Razor MX 500 elec. to 5hp gas conversion

[tykenfitz]

Ordered all the parts except for the pillow blocks, lol, I gotta sell some stuff and get some money in the ebay account

 

[mike75925]

uh oh!

 

[tykenfitz]

Think they got 'em at Home Depot or the like?

 

[mike75925]

don't know, never looked. but i have seen garage doors use pillow blocks, so i would guess yes they do.

 

[tykenfitz]

If I order a pulley that says its 1 3/4" diameter do they mean measurement A or B (above)?

 

[mike75925]

idk, there should be a guide posted on the sites that sell pulleys. i always thought that dia meant A

 

[tykenfitz]

do you think there'd be a problem with one of these pulleys? It says they're rated for fractional horepower

 

[freakboy]

i wouldnt trust em and id go with a bigger pully then that so the belt has more surface area. just so it dont slipp to much

 

[tykenfitz]

package came today, but they dont have the pulley any more. gotta go to the store and look for a throttle spring, pulley, pillow blocks

 

[mike75925]

sucks, did you find out how to read pulley dimensions? was it the biggest diameter they reference when they say a certain size?

 

[tykenfitz]

naw just got back from ace pissed cuz they didnt have any thing, overcharged me, and the bolts didnt fit! goin back tomorrow to return everything and gonna get it at home depot

also the sprocket doesn't bolt on right so I'm gonna bolt the old sprocke on then drill holes in it that fit the new one so it's like a kind of adapter plate

 

[tykenfitz]

how am I supposed to put this sprocket on the jackshaft? It's got a slot it in with a setkey that goes through there and there's another set key on the side. My problem is that my key stock wont fit in the slot in the sprocket are you supposed to use key stock there or just screw in the set key really far?

 

[mike75925]

what kind of sprocket? the jackshaft sprockets are normally made with the key in place. got a pic available? there should be 2 set screws, one key. pic of shaft, sprocket, and key. preferably a shot of the shaft's keyway, the sprockets key. it should slip on like a cent clutch. are the set screws backed out enough to allow the shaft to slide into place?

 

[tykenfitz]

Update video, explains my sprocket dilemma:
http://www.youtube.com/watch?v=D_7IDhlmh40

Also, how can I get the hole in the middle bigger? I've been going at it with a dremel and grinding attachment but it's not really working, I've got the right size hole saw but unless I can use a drill press, there will be no way to drill the hole right.

 

[mike75925]

are you going to keep the old sprocket bolted to the new one? i would flip the old one rebolt, and trace the diameter of the old onto the new. unbolt and remove excess material from new. die grinding is about your best option. do you have an actual die grinder that runs on air? the dremel just doesn't have enough power to do it very quickly. if you have a spindle sander with like 40 grit, i would say try that. how much smaller is the new one's hole? will the key stock fit in the js sprocket? you may have to put a piece in the js, mark the edge of the shaft, and grind the key to fit your sprocket. the dremel will work for this. i used one of the cheesy cutting disc to do my fly's key. took ~3 mins. bump start will get old quick with that kind of compression. good luck finding a hard enough surface to get traction on. odd question, are you a lefty? i've never seen a bike with the throttle on the left side. a cheap twist throttle can be had from one of those mountain bikes that have the twist grip shifters. remove the ball stop, or leave it on for cruise control!

 

[tykenfitz]

are you going to keep the old sprocket bolted to the new one?

no I'm just using it for dimensions

die grinding is about your best option. do you have an actual die grinder that runs on air?

nope, no die grinder, anyother way?

how much smaller is the new one's hole?

about 1/8" which is more than it seems when you try to dremel it away

will the key stock fit in the js sprocket?

no, i'll do the grinding thing you suggested.

good luck finding a hard enough surface to get traction on

um, asphalt?

are you a lefty? i've never seen a bike with the throttle on the left side.

no but the left one is for the rear brake which isn't on it so i used it. When I get a twist throttle, i'll hook up the rear brake again.

 

[mike75925]

on regular bikes, trying to push start is a fiasco unless you have a good hill or put it in top gear. it may work just fine, idk. let me know how it goes. as to the dremel, is the utensil you 're using sharp? i bought one of the cheaper attachment kits, it had diamond grinders.

 

[tykenfitz]

on regular bikes, trying to push start is a fiasco unless you have a good hill or put it in top gear. it may work just fine, idk. let me know how it goes. as to the dremel, is the utensil you 're using sharp? i bought one of the cheaper attachment kits, it had diamond grinders.

No it's absolute crap, more of grinding bit is grinding off than the sprocket.

And, oh boy, do I have a good hill

 

[mike75925]

schiesty. yeah, i hope you live at the top of the hill, or have a dolly made up to keep the rear wheel off the ground while you puch it up there. granted, she ain't 500lbs, but you'd still get tired of pushing her with or without a clutch.

 

[tykenfitz]

Also, I have the governor by passed currently, is there a need to remove it? I'd actually like to have it installed and working but IDK how because I tossed the old throttle linkage.