| Author |
Message |
    
Frank Petran
Advanced Member
Username: frank_petran
Post Number: 38
Registered: 05-2009
| | Posted on Friday, June 26, 2009 - 09:35 pm: | 
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Looking for a forward/reverse transmisson for the launch that I am going to build. Does't have to be a Gray but something that will work. Thanks, Frank |
Paul Huffman
Member
Username: boatpaul
Post Number: 6
Registered: 05-2009
| | Posted on Friday, June 26, 2009 - 11:09 pm: |
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How big a launch and what HP engine,make of engine? boatpaul |
Frank Petran
Advanced Member
Username: frank_petran
Post Number: 39
Registered: 05-2009
| | Posted on Saturday, June 27, 2009 - 07:33 am: |
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Paul,
The boat is about 17 1/2 feet long, The engine I have right now is a 4.5 R but I am looking a a 5 hp Acadia also. Even a reversing prop might work.
Frank |
Paul Huffman
Member
Username: boatpaul
Post Number: 8
Registered: 05-2009
| | Posted on Saturday, June 27, 2009 - 10:09 pm: |
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Hi Frank,the transmission I was thinking of would be to modern for that application.Correct me if I'm wrong but,isnt the Acadia a 2-stroke and therefore reversable with spark control?Paul |
Frank Petran
Advanced Member
Username: frank_petran
Post Number: 41
Registered: 05-2009
| | Posted on Monday, June 29, 2009 - 10:50 pm: |
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Paul,
Yes it is. I could use a newer style as I don't like the idea of the old Mercury style Dock Buster (Crasher). Been there, done that and don't want to do it again. Thus the transmission. What kind of transmission do you have? I'm open to all suggestions. |
Paul Huffman
Member
Username: boatpaul
Post Number: 9
Registered: 05-2009
| | Posted on Tuesday, June 30, 2009 - 07:53 pm: |
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Frank,
are you familiar with the Hurth HBW gearbox's?They are a mechanical gear requiring no oil cooler and virtually effortless shifting.the one I have that I'm not using is a HBW250,it came off a westerbeke60hp diesel that injested a little saltwater.Physically small in size(12Hx9Wx10L)but of more capacity than you really need.I'll have to go look,but I think the ratio is either 2.5 or 3.0,with the torque of your Acadia it might make a good combo.Hurth gears,as in the hbw series,50,100,150&250,the 50 being for the small 1lunger sailboat aux.,9 HP or so.
Paul |
Frank Petran
Advanced Member
Username: frank_petran
Post Number: 42
Registered: 05-2009
| | Posted on Wednesday, July 01, 2009 - 08:39 pm: |
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PAUL,
As I am not familiar with the Hurth HBW transmissions would it be possible to send me a few pictures of the transmission? If you could also include your phone number in the response?
Thanks, Frank |
Paul Huffman
Member
Username: boatpaul
Post Number: 10
Registered: 05-2009
| | Posted on Wednesday, July 01, 2009 - 10:55 pm: |
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Hi Frank,I'm still learning to use this thing,downloading pictures is beyond my ability at this time,but to see what they look like try this web site; [email protected] I just find it difficult to sit in front of this when I can be out puttering.My ph#360-301-2084 Paul |
Frank Petran
Advanced Member
Username: frank_petran
Post Number: 43
Registered: 05-2009
| | Posted on Thursday, July 02, 2009 - 07:39 am: |
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Paul,
I found a better site, Googling Hurth Transmission, with pictures of all the transmissions and none of them will work. Most of those are for bolt on to the engine. Much to new and not the right configeration.
Thanks for your interest but there is almost no way I can make those work. Frank |
Ernie
Senior Member
Username: ernie
Post Number: 984
Registered: 01-2002
| | Posted on Thursday, July 02, 2009 - 07:16 pm: |
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Also you don't need any reduction on these old engines. So any reverse gear you find needs to be 1 to 1 in forward. However most of these old reverse gears have a small reduction in reverse due to the planetary gears. |
