Velvet Drive 72c Possible upgrade hybrid ?
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=47378
Printed Date: April-27-2024 at 9:39pm
Topic: Velvet Drive 72c Possible upgrade hybrid ?
Posted By: uk1979
Subject: Velvet Drive 72c Possible upgrade hybrid ?
Date Posted: April-23-2019 at 4:58pm
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Have had this on my mind for some years now, so have picked up a 80’s Backhoe transmission to see if a hybrid 72c could be built using the backhoe casing as it has a sump that is bolted on and bigger oil capacity and less likely to froth the oil as a standard Velvet Drive can do. Its my understanding they both share the same size plates and friction plates but the backhoe use steel for strength. In my research on Velvet Drives over the years I had the pleasure to talk to Art about the problems on the drives and hooked up with a old school transmission guy in the USA who has shared his recipe on using off the shelf plates and friction plates, to bring the 72c up to 9 friction and 71c to 7 friction in most cases no machining mods to the overall pack in the drum. Some will know there are larger pack pistons that can be found to add pressure to the pack, its looking like the Velvet Shuttle (backhoe) uses a bigger one too… great if it can be used as well will know more once it’s all apart. I have a JCB 3cx backhoe / telehandler transmission here as I’m in the UK more about, they were used in Case 480c/580c,d, and I think John Deere backhoe in the 80’s Will update as I go … so far all the main bolt hole are the same spacing on the 2 types of drives.  ------------- Lets have a go 56 Starflite 77 SN 78 SN 80 BFN |
Replies:
Posted By: 8122pbrainard
Date Posted: April-23-2019 at 5:28pm
Roger, Your mind seems to come up with the projects!!  What are your plans to do with that "beefed up" trans?  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
uk1979 wrote:Posted By: Gary S
Date Posted: April-23-2019 at 5:51pm
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He's going to build a boat/backhoe combination called the Hoe Nautique. Quinner is going to be the factory rep for the Midwest area. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: 8122pbrainard
Date Posted: April-23-2019 at 5:57pm
  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: uk1979
Date Posted: April-23-2019 at 6:52pm
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I found the boat backhoe only works at Pete' s 4 or 5 month a year rubbish in Florida can never get a hole in the water Pete...Looking to fit it in my BFN if it works out. ------------- Lets have a go 56 Starflite 77 SN 78 SN 80 BFN |
Posted By: uk1979
Date Posted: May-13-2019 at 4:17pm
Took the backhoe shuttle into its 3 main parts, the velvet shuttle has a plunger on the forward /reverse selector that used to inch forward each time its pressed…tried the 72C I have in the backhoe bellhousing, and all bolt holes line up… rear housing bolt spacing match each type of drive.    ------------- Lets have a go 56 Starflite 77 SN 78 SN 80 BFN |