Velvet drive (C-72) Transmission conversion
 

I'm contemplating removing my extension box's, on my 38 Cigarette, ( using #5 SSM drives), and moving my gimbles back to the transom. At present, I'm using Huber driveline transmissions and a short drive shaft, to connect the motors to the drives. If I go w/o the box's, I will have to switch back to "plug-in" transmissions.
Does anyone know if it is as simple as removing the rear coupling from the drive line transmission and bolting on the #3-5 SSM plug-in tail stock, or are there internal modifications that must be done to the transmissions to make them plug-in's?
Anyone have a pair of tailstocks for #3-5 SSM transmissions?

Re: Velvet drive (C-72) Transmission conversion
 

You need to get 10-18-014 which is the tail stock tranny(TRS style).The housings are different from the coupler style to the plug in style. Pinion carrier assm. is different too,but w/ the 10-18-014 you'll get an added plate in REV.

Re: Velvet drive (C-72) Transmission conversion
 

This is great information. I've got plug-in Huber 1330's in my boat. I recall talking to Tom Huber once and I'd swear there's a tag riveted to my trannys that has 10-18-004 on it in addition to Tom's decal. This is the beauty of the OSO site, good honest information. Lou

Re: Velvet drive (C-72) Transmission conversion
 

RMPRam,please contact me re: your project E [email protected]

Re: Velvet drive (C-72) Transmission conversion
 

Marinetrans,
Isnt the TRS plugin tailstock different from a SSM plugin tailstock?
Gary

Re: Velvet drive (C-72) Transmission conversion
 

As marinetrans says, the 2 trasmisisons are different, not possible to convert. Gary, as you pointed out the tailstocks are different TRS to 3-5, but the trans is the same.

However, there is a more significant issue. Unless your drives are exceptionally low on the transom most likely the boat will not like the 5's without the boxes.

Re: Velvet drive (C-72) Transmission conversion
 

Quiet Marc!
I was hoping to pick up a couple used SSM boxes cheap! :D

Re: Velvet drive (C-72) Transmission conversion
 

oops

Re: Velvet drive (C-72) Transmission conversion
 

I have a related question, but from a different angle.... I'm running BW 10-17-016's, and I'll be moving up to a 72 series this winter. I'm using TRS inner transom assy's, with a plug-in tailstock on my BW's.

Is the 10-18-014 what I'm looking for? I was assuming that I would use the tailstocks from my old trannies, as they are in good shape.


Thanks in advance,
Brian

Re: Velvet drive (C-72) Transmission conversion
 

P4-33, Yep thats the one. The 72c one is 1 inch longer than the 71c.So the fwd. engine mounts will have to moved 1 inch towards the bow.Souldn't mess w/ the tail pipes too bad.

Re: Velvet drive (C-72) Transmission conversion
 

Moving forward shouldn't be a problem, I've got rubber couplers between my tailpipes and my exhaust tips. Thanks!

Re: Velvet drive (C-72) Transmission conversion
 

Bear with me guys. I might be looking for a spare to my Huber 1330's. I've got plug-ins to my SSMV's that have tags riveted to the transmission that say 10-18-014. Will all plug-in trannys with a 10-18-014 tag have the correct tailstock for Speedmasters? I appreciate the help. Lou

Re: Velvet drive (C-72) Transmission conversion
 

10-18-014 is just the trans. portion. Merc bolted there own tail stock to it wether it was a TRS or speedmaster series. Marine Drive Systems also had a funky tail stock for them too. You guys also should be changing your u-joint bellows often.Saltwater will ruin your trans. and tail stock shaft coupler(expensive shaft).Just a quick maintanence tip.

Re: Velvet drive (C-72) Transmission conversion
 

Marinetrans- Many thanks for information and maintenance tip! Lou

Re: Velvet drive (C-72) Transmission conversion
 

Marine trans:

does the water leak past the ID of the rear seal or past the o-ring on the input shaft?

if past the ID of the rear seal, is the seal a double lip or are there two seals or just a standard single lip oil seal. are they different between TRS and III/IV?

if past the o-ring is there a seal or frost plug in the forward end of the splined bore of the coupling shaft? How does the shaft get ruined, corrosion??

In either case have you seen the trans. oil contaminated??

thanks for you input.

Re: Velvet drive (C-72) Transmission conversion
 

Believe it or not it, the water passes thru the sealed bearings and ruins the seal surface on output coupling/shaft assm(TRS) .Then after it passes the seal, its free game to corrode internal trans. components.Yes you will see a "strawberry frappe" in the trans.Sometimes, in an unrelated water issue, see expansion plugs pop out of output/coupler shafts.Result is a bellows full of nice red ATF fluid.