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  #1841  
Old 07-29-2011, 12:00 AM
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Default Re: what did you do to your motor bike today?

There is a good reason to seal your clutch cover - it keeps the pressure balanced against the engine seal.
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  #1842  
Old 07-29-2011, 12:36 AM
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Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by MarkSumpter View Post
Put it on a flat surface and dress it with medium grit paper... No need to seal clutch cover...
Or file it carefully if you have a large file. It's not important to have a perfect seal on the clutch cover. There's nothing in there to leak out.
I've contemplated cutting fancy patterned vent slots in mine, sorta like they do with some of the Ducati's that have a dry clutch.
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  #1843  
Old 07-29-2011, 12:39 AM
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Default Re: what did you do to your motor bike today?

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Originally Posted by DuctTapedGoat View Post
There is a good reason to seal your clutch cover - it keeps the pressure balanced against the engine seal.
Never thought of that. Those cheap seals need all the help they can get!!
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  #1844  
Old 07-29-2011, 12:51 AM
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Default Re: what did you do to your motor bike today?

I got in 3 or 4 miles in a couple short hops, today. Tried out the front rim with a wider tire and it did give me a little better cush. I'll switch out the back within a few days.
Engine was really straggling the first trip out and I ended up pedaling more than I wanted to... Took off the cns when I got back home and put on the nt from the other kit that's never been assembled. Night and day!
For one thing, the float valve works, and I like the lever choke far better than the cable connected plunger-thingy-do-dad. AND, it got one cable off my handlebars! Bonus!!!
I don't think the plunger was seating properly. Now that I've taken it apart, again, I can see where it has a bit of rubber on the bottom of it. I don't think it was sealing well, even with the spring pressure pushing down on it.

I wish the nt had a idle speed mixture control, but doesn't seem it needs one...

Brakes functioning on rear AND front is like night and day! Whew!
I will learn my lesson and never, ever, go out under power with only one brake again! MOF, you couldn't sell me a coaster brake on a motorized bicycle on a bet!
I'm gonna look for disks, next!

Really wish the mtb had more trail in the front end...

Been rooting through my collection for a small toolbag and figgerin what all should be in it . ...in addition to the leatherman Dan advised !

Gosh I like WayneZ's friction Predator!
rc
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  #1845  
Old 07-29-2011, 06:01 AM
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Default Re: what did you do to your motor bike today?

today I fond out why I was having problems with my higher end rev range and I think I may get some more useful information. it looks as though the exhaust gasket on my little 66's Skyhawks slant head got a bit loose.

It started out me losing the high and power and torque that I was used to getting out of this kit it's a slanted 66 cc Skyhawk. I do run a modified sick bike parts expansion chamber and it has served me quite well through three engines. I had to lengthen the rear part of the pipe so it would fit more easily being next to the crake. In doing so I had to lengthen other sections so that the pipe would remain "tuned". I believe I have found the reason for all of the dark oily material that winds up on my motor. It looks like the new bolts that are holding the exhaust pipe on in their aluminum gasket in place have rattled loose. I usually use two sets of nuts on each one of those bolts and it turned out that the outside nuts were still tight but the inside ones had loosened. This caused black oily used to be dumped all over the front of my engine.

The reason I even notice to all was because I wasn't getting the power I was used to getting out of it so I disassembled the pipe completely taking off the manifold and cutting less than half inch from it. I was hoping that this "tuning" will get me some more top end for the engine. This is easily accomplished because there's already a joint into the tubes with a rubber seal has clamps on either tube. So I just pulled apart l cut end of the tube off as much as I need to balance the power band were it will do more good and then hop on it and give it a ride to see if it made any difference. Unfortunately when I reassembled it I used blue lock-tight on all of my hardware and I have to wait until tomorrow until I see if it made any good.

Hopefully the lock tight will be doing its job and the manifold wont start leaking spent oil and burnt hydrocarbons all over the front of my engine. like it did in the past few days.

mike
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  #1846  
Old 07-29-2011, 11:20 AM
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Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by DuctTapedGoat View Post
There is a good reason to seal your clutch cover - it keeps the pressure balanced against the engine seal.
Please enlighten me how a cover equalizes pressure on the seal as the sealing action of crank seals primarily from crankcase pressure inflating the inner wall slightly expanding the ribbed surface to seal on the crank.I don't think there is enough internal pressure in the clutch compartment to affect the seal at all. The only reason there is a gasket on either the clutch cover or mag is keep out water which is detrimental to both.

Last edited by MarkSumpter; 07-29-2011 at 11:25 AM.
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  #1847  
Old 07-29-2011, 11:36 AM
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Default Re: what did you do to your motor bike today?

Still trying to get the bolt out of my broken center stand. On the bottom, was enough bolt out to grind a slot for a screw driver. Immediately parted it half off. LOL. So drilled a hole in the other side and quickly broke off my handy-dandy HF screw extractor. So tried to drill it our and the extractor is harder then the bits I have. Is just dang funny how annoying this cheap Chinise bolt is messing with me. Then noticed, the legs of the stand part are spreading. I couldn't figure out how my springer forks were growing.

I need a nap and or a beer.....
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  #1848  
Old 07-29-2011, 11:43 AM
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Default Re: what did you do to your motor bike today?

Hardened extractors almost have to be burned out Dan. Try torching around the mount (not the bolt itself) to expand the metal of the stand and threads once you have a way to grip and turn the bolt. I hate cheap extractors they always break on me it seems.
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  #1849  
Old 07-29-2011, 11:57 AM
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Default Re: what did you do to your motor bike today?

With a perfect size sharpened punch a brittle hardened bolt extractor can be broken out crumb by crumb piece by piece. Takes an amazing amount of patience tho. I got in a manifold on a turbo once that took me all day on a front wheel drive car with no room to work a hammer. I broke a nice tiny snap on drill bit in one of the broken bolts prepping for the extractor.


Note a cheap Chinese metallurgy type punch not recommended lol.
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Last edited by Goat Herder; 07-29-2011 at 12:00 PM.
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  #1850  
Old 07-29-2011, 12:38 PM
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Default Re: what did you do to your motor bike today?

Cool Mark, thank you.

Hey, I will start a thread but would like to ask for your thoughts (and every one's) I would like to design a rear, center kick stand. HD for our heaver bikes but that could be made with simple tools. I have a pretty good idea on how to go about what I would like but have a drill press and mill. But thinking with some thought, could be done with a drill and some hardware parts. Actually, would be a cool thread to do with every thing that can be DIY'ed parts. To make wide frame adapters, I have a piece of cardboard with 3 bolts hanging from it. Ya put the middle bolt on the opposite side of a piece of flat stock in a vise and makes a perfect half moon shape. A thread on stuff like that for folks who like the DIY thing or folks on a tight budget. (lol, ya know, all of us)

I really enjoy the group effort thing when designing. Is a lot of fun and with this stuff, always ends up working out well.

I think most every thing DIY is here some where and findable, but be cool to have a central thread for that sort of thing.

http://motorbicycling.com/f36/diy-pa...tml#post311210


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