robertely

Yes, the bushing has snapped off at that point. I was thinking of getting the grooves lined up and brazed? I know a very good welder, but if not I guess I'll need to get someone to machine a new bushing made up. I'll check that it's all one piece all the way through as well. The lower gear may be more problematic. What initially looked like a beautifully machined finish to the back of the gear for some reasons of clearance became suspicious when I realised that there was nothing to clear. There surely can't be a reason for this gear to be narrowed so I'm guessing it has been beautifully turned down by the reverse pinion. There is no excess wear or damage on the other gears or the arm though. So I'm looking at getting a new gear made up, new bushing for that gear, new bushings x 2 for shafts on the case, 8 x pins and then reassembly.

Thanks for that. Wasn't too bad in the end. Bit of a mind challenge to get the gears out though! Think it was the camera as the top gear looks pretty good....

Perfect! Thanks Ken

Gearbox is stripped and things are a little clearer now..... I assume I just need to make up 8 new pins and clamp the parts together again with the bronze sleeve reattached to the hub. Looks like the other 7 pins must have snapped off at various times. I only found the remains of the one final pin in the housing and don't recall any bits falling out in previous oil changes so must have been like that for many years.

Thank you Ken. Might someone have a parts diagram or a link to one? I'm just about to start stripping it down so may be back with more photos or questions. Regards Robert

Greetings again. Having double checked my propshaft and found nothing wrong, I've opened up my gearbox and found the cause of my jamming up problem. On the lower gear (arrowed) there is a pin that appears to be damaged (arrowed in second photo). When the pin slides in the gearbox is free to move, but when it slides out the gearbox jams up. Can anyone advise what this pin does and how it should look? I've had a good look on the search function here but couldn't find anything specific. Does anyone have any diagrams or info? Thanks again

Thanks Guys. I've checked the pinion, and the gear seems to have lined up nicely with it. However, I shall give it a good check again, plus check for excess slop in the ring gear. Fingers crossed something obvious will pop up.

Hello I have a De Dion Bouton video that some of you may find interesting on my new YouTube channel: I also hope to have a few more pre1916 vehicles in the near future Many thanks Robert

Thanks trimacar The photo was a little poor but the gear is certainly brand new - this was built from a single piece by a very experienced gear cutter - Brentwin Gears in the UK. It may have taken him 15 months to manufacture, a little longer than the 1 month he originally suggested, but it looked like a good job and was priced only 20% higher than quoted - a fine deal in this industry! He also broke the original bearing on the shaft which was unobtainable so I had to find and get a different bearing machined, hence the newer bearing sticking out a bit. Unfortunately none of the veteran car or gear specialists I spoke to were willing to take in the axle/propshaft to repair it, so I've had to strip it a piece at a time, try and work out clearances and refit with the various contradicting pieces of advice from each of the aforementioned specialists! I think I might try adjusting the play in the propshaft by adjusting the outer tube and give it a go. Strangely it managed 20 miles or so after the rebuild before binding. Back to the drawing board! Thanks again

Greetings everyone. I have recently replaced the long propshaft with the bevel gear on the end, as well as some work done on the universal joint and removed lots of play. I've managed 20 miles or so and all seemed fine, however the propshaft seems to be jamming up and leaving the car unable to move. The rear axle and differential appear to spin freely, as does the gearbox and propshaft when seperate. Maybe I have tightened the propshaft too much and I need more play - does anyone have a figure for the play or backlash on the propshaft? Maybe I have fitted the radius or suspension arms too tight? Is there a procedure for this? Any other ideas as to what could cause this binding between the rear axle and gearbox? Thanks in advance

Thanks for the hints. I'll give them a try

Hello everyone I have recently had a new propshaft made up and now require a bearing that sits next to the bevel gear. It is a tapered roller bearing, Timken number 321-312 and is unavailable since 1970. Details in link: https://cad.timken.com/item/all-product-types/tapered-roller-bearings-ts-tapered-single-imperi-2/321-312 Would anyone have a spare bearing? Alternatively can anyone recommend a similar size bearing that could be fit with spacers? Kind regards Robert

Hello everyone I require a bearing for my Hupmobile Model 20 It is a tapered roller bearing, Timken number 321-312 and is unavailable since 1970. Details in link: https://cad.timken.com/item/all-product-types/tapered-roller-bearings-ts-tapered-single-imperi-2/321-312 Would anyone have a spare bearing? Alternatively can anyone recommend a similar size bearing that could be fit with spacers? Kind regards Robert

Hello everyone Bit of a long shot this, but would anyone have a spare Model 20 clutch housing that they have sitting around on a shelf somewhere? Perhaps I could cross your palm with silver in order to give purchase to said item? Unfortunately mine has been previously repaired a few times and is now too weak to repair. Thought I'd try my luck before I send it off to get a new one made up. I'm not sure of any variations in the designs but mine is a fairly late 1913 model. Regards Robert

Greetings Below is a photo of two new shafts and hubs as made by a friend and engineer in Holland. The axle is back on and under testing. I thought I'd mention that the new shafts appears to have cleared up my steering problem - I previously had a couple of 'moments' at 'high' speed with the worn axle. I had read on this forum that the earlier straight end axles when worn could affect the steering badly and I would say this is also true of the later model C tapered end axles. Best regards Robert