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 11CAB
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| posted on July 20th, 2008 at 06:31 PM |
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Single Side Plate Gearbox
Curious as to what a Single Side Plate IRS gearbox is worth?
65 Meyers Manx
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rose
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| posted on July 20th, 2008 at 06:33 PM |
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$
I picked up a used one a few months ago and i think it cost about $250. If your selling a good one I'll have it.
[img][/img]
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Kuchster
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| posted on July 20th, 2008 at 08:39 PM |
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I got a few double side plate gearboxes if you need one.
Not much difference except for top gear rpm i believe about 500rpm differece to single side plate box.
Kuch
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11CAB
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| posted on July 20th, 2008 at 08:51 PM |
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I've got a couple of Single Side Plate boxes that I dont need, just wondering what they'd be worth.
Might stick them on Ebay
Thanks
65 Meyers Manx
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on July 21st, 2008 at 08:59 AM |
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Top gear ratio was changed LOWER with the 3.875 diff from 0.889 or 0.883 to 0.931.
This means that going from the later DSC 4.125 with 0.883 to a SSC 3.875 with 0.931 is
...30 rpm less...yep thirty, thats it.
Most of the later SSC trannys had a soft reverse gear also, so that is a negative to them.
To me the only positive is the stronger crown wheel and pinion.
But only if it has the Gleason version.
Some have the Klingelnberg tooth shape that is much smaller in tooth size.
Ebay is probably the best place to get a good price for them.
I actually prefer the 4.125 ratio boxes, even for race applications.
With a change in fouth gear to a 1600 bus 0.821 , you can have a real 'freeway flier' to quote annoying US sales hype.
| Quote: | Originally
posted by westi
That's mad Alan.
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HGFS
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| posted on July 31st, 2008 at 02:12 PM |
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| Quote: | Originally
posted by dangerous
I actually prefer the 4.125 ratio boxes, even for race applications.
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Hi Dave,
I've heard this before too, just wondering if you can share what would be the pick of the bunch to use a 4.125 for a 1/4 or 1/8 mile car with zero
street use.
Does any particular box have about the right gear stack without changing too much. Not talking about a top level racer of course.
Cheers
1954 Oval long term project going nowhere
1958 Beetle drag car project
1959 Beetle project I need to sell one day
1969 Squareback
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dangerous
A.k.a.: Dave Butler Muffin Man
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| posted on July 31st, 2008 at 07:42 PM |
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As far as 'pick of the bunch' crownwheel and pinion, the "O" 4.125 is the best, but very unusual.
I have only ever seen two,
and one was keyed on the end,
and one was splined. (where 4th gear fits)
I am not sure what they were used on here in Australia, but the late splined one apparently came in "things" in the USA.
Hard to say which transmission core is the best to begin with,
because they all have their ups and down with regard to various features,
If the poor old trannys were not so old and had no wear,
the early swinaxle type 3 would probably be one of the best.
The 1500 beetle was not bad either,
but by then they had began using a bronze fork for 1st and 2nd, and finer tooth 3rd and 4th gears in some cases.
Although these things are normally replaced when doing a rebuild or hot up box.
Later boxes had better things and they went back to a steel fork,
but still used fine tooth gears for third and 4th,
and a really crappy soft reverse gear.
But post 1973 they had stronger first gears and furnace brazed hubs on 3rd and 4th.
Picking the right core is a tough call depending on what you have as far as swingaxle or IRS,
and ratios are not much good unless you plan to run through in third gear.
If you can find a post 1973 1300 swingaxle tranny, that is a very good base to start from.
It will have a 4.375 diff ratio that is still surprisingly strong(pagey ran well into the 11's with one in the yellow car),
but best of all it has
steel forks,
strong first gear,
furnace brazed third and 4th,
and much stronger 10/15 tooth differential gears.
It may also come with the lower ratio 0.931 fourth gear(stock is normally 0.883 or 0.889).
For IRS, the latest DC code type 3 boxes had 4.125 diff and all the strong parts
except for the soft reverse gear and ine tooth 3rd and 4th gears.
Good thing about the post 1973 boxes is that you can upgrade to coarse tooth 1800 bus gears in 3rd and 4th.
| Quote: | Originally
posted by westi
That's mad Alan.
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Gibbo
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| posted on July 31st, 2008 at 10:27 PM |
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So If im building a tasty engine for an oval but not using IRS is a single side the best to get over a double side?
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11CAB
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| posted on July 31st, 2008 at 10:53 PM |
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You cant get a single side plate swingaxle
65 Meyers Manx
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Gibbo
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| posted on July 31st, 2008 at 10:56 PM |
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But you can fit a single side IRS to a swingaxle setup, I spose that what Im asking. Ive always seen people go for the single side over anything else
over the years.
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11CAB
Compulsive Aussie Vee Dubber
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| posted on July 31st, 2008 at 11:04 PM |
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| Quote: | Originally
posted by Gibbo
But you can fit a single side IRS to a swingaxle setup
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No
65 Meyers Manx
68 Country Buggy (KO 367)
68 Country Buggy (KO 669)
68 Country Buggy (KO 789)
68 Country Buggy (KO 815)
68 Baja Bug
76 Baja Kombi Twincab
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