting heavy money it is the piston ring and the piston are worn.

 

[deacon]

Yes I am positive it isnt too much tension.


I am putting heavy money it is the piston ring and the piston are worn.

Probably right. I think I'm going to concentrate on one engine and collect a few for parts.