Swap b-110 BGB into early b-10

[wisac]

I have an early b-10 with a sloppy BGB.  Is a b-110 a good parts candidate?

 

TIA

[SmilinSam]

Both are straight 3 speed tractors so I'm pretty sure theres no problem. Should be the same basic gearbox.

[wisac]

That was my thought as well.  Thanks for the confirmation!  From what I have gathered I should be able to use any early 3/4 inch shaft straight 3 speed box?  That would certainly give me more options!

[PhanDad]

In a pinch, you can use the newer "big" BGB, but since the input shaft and the entire cross shaft is 7/8" diameter, you would need the 7/8" input yoke and a 7/8" dia tranny drive pulley. 

I don't know if the "special" tranny drive pulley that was used on the B-110 BGB was used on the early B-10 (3/4" dia), but you couldn't use it.  It does look like there's enough meat to enlarge the diameter to 7/8":

 

The PTO end of the "small" BGB is 7/8" so there shouldn't be an  issue with the hanging PTO:

I've always wondered why, in the "small" BGB, Simplicity went with a 3 diameter cross shaft and 2 diameter input shaft.  They must have gotten a "deal" on the 20mm dia bevel gears.  

 

[wisac]

Thank you all!   I have several potential paths forward now!

[AC710]

On 4/22/2024 at 2:26 PM, PhanDad said:

I don't know if the "special" tranny drive pulley that was used on the B-110 BGB was used on the early B-10 (3/4" dia), but you couldn't use it.  It does look like there's enough meat to enlarge the diameter to 7/8":

Do you know the purpose of this "special" drive pulley? Why would they put a slipping disc pulley there? Would it be okay to replace it with a solid pulley?

[PhanDad]

11 minutes ago, AC710 said:

Do you know the purpose of this "special" drive pulley? Why would they put a slipping disc pulley there?

I think to make the clutch belt less "grabby".  

12 minutes ago, AC710 said:

Would it be okay to replace it with a solid pulley?

I have minimal knowledge of non-hydro trannys.  I think newer gear tractors had a regular pulley - others should confirm.  

 

[AC710]

9 hours ago, PhanDad said:

  I think newer gear tractors had a regular pulley

My 7016 and 710 both have simple, solid pulleys on the BGB. The 710 has a soft-ish clutch. The 7016 will snap your neck if you forget and pop the clutch. A "less grabby" clutch was my guess as to the special pulley.

[acken]

Iv'e changed out a couple of my 2 piece pulleys , and put single piece instead.  I have very little flat ground on my property.  When going downhill the original pulley makes a lot of noise, and it feels like I'm approaching warp speed.