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Post by lincolntbird on Jan 13, 2013 7:58:57 GMT -4
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Post by justyfied on Jan 14, 2013 17:05:33 GMT -4
What the Heck is that, what kind of V4 engine? looks like maybe off a bike cause of those 2 things sticking out to the right! What kind of power? Does it have a trans? how good is the clutch?
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Post by lincolntbird on Jan 15, 2013 9:31:59 GMT -4
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Post by lincolntbird on Jan 15, 2013 9:37:08 GMT -4
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Post by justyfied on Jan 15, 2013 13:19:39 GMT -4
Thanks for the other pictures, something told me this was not your average deal.. ..
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Post by justyfied on Jan 22, 2013 19:02:01 GMT -4
Bored today so I felt I should share some ideas for having a Motorcycle engine fitted to a Small car like the Sherpa. Here is a pic of 1 possible way to have a motorcycle engine drive the front wheels. There are several problems with this; There is no reverse You are limited with space to have different size sprockets to adjust the gear ratios. The engine has limited space in the shallow but relatively wide engine bay. The open diff carrier used to make the drive for the sprocket is not lubricated and is open to dirt, rocks and little squirrels getting caught in it! Here is another picture of a diff carrier with a sprocket mounted, notice how it bolted on the back side of the carrier, opposite to where the ring was mounted. So I was looking at the Rear differential housing from a 4WD Justy which of course is pretty small and light, It has a flat face drive flange which is easier to bolt a sprocket too. So what if the rear diff was mounted up front as a front diff, then with a sprocket you could run the drive chain from a another shaft mounted front to back closer to the left side frame rail. You would have 2 chains driving from and to a total of 4 sprockets. 1 on the output of the bike engine, the one it drives on the mid shaft, the one on the other end of this shaft which would drive the sprocket on the diff housing. Then if you used a large Water cooled V-twin (notice I didn't say Harley Davidson !) It could sit sideways in the engine compartment closer to the right side. This should make for more room for everything all around. Then if you want to get REALLY fancy, you could source a small planetary gear setup such as this one that was used as an over drive on the back of a transmission. Put this planetary on the middle shaft and you would have a dual range trans with a REVERSE! These Laycock Overdrives were fairly popular with British Makes and even Volvo. www.brakeandfrontend.com/issue/article.aspx?contentid=38839Perhaps one of these could be adapted to work as a reverse as well as an Overdrive.
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Post by lincolntbird on Jan 27, 2013 10:25:02 GMT -4
How about an eletric reverse. I believe it has been done on some of the big tourer road bikes. Not rure how one would get reverse form an overdrive unit. I may be missing something, because I haven't had anything much to do with these units. What are the dimesions of the 4wd Justy rear diff & how readily avaliable? I like that idea.
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Post by justyfied on Jan 27, 2013 12:46:51 GMT -4
How about an electric reverse. I believe it has been done on some of the big tourer road bikes. Not sure how one would get reverse form an overdrive unit. I may be missing something, because I haven't had anything much to do with these units. What are the dimensions of the 4wd Justy rear diff & how readily available? I like that idea. Not sure what that is( Electric- rev. ) Got a picture of that, what did they come on? I picked an overdrive because it was the smallest self contained, as in enclosed in a case for lubrication requirements, Planetary gearset. A planetary gearset is what you will find in just about any Automatic transmission. Only they are now much more complicated, as being compound with multiple planet gears and stuff. All we need is reverse which a basic planetary set provides. by Holding the carrier of the planet gears in the center still, the outer ring gear turns in the opposite direction of the center planet gear. You can get a nice overdrive by holding a different part which is what the overdrive box does. There would have to be some switchable modification done to that overdrive unit to enable it to provide a reverse. Might be doable , maybe more difficult than it is worth. Maybe trying to source a small simple single speed Automatic trans will already have everything set up with an external switchable linkage. Anyway here is a nice animated show of how the planetary works on the second page of this link. Just click on the bottom button beside the animation window to show how the reverse is accomplished. auto.howstuffworks.com/automatic-transmission2.htmI will have to get back to you on the Justy rear carrier housing. As far as availiblity, In North America the ones that came in the ECVT equiped Justy have a different ratio than the Std. This means that everyone that wants to switch from an ECVT to a standard now has a surplus rear carrier! ;D
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Post by lincolntbird on Jan 28, 2013 9:58:41 GMT -4
Some of the latter Honda Goldwings come with an electric assist reverse, not sure on set up. Here is a link to an electric reverse kit which uses a starter motor as the drive unit. www.californiasidecar.com/downloads/Electric_Reverse_with_kit.pdfI think I have found the engine for the Sherpa.... a Moto Guzzi V twin :-) ;-) Not sure how well the Guzzi engine would fit. With there layout & transmission perhaps one could put a Justy 4wd rear under & make the Sherpa rear wheel drive, as the Guzzi is shaft drive. I did have an understanding of planetary set ups, just wasn't sure how you was getting reverse. Now that I have had a look at the animation I can see how that may work.
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Post by lincolntbird on Jan 29, 2013 8:26:07 GMT -4
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Post by justyfied on Jan 29, 2013 11:57:08 GMT -4
That trike makes for a nice looking modern take on the old Morgan I think it was. If you are gonna rock 3 wheels the best way to have it is with the pair of side by wheels up front. Much better layout, better cornering ability and thus- safety. I still think that a Water cooled engine makes more sense though. not sure how much cooling there is for an air cooled engine hidden away inside an engine compartment of a car. If we are just bench gabbing here and price is no object, how about a V-4 engine that we could mount facing front to back, have a trans-axle with the flywheel in the back and the drive-shaft connecting the engine to its flywheel/starter in the back. that would get the polar moment low and out at either end of the car. That is what you want for a short wheelbase light little car. This engine makes 185 horse power and uses regular multipoint fuel injection. Just begging for an even raunchier cam and even a turbo .. .. M M MMM. Listen to it in the video and read all of the comments: thekneeslider.com/is-the-motus-v4-baby-block-crate-engine-the-future-of-old-school-hot-rodding/
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Post by lincolntbird on Jan 30, 2013 10:09:23 GMT -4
Great minds think alike. I was thinking of the rear mount trans axle - engine set up myself. ;D That is one very sweet looking & sounding V4 . Yes it is a bit of a bench session really, but you have to have something to keep the old gray cells active & have something to dream about . Finding a Guzzi engine over here probably would be a little difficult, never mind not cheep.
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Post by lincolntbird on Feb 25, 2013 8:56:38 GMT -4
May have found a live rear diff to put under the Sherpa if I want to go with a rear wheel drive conversion. Not sure on the diffs origins, but a quick measure up shows it to be close to the correct width. It is a leaf sprung diff on 10inch wheels. Will investigate further when time permits.
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Post by justyfied on Feb 25, 2013 10:52:14 GMT -4
10 inch wheels The only thing I have ever heard that came with those are the old original Mini. A solid axle rear diff with springs would be great but, I would love to know more about what it is from, is there any tags on the bolts holding in the carrier or rear cover? pics ??
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Post by lincolntbird on Feb 25, 2013 11:18:57 GMT -4
Will try to get some more info soon.
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