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tonyhutchinson
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Durham England
Joined: 08/17/2015
Posts: 98

Im beginning to put my 1958 R50 back together and have started with the steering head bearings (tapered). The inner race on the top of the steering head sits slightly higher than the steering head itself and not flush as I would have imagined- is this normal?

thanks and sorry if this has been asked before
Tony

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Tony

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6652
From what I can remember,

From what I can remember, they're pretty special bearings...difficult to find at a local bearing house. I bought my set at Vech's in Mississippi...doesn't do you much good in Europe. I don't have any pictures or info on the bearings that Vech offers. Mark Huggett is a good supplier in Switzerland although I see nothing about bearings on his website.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

The Plunger
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VBMWMO #8356
Joined: 09/03/2012
Posts: 226
S. Meyer has

S. Meyer has them,
http://www.meyer-bikes.de/index.php?page=gruppe&path=/00000080/00000093&...

Before seating the race be sure to remove any trace of paint, dirt etc. from the tube. Get an awl and get everything out of the 90 corner or you'll have a poor fit.

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Brian
'52 R67/2
'63 R69 S
In what space, sir. In what space!?

tonyhutchinson
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Durham England
Joined: 08/17/2015
Posts: 98
Ok thank you, I have the

Ok thank you, I have the bearings already I just need some fitment details.

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Tony

The Plunger
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VBMWMO #8356
Joined: 09/03/2012
Posts: 226
Oh, Umm, you've removed the

Oh,
Umm, you've removed the old races, right? Simple. start the race with a rubber or plastic mallet. Once started switch to a ball peen hammer and a soft copper or brass punch and tap in working around until the ping sound becomes a thonk, then it is seated and should be flush with the stem tube. DON'T HIT THE RACE WITH YOUR BALL PEEN HAMMER!!

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Brian
'52 R67/2
'63 R69 S
In what space, sir. In what space!?

tonyhutchinson
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Durham England
Joined: 08/17/2015
Posts: 98
Has anyone fitted this type

Has anyone fitted this type of bearing recently? Im sure Ive got it right but just need to check.

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Tony

Daves79x
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VBMWMO #9030
Joined: 08/09/2015
Posts: 325
I Did Mine

I did mine a year ago and don't remember exactly how the top race sits, but it won't matter. The stem nut and top bridge bear down on the inner race of the rollers anyway. A trick to fully seating and adjusting the new roller bearings is to torque the stem nut down to 70-80 ft/lbs, (don't worry, it won't hurt the bearings) then rotate the stem lock-to-lock 10 or 15 times. Loosen the nut, then do the same thing again. This seats all the races and squares them to the frame and stem. Loosen the nut again and torque the nut to about 12 ft/lbs. Just so the forks fall softly side-to-side with a little drag. You'll be good to go for a long time.

Dave

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Dave

grahamjb
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Joined: 07/24/2017
Posts: 1
Mate I don't know if this has

Mate
I don't know if this has been answered for you but I had the same issue when fitting tapered steering head bearings to my R26.

I milled the underneath of the top triple tree to negate the extra height of the taper bearings which gave a nice flush fitting to the top of the forks. I also fitted a grease seal on the lower bearings but found that the extra 0.5mm thickness of the seal stuffed things around so I modified the seal to clear the inner bearing race.
Cheers
GB in Australia

  • seal_modification1.jpg
  • underside_of_triple_tree_milled_flat.jpg
  • seal_and_lower_bearing_in_position.jpg
  • no_gap_between_fork_and_triple_tree.jpg

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