Engine ideas

[gravelymay]

Hi js5020
The idea you had with cutting both ends off the gear boring and broching to fit the motor shalf would work. Thats the same method Gravely uses on the late models. The only problem pto speed.
By the way the 18 hp Briggs you have, what size shalf does it have.
Put that baby on. I thank you would like it!!!! Thanks gravelymay

 

[js5020]

Well I kinda gave puttin that engine on some thought but,,,,,, it's an L head twin it looked like it was gonna be real loooong out the back so I kinda started looking for a single cyl. The shaft on the Briggs? It's a 1" which would make it easy to put on a later tractor. The only place I need more power ( notice I said need not want ) would be blowing snow, that darn little dog eater sure seems to need the hp, the 12 Kohler just plays with everything else.

 

[gravelymay]

Hi js5020

We been trying out that 13 Honda Gravely with the 30" deck on big grass
slipped clutch but no choke down.
One thing I did notice how well the front stayed down like the old gravelys did. If that big 12 goes down this is some to thank about? Thanks Bruce

 

[js5020]

The 12 hp machine would be easy to repower, everything to swap in a Briggs with a 1" shaft is available off the shelf, so I could go up to 23hp. Probably handle better with the Briggs, I don't think they weigh as much as the Kohler, but I have a cheap weight set up on the 30" mower to keep the nose down. I know I'm gonna need to do something with the Kohler soon, it's starting to consume a fair bit of oil, not a bug duster yet but gettin close.

 

[gravelymay]

Hi
Thats what got me into repower, My old 19 Series II got to where If I mowed all day, I had better check the oil at lunch time,because It would be down about a pint in half day. Bruce

 

[js5020]

Well I am back on this project, got everything disassembled and have some new color on the housings, changed the color was black it's now red ( sorry correct police ) I started getting info on the L twin and compared it to the v twin,,,, the L twin is only 2 inches longer so it's back on the list of possibilities, I still haven't decided on the gearing I want to use. But were moving forward!

 

[gravelymay]

Hi Js5020
I though I had ran everyone off.How do you plan to connect to the old gear?
Every thing you look at makes a little long? I had though about a cluster gear below the engine gear to reduce the speed? that is a small gear on motor mated to a larger gear on cluster, the small gear on the cluster would mate with the larger gear on the input shaft to the old gravely. O well just
thinking Good to hear some body is alive. thanks Bruce

 

[js5020]

How do I plan to connect the gear? Well I've been giving that some thought and came up with several ideas,,, because just about any engine above 8 hp is going to have a 1" crank I have scrapped the thought of boring and broaching the gear because I'm certain it would not hold up with a 1" hole in it, I figured 3/4" might have a chance, so I'm thinkin I cut off the taper and cut a keyway in it and make a sleeve to join the gear and the crank. Course I need to do some measuring of what the overall length will be .

 

[oldmech]

JS5020 Hi! For Gravely L model . You need two adaptors one for sun gear one for engine to tranny. Mr. Bruce Livingstone make it I add pics. I Fix a Dek-diesel on L model with gear reduction. I am very happy now 78 hrs on it. I have too a L8 model I dont use now. Why My Gravely L8 at full speed on heavy load take 2-3 liter gas hour my Dek -diesel less ONE liter. The economy is fabulous 72 hrs for 45 liters Fuel is more one dollars a liter here. Plenty torque at low and medium speed. Direct injection diesel are VERY NOISY. I plan make a new thread with many pics for show How fix new engine on Gravely L model. Good Luck ! Oldmech

 

[gravelymay]

Hi js5020
I thank that will work ? If you put a woodruff Key on the in put shalf then
put your sleeve over it and the motor shaft. with a bolt down thur the shalf to hold it all together a 3/8 X 24 cap screw is what I used on the Honda.
IT MIGHT JEST WORK!!!!!!!!! Thanks Bruce