Drive tube?
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- Posts: 58
- Joined: Sun May 01, 2016 6:55 am
- Location: Beachmere QLD Australia
Drive tube?
Hi just have a question about a drive tube I have. It is 20 inches long and appears to have the clutch thread on the mounting bracket but it only has an inner diameter of 1/2 an inch which is quite small so the driveshaft must be really small, what motor would that have come off? Drive shaft must have been a needle.
Cheers Bob
Cheers Bob
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Re: Drive tube?
Hi bob only ever seen one like that before it had a brass bush inserted into the top of it could this be the same as yours if so just remove the bush. ... (just thinking out loud) i would of thought all drive shafts where the same dimensions
I,LL NEVER SMOKE WEED WITH WILLIE AGAIN. ......the party's all over before it begun. ...
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- Posts: 58
- Joined: Sun May 01, 2016 6:55 am
- Location: Beachmere QLD Australia
Re: Drive tube?
Hi the previous images didn't work (hate technology) anyway I had a look and yeah it has a brass bush but it's on the bottom of the tube. it's all weird to me as I'm just learning about seagulls. Would this bush some how support a pinion or something like that?
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- Posts: 58
- Joined: Sun May 01, 2016 6:55 am
- Location: Beachmere QLD Australia
Re: Drive tube?
Would the shaft have anything to do with this tapered shaft and the other thing?
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- Posts: 58
- Joined: Sun May 01, 2016 6:55 am
- Location: Beachmere QLD Australia
Re: Drive tube?
I meant would the tube have anything in common with the tapered shaft and the other bit?
Cheers Bob
Cheers Bob
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- Posts: 306
- Joined: Sun Oct 04, 2015 3:26 pm
- Location: wherever I park my truck
Re: Drive tube?
It might be that the bush should be on the gearbox and not in the drive tube as i said i only ever seen one like it before but I'm sure you will get all your answers here. ...
I,LL NEVER SMOKE WEED WITH WILLIE AGAIN. ......the party's all over before it begun. ...
Re: Drive tube?
The brass/bronze bush at the bottom of the drive tube is correct for a SD engine. The water pump housing also has a oil/grease nipple to allow the bush to be lubricated, hence the hole in the bush. It's there to support the top of the pinion shaft, but was deleted early post war onwards.
Not sure if that bush is also present in pre war engines such as the Marston ON/OP series. I'm sure Charles will be able to confirm.
Anyway definitely a SD feature, I'm not sure when exactly it was deleted, sometime before 1950 I suspect.
Not sure if that bush is also present in pre war engines such as the Marston ON/OP series. I'm sure Charles will be able to confirm.
Anyway definitely a SD feature, I'm not sure when exactly it was deleted, sometime before 1950 I suspect.
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Re: Drive tube?
Same in the very early post war 102's up to around 1949 with a "straight out the back" exhaust outlet.
It's a support bearing for the pinion as Oyster has mentioned.
Drive shafts (the square tube) can vary a little bit in dimensions (wall thickness) as do the lengths (standard or long shaft)
Torque tubes (often plated or chromed) can vary as well. Earlier ones not so much, but later type tubes are sometimes quite specific in what they fit.
Clutch pivot pins (i think) are all the same for post war motors until the first of the modern FNR type motors appear in the late 1970's.
Jon
It's a support bearing for the pinion as Oyster has mentioned.
Drive shafts (the square tube) can vary a little bit in dimensions (wall thickness) as do the lengths (standard or long shaft)
Torque tubes (often plated or chromed) can vary as well. Earlier ones not so much, but later type tubes are sometimes quite specific in what they fit.
Clutch pivot pins (i think) are all the same for post war motors until the first of the modern FNR type motors appear in the late 1970's.
Jon
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- Posts: 58
- Joined: Sun May 01, 2016 6:55 am
- Location: Beachmere QLD Australia
Re: Drive tube?
Thanks for the info. Handy to know if I happen to stumble upon an sd sometime and buy it that I have a spare bit for it.
Cheers
Cheers