Motor, spojka, and related componentsV700, V7 Special, Ambassador

8 dubna 2015 | Autor: | Komentáře Off na Motor, spojka, and related componentsV700, V7 Special, Ambassador
Moto Guzzi 850 T 4

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, 850 California Police Motor, spojka, and related components

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Brackets to mount a Tonti timing cover in a loop frame

Question from Gregory Bender:

It is my understanding that the Tonti alternator cover will hit the front fender upon full fork compression? I don’t have any direct experience with this, nicméně, so I may be recalling incorrect information, atd. Can you shed some light on this?

My understanding is, if you do nothing, the fender (or perhaps more accurately the fender brace) will hit the cover. Once again I’ve been told that all that is necessary is to rotate the lower front fender mount downward. This would require drilling 2 new holes, and leave 2 holes to be plugged, so a purist might not want to do it, but then a purist wouldn’t be mounting a tonti motor in a loop frame anyway.

Now if you look at a California II front fender (granted tonti frame), they have a flat spot hammered into the fender, I hope that isn’t necessary as mine is chromed and might flake.

Other issue. I have heard of folks using a welded spool onto the loop frame to do what I have done with my links. While I was jigging all this up, I put a tonti drive train in my loop frame, and installed only the rear trans mount and battery tray. I supported the front of the motor with a jack.

I figured I’d use the alignment of the fins with the lower rail (from the rear of the oil pan forward up to the 3rd oil pan bolt they are parallel nicely), to get the output shaft alignment correct. I wasn’t happy with that method, and I wish I had paid attention to the original output shaft alignment relative to the swing arm pivot, but never did.

I figure to minimize stress on the u-joint, the output shaft of the trans should point directly dead center to the swing arm pivot (I mean centerline to centerline). Achieving this alignment, I realized that the front tonti motor mount hole did not align with the crotch in the loop frame (this crotch is formed when the factory welds the front motor mount onto the loop). Now to bring this story full circle and make a long story longer, back to the spool weld jobs.

If the anecdotal evidence on fender clearance is based on folks using the welded spool method, their clearance might be different than mine. because I believe my motor mount bolt is lower than theirs. whew.

Now if I wasn’t so lazy I get a tonti drivetrain back into the frame now that I have my links, but I’m waiting till I have the motor and trans done, so I hopefully only have to do it once.

Moto Guzzi 850 T 4

I invested $155 in my links, that included shortening and rethreading the front motor mount bolt (actually not a bolt, has a nut on each end). I’d be thrilled if someone would key up my plans (in the photo section) with the emachineshop.com cad software, so we could get an independent quote on these, because if I blew the dimensions, I’m looking at shelling out at least another $140.

Finally got my convert motor and trans done and bolted together. Got them up into the loop frame tonight, and finally got to check out how my new front motor hanger brackets did as far as output shaft alignment. I’m pleased to report that it looks great.

The first shot show the alignment. the convert output shaft is hollow and threaded. I screwed a long bolt into it, and the picture shows how the output shaft axis is co-planer with the swing arm pivot axis (the bolt exactly splits the pivot pin holes). this is key to minimize stress on the u-joint.

Output shaft alignment: I threaded a long bolt into the convert output shaft. You can see it aims dead center to the swing arm pivot.

Photo courtesy of Mike Tiberio.

Output shaft alignment: I threaded a long bolt into the convert output shaft. You can see it aims dead center to the swing arm pivot.

Photo courtesy of Mike Tiberio.


Moto Guzzi 850 T 4

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