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Post by randall on Jan 5, 2013 6:08:17 GMT -6
Sea foam is pale oil, naphtha, isopropyl alcohol and water. It's mostly oil I think, so overuse or overdosing the fuel might, at worst, foul your spark plug a bit. As it washes down your cylinder walls, it also breaks up carbon deposits on your compression rings. Some of those deposits are beneficial to maintaining good compression. So overdosing may not be wise. The benefits are top cylinder lubrication and fuel drying/stabilizing. If you know the fuel you're buying is poor quality, then the safe bet is to use the smallest amount per tank that keeps your bike running well. Alternatively, check pure-gas.org/ for a list of stations in your area that sell non-ethanol fuel. that's made more difference in our bikes than any additive can, ie why band aid a problem when you can just eliminate it. |
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Post by randall on Jan 3, 2013 9:51:17 GMT -6
Haven't had a chance to test drive yet, but it's showing better signs on the center stand than it did. I noticed the pic you posted showed a sheave with 5 slots. Mine only has 3. I think when I eventually go clutch shopping I'll see if I can find one that has more spiral slots/pins. Better distribution of the load. You can see how mines worn. Doesn't show well in the pic, but there were a couple of worn depressions in the slot near its low speed end. Anyway, after filing those out and greasing it up with fresh amzoil, it's operation, by hand, feels very significantly smoother. Fingers crossed. Can't ride today, but maybe tomorrow..... Attachments:
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Post by randall on Jan 3, 2013 5:46:28 GMT -6
And when spray fuel directly in the intake manifold the bike starts up with no problem. I tried cleaning the Carb but no use. When you cleaned the carb, did you remove the low speed idle jet and actually look through it to see a pinhole of light? That tiny passage must be clear or your engine won't start. Good idea , but don't use starter fluid . Use carb cleaner spray . Not sure what carb cleaner you use, but Gumout doesn't combust nearly as well as gasoline, and nowhere near as well as starting fluid. |
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Post by randall on Jan 2, 2013 16:35:28 GMT -6
Yeah Alley, this might be it. Not well greased at all, might have got some water ingress too. Also some uneven wear in the pin races. I'm going to file that a bit smoother, grease it all properly and reassemble. If that doesn't work I may just replace this whole clutch thing.
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Post by randall on Jan 2, 2013 14:29:34 GMT -6
Here is the sheave notice the curvature on the slots they maybe all dryed up and need a little grease on the pins that slide in the slots. Alleyoop  Thanks Alley. I'll give that a look. Makes sense that it might give the symptoms I'm having. |
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Post by randall on Jan 1, 2013 14:56:31 GMT -6
Nope. Been all over the motor. Definitely not the problem. Rode with a precision tach hooked up too. Steady as a rock.
I've got a strobe tach here too. Might pull the tranny cover and maybe I'll be able to see something.
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Post by randall on Jan 1, 2013 13:47:39 GMT -6
Could be a clogged low speed jet. Just throwing out my .02 dollars. Have you tried starting it while spraying starting fluid into the carb throat?
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Post by randall on Jan 1, 2013 13:33:03 GMT -6
I've been getting my Diamo, 150 Gy6, ready to put into service and have finished dialing in the engine. Running great, quiet purr, perfect for this kind of bike. Anyway, with that done I've been turning my attention to the transmission. Here's what I'm experiencing.
When traveling at a constant speed on a smooth flat road, there is an occasional power stumble. Its subtle, only lasts for a quarter second or less, but it's noticeable. It's obvious that the motor is not missing a beat when this happens. It repeats intermittently but seems to occur more frequently when A. Accelerating up a slight hill, B. when hitting small bumps, and C. At midrange speeds between 25 and 35 mph, and only sometimes when taking off from a light.
With the bike stationary on the center stand, throttling it up to those speeds, it can also occur. The whole drivetrain bounces up a little when it occurs. The bike is quite drivable. As I say, it's very subtle.
Interestingly, it does not occur under heavy acceleration!
Here's what I've done....
Disassembled the variator, cleaned and inspected thoroughly, no flat spots on the rollers, ramps look good. I deglazed the pulley faces with sandpaper, greased the little posts, shaft, etc.
Pulled the clutch pulley bell, deglazed the shoes and bell, didn't disassemble the clutch though. Pads looked good, nice and thick. Did a little deglazing of the clutch pulley, reassembled everything and put on a brand new gates belt, even though the old one looked perfectly fine. Took out all that silly kick start stuff too. Hey, I got AAA!
The result? No change. Well, actually things seemed overall a little smoother, but the subtle stumble remains.
Logic is telling me it's in the clutch pulley. I'm leaning towards that big spring being weak or something. Any ideas?
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Post by randall on Dec 30, 2012 18:12:32 GMT -6
Thanks folks!
Yes, it is fun to ride. The windshield is really effective. On a 55f night, you don't have to bundle up much. You actually get more wind coming up from the road but that's not much. I thought that crosswinds would push it around more, but I'm finding they don't much. I think the spoiler effect of the windshield forces the front end heavier or something. Anyway, it's extremely well behaved in that regard and we've had some pretty windy days here recently. Also, it doesn't feel top heavy at all when riding it, but it sure does when you're parking it. You want to be sure you have a firm grip on it as you get off and put it on the center stand. Kickstand is presently useless, but I'll sort that soon along with a whole laundry list of other little things yet.
Got super lucky and found a new windshield wiper motor! The original was trashed. Worm gear was sheared off. I have to do some repairing to the arms still. Someone really abused them.
Haven't got the back speakers reinstalled yet as I didn't care much for how they looked. A little upholstery magic is on its way for those, so stay tuned. Those are the armrest looking things on the rear quarter panels.
Looking for some double latching stainless pull latches for the roof to windshield connection. Just haven't come across anything that will fit yet. The roof itself needs some cosmetic help too. The sun hasn't been kind to its surface. I'm thinking about just covering it with a navy blue sunbrella cloth. That would make it look even more "convertible" when the top is up.
I'll keep at it! It'll get there.....
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Post by randall on Dec 30, 2012 7:23:55 GMT -6
I've been keeping a blog of my Velux restoration project. You can check it out here: fader8.com/index.php?option=com_content&view=category&id=57:diamo-velux-rebuild&Itemid=180&layout=defaultStill a work in progress, but I am actually riding it now! Interestingly, about half the stuff I'm fixing is carelessness of the previous owner, and the other half is carelessness by whatever hack mechanic the previous owner hired to work on it! I guess that's par for the course with used scooters. Anyway, it was pretty well trashed when I got it, but now it's seeing a new life. For those not familiar with this bike, it was originally designed by the Italian firm Benelli, then licensed to Lon-V, then ended up as the Diamo Velux assembled by Zhejiang Lingyun in China using Lon-V bodywork with CFMoto and Vento mechanicals. So it's sort of an international mash up. Mine is the 150cc GY6 version, but I'd like to pick up one of the rarer 250cc water cooled models sometime, if I can find one. |
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Post by randall on Dec 18, 2012 4:47:39 GMT -6
Jr, that is an excellent Service manual for the 157QMJ motor let alone the Trike itself. Alleyoop Yes, quite good. Everything in that manual (except the rear axle stuff of course, since I don't have the trike version) is applicable to my bike. Thanks for posting it JR! I'll post the owners manual for your doc section when I get a chance too. I started blogging my Velux restoration project fader8.com/index.php?option=com_content&view=category&id=57:diamo-velux-rebuild&Itemid=180&layout=default for anyone with an interest in these things. |
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Post by randall on Dec 11, 2012 5:19:42 GMT -6
Cobalt Blue Metallic....... Attachments:
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Post by randall on Dec 11, 2012 5:13:52 GMT -6
And some visual reference helps, right? Attachments:
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Post by randall on Dec 11, 2012 4:52:14 GMT -6
Ah, pic attachment works from my iPhone but not from my iPad 1. Probably since my iPad has no camera. Here's the harness diagram. Attachments:
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Post by randall on Dec 10, 2012 20:50:10 GMT -6
Well, the owners manual is useless, I do have a harness diagram. Can't post it here at the moment as this board doesn't have pic upload for its iPad Proboards app. The admins must have that disabled. When I'm back at my workstation I'll attach it.
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