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David Ingham (Unregistered Guest)
Unregistered guest
Posted From: 208.179.84.200
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 03, 2006 - 12:57 pm: | 
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I’ve got a Terra Tiger which I’m attempting to bring back to life. The original engine is long gone. The drive belt is 1-1/8 inch wide on top. I think it’s original equipment? I have an 18 hp four stroke motor with a Comet torque converter on it. I set the engine in place and noted the belt really drags on the torque converter. I figure that the torque converter is for a 1 inch wide or less belt. Hope this is not a dumb question, but does any one have any ideas on how I can figure out what size belt this old comet torque converter should use. Assuming this torque converter is for a 1-1/8 inch wide belt, how tight should the belt be once installed?
Any advise or thoughts would be appreciated.
Dave |
david berger
Senior Member
Username: Davidrrrd
Post Number: 323
Registered: 01-2005
Posted From: 172.150.107.15
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 04, 2006 - 09:29 am: |
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hi dave, assuming your driven pulley (on trany) holds the belt at the top or 1/8 inch over then this is a good belt for your tiger,
now as to putting another type engine in place you might first decide on some sort of adjustable engine mounting system which would allow you to move your engine towards trany or away for the tuning adjustments you will need to make, possibly side to side as well to be sure it gets adjusted just right.
next remember that at your engines Idell speed the belt shouldn't be grabbed by the engines clutch,
so there should be some slack,
it should grab and turn soon after the gas is given and hopefully the belt at high speed makes it to the top of the clutch, BUT NOT OVER!
these tips should get you into the ball park anyways, |
Terry
New member
Username: Chaparral
Post Number: 8
Registered: 01-2005
Posted From: 64.61.224.233
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 04, 2006 - 01:42 pm: |
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Hi Dave: If you want to put up an e-mail address I have some measurements for you that may help you out. |
David Ingham (Unregistered Guest)
Unregistered guest
Posted From: 208.179.84.200
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 04, 2006 - 12:27 pm: |
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Thanks for the tips David. I was looking at the drive set up and the belt does seem to sit right on top of the driven pulley (is that the right word?) with very little of the belt resting down in the “V”. In your experience do these belt drive systems have the belts jump off the pulleys very often?
I like the idea of an adjustable motor mount. What do you think of bolting two metal rails, maybe 1 inch box or “C” channel, to the floor of the tiger, attach ¼ inch plate to it, then drill/cut slots in the plate for the engine mounts? I’m just wondering if by bolting the metal rails through the fiberglass I might be creating later problems with body cracks at the bolt holes, constant vibration on the bolts causing leaks, flexing of the fiberglass, etc. Any thoughts?
Dave |
david berger
Senior Member
Username: Davidrrrd
Post Number: 325
Registered: 01-2005
Posted From: 172.152.23.171
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 05, 2006 - 10:17 am: |
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the oridganal engine mounts had holes threw the glass right?
you support the fiberglass with large washers on both inside and outside and it shold work fine, your rail idea might prove dificult to get a wrench under for the bolts threw the engine plate, insted maybe use the snowmobile type engine mounting rubber isolaters with long threded studs, place thes threw the body and use washer and nut outside+red locktight, then you mount your sloted engin mounting plate to the 4 threded studs on tops of the rubber isolater, or posably your rails with carege bolts from underside threw a big washer then the hull and your rail -washer and a lock nut,
and then the engine mounting plat or rubber isolater idea. |
Dave Keeso
Intermediate Member
Username: Argomag
Post Number: 70
Registered: 01-2005
Posted From: 142.55.208.195
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 05, 2006 - 10:39 am: |
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I have very limited technical knowledge about stuff like mounting engines but if you were to make up some sort of adjustable mounting bracket for the engine, it would seem to me that you would possibly run into other problems like the mounts vibrating loose or the engine shifting. How would you make sure that this doesn't happen? If the engine sat up a little higher, you might be able to change the oil easier. Again, i have no real technical knowledge so if my thoughts are wrong, please correct me. |
David Ingham
New member
Username: Lingha
Post Number: 1
Registered: 03-2006
Posted From: 208.179.84.200
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 05, 2006 - 04:03 pm: |
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Hi Terry, Email address should be provided. I am registered but evidently didn't log on that way when I posted my question. Discussion boards are new to me. Also I'm barely computer literate and I have new computer/system. Any assistance or measurements on the torque converter would be appreciated.
Dave |
david berger
Senior Member
Username: Davidrrrd
Post Number: 327
Registered: 01-2005
Posted From: 172.151.214.249
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 06, 2006 - 10:18 am: |
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i had ment the belt shouldent ride out of the top of the driven pully very much, maybe 1/8" or so,
almost sounds as yours rides more than 1/2 way out of pully, this would be a bad thing, makes me think just to keep it in you might have to keep the belt tight and thats not good for drive pully on the engine. - anyone?? |
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